PowerShell/Data/Abbr/general.csv

1	ABBR,TERM
2	0D,obvious deed
3	1AM,Air Mechanic 1st Class
4	1D,One-Dimensional
5	2AM,Air Mechanic 2nd Class
6	2D,Two-dimensional
7	2G,Second-generation mobile (cellular,wireless) telephone system
8	2LA,Two Letter Acronym
9	2Lt,2nd Lieutenant
10	3AM,Air Mechanic 3rd Class
11	3D,Three-Dimensional
12	3G,Third-generation mobile telephone system
13	3i,Investors In Industry (venture capitalists)
14	3M,Minnesota Mining and Manufacturing Company
15	4D,Four-Dimensional (usually three spatial plus one temporal dimension,sometimes four spatial ones)
16	4G,Fourth-generation mobile telephone system
17	4WD,Four-wheel drive
18	5D,Five-Dimensional
19	6D,Six-Dimensional
20	7D,Seven-Dimensional
21	8D,Eight-Dimensional
22	9D,Nine-Dimensional
23	A,Ampere
24	A10,Atlantic 10 Conference
25	A1C,Airman First Class
26	A4,European standard office paper size
27	AA,achieved availability,Alcoholics Anonymous,Armed Forces Americas (postal symbol),Aruba (FIPS 10-4 territory code),assembly area,Automobile Association,avenue of approach
28	aA,Attoampere
29	AAAI,Association for the Advancement of Artificial Intelligence,formerly American Association for Artificial Intelligence
30	AAAS,American Association for the Advancement of Science
31	AAAV,Advanced Amphibious Assault Vehicle
32	AAC,American Athletic Conference,Army Air Corps (British Army)
33	AAD,analogue-analogue-digital (CD quality),Australian Antarctic Division
34	AADAC,Alberta Alcohol and Drug Abuse Commission
35	AADC,area air defense commander,amino acid decarboxylase,aromatic L-amino acid decarboxylase,Australian Antarctic Data Centre
36	AADD,Adult attention deficit disorder
37	AADT,annual average daily traffic
38	AAFC,U.S. Army Air Corps Ferrying Command (1941-1942),All-America Football Conference (1946-1949)
39	AAFES,Army and Air Force Exchange Service
40	AAIS,advanced airborne interceptor simulator
41	AAM,air-to-air missile
42	AAMOF,as a matter of fact
43	AAN,American Academy of Nursing
44	AANEAS,Anglo-Australian Near-Earth Asteroid Survey
45	AAODL,Atmospheric Aerosols and Optics Data Library
46	AAP,advanced acquisition plan,Allied administrative publication,American Academy of Pediatrics
47	AAPC,Accounting and Auditing Policy Committee
48	AAR,after-action review,Association of American Railroads
49	AARP,(i/s) American Association of Retired Persons (now officially known only by the initials)
50	AASPEM,advanced air-to-air system performance evaluation model
51	AAT,Australian Antarctic Territory
52	AAV,Amphibious Assault Vehicle
53	AAWC,anti-air warfare commander
54	ABA,Adriatic Basketball Association,American Bar Association,American Basketball Association,American Beverage Association,American Bicycle Association,American Birding Association,Australian Broadcasting Authority
55	ABB,ASEA Brown Boveri (Swiss-Swedish multinational company)
56	ABC,the first three letters of the Latin script known as the alphabet
57	ABC,Active Body Control
58	ABC,alien big cat
59	ABC,always be careful
60	ABC,American-born Chinese
61	ABC,anti-lock brake controller
62	ABCA,American,British and Canadian Armies (originally),Army Bureau of Current Affairs
63	ABCS,(U.S.) Army Battle Command System
64	ABET,Accreditation Board for Engineering and Technology
65	ABFIST,Advanced Bradley Full Crew Interactive Skills Trainer
66	ABGI,Addington-Barker Group International
67	ABIN,Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
68	ABL,American Basketball League
69	ABLE,AirBorne Law Enforcement (police air support unit)
70	ABM,anti-ballistic missile,Asynchronous Balanced Mode,automated banking machine
71	ABMC,American Battle Monuments Commission
72	ABN,Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
73	ABPI,Association of the British Pharmaceutical Industry
74	ABRSM,Associated Board of the Royal Schools of Music
75	ABSTRIPS,abstraction-based STRIPS
76	ABV,Alcohol by volume
77	ABW,Aruba (ISO 3166 trigram)
78	Ac,Actinium
79	aC,Attocoulomb
80	AC1,Aircraftman 1st Class
81	AC2,Aircraftman 2nd Class
82	ACARS,Aircraft Communications Addressing and Reporting System
83	ACAS,Aboriginal Children's Advancement Society,Advisory,Conciliation and Arbitration Service
84	ACCA,The Association of Chartered Certified Accountants,Automatic Cloud Cover Assessment
85	ACCD,American Coalition of Citizens with Disabilities
86	ACCS,Air Communications and Control Squadron
87	ACDA,Arms Control & Disarmament Agency
88	ACHT,Average Call Hold Time
89	ACINT,Acoustic Intelligence
90	ACK,Acknowledge (telecommunications; cf. NAK)
91	ACLJ,American Center for Law and Justice
92	ACLOS,Automatic CLOS (missile control system)
93	ACLS,American Council of Learned Societies
94	ACMC,(U.S.) Assistant Commandant of the Marine Corps
95	ACNA,Anglican Church in North America
96	ACO,Airspace Control Order
97	ACOBA,Advisory Committee on Business Appointments
98	ACOG,American College of Obstetricians and Gynecologists
99	ACOM,(U.S.) Atlantic Command
100	ACORN,Association of Community Organizations for Reform Now
101	ACR,Advanced Concepts and Requirements
102	ACRI,African Crisis Initiative
103	ACRT,Advanced Concepts Research Tool simulator
104	ACSC,Army Command and Staff College (various nations)
105	ACST,American Cooperative School of Tunis
106	ACST,Australian Central Standard Time
107	ACTD,Advanced Concept Technology Demonstration
108	ACTU,Australian Council of Trade Unions
109	ACU,American Conservative Union
110	ADAGE,Air Defense Air to Ground Engagement (simulation)
111	ADAP,AIDS Drug Assistance Program
112	ADAS,Asiago-DLR Asteroid Survey
113	ADAT,Alesis Digital Audio Tape (recording format)
114	ADB,Asian Development Bank
115	ADDIE,Analyze Design Develop Implement and Evaluate
116	ADDNS,Advanced Deployable Day/Night Simulation
117	ADF,Australian Defence Force,African Development Foundation
118	ADGB,Air Defence of Great Britain
119	ADHD,Attention-Deficit Hyperactivity Disorder
120	ADHS,Attention-Deficit Hyperactivity Syndrome
121	ADI,Acceptable/Allowable Daily Intake
122	ADIZ,Air Defence Identification Zone
123	ADL,Anti-Defamation League
124	ADOA,Air Defence Operations Area
125	ADRG,Arc-second Raster Chart (ARC) Digitized Raster Graphics
126	ADT,Atlantic Daylight Time (UTC−3 hours)
127	ADTB,Army Doctrine and Training Bulletin
128	ADW,Air Defence Warning
129	AEDT,Australian Eastern Daylight Time
130	AEF,American Expeditionary Force
131	AEGIS,Airborne Early warning Ground environment Interface Segment (fake etymology)
132	AESR,Aeronautical Equipment Service Record
133	AEST,Australian Eastern Standard Time
134	aet,After extra time (Football)
135	aF,Attofarad
136	AFAIC,As Far As I'm Concerned
137	AFAICT,As Far As I Can Tell
138	AFAIK,As Far As I Know
139	AFAIR,As Far As I Remember/Recall
140	AFATDS,Advanced Field Artillery Tactical Data System
141	AFC,American Football Conference,Asian Football Confederation
142	AFCEA,Armed Forces Communications and Electronics Association
143	AFDB,African Development Bank
144	AFES,Automatic Fire Extinguishing System
145	AFG,Afghanistan (ISO 3166 trigram)
146	AFIS,Automated Fingerprint Identification System,American Forces Information Service
147	AFIST,Abrams Full Crew Interactive Skills Trainer
148	AFJ,April Fool's Joke
149	AFK,Away From Keyboard (Internet chat abbreviation)
150	AFL,American Federation of Labor,American Football League — either the 1960s league that merged into the National Football League,or one of several other leagues of American football,Arena Football League,Australian Football League,AFL-CIO,American Federation of Labor,Congress of Industrial Organizations
151	AFLAC,American Family Life Assurance Company of Columbus
152	AFM,Army Field Manual (UK; the U.S. more frequently uses just FM),Atomic Force Microscope,Aviation Fleet Maintenance
153	AFO,Association of Field Ornithologists
154	AFOSR,U.S. Air Force Office of Scientific Research
155	AFQT,Armed Forces Qualification Test
156	AFRC,Air Force Reserve Command
157	AFRL,Air Force Research Laboratory
158	AFROTC,Air Force Reserve Officer Training Corps
159	AFRRI,(i,U.S.) Armed Forces Radiobiology Research Institute
160	AFRTS,Armed Forces Radio and Television Service
161	AFS,Active Front Steering,Air Facility Sub-System,Amniotic Fluid-derived Stem cell,AFS&A or AFSA,U.S. Air Force Studies and Analysis
162	AFSC,U.S. Air Force Staff College (obsolete; replaced with JFSC),U.S. Air Force Systems Command
163	AFSCN,U.S. Air Force Satellite Control Network
164	AFSPC,Air Force Space Command
165	AFT,American Farmland Trust
166	AFV,armoured fighting vehicle
167	AFWA,Air Force Weather Agency,Association of Fish and Wildlife Agencies,AG[edit]
168	ag,Attogram
169	Ag,Silver (Latin argentum)
170	AGARD,Advisory Group for Aerospace Research and Development
171	AGARDograph,Advanced Guidance for Alliance Research and Development publication
172	AGASA,Akeno Giant Air Shower Array (cosmic ray detector)
173	AGB,Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
174	AGC,Adjutant General's Corps (British Army)
175	AGC,Apollo Guidance Computer,Automatic Gain Control
176	AGDC,Australian Game Developers' Conference
177	AGI,Auxiliary Group Intelligence
178	AGL,Above Ground Level
179	AGM,Annual General Meeting
180	AGN,Active Galactic Nucleus
181	AGO,Angola (ISO 3166 trigram)
182	AGP,Accelerated Graphics Port
183	AGRICOLA,Agriculture Online Access
184	AGS,Alaska Ground Station (LandSat)
185	AGTS,Advanced Gunnery Training System
186	AGU,American Geophysical Union
187	AGW,Autonomous Guided Weapon
188	Ah,Ampere-hour
189	AH,Attack Helicopter
190	aH,Attohenry
191	AHA,American Heart Association
192	AHCPR,Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
193	AHEC,Australian Health Ethics Committee
194	AHPCRC,Army High Performance Computing Research Center
195	AHQ,Air Headquarters
196	AHRQ,Agency for Healthcare Research and Quality
197	AHS,American Housing Survey
198	AI,Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
199	AIA,Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
200	AIAA,American Institute of Aeronautics and Astronautics
201	AIC,African Independent Church,Animal Identification Coordinator
202	AICD,Australian Institute of Company Directors
203	AICMFP,And I Claim My Five Pounds
204	AID,U.S. Agency for International Development
205	AIDS,Acquired Immune Deficiency Syndrome
206	AIM,Australian Institute of Management
207	AIMP,Aurora Incremental Modernization Project
208	AIPAC,American Israel Public Affairs Committee
209	AIR,Aircraft Inventory Record
210	AIRFA,American Indian Religious Freedom Act
211	AIRS, Aerometric Information Retrieval System (obsolete; replaced with AFS)
212	AIS,Australian Institute of Sport,Automatic Identification System
213	AISB,(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
214	aJ,Attojoule
215	AJ,Azerbaijan (FIPS 10-4 country code)
216	Ajax,Asynchronous JavaScript And XML
217	AJD,Astronomical Julian day
218	AJP,Allied Joint Publication
219	AJPW,All Japan Pro Wrestling
220	AK,Alaska (postal symbol)
221	aK,Attokelvin
222	AKA,Above knee amputation (orthopaedic usage)
223	AKDT,Alaska Standard Daylight Saving Time (UTC−8 hours)
224	AKST,Alaska Standard Time (UTC−9 hours)
225	Al,Aluminium
226	aL,Attolitre
227	ALA,Åland Islands (ISO 3166 trigram)
228	ALAP,As Long/Late As Possible
229	ALARM,Air-Launched Anti-Radar Missile
230	ALB,Albania (ISO 3166 trigram)
231	ALD,Accounting Line Designator (nuclear weapon targeting)
232	ALERT,Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
233	ALF,Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
234	ALG,Algeria (IOC and FIFA trigram,but not ISO 3166)
235	ALGOL,ALGOrithmic Language
236	ALOA,Associated Locksmiths of America,Inc.
237	ALOC,Air Lines Of Communication,Average Length of Calls
238	ALPA,Air Line Pilots Association
239	ALS,Amyotrophic Lateral Sclerosis,Automatic Landing System
240	ALSHS,Abraham Low Self-Help Systems
241	ALSP,Aggregate Level Simulation Protocol
242	ALTE,Association of Language Testers in Europe
243	Am,Americium
244	AM-many,including Amplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
245	AM1,Airman 1st class
246	AMA,American Medical Association,Australian Medical Association
247	AMAPS,Aircraft,Missile,Avionics Performance Simulation
248	AMC,Adaptive modulation and coding (digital communications),U.S. Air Mobility Command,American Motors Corporation,American Movie Classics (TV network; now known simply by the initials),U.S. Army Materiel Command
249	AMCB,U.S. Army/Marine Corps Board
250	AMFR,Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
251	AMFRS,Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
252	AML,Acute Myeloid Leukaemia
253	AMLCD,Active Matrix Liquid Crystal Display
254	AMLO,Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
255	AMO,Atlantic Multidecadal Oscillation
256	AMOLED,Active-matrix organic light-emitting diode
257	AMOS,Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
258	AMP,Adenosine MonoPhosphate,Automated Mission Planner
259	AMRAAM,Advanced Medium-Range Air-to-Air Missile
260	AMRDEC,U.S. Aviation & Missile Research,Development,& Engineering Center
261	AMS,Agriculture Marketing Service,American Mathematical Society
262	AMSAA,U.S. Army Materiel Systems Analysis Activity
263	AMSO,U.S. Army Model and Simulation Office
264	AMSU,Advanced Microwave Sounding Unit
265	AMTE,UK Admiralty Marine Technology Establishment (1977-1984)
266	AN,Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
267	aN,Attonewton
268	ANA,Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
269	ANC,African National Congress
270	AND,Andorra (ISO 3166 trigram)
271	ANFO,Ammonium nitrate/fuel oil (explosive)
272	ANGLiCo,Air/Naval Gunfire Liaison Company
273	ANL,Argonne National Laboratory
274	ANM,Acoustic Noise Monitor
275	ANOVA,ANalysis Of VAriance
276	ANS,Applied and Natural Sciences
277	ANSI,American National Standards Institute
278	ANT,Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
279	ANTM,America's Next Top Model
280	ANTY,Acronyms,No Thank You
281	ANWR,Arctic National Wildlife Refuge /ˈænwɑr/
282	ANZ,Australia and New Zealand Banking Group
283	ANZAC,Australian and New Zealand Army Corps
284	AO,Angola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
285	AOC,Air Operations Centre,Air Officer Commanding
286	AOD,Adrenalin O.D. (punk rock band)
287	AOI,Angle Of Incidence Arab Organization for Industrialization
288	AOL,America OnLine
289	AOR,Area of Responsibility
290	AOSTH,Adventures of Sonic the Hedgehog
291	AOTS,Attack of the Show!
292	AOU,American Ornithologists' Union
293	APB,All Points Bulletin (police jargon)
294	APC,Armoured Personnel Carrier,Armour Piercing Capped (ammunition)
295	APCNR,Armour-Piercing,Composite Non-Rigid (ammunition)
296	APCR,Armour-Piercing,Composite Rigid (ammunition)
297	APDS,Armour-Piercing,Discarding-Sabot (ammunition)
298	APEC,Asia Pacific Economic Cooperation
299	APEDS,AMSAA Performance Estimates Data System
300	APEX,Applied Physics Express
301	APFSDS,Armour-Piercing,Fin-Stabilised,Discarding Sabot (ammunition)
302	APHA,American Public Health Association
303	APHE,Armour-Piercing,High Explosive (ammunition)
304	APHIS,Animal and Plant Health Inspection Service
305	APOD,Aerial Port (Airport) Of Debarkation
306	APOE,Aerial Port (Airport) Of Embarkation
307	APOLLO,Apache Point Observatory Lunar Laser-ranging Operation
308	APP,Allied Procedural Publication
309	APR,Annual Percentage Rate
310	APS,Advanced Photo System (cf. APS-C,an image sensor format based on the size of the original APS film frame),American Physical Society,Antiphospholipid Antibody Syndrome,AQ[edit]
311	AQ,AdventureQuest,American Samoa (FIPS 10-4 territory code),Antarctica (ISO 3166 digram),Automatic qualifier,a term used by U.S. sports media from 1998 to 2013 to refer to the six conferences whose champions automatically entered the now-defunct Bowl Championship Series of college football
312	AQIM,Al-Qaeda in the Islamic Maghreb
313	AR,Argentina (FIPS 10-4 country code; ISO 3166 digram),Arkansas (postal symbol),Armour,Arunachal Pradesh (Indian state code)
314	Ar,Argon
315	ARAG,Advanced Research and Assessment Group
316	ARB,Administrative Review Board
317	ARBA, Army Review Boards Agency
318	ARC,Arc-second Raster Chart,Appalachian Regional Commission
319	ARCA,Automobile Racing Club of America
320	ARCENT,United States Army Central Command
321	ARDA,Advanced Research and Development Activity (became DTO 2006)
322	ARE,UK Admiralty Research Establishment (-1991),United Arab Emirates (ISO 3166 trigram)
323	ARF,ASEAN Regional Forum
324	ARG,Argentina (ISO 3166 trigram)
325	ARH,Armed Reconnaissance Helicopter
326	ARI,Acute Respiratory Infection,U.S. Army Research Institute for the Behavioral and Social Sciences
327	ARL,UK Admiralty Research Laboratory (1921-1977),U.S. Army Research Laboratory,UIUC Aviation Research Laboratory
328	ARM,Anti-Radiation Missile,Adjustable-rate mortgage,Armenia (ISO 3166 trigram)
329	ARNet,Acquisition Reform Network
330	ARP,Applied Research Programme
331	ARPA,Advanced Research Projects Agency
332	ARRC,ACE Rapid Reaction Corps
333	ARRF,Allied Rapid Reaction Force
334	ARRL,American Radio Relay League
335	ARSC,Arctic Region Supercomputing Center
336	ARSPACE,U.S. Army Space Command
337	ART,Adaptive Resonance Theory,Anti-Retroviral Therapy
338	ARTCC,Air Route Traffic Control Center
339	AS,ActionScript
340	AS,American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
341	As,Arsenic
342	aS,Attosiemens
343	ASA,AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
344	ASAP,As Soon As Possible
345	ASARS,Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
346	ASB,Associated Student Body,Alternative Service Book (Church of England)
347	ASBO,Anti-Social Behaviour Order
348	ASCAP,American Society of Composers,Authors,and Publishers
349	ASCC,Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
350	ASCII,American Standard Code for Information Interchange
351	ASD,(U.S.) Assistant Secretary of Defense,autism spectrum disorder
352	ASDIC,Allied Submarine Detection Investigation Committee (Sonar)
353	ASEAN,Association of Southeast Asian Nations
354	ASFAR,Americans for a Society Free of Age Restrictions
355	ASG,Area Support Group
356	ASIC,Australian Securities and Investments Commission,Aviation Security Identification Card
357	ASIO,Australian Security Intelligence Organisation,Audio stream input output
358	ASIP,Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
359	ASM,Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
360	ASMB,American Society for Matrix Biology,Adult Swim Message Board
361	ASME,American Society of Mechanical Engineers,American Society of Magazine ors
362	ASN,Associate of Science in Nursing
363	ASOC, Air Sovereignty Operations Centre,Air Support Operations Centre,Airport Security and Operations Centre,Antarctic and Southern Ocean Coalition,Atlanta Symphony Orchestra Chorus,Australian Standard Offence Classification
364	ASP,Active Server Pages,American Society of Primatologists,Ammunition Supply Point,Application Service Provider (cf internet service provider),Astronomical Society of the Pacific,Association of Surfing Professionals
365	ASPI,Australian Strategic Policy Institute
366	ASR,Alkali-silica reaction,Anti Slip Regulation
367	ASRAAM,Advanced Short-Range Air-to-Air Missile
368	ASSC,Association for the Scientific Study of Consciousness
369	AST,Atlantic Standard Time (UTC−4 hours)
370	ASTIA,Armed Services Technical Information Agency
371	ASTM,American Society for Testing and Materials
372	ASTREA,Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
373	ASUW,AntiSUrface Warfare
374	ASVAB,Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
375	ASW,AntiSubmarine Warfare
376	ASWORG,(U.S.) AntiSubmarine Warfare Operations Research Group
377	At,Astatine
378	aT,Attotesla
379	ATAC,Air Transportable Acoustic Communications
380	ATACMS,Army TACtical Missile System
381	ATAPI,Advanced Technology Attachment Packet Interface
382	ATAS,Air-To-Air Stinger (missile)
383	ATAT,Aiken Tactical Airsoft Team / Star Wars vehicle
384	ATCCIS,Army Tactical Command and Control Information System
385	ATESS,Aerospace and Telecommunications Engineering Support Squadron
386	ATG,Antigua and Barbuda (ISO 3166 and FIFA trigram)
387	ATGM,Anti-Tank Guided Missile
388	ATGW,Anti-Tank Guided Weapon
389	ATI,Allied Telesyn International,Inc.,Array Technologies Incorporated. (ATI Technologies)
390	Atisbo,a Local Government Area in Nigeria named for constituent communities (Ago-Are,Tede,Irawo,Sabe,Baasi,Ofiki and Owo)
391	ATK,Attack
392	ATSD,(U.S.) Assistant Secretary of Defense
393	ATSDR,Agency for Toxic Substances and Disease Registry
394	ATV,All-Terrain Vehicle
395	Au,Gold (Latin Aurum)
396	AUS,Australia (ISO 3166 trigram)
397	Auslan,Australian Sign Language
398	AUT,Austria (ISO 3166 trigram)
399	AUTL,Army Universal Task List
400	Av,Aperture value (photographic mode)
401	aV,Attovolt
402	AVA,American Viticultural Area
403	AVB,Audio Video Bridging
404	AVDLR,Aviation Depot Level Repair
405	AVIM,Aviation Intermediate Maintenance
406	AVLB,Armoured Vehicle Launched Body
407	AVO,Apprehended Violence Order
408	AVP,Arubaanse Volkspartij
409	AVP,Association of Volleyball Professionals
410	AVRE,Armoured Vehicle Royal Engineers
411	AVUM,Aviation Unit Maintenance
412	AVVO,Acute Vaginal Venereal Outbreak
413	AW,Aruba (ISO 3166 digram)
414	aW,Attowatt
415	AWA,American Wrestling Association
416	AWC,Air Warfare Centre
417	AWD,All Wheel Drive
418	AWE,Advanced Warfighting Experiment
419	AWP,Awaiting Parts (SM&R code)
420	AWSIM,Air Warfare SIMulation
421	AWST,Australian Western Standard Time
422	AWW,Above Water Warfare
423	AX,Åland Islands (ISO 3166 digram)
424	AXP,Ambulance eXchange Point
425	AY,Antarctica (FIPS 10-4 territory code)
426	AYBABTU,All Your Base Are Belong To Us
427	AYU,As Yet Unknown
428	AZE,Azerbaijan (ISO 3166 trigram)
429	BBQ,Barbecue
430	BCC,Blind Carbon Copy
431	BEL,Belgium (ISO 3166 trigram)
432	BEN,Benin (ISO 3166 trigram)
433	BEO,Banquet Event Order
434	BERC,Business Environmental Resource Center
435	BER,Bit Error Rate
436	BHR,Bahrain (ISO 3166 trigram)
437	BNS,Bank of Nova Scotia
438	BNSF,Burlington Northern Santa Fe (also AAR reporting mark)
439	BOAC,British Overseas Airways Corporation (predecessor of British Airways)
440	BoAML,Bank of America Merrill Lynch
441	BÖC,Blue Öyster Cult
442	BOFH,Bastard Operator From Hell
443	BOGA,Bend Over and Grab Ankles
444	BOGs,Bunch of Guys
445	BOL,Bolivia (ISO 3166 trigram)
446	BOP,Balance of Payments,
447	BOPB,Biarritz Olympique Pays Basque (the complete name of the rugby club),
448	BOPD,Barrel of Oil Per Day
449	BOS,Battlefield Operating System
450	BRA,Brazil (ISO 3166 trigram)
451	BRAG,Bicycle Ride Across Georgia
452	BS,The Bahamas (ISO 3166 digram),Bassas da India (FIPS 10-4 territory code),Bachelor of Science degree,British subject
453	BSatCoP,Benjamin Sniddlegrass and the Cauldron of Penguins
454	BSNL,Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
455	BSoD,Blue Screen of Death (distinct from BSD)
456	BSW,British Standard Whitworth (screw thread)
457	BSX,Bendigo Stock Exchange
458	Bt,Baronet,Bacillus thuringiensis
459	BTO,Built To Order
460	BTP,British Transport Police
461	BTU,British Thermal Unit
462	BTW,By The Way
463	BU,Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989)
464	BUAV, British Union for the Abolition of Vivisection
465	BUNO,Bureau Number (aircraft serial number)
466	BUR,Burma (ISO 3166 trigram; obsolete since 1989)
467	BVR,Beyond Visual Range,
468	BVT,Bouvet Island (ISO 3166 trigram),
469	BW,Bring Wedges (ISO digram)
470	BW,Botswana (ISO 3166 digram)
471	BWA,Botswana (ISO 3166 trigram)
472	BWC,Biological and Toxin Weapons Convention
473	BWR,Boiling-Water Reactor
474	BX,Base eXchange
475	BY,Burundi (FIPS 10-4 country code) -,Belarus (ISO 3166 digram)
476	BYOC,Bring Your Own Computer (play on BYOB)
477	BYOF,Bring Your Own Flask
478	BYS,Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
479	BYU,Brigham Young University
480	BZ,Belize (ISO 3166 digram)
481	BZP,Benzylpiperazine
482	c,Centi
483	c2c,the British rail company formerly known as LTS Rail
484	Ca,Calcium
485	CACM,Central American Common Market
486	CACM,Communications of the ACM
487	CADPAT,CAnadian Disruptive PATtern
488	CAEn,Close Action Engagement (constructive simulation)
489	CAFAD,Combined Arms For Air Defence
490	CAFE,Corporate Average Fuel Economy standard
491	CAI,Computer Assisted Instruction
492	CAIR,Council on American-Islamic Relations
493	CALL,Center for Army Lessons Learned
494	CalPERS,California Public Employees' Retirement System
495	Caltrans,California Department of Transpotation
496	CAMRA,CAMpaign for Real Ale
497	CAN,Canada (ISO 3166 trigram)
498	CANA,Convulsive Antidote,Nerve Agent
499	CANDU,CANada Deuterium Uranium (nuclear reactor design)
500	CARMONETTE,Computerized Monte Carlo Simulation
501	CARP,Computed Air Release Point
502	CART,Championship Auto Racing Teams (now defunct)
503	CASA,Civil Aviation Safety Authority
504	CASS,Command Activated Sonobuoy System
505	CASTFOREM,Combined Arms and Support Task FORce Evaluation Model
506	CASTOR,Canadian Automatic Small Telescopes for Orbital Research
507	CAT,Community Acceptance Testing
508	CATK,Counterattack
509	CATS,Computer Active Technology Suspension
510	CATT,Combined Arms Tactical Trainer
511	CAV,Cavalry
512	CAW,Canadian Auto Workers (trade union)
513	CBLA,Comparative bullet lead analysis
514	CBM,Canadian Baptist Ministries
515	CBM,Commodore Business Machines
516	CBML,Coalition Battle Management Language
517	CBN,CardsApp Brand Number
518	CBOL,Consortium for the Barcode of Life
519	CBOT,Chicago Board of Trade
520	CBR,Case-Based Reasoning
521	CC,carbon copy
522	CCA,Counter Command Activity
523	CCF,Cartoon Cartoon Fridays
524	CCGH,Canadian Coast Guard Hovercraft
525	CCH,Computer-Controlled Hostile
526	CCOP,Coalition Common Operating/Operational Picture
527	CCPA,Consumer Credit Protection Act
528	CCR,Creedence Clearwater Revival
529	CCRAp,Canadian Conservative Reform Alliance party
530	CCRP,Command and Control Research Program
531	CCRTS,Command and Control Research and Technology Symposium
532	CCSCS,Consultative Committee for Space Data Systems
533	CCSCS,Coordinadora de Centrales Sindicales del Cono Sur
534	CCSK,Cyclic Code Shift Keying
535	CCT,Current Commitments Team
536	Cd,Cadmium
537	cd,Candela
538	CD,Compact Disc
539	CD1,Cluster of Differentiation 1 (a small gene family)
540	CDA,UK Centre for Defence Analysis
541	CDC,Control Data Corporation,Cult of the Dead Cow
542	CDD,Capabilities Development Document
543	CDE,Chemical Defence Equipment
544	CDipAF,Certified Diploma in Accounting and Finance
545	CDL,Commercial driver's license
546	CDMA,Code Division Multiple Access
547	CDMSII,Cryogenic Dark Matter Search II
548	Cdr,Commander
549	CDS,Chief of the Defence Staff,Credit default swap
550	CDT,Central Daylight Time (UTC−5 hours)
551	Cdt,Commandant
552	Ce,Cerium
553	CE,Christian/Common Era
554	CEA,Campaign Effectiveness Analysis
555	CECOM,U.S. Army Communications and Electronics Command
556	CEI,Competitive Enterprise Institute
557	CENTCOM,United States Central Command
558	CENTO,Central Treaty Organization (Baghdad Pact)
559	CEO,Chief Executive Officer
560	CEP,Circular Error Probable
561	CERT,Computer Emergency Response Team
562	CESS,Centre for Earth Science Studies (India)
563	CEST,Central European Summer Time
564	CET,Central European Time
565	CEWC,Council for Education in World Citizenship
566	Cf,Californium
567	CFES,Continuous Flow Electrophoresis System
568	CFFZ,Call For Fire Zone
569	CFHT,Canada-France-Hawaii Telescope
570	CFI,Center for Inquiry (CSICOP)
571	CFLCC,Coalition Forces Land Component Command
572	CFM,Certified Facilities Manager
573	CFO,Chief Financial Officer
574	CFRP,Carbon fibre reinforced plastic
575	CFS,Chronic Fatigue Syndrome
576	CFSP,Common Foreign and Security Policy
577	CFU,Colony Forming Unit in Microbiology
578	CFV,Cavalry Fighting Vehicle
579	CFZ,Critical Friendly Zone
580	CGH,Comparative Genomic Hybridisation
581	CGIG,Cross-Government Implementation Group
582	CGS,Chief of the General Staff
583	CGT,Capital Gains Tax
584	ch,ch(L) is used to denote the Chern character of a line bundle
585	CHAMPUS,(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
586	CHAOS,Cambridge Heart Anti-Oxidant Study
587	CHAPS,Clearing House Automated Payment System
588	CHDK,Canon Hack Development Kit (Canon camera firmware hack)
589	CHiP,California Highway Patrol
590	CHIPS,Cosmic Hot Interstellar Plasma Spectrometer
591	CHL,Chile (ISO 3166 trigram)
592	CHLA,Core Historical Literature of Agriculture
593	CHN,China (ISO 3166 trigram)
594	CHOGM,Commonwealth Heads of Government Meeting
595	CHP,California Highway Patrol,Combined Heat and Power
596	CHPSO,California Hospital Patient Safety Organization
597	CHRS,Canadian Heart Rhythm Society
598	CHT,Certified Hand Therapist
599	Ci,Curie
600	CIB,Complete In Box (Internet auction/trading listings)
601	CIBC,Canadian Imperial Bank of Commerce
602	CID,Certified Interior Designer
603	CIEF,Comité international d'enregistrement des fréquences (International Frequency Registration Board)
604	CIF,Cost,Insurance,and Freight (Paid) (shipping)
605	CINC,Commander in Chief
606	CINEOS,Campo Imperatore Near-Earth Object Survey
607	CIO,Chief information officer,Congress of Industrial Organizations
608	CIPE,(European) Centre for International Political Economy
609	CIR,(Commander's) Critical Information Requirements
610	CIR,Corotating Interaction Region
611	CISA,(U.S.) C4I Integration Support Activity
612	CISB,Complete In Sealed Box (Internet auction/trading listings)
613	CISPR,Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
614	CISSP,Certified Information Systems Security Professional
615	CIV,Côte d'Ivoire (ISO 3166 trigram)
616	CIVETS,Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
617	CIVPOP,Civilian Population
618	CIWS,Close-In Weapon System
619	CJCS,Chairman of the Joint Chiefs of Staff
620	CJO,Chief of Joint Operations
621	CJTF,Combined Joint Task Force
622	CKND,Codename: Kids Next Door
623	Cl,Chlorine
624	CLA,Clutterers Anonymous
625	CLEC,Competitive Local Exchange Carrier
626	CLEMARS,California Law Enforcement Mutual Aid Radio System
627	CLIC,Compact LInear Collider
628	CLO,Cornell Lab of Ornithology
629	CLOS,Command to Line-Of-Sight (missile control system)
630	CLPFC,CentroLateral PreFrontal Cortex
631	CLRP,College Loan Repayment Program
632	Cm,Curium
633	CMHC,Canada Mortgage and Housing Corporation
634	CMIIAW,Correct me if I am wrong
635	CMIS,Common management information service
636	CMJ,Christopher Martin-Jenkins (BBC sports commentator)
637	CML,Chemical,Chronic Myelogenous Leukemia (formerly Chronic Myeloid Leukemia)
638	CMM,Capability Maturity Model
639	CMMC,Corps Materiel Management Centre
640	CMP,Common [Operating/Operational] Maritime Picture
641	CMPD,Charlotte Mecklenburg Police Department
642	CMPD,Chronic Myeloproliferative Disease
643	CMT,Country Music Television
644	CMYK,Cyan Magenta Yellow Key/blacK (colour model)
645	CNBC,Consumer News and Business Channel
646	CNF,Cost and Freight
647	CNI,Clinical Nursing Intern
648	CNV,Copy-Number Variable (genetics)
649	Co,Cobalt
650	COB,Close Of Business [day]
651	COBRA,Consolidated Omnibus Budget Reconciliation Act of 1985
652	CoDA,Co-Dependents Anonymous
653	COGENT,Cognitive Objects within a Graphical EnviroNmenT
654	COIL,Chemical Oxygen Iodine Laser
655	COK,Cook Islands (ISO 3166 trigram)
656	COL,Colombia (ISO 3166 trigram)
657	COLA,Cost Of Living Adjustment
658	COM,Comoros (ISO 3166 trigram),Component Object Model
659	COMECON,Council for Mutual Economic Assistance (economic counterpart of the Warsaw Pact,1949-1991)
660	CONAD,U.S. Continental Air Defense Command
661	CONCACAF,Confederation Of North,Central American and Caribbean Association Football
662	CONUS,Continental United States
663	COO,Chief Operating Officer
664	COPE,U.K. Committee On Publication Ethics
665	COPUS,U.K. Committee on the Public Understanding of Science
666	CORD,Common Operational Requirements Document
667	CORE,Consortium for Oceanographic Research and Education
668	COROT,COnvection,ROtation and planetary Transits
669	COS,Cooper Ornithological Society
670	COSER,COoperative SERvice
671	CoT,Car of Tomorrow (former NASCAR race car design)
672	COTS,Commercial Off The Shelf
673	CPA,Certified Public Accountant
674	CPCU,Certified Property Casualty Underwriter
675	CPD,Capabilities Production Document
676	CPE,Certificate of Proficiency in English
677	CPE,Certified Professional Ergonomist
678	CPG,Clinical Practice Guideline
679	CPI,CERDEC Command,Power and Integration
680	CPIM,Certification on Production and Inventory Management
681	CPIR,Computationally-Private Information Retrieval
682	CPON,Certified Pediatric Oncology Nurse
683	CPPCC,Chinese People's Political Consultative Conference
684	CPR,Canadian Pacific Railway
685	CPR,Cardiopulmonary resuscitation
686	CPSM,Continuous Phase Shift Modulation
687	CPSU,Communist Party of the Soviet Union
688	CPT,Contingency Planning Team
689	CPU,Contract Postal Unit
690	CPV,Cape Verde (ISO 3166 trigram)
691	CPX,Command Post eXercise
692	Cr,Chromium
693	CRAM,Combined Radiometric Correction Model
694	CRD,Capstone Requirements Document
695	CREB,Cyclic AMP-response Element Binding (protein)
696	CREN,Christian Real Estate Network Real Estate Association
697	CRIPL,Consolidated Remain-In-Place List
698	CRTC,Canadian Radio-television and Telecommunications Commission
699	Cs,Caesium
700	CSERIAC,(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
701	CSG,Corps Support Group
702	CSI,see entry
703	CSICOP,Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
704	CSIP,Commercial Stable Image Platform (AMD)
705	CSK,Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
706	CSL,U.K. Central Science Laboratory
707	CSPI,Center for Science in the Public Interest
708	CSR,Control Supply Rate
709	CSR,Corporate Social Responsibility
710	CSRC,Conflict Studies Research Centre
711	CSRF,Cross-Site Request Forgery
712	CST,Central Standard Time (UTC−6 hours)
713	CTBT,Comprehensive [Nuclear] Test Ban Treaty
714	CTDB,Compact Terrain Data Base (file format)
715	CTE,Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984),Chronic traumatic encephalopathy
716	CTGF,connective tissue growth factor
717	CTI,Co-operative Target Identification
718	CTIL,Critical Tracked Items List
719	CTIS,Central Tire Inflation System
720	CTMS,Clinical Trial Management System
721	CTO,Chief Technical Officer,Chief Technology Officer
722	CTS,Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
723	CTSS,Compatible Time-Sharing System
724	CTU,Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
725	CTVT,Canine Transmissible Venereal Tumour
726	CU,Carrie Underwood,Cuba (FIPS 10-4 country code; ISO 3166 digram)
727	Cu,Copper (Latin Cuprum)
728	CUB,Cuba (ISO 3166 trigram)
729	CUCV,Commercial Utility Cargo Vehicle
730	CUPS,Common Unix Printing System
731	CUPW,Canadian Union of Postal Workers
732	CUREA,Consortium for Undergraduate Research and Education in Astronomy
733	CuW,Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
734	CUW,Curaçao (ISO 3166 trigram)
735	CV,curriculum vitae (résumé)
736	CVLL,Crypto Variable Logic Label
737	CVSD,Continuous Variable Slope Delta (modulation)
738	CVT,Continuously Variable Transmission
739	CWC,Chemical Weapons Convention
740	CWRU,Case Western Reserve University
741	CWS,Canadian Wildlife Service
742	CXR,Christmas Island (ISO 3166 trigram)
743	CYM,Cayman Islands (ISO 3166 trigram)
744	CZE,Czech Republic (ISO 3166 trigram)
745	CZF,(Christian Zombie Fan)
746	CZMA,(US) Coastal Zone Management Act
747	d,Deci
748	D,Deuterium
749	DA,Denmark (FIPS 10-4 country code),Debtors Anonymous,U.S. Department of the Army,District Attorney
750	DAES,Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis,Experimentation and Simulation
751	DAF,Dissolved Air Flotation,a technique used in water treatment
752	DAFIF,Digital Aeronautical Flight Information File
753	DAK,Disney's Animal Kingdom
754	DAO,Division Ammunition Officer
755	DAQ,Data acquisition,Delivered Audio Quality
756	DARE,Drug Abuse Resistance Education
757	DARO,(U.S.) Defense Airborne Reconnaissance Office
758	DARPA,U.S. Defense Advanced Research Projects Agency
759	DART,Disaster Assistance Response Team,Dublin Area Rapid Transit
760	DAS,Defensive Aids Suite
761	DASD,(U.S.) Deputy Assistant Secretary of Defense
762	DASL,Datapoint's Advanced Systems Language
763	DAU,(U.S.) Defense Acquisition University
764	DAWN,(U.S.) Drug Abuse Warning Network
765	dB,Decibel
766	DB,Deutsche Bahn
767	Db,Dubnium
768	DBA,De Bellis Antiquitatis (miniature wargaming rules)
769	DBBL,(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
770	DBDO,Desert BDO
771	DBE,Dame Commander of the Order of the British Empire
772	DBF,Detection By Fire (weapon launch signature)
773	DBR,De Bellis Renationis (miniature wargaming rules)
774	DBRA,Davis-Bacon Related Acts
775	DBS,Direct Broadcast Services (television)
776	DC,da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current,District of Columbia (postal symbol),Douglas Aircraft Company,Dublin Core,Duty Cycle
777	DCA,Defensive Counter Air,Drum Corps Associates,DiChloroAcetate
778	DCAA,(U.S.) Defense Contract Audit Agency
779	DCAS,Devon and Cornwall Archery Society
780	DCC,Dallas Christian College
781	DCD,[Organ] Donation after Cardiac Death
782	DCE,Data Communication Equipment
783	DCFC,Death Cab for Cutie
784	DCI,Detection,Classification and Identification,Drum Corps International,Duellists' Convocation International,now known simply by the initials
785	DCL,Disney Cruise Line
786	DCN,Deacon
787	DCOM,Disney Channel Original Movie
788	DCSOPS,Deputy Chief of Staff for Operations and plans
789	DCW,Digital Chart of the World
790	DCYSC,Discovery Channel Young Scientist Challenge
791	DDA,Deputy District Attorney
792	DDN,U.S. Defense Data Network
793	DDS,Doctor of Dental Surgery
794	DDT,Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
795	DE,Delaware (postal symbol),Germany (ISO 3166 digram)
796	DEA,Drug Enforcement Administration
797	DEA,Drug Enforcement Agency
798	DEC, Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
799	DeCA,(U.S.) Defense Commissary Agency
800	DEFCON,Defence readiness condition
801	DEFRA,(UK) Department for Environment,Food and Rural Affairs
802	DELT,Dual Ended Line Test (ing)
803	DEM,Data Exchange Mechanism,Digital Elevation Model
804	DEN,Denmark (IOC and FIFA trigram,but not ISO 3166)
805	DEPSECDEF,(U.S.) Deputy Secretary of Defense
806	DERA,British Defence Evaluation and Research Agency (1995-2001)
807	DES,Deep Ecliptic Survey
808	DEU,Germany (ISO 3166 trigram)
809	DFAS,(U.S.) Defense Finance and Accounting Service
810	DFCB,Data Format Control Book
811	DfID,UK Department for International Development
812	DFM,Discrete Field Model see Superluminal motion
813	DFM,Dynamic Flowgraph Methodology
814	DFSP,Dermatofibrosarcoma protuberans
815	DfT,UK Department for Transport
816	DFTBA,Don't Forget To Be Awesome,a term commonly used by the Vlogbrothers
817	DGPS,Differential GPS
818	DGZ,Desired Ground Zero
819	DH,dear husband (increasingly prevalent on social mailing lists,blogs,and bulletin boards),Designated hitter
820	DHA,DocosaHexaenoic Acid
821	DHHS,(U.S.) Department of Health and Human Services
822	DHL,Dalsey,Hillblom,and Lynn (courier service)
823	DHRA,(U.S.) DoD Human Resources Activity
824	DHS,U.S. Department of Homeland Security
825	DHSS,UK Department of Health and Social Security
826	DHTFYSS,U.S. Don't Have Time For You Silly S****
827	DHY,Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
828	DIA,U.S. Defense Intelligence Agency
829	DIAC,Department of Immigration and Citizenship (Australia) [1]
830	DiC,Design Island Centre (computing usually used in a teaching situation)
831	DICASS,DIrectional Command Activated Sonobuoy System
832	DIFAR,DIrectional Frequency Analysis and Recording
833	DIME,Dense Inert Metal Explosive
834	DINKY,Double Income,No Kids Yet
835	DIP,Dual In-line Package (electronics)
836	DIPS,Defense independent pitching statistics
837	DIR,Defence Industrial Research
838	DIS,Defence Intelligence Staff,(U.S.) Defense Investigative Service,Distributed Interactive Simulation,Draft International Standard (ISO)
839	DISA,U.S. Defense Information Systems Agency,Distinguished Individual Service Award
840	DISCOM,Division Support Command
841	DISE,Deployable Intelligence Support Element
842	DISSTAF,DIS Search and Target Acquisition Fidelity experiment
843	DITY,Do-It-Yourself
844	DIVAD,Division Air Defence
845	DIY,Do It Yourself
846	DJ,Disc Jockey,Dinner Jacket,Djibouti (ISO 3166 digram; FIPS 10-4 country code)
847	DJD,Degenerative Joint Disease,Dublin Julian Day,Discoveries in the Judaean Desert
848	DJI,Djibouti (ISO 3166 trigram)
849	DJS,Director,Joint Staff
850	DK,Denmark (ISO 3166 digram)
851	DL,Dexter's Laboratory
852	DLA,U.S. Defense Logistics Agency,Dental Laboratories Association
853	DLIC,Detachment Left-In-Contact
854	DLIR,Depot-Level Inspection and Repair
855	DLPMC,DorsoLateral PreMotor Cortex
856	DLR,Deutsches Zentrum für Luft,und Raumfahrt (German,German Aerospace Centre),Docklands Light Railway
857	DLRP,Data Link Reference Point
858	DLS,Deep Lens Survey
859	DLSA,(U.S.) Defense Legal Services Agency
860	DLSc,Diploma in Library Science
861	DLSC,U.S. Defense Logistics Services Center,U.S. Defense Logistics Support Command,Department of Library Special Collections (Western Kentucky University Libraries),Direct Loan Servicing Center,Directorate of Land Strategic Concepts (Canada),Dominican Lay Scholars Community
862	DLTBGYD,Don't let the bastards grind you down
863	DM,Dominica (ISO 3166 digram),Dungeon Master (role-playing games)
864	DMA,Designated market area (primarily a U.S. term),U.S. Defense Mapping Agency (became NIMA,then NGA),Direct Memory Access (computing),Dominica (ISO 3166 trigram)
865	DMC,(U.S.) Defense Management Council
866	DMCA,Digital Millennium Copyright Act
867	DMM,Digital Multimeter
868	DMOC,Distributed Mission Operations Centre
869	DMPA,(U.S.) Defense Medical Programs Activity
870	DMPFC,DorsoMedial PreFrontal Cortex
871	DMPK,Drug Metabolism and Pharmacokinetics
872	DMRB,Design Manual for Roads and Bridges
873	DMS,U.S. Defense Message System
874	DMSP,U.S. Defense Meteorological Satellite Program
875	DMT,Dimethyltryptamine
876	DMU,Diesel Multiple Unit,a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
877	DMV,Department of Motor Vehicles
878	DMZ,DeMilitarized Zone
879	DN,Deacon
880	DNA,U.S. Defense Nuclear Agency,DeoxyriboNucleic Acid,Douglas Noël Adams
881	DNAW,Day Night All Weather
882	DND,Department of National Defence (Canada),Do Not Disturb
883	DNDi,Drugs for Neglected Diseases initiative
884	DNDO,U.S. Domestic Nuclear Detection Office
885	DNK,Denmark (ISO 3166 trigram)
886	DNM,Defence Nuclear Material
887	DNR,Do Not Resuscitate
888	DNS,Domain Name System
889	DO,Dominica (FIPS 10-4 country code),Dominican Republic (ISO 3166 digram),Doctor of Osteopathic Medicine
890	DOA,Dead On Arrival,Dead or Alive
891	DOB,Date Of Birth
892	DOD,U.S. Department of Defense
893	DODAF,U.S. Department of Defense Architectural Framework
894	DoDD,U.S. Department of Defense Directive
895	DoDEA,(U.S.) Department of Defense Education Activity
896	DOE,U.S. Department of Energy
897	DOHC,Dual-OverHead-Cam engine
898	DOI,U.S. Department of the Interior
899	DORA,Defence of the Realm Act
900	DOS,Density of State
901	DOT,Department of Transportation (U.S. federal or state),Damage Over Time (common in World of Warcraft)
902	DOTA,short-form for DEFENSE OF THE ANCIENTS a popular online epic game
903	DotD,Deal of the Day (marketing gimmick)
904	DOTMLPF,Doctrine,Organization,Training,Materiel,Leadership,Personnel,and Facilities (mnemonic)
905	DOW,Died of Wounds
906	DP,Decision Point,Dynamic Programming
907	DP,Division de production (Algerian petroleum company)
908	DPA,UK Defence Procurement Agency
909	DPCO,Double-Pole Change Over
910	DPDT,Double-Pole Double-Throw
911	DPI,Dots Per Inch
912	DPICM,Dual-Purpose Improved Conventional Munition
913	DPKO,UN Department for Peacekeeping Operations
914	DPMO,(U.S.) Defense Prisoner of War/Missing Personnel Office
915	DPPDB,Digital Point Positioning Database
916	DPRE,Displaced Person or Refugee (plural Displaced Persons and Refugees) (originally Displaced Persons,Refugees,Evacuees)
917	DPRK,Democratic People's Republic of Korea
918	DPST,Double-Pole Single-Throw
919	DQ,Dairy Queen,Jarvis Island (FIPS 10-4 country code)
920	DR,Dead Reckoning,Dominican Republic (FIPS 10-4 country code),Danmarks Radio (Danish Broadcasting Corporation)
921	DRA,Defence Research Agency (UK,1991-1995),Democratic Republic of America
922	DRC,Democratic Republic of the Congo
923	DRDC,Defence Research & Development Canada
924	DREA,Defence Research Establishment Atlantic (obsolete 2002)
925	DRES,Defence Research Establishment Suffield (obsolete 2002)
926	DRET,Defence Research Establishment Toronto (obsolete 2002)
927	DREV,Defence Research Establishment Valcartier (obsolete 2002)
928	DRI,Detection,Recognition,Identification,Dietary Reference Intake
929	DRIC,(U.S.) Defense Research Information Center
930	DRL,Daytime Running Lights,Dorman Roberts Ltd.
931	DRMS,(U.S.) Defense Revitalization and Marketing Service
932	DRPR,Drawing Practices
933	DRT,Document Related Technologies
934	Ds,Darmstadtium
935	DS,Dear son (increasingly prevalent on social mailing lists,blogs,and bulletin boards),Defence Scientist,Direct Support,Dust Storm (METAR Code)
936	DSA,(U.S.) Defense Support Activities,Division Support Area
937	DSAA,(U.S.) Defense Security Assistance Agency,Driving Schools Association of the Americas,DECT Standard Authentication Algorithm
938	DSAS,Disney Sing Along Songs
939	DSB,(U.S.) Defense Science Board
940	DSC,Differential Scanning Calorimeter,Digital Selective Calling,Digital Still Camera,Distinguished Service Cross,Doctor of Surgical Chiropody (obsolete),Document structure convention (PostScript programming),Dynamic Stability Control
941	DSCS,U.S. Defense Satellite Communications System
942	DSCSOC,DSCS Operations Center
943	DSD,Defence Studies Department (King's College,London)
944	DSE,Dry Sheep Equivalent
945	DSG,Direct-Shift Gearbox
946	DSID,Dismounted Soldier Identification System
947	DSL,Digital Subscriber Line
948	DSLR,Digital single-lens reflex (camera)
949	DSM,Diagnostic and Statistical Manual of Mental Disorders
950	DSN,Deep Space Network
951	DSP,Defense Standardization Program,Defense Support Program,
952	DSPL,Design Specialists and Plans Language
953	DSR,Deformed Special Relativity
954	DSRV,Deaf Sports Recreation Victoria,Deep Submergence Rescue Vehicle
955	DSS,Digitized Sky Survey,Discarding-Sabot Shell (ammunition)
956	DST,Daylight Saving Time
957	DSTL,British Defence Science and Technology Laboratory
958	DSWA,(U.S.) Defense Special Weapons Agency
959	DTA,Dental Technologists Association
960	DTD,Digital Terrain Data
961	DTE,Data Terminal Equipment,Down To Earth
962	DTG,Date-Time Group
963	DTH,Direct To Home (television)
964	DTI,UK Department of Trade and Industry
965	DTIC,(U.S.) Defense Technical Information Center
966	DTL,Diode-Transistor Logic (electronics)
967	DTLOMS,Doctrine,Training,Leader development,Organization,Materiel,and Soldier (mnemonic)
968	DTMF,Dual-tone multi-frequency signaling
969	DTO,Disruptive Technology Office (was ARDA)
970	DTOMLS,Doctrine,Training,Organization,Materiel,Leader and Soldier development (mnemonic)
971	DTR,Determine The Relationship
972	DTSA,(U.S.) Defense Technology Security Administration
973	DU,Depleted Uranium,Dust (METAR Code)
974	DUI,Data Use Identifier,Data Use Institute,Davis Unified Ignition,Diving Unlimited International,Documento Único de Identidad,Documento Unico de Importación,Driving Under the Influence,Duke University Improv
975	DUMBO,Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
976	DUSD,(U.S.) Deputy Under-Secretary of Defense
977	DVLC,UK Driver and Vehicle Licencing Centre
978	DVM,Doctor of Veterinary Medicine
979	DVO,Direct View Optics
980	DVOM,Digital Volt-Ohm Meter
981	DVP,various meanings (disambiguation page)
982	DW,Drum Workshop
983	DWI,Dance With Intensity,Danish West Indies,Diffusion-weighted imaging,Direct water injection,Disaster Welfare Inquiry,Drinking Water Inspectorate,Driving While Intoxicated/Impaired
984	DWIM,Do What I Mean
985	DWM,Doctor Who Magazine
986	DWTS,Dancing with the Stars
987	DWW,Down with Webster
988	DX,Dexterity (role-playing games),DeXtrorphan,Distant (radio),D-Generation X (professional wrestling stable)
989	DXA,Dual-energy X-ray Absorptiometry
990	DXM,DeXtroMethorphan
991	DY,Dahomey (ISO 3166 digram; obsolete since 1977)
992	Dy,Dysprosium
993	DZ,Algeria (ISO 3166 digram),Drizzle (METAR Code),Drop Zone
994	DZA,Algeria (ISO 3166 trigram)
995	E,East
996	EA,Electronic Attack,Emotions Anonymous,Engagement Area,Electronic Arts,Enrolled Agent,Environmental Assessment,Enterprise Architect,Exaampere
997	EABU,Explain Acronyms Before Use
998	EAC,Echelons Above Corps
999	EAPC,Euro-Atlantic Partnership Council
1000	EAST,Experimental Advanced Superconducting Tokamak
1001	EBD,Electronic Brake Distribution
1002	EBE,Extraterrestrial Biological Entity
1003	EBO,Effects Based Operations,Encyclopædia Britannica Online,European Board of Ophthalmology
1004	EBSA,Employee Benefits Security Administration
1005	EBW,Electron Beam Welding
1006	EBW,Exploding BridgeWire
1007	ECASS,European Centre for Analysis in the Social Sciences [1]
1008	ECB,England (and Wales) Cricket Board,European Central Bank
1009	ECBR,European Coalition for Biomedical Research
1010	ECCM,Electronic Counter-Counter-Measures
1011	ECFS,Electronic Case Filing System
1012	ECG,Electrocardiogram
1013	ECHO,Each Community Helps Others (EPA programme),Educational Concerns for Hunger Organization,European Commission Host Organization,European Commission Humanitarian aid Office,Exchange Clearing House,Expanded Characteristic Option,Explanatory Coherence by Harmony Optimization
1014	ECHR,European Convention on Human Rights
1015	ECJ,European Court of Justice
1016	ECL,Emitter Coupled Logic (electronics)
1017	ECM,Electronic Counter-Measures,Enterprise Content Management
1018	ECommHR,European Commission on Human Rights
1019	ECS,Emergency Contact System,Enhanced Chip Set (computing),EOSDIS Core System,Extended Chip Set (computing)
1020	ECSC,European Coal and Steel Community (distant ancestor of the EU)
1021	ECT,ElectroConvulsive Therapy
1022	ECtHR,European Court of Human Rights
1023	ECU,Ecuador (ISO 3166 trigram),European Currency Unit (ancestor of the euro)
1024	ECW,Eastern Championship Wrestling/Extreme Championship Wrestling,ED[edit]
1025	EDA,European Defence Agency
1026	EDAC,Error Detection And Correction
1027	EDCS,Environmental Data Coding Specification
1028	EDD,Earliest due date,Electron-detachment dissociation,Elena Delle Donne (American basketball player),Employment Development Department (California state agency),End-diastolic dimension,Expected Date of Delivery (pregnancy)
1029	EDGAR,Electronic Data Gathering,Analysis,and Retrieval (U.S. Securities and Exchange Commission filings database)
1030	EDH,Eastman Dental Hospital
1031	EDS,Electronic Data Systems,Electronic Differential System
1032	EDSA,Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1033	EDT,Eastern Daylight Saving Time (UTC−4 hours)
1034	EDTA,Electric Drive Transportation Association,EthyleneDiamineTetraAcetic acid,EE[edit]
1035	EE,Estonia (ISO 3166 digram; from the country's native name of Eesti),Electrical engineering,Electrical Engineer,E&E,Escape and Evasion (training)
1036	EEC,European Economic Community (predecessor of the EU)
1037	EEG,ElectroEncephaloGram
1038	EENT,End Evening Nautical Twilight
1039	EEO,Equal Employment Opportunity
1040	EEOC,(U.S.) Equal Employment Opportunity Commission
1041	EEZ,Economic Exclusion Zone or Exclusive Economic Zone
1042	EF,Electro-focus (Canon lens mount),Entry Foyer,Exafarad
1043	EFF,Electronic Frontier Foundation
1044	EFL,English as a Foreign Language
1045	EFM,Enterprise Feedback Management
1046	EFOA,European Fuel Oxygenates Association
1047	EFSA,European Food Safety Authority
1048	EFT,Electronic Fund Transfer
1049	EFTA,European Free Trade Area,European Free Trade Association
1050	EFV,Expeditionary Fighting Vehicle
1051	EG,Egypt (ISO 3166 digram; FIPS 10-4 country code)
1052	EGBUS,External Genitalia,Bartholin's glands,Urethra & Skene's glands
1053	EGCG,EpiGalloCatechin-3-Gallate
1054	EGIS,Erieye Ground Interface Segment
1055	EGRET,Energetic Gamma-Ray Experiment Telescope
1056	EGY,Egypt (ISO 3166 trigram)
1057	EH,Exahenry,Western Sahara (ISO 3166 digram)
1058	EHA,Education for All Handicapped Children Act (U.S. federal legislation; since superseded by the Individuals with Disabilities Education Act),Emotional Health Anonymous
1059	EHF,Extremely High Frequency
1060	EHR,Equipment History Record
1061	Ei,Exbi
1062	EI,Ireland (FIPS 10-4 country code; from Éire)
1063	EIA,Environmental Impact Assessment
1064	EIAH,Encyclopedia of Iranian Architectural History
1065	EIAH,Environnements Informatiques pour l'Apprentissage Humain
1066	EIC,East India Company
1067	EICS,East India Company's Service
1068	eID,electronic ID
1069	EIRP,Effective Isotropic Radiated Power
1070	EIS,Environmental Impact Statement
1071	EJ,Exajoule
1072	EK,Equatorial Guinea (FIPS 10-4 country code),Exakelvin
1073	EKG,Electrocardiogram (from German Elektrokardiogramm)
1074	EKMS,Electronic Key Management System
1075	EL,Exalitre
1076	ELF- Earth Liberation Front,Endangered Language Fund,Eritrean Liberation Front,Executable and Linkable Format,Extremely Low Frequency
1077	ELINT,Electronic Intelligence
1078	ELL,English Language Learner
1079	ELM,Edge-Localised Mode (plasma physics)
1080	ELO,Electric Light Orchestra
1081	ELP,Emerson,Lake & Palmer,European Left Party
1082	ELSS,Emergency Life Support Stores
1083	EM,ElectroMagnetism/ElectroMagnetic
1084	Em,Exametre
1085	EMA,European Medicines Agency
1086	EMC,Electric Membership Corporation,Electromagnetic Compatibility,Electro-Motive Corporation,European Muon Collaboration,Evergreen Marine Corporation
1087	EMCON,(Electromagnetic) Emissions Control
1088	EMD,General Motors Electro-Motive Division,Engineering and Manufacturing Development,European Missile Defence
1089	EMDG,Euro-Missile Dynamics Group
1090	EMDR,Eye Movement Desensitisation and Reprocessing
1091	EMF,Electromotive force,Epsom Mad Funkers (1990s-2000s indie dance band)
1092	EMG,ElectroMyoGraph
1093	EMO,Emergency Measures Organisation, Emotional
1094	EMP,ElectroMagnetic Pulse
1095	EMS,Emergency Medical Services
1096	EMT,Emergency Medical Technician
1097	EMU,Electric Multiple Unit,a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
1098	EN,Corps of Engineers,Estonia (FIPS 10-4 country code),Exanewton
1099	ENCODE,Encyclopedia of DNA Elements (human genome data project)
1100	ENE,East North-East
1101	ENG,England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1102	ENT,Ear,Nose and Throat
1103	ENTEC,Euro NATO Training Engineer Centre
1104	ENVL,Envelope
1105	ENY,Enemy
1106	EO,Electro-Optics,Engagement Operations
1107	EOD,Explosive Ordnance Disposal
1108	EOG,ElectroOculoGraphy
1109	EOM,End of Message
1110	EOS,Earth Observation Satellite, Electro-Optical System,Canon's autofocusing system for film and digital SLR cameras,Electrophoresis Operations in Space,a space manufacturing project of the McDonnell Douglas Astronautics Company
1111	EOSAT,Earth Observation Satellite
1112	EOSDIS, Earth Observation Satellite Data and Information System
1113	EOTS,Electro-Optical Tactical Sensor, Eye Of The Storm (World of Warcraft)
1114	EP,European Parliament
1115	EP,Extended play
1116	EPA,EicosaPentaenoic Acid,Environmental Protection Agency
1117	EPCOT,Experimental Prototype Community Of Tomorrow
1118	EPCR,Endothelial protein C receptor,European Professional Club Rugby
1119	EPGS,EOS Polar Ground Sites
1120	EPIRB, Emergency Position Indicating Radio Beacon
1121	EPL,English Premier League
1122	EPOS,Electronic Point Of Sale
1123	EPPA,Employee Polygraph Protection Act
1124	EPR,European Pressurised [Nuclear] Reactor
1125	EPW,Earth Penetrator Weapon/Warhead,Economic and Political Weekly (Indian publication),Enemy Prisoner of War,EQ[edit]
1126	EQ,Emotional Quotient
1127	EQG,Equatorial Guinea (FIFA trigram,but not IOC or ISO 3166)
1128	ER,Emergency Room,Eritrea (ISO 3166 digram; FIPS 10-4 country code)
1129	Er,Erbium
1130	ERA,Earned run average,Engineering Research Associates,Equal Rights Amendment,English Racing Automobiles,European Railway Agency
1131	ERCIM, European Research Consortium for Informatics and Mathematics
1132	ERI,Eritrea (ISO 3166 trigram)
1133	ERLAWS,Eastern Ruapehu Lahar Alarm and Warning System
1134	EROS,Earth Resources Observation System
1135	ERP,Engineer Regulating Point
1136	ERR,Eesti Rahvusringhääling
1137	ERS,Earth Resources Survey
1138	ERTS,Earth Resources Technology Satellite (became Landsat)
1139	ERV,Endogenous RetroVirus
1140	Es,Einsteinium,Exasecond
1141	ES,El Salvador (FIPS 10-4 country code),Electronic warfare Support,Exasiemens,Spain (ISO 3166 digram; from the country's native name of España)
1142	ESA,Electro-Spark Alloying,Endangered Species Act,European Space Agency
1143	ESC,Embryonic Stem Cell,Electronic Stability Control
1144	ESD,ElectroStatic Discharge
1145	ESDP,European Security and Defence Policy
1146	ESE,East South-East
1147	ESH,Western Sahara (ISO 3166 trigram)
1148	ESL,English as a Second Language
1149	ESM,Electronic warfare Support Measures
1150	ESO,European Southern Observatory
1151	ESOL,English for Speakers of Other Languages
1152	ESP,Electronic Stability Program,Extra-sensory perception,Spain (ISO 3166 trigram)
1153	ESPGHAN,European Society for Paediatric Gastroenterology,Hepatology and Nutrition
1154	ESPN,Entertainment and Sports Programming Network
1155	EST,Eastern Standard Time (UTC−5 hours),Estonia (ISO 3166 trigram)
1156	ESU,Emergency Services Unit
1157	ESV,Engineer Support Vehicle
1158	ET,Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1159	ETF,Emergency Task Force (a special police unit,also jocularly said to stand for Extra-Thick Fuzz)
1160	ETH,Ethiopia (ISO 3166 trigram)
1161	ETI,Extra-Terrestrial Intelligence
1162	ETLA,Extended TLA
1163	ETM,Electronic Technical Manual,Enhanced Thematic Mapper
1164	ETT,Embedded Training Team
1165	EU,Europa Island (FIPS 10-4 country code),European Union
1166	Eu,Europium
1167	EUCOM,(U.S.) European Command
1168	EUUSA,European Union and United States of America
1169	EV,Exavolt
1170	EVA,Earned Value Analysis,Economic value added,Ethylene-Vinyl Acetate,Extra-Vehicular Activity
1171	EVIL,Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1172	EW,Electronic Warfare,Exawatt
1173	EWTN,Eternal Word Television Network
1174	Exatesla,Extra Terrestrial
1175	EXREP,Expeditious Repair (SM&R code)
1176	EZ,Czech Republic (FIPS 10-4 country code),Extraction Zone
1177	F,Farad,Fluorine
1178	f,Femto
1179	fA,Femtoampere
1180	FA,Field Artillery,Financial Aid,Football Association (England)
1181	FA,Food Addicts in Recovery Anonymous
1182	FAAD,Forward Area Air Defence
1183	FAADEZ,Forward Area Air Defence Engagement Zone
1184	FAAFP,Fellow of the American Academy of Family Physicians
1185	FAAN,Fellow of the American Academy of Neurology
1186	FAAN,Fellow of the American Academy of Nursing
1187	FAAQ,Frequently Asked and Anticipated Questions
1188	FAASV,Field Artillery Ammunition Supply Vehicle
1189	FAB,Feline Advisory Bureau (UK feline charity)
1190	FAC,Forward Air Controller,Front of Allies for Change,Frontal Affinity Chromatography,Full Aperture Calibrator
1191	FACA,(US) Federal Advisory Committee Act
1192	FACH,Fuerza Aérea de Chile
1193	FACN,Fellow of the American College of Nutrition
1194	FACP,Fellow of the American College of Physicians
1195	FACS,Fellow of the American College of Surgeons,Formal Aspects of Computing Science,Fluorescent-activated cell sorting
1196	FACTS,Flexible Alternating Current Transmission System
1197	FAD,Flavin Adenine Dinucleotide,Fuck A Duck,Funding Authorization Document
1198	FAH,Federation of American Hospitals,Fine Arts and Humanities,Foreign Affairs Handbook
1199	FAM,Foreign Affairs Manual
1200	FAO,Food and Agriculture Organization
1201	FAPA,Fellow of the American Psychological Association
1202	FAPHA,Fellow of the American Public Health Association
1203	FARP,Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1204	FAS,Federation of American Scientists,Fetal Alcohol Syndrome
1205	FASCAM,Family of Scatterable Mines[1]
1206	FASD,Fetal Alcohol Spectrum Disorder
1207	FASEB,Federation of American Societies for Experimental Biology
1208	FAT,Field Artillery Tractor
1209	FAVS,Future Armoured Vehicle System
1210	FAW,Football Association of Wales
1211	FB,Facebook,An on-line social network
1212	FBCS,Fellow of the British Computer Society
1213	FBIDST,Fellow of the British Institute of Dental and Surgical Technologists
1214	FBIS,Foreign Broadcast Information Service
1215	FBM,Board foot
1216	FBR,Fast Breeder Reactor,Foundation for Biomedical Research,Friedman,Billings,Ramsey (now known as Arlington Asset Investment)
1217	FBS-Federal Bureau of Statistics (Pakistan),Fetal bovine serum,Football Bowl Subdivision (U.S. college football),Fukuoka Broadcasting Corporation,FC[edit]
1218	fC,Femtocoulomb
1219	FC,Fire Control,Football Club,Funnel Cloud (METAR Code)
1220	FCC,U.S. Federal Communications Commission
1221	FCE,First Certificate in English
1222	FCF,Financial Free Cash Flow
1223	FCLA,Fraud Claims Law Associate
1224	FCM,Federation of Canadian Municipalities,Fogarty's Cove Music
1225	FCO,UK Foreign and Commonwealth Office
1226	FCW,Florida Championship Wrestling
1227	FD,Falun Dafa
1228	FDA,Food and Drug Administration (U.S.)
1229	FDBK,(I) Feedback
1230	FDC,Federal Detention Center (U.S.),Fire Direction Centre
1231	FDR,Flight Data Recorder,Franklin Delano Roosevelt
1232	FE,Fully Exposed (armoured vehicle target,as opposed to Hull-Down)
1233	Fe,Iron (Latin Ferrum)
1234	FEAR,First Encounter Assault Recon,False Evidence Appears Real
1235	FEAST,Forum for European-Australian Science and Technology Cooperation
1236	FEATS,Festival of European Anglophone Theatrical Societies link title
1237	FEBA,Forward Edge of the Battle Area
1238	FED,Field Emission Display
1239	FEDEP,Federation Development Process (Simulation)
1240	FEF,Frontal Eye Field (neurophysiology)
1241	FENS,Federation of European Neuroscience Societies
1242	FEP,Firepower Enhancement Program,Fleet satellite (FLTSAT) Extremely high frequency (EHF) Package
1243	FES,Flywheel Energy Storage
1244	FEST,Frankfurt English Speaking Theatre link title
1245	FET,Field-effect transistor
1246	FEZ,Fighter Engagement Zone
1247	fF,Femtofarad
1248	FF,Final Fantasy
1249	FFA,Football Federation Australia,Pacific Islands Forum Fisheries Agency,Free-Fire Area,Fusiform Face Area,Future Farmers of America (today the National FFA Organization)
1250	FFB,Frum From Birth (referring to an observant Jew born into a religiously observant family)
1251	FFC,Free For Chat
1252	FFE,Fukuoka Futures Exchange
1253	FFG,Guided Missile Frigate (hull classification symbol)
1254	FFOV,Forward Field Of View
1255	FFS,For Fuck's Sake
1256	FFT,Final Fantasy Tactics,FG[edit]
1257	FG,Falun Gong
1258	fg,Femtogram
1259	FG,Fog (METAR Code),French Guiana (FIPS 10-4 territory code)
1260	FGR,Flickr Group Roulette
1261	fH,Femtohenry
1262	FHFIF,Foster's Home for Imaginary Friends
1263	FHI,Family Health International,Fuji Heavy Industries,Ltd.
1264	FI,Finland (ISO 3166 digram; FIPS 10-4 country code)
1265	FIB,Fucking Illinois Bastard (Wisconsin slang,variants exist)
1266	FIBUA,Fighting In Built-Up Areas
1267	FIC,Fellowship for Intentional Community
1268	FID,Foreign Internal Defence
1269	FIE,Fly-In Echelon
1270	FIFO,First In,First Out
1271	FIFRA,Federal Insecticide,Fungicide,and Rodenticide Act
1272	FIGJAM,Fuck I'm Good,Just Ask Me
1273	FIMPT,Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1274	FIN,Finland (ISO 3166 trigram)
1275	FIRES,Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1276	FISH,Fluorescence In-Situ Hybridisation
1277	FiST,Fire Support Team
1278	FITS,Flexible Image Transport System
1279	FIU,Florida International University
1280	fJ,Femtojoule
1281	FJ,Fiji (ISO 3166 digram; FIPS 10-4 country code)
1282	FJI,Fiji (ISO 3166 trigram)
1283	FJN,Financial Job Network
1284	FK,Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1285	fK,Femtokelvin
1286	FKSM,Fort Knox Supplemental Manual
1287	FKT,Fastest Known Time
1288	fL,Femtolitre
1289	FL,Florida (postal symbol)
1290	FLA,Florida,Front Line Assembly,Future Large Aircraft
1291	FLAB,Four-letter abbreviation
1292	FLAC,Free Legal Advice Centres
1293	FLAC,Free Lossless Audio Codec
1294	FLB,Forward Logistics Base
1295	FLET,Forward Line of Enemy Troops
1296	FLG,Falun Gong
1297	FLIP,Flight Information Publication
1298	FLIR,Forward Looking InfraRed (sensor)
1299	FLK,Falkland Islands (ISO 3166 trigram)
1300	FLOT,Forward Line of Own Troops
1301	FLQ,Free Legal Questions
1302	FLSA,Fair Labor Standards Act
1303	FLTSAT,Fleet Satellite
1304	FLTSATCOM,Fleet Satellite Communication System
1305	FLUBOS,Fat,Lazy,Useless,Bag Of Shit
1306	FM,Factory Mutual http://fmglobal.com
1307	FM,Federal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code),Field Manual,Flight Manager,Frequency Modulation (electronics)
1308	fm,Femtometre
1309	Fm,Fermium
1310	FMC,Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1311	FMCA,Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1312	FMCAfam,Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1313	FMCG,(Fast Moving Consumer Goods)
1314	FME,Formal Methods Europe
1315	FMECA,Failure Modes and Effect Criticality Analysis
1316	FMJD,Fédération Mondiale du Jeu de Dames[2]
1317	FMLA,Family Medical Leave Act
1318	fMRI,Functional Magnetic Resonance Imaging
1319	FMSF,False Memory Syndrome Foundation
1320	FMTV,Family of Medium Tactical Vehicles
1321	fN,Femtonewton
1322	FNA,Functional Needs Analysis
1323	FOAD,Fuck Off And Die
1324	FOAF,Friend Of A friend
1325	FOB,Forward Operating Base
1326	FoB,Free On Board (shipping)
1327	FOC,Full Operational Capability,First of Class
1328	FoE,Friends of the Earth
1329	FOGC,Federal Oil and Gas Council
1330	FOH,Front Of House
1331	FOIA,Freedom of Information Act
1332	FOM,Federation Object Model
1333	FONSI,Finding of No Significant Impact
1334	FOO,Forward Observation Officer
1335	FOOP,Friends Of Organ Pipes (Volunteer group)
1336	FOR,Field Of Regard,Frame Of Reference
1337	FoS,Family of Systems
1338	FOS,Florida Ornithological Society,Full Operational Status
1339	FOSE,Fallout 3 Script Extender
1340	FOSE,Federal Office Systems Expo
1341	FOT,Free on truck
1342	FOTA,Fellow of the Orthodontic Technicians Association
1343	FOTC,Flight of the Conchords
1344	FOUO,For Official Use Only
1345	FP,French Polynesia (FIPS 10-4 territory code)
1346	FPS,Fire Prevention System
1347	FQ,Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1348	FR,France (FIPS 10-4 country code; ISO 3166 digram)
1349	Fr,Francium
1350	FRA,Federal Railroad Administration,France (ISO 3166 trigram)
1351	FRAND,Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1352	FRCP,Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1353	FRICBM,Full Range ICBM
1354	FRO,Faroe Islands (ISO 3166 trigram)
1355	FRS,Fellow of the Royal Society,U.S. Federal Reserve System
1356	FRSA,Fellow of the Royal Society of Art
1357	FRY,Federal Republic of Yugoslavia
1358	fs,Femtosecond
1359	fS,Femtosiemens
1360	FSA,Fire Support Area,UK Food Standards Agency,Functional Solution Analysis
1361	FSC,Federal Supply Classification,Forest Stewardship Council (ecological pressure group
1362	FSCL,Fire Support Co-ordination Line
1363	FSE,Fire Support Element
1364	FSF,Free Software Foundation
1365	FSH,Follicle Stimulating Hormone
1366	FSI,Fuel Stratified Injection
1367	FSM,Federated States of Micronesia (ISO 3166 trigram),Flying Spaghetti Monster (satirical religion)
1368	FSO,Fire Support Officer,Flotilla Staff Officer,Foreign Service Officer
1369	FSS,Fire Support Station
1370	FSSP,Families of Structurally Similar Proteins
1371	FST,Finance Support Team,Finlands Svenska Television (Finland's Swedish-language television),Future Soviet Tank (Cold War era)
1372	FSTC,Foreign Science Technology Center (now NGIC)
1373	fT,Femtotesla
1374	FTC,Federal Trade Commission
1375	FTE,Full Time Equivalent
1376	FTL,Faster Than Light
1377	FTS,Flight Termination System used during some rocket launches
1378	FTS,Fuck That Shit
1379	FTW,For The Win (a commonly used phrase used online to indicate success) F@#K The World,Forever Together Where ever (gang slogan)
1380	FU,Smoke (METAR Code)
1381	FUBAR,Fucked/Fouled Up Beyond All Recognition/Repair
1382	FUCK,For,Unlawful,Carnal,Knowledge (Van Halen album title)
1383	FUD,Fear,Uncertainty & Doubt (marketing strategy)
1384	fV,Femtovolt
1385	fW,Femtowatt
1386	FW,Forward
1387	FWC,Football World Cup
1388	FWF,Fixed Word Format
1389	FWI,French West Indies
1390	FWIW,For What It's Worth
1391	FWS,U.S. Fish and Wildlife Service
1392	FWT,Fresh Water Tank
1393	FX,Firefox,Fox Extended,Metropolitan France (ISO 3166 digram; obsolete 1997),Special effect
1394	FXX,Metropolitan France (ISO 3166 trigram; obsolete 1997)
1395	FY,Fiscal Year,Former Yugoslav Republic of Macedonia (NATO country code)
1396	FYA,For Your Agenda
1397	FYDP,Five-Year Defense Plan (U.S.)
1398	FYI,For Your Information
1399	FYROM,Former Yugoslav Republic of Macedonia
1400	FZDZ,Freezing Drizzle (METAR Code)
1401	FZFG,Freezing Fog (METAR Code)
1402	FZRA,Freezing Rain (METAR Code)
1403	G,Gauss,General Audiences (movie rating)
1404	g,Gram
1405	G1,Assistant Chief-of-Staff,Personnel
1406	G10,Group of 10 (G7 + Belgium,Netherlands,Sweden,Switzerland; numbering 11 in fact)
1407	G15,Group of 15 (subset of G77,formed 1989: Algeria,Argentina,Brazil,Chile,Egypt,India,Indonesia,Jamaica,Kenya,Nigeria,Malaysia,Mexico,Peru,Senegal,Sri Lanka,Venezuela and Zimbabwe; currently numbers 17)
1408	G2,Assistant Chief-of-Staff,Intelligence
1409	G20,Group of 20 (G8 + Argentina,Australia,Brazil,China,India,Indonesia,Mexico,Saudi Arabia,South Africa,South Korea,Turkey + current European Union presiding country) (1999)
1410	G24,Group of 24 (subset of G77,formed 1971: Algeria,Argentina,Brazil,Colombia,Côte d'Ivoire,Democratic Republic of the Congo,Egypt,Ethiopia,Gabon,Ghana,Guatemala,India,Iran,Lebanon,Mexico,Nigeria,Pakistan,Peru,Philippines,South Africa,Syria,Sri Lanka,Trinidad and Tobago and Venezuela)
1411	G3,Heckler & Koch G3
1412	G4,Generation Four PowerPC microprocessor,Assistant Chief-of-Staff,Logistics
1413	G5,Generation Five PowerPC microprocessor,Assistant Chief-of-Staff,Public Affairs
1414	G6,Assistant Chief-of-Staff,Information Technology,Group of 6 (France,Germany,United States,Japan,United Kingdom,Italy) (1975)
1415	G7,Assistant Chief-of-Staff,Training,Group of 7 (G6 + Canada) (1976)
1416	G77,Group of 77 (issued from the United Nations Conference on Commerce and Development,1964; currently numbers 133)
1417	G8,Assistant Chief-of-Staff,Finance,Group of 8 (G7 + Russia) (1998)
1418	GA,Gabon (ISO 3166 digram),The Gambia (FIPS 10-4 country code),Gamblers Anonymous,Georgia (postal symbol),Gigaampere,Goa (Indian state code)
1419	Ga,Gallium,Gigaannum
1420	GAAR,General Anti-Avoidance Rule (tax evasion)
1421	GAB,Gabon (ISO 3166 trigram)
1422	GABA,Gamma-AminoButyric Acid
1423	GAD,Generalized Anxiety Disorder
1424	GAF,Garfield and Friends
1425	GALCIT,Guggenheim Aeronautical Laboratory,California Institute of Technology
1426	GAO,U.S. Government Accountability Office
1427	GAW,Global Atmospheric Watch
1428	GB,Gabon (FIPS 10-4 country code),United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10]
1429	GBBC,Great (Global) Backyard Bird Count
1430	GBE,Knight/Dame Grand Cross of the Order of the British Empire
1431	GBH,Great Bash Heel (Japanese professional wrestling stable),Gregory Bonner Hale (British design and advertising agency),Grievous bodily harm
1432	GBR,United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1433	GBU,Glide-Bomb Unit,Global Business Unit
1434	GC,East Germany (NATO country code; obsolete 1990),General classification (cycling),General counsel,George Cross (British civil decoration),Gigacoulomb [Grindr cruise]
1435	GCA,Graduate in Claims Administration
1436	GCD,see entry
1437	GCF,Greatest Common Factor
1438	GCI,Ground-controlled interception
1439	GCN,Gamma-ray burst Coordination Network
1440	GCS,Global Coordinate System
1441	GCSE,General Certificate of Secondary Education (UK)
1442	Gd,Gadolinium
1443	GD,Grenada (ISO 3166 digram)
1444	GDC,Game Developers Conference,General Dental Council
1445	GDL,Game Definition Language
1446	GDP,General Dental Practitioner (UK),Gross Domestic Product
1447	GDR,General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1448	GDR,German Democratic Republic (cf. DDR)
1449	GDW,Game Designers Workshop
1450	GE,General Electric,Genetic Engineering (cf. GM),Georgia (ISO 3166 digram)
1451	Ge,Germanium
1452	GEBCO,General Bathymetric Chart of the Oceans
1453	GEC,Great Engineering Challenge
1454	GED,General Educational Development (high school equivalency credential in the U.S. and Canada)
1455	GEEP,Geophysical Equipment Exploration Platform
1456	GEMA,Gas and Electricity Markets Authority,Georgia Emergency Management Agency,Gesellschaft für musikalische Aufführungs,und mechanische Vervielfältigungsrechte (German performance rights organisation),Global Engine Manufacturing Alliance
1457	GEN,Full General (four stars) in the U.S. Army
1458	GEO,Geostationary Earth Orbit,Georgia (ISO 3166 trigram)
1459	GEQ,Equatorial Guinea (IOC trigram,but not FIFA or ISO 3166)
1460	GER,Germany (IOC and FIFA trigram,but not ISO 3166)
1461	GeV,Gigaelectron-volt
1462	GEV,Ground Effect Vehicle
1463	GF,French Guiana (ISO 3166 digram),Gigafarad
1464	GFCF,Gluten-free,casein-free diet,Gross fixed capital formation
1465	GFCI,Ground Fault Circuit Interruptor (aka GFI)
1466	GFE,Girlfriend experience (used in escort services),Good Faith Estimate,Government Furnished Equipment
1467	GFI,Ground Fault Interruptor (aka GFCI)
1468	GFL,German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1469	GFN,Global Footprint Network
1470	GG,Georgia (FIPS 10-4 country code)
1471	GGK,Good God Karma
1472	GGP,General Game Playing,General Growth Properties (U.S. shopping center owner),GH[edit]
1473	GH,Ghana (ISO 3166 digram; FIPS 10-4 country code),Gigahenry
1474	GHA,Ghana (ISO 3166 trigram)
1475	GHB,gamma-Hydroxybutyric acid
1476	GI,Galvanised Iron,Gastro-Intestinal,General Issue,Gibraltar (ISO 3166 digram; FIPS 10-4 territory code),Government Issue
1477	Gi,Gibi
1478	GIB,Gibraltar (ISO 3166 trigram)
1479	GIG,Global Information Grid
1480	GIN,Guinea (ISO 3166 trigram),Guidelines International Network
1481	GINK,Going Insane Not Knowing,orig. Colorado 2010 M.Kalfas
1482	GINO,Godzilla In Name Only
1483	GJ,Gigajoule,Grenada (FIPS 10-4 country code),Gujarat (Indian state code)
1484	GJD,Geocentric Julian Day
1485	GK,Gigakelvin,Guernsey (FIPS 10-4 territory code)
1486	GL,Gigalitre,Graphics Language,Greenland (ISO 3166 digram; FIPS 10-4 territory code),Grenade Launcher
1487	GLAAD,Gay and Lesbian Alliance Against Defamation
1488	GLAC,General Ledger Accounting Code
1489	GLAST,Gamma-ray Large Area Space Telescope
1490	GLBA,Gramm-Leach-Bliley Act
1491	GLC,Gas-liquid chromatography
1492	GLINT,Gallium-arsenide Laser Illuminator for Night TV,Gated Laser Illuminator for Narrow Television,Gated Laser Intensifier (tape),Gospel Literature International,Graphical Linux Installation Tool
1493	GLP,Guadeloupe (ISO 3166 trigram)
1494	GLV,Gained Life Value
1495	Gm,Gigametre
1496	GMC,U.K. General Medical Council,Gospel Music Channel
1497	GMFSC,Ground Mobile Forces Satellite Communications
1498	GMI,Generic Model Interface,Geometry Model Instance
1499	GMO,Genetically Modified Organism
1500	GMPCS,Global Mobile Personal Communications by Satellite
1501	GMT,Giant Magellan Telescope,Greenwich Mean Time,GN[edit]
1502	GN,Giganewton,Guinea (ISO 3166 digram)
1503	GNAS,Grand National Archery Society
1504	GNB,Guinea-Bissau (ISO 3166 trigram)
1505	GNP,Gross National Product
1506	GNQ,Equatorial Guinea (ISO 3166 trigram)
1507	GnRH,Gonadotropin-Releasing Hormone
1508	GO,Glorioso Islands (FIPS 10-4 territory code)
1509	GOA,General of the Army (United States only)
1510	GOAT,Greatest Of All Time
1511	GOC,General Officer Commanding
1512	GOES,Geostationary Operational Environmental Satellite
1513	GOP,Grand Old Party
1514	GOSC,General Officer Steering Committee
1515	GOSH,Great Ormond Street Hospital
1516	GOSP,Gas/Oil Separation Plant
1517	GOTS,Government off-the-shelf
1518	GPA,Grade Point Average
1519	GPC,Global Path Cache
1520	GPIB,General-Purpose Instrumentation/Interface Bus
1521	GPO,General Post Office
1522	GPPC,Genetics and Public Policy Center
1523	GPR,Ground-Penetrating Radar
1524	GRAIL,Gravity Recovery and Interior Laboratory
1525	GRAS,Generally recognized as safe (FDA list)
1526	GRB,Gamma-Ray Burst
1527	GRC,Greece (ISO 3166 trigram)
1528	GRD,Grenada (ISO 3166 trigram)
1529	GRID,Gay-Related Immune Deficiency (original name of AIDS)
1530	GriT,Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1531	GRL,Greenland (ISO 3166 trigram)
1532	GRP,Graphite-reinforced plastic,see Carbon-fiber-reinforced polymer
1533	GS,General Schedule (US civil service pay scale),General Support,Gigasiemens,South Georgia and the South Sandwich Islands (ISO 3166 digram)
1534	Gs,Gigasecond
1535	GSA,U.S. General Services Administration
1536	GSD,Graphical Situation Display
1537	GSGB,(God send glamour boy 9-10/10)
1538	GSK,GlaxoSmithKline [good sexual karma]
1539	GSN,Game Show Network
1540	GSO,General Services Officer (U.S. Department of State)
1541	GSOH,Good Sense Of Humour
1542	GSP,Georges St-Pierre (Canadian MMA fighter)
1543	GSR,Gun Shot Residue
1544	GSS,Generic Security Services
1545	GST,Goods and Services Tax (Australia,Canada,and other countries)
1546	GSW,Gunshot wound
1547	GT,Gigatesla,Gran Turismo,Grand Touring,Guatemala (FIPS 10-4 country code; ISO 3166 digram)
1548	GTB,Get to bed,namely to get a new job after a long time of searching,usually following a phone call
1549	GTC,Gran Telescopio Canarias (Spanish,Canaries Great Telescope)
1550	GTD,Getting Things Done
1551	GTG,Got To Go (Internet chat)
1552	GTGN,Getty Thesaurus of Geographic Names
1553	GTK,Good To Know (Internet chat)
1554	GTM,Guatemala (ISO 3166 trigram)
1555	GU,Guam (postal symbol; ISO 3166 digram)
1556	GUA,Guatemala (IOC and FIFA trigram,but not ISO 3166)
1557	GUF,French Guiana (ISO 3166 trigram)
1558	GUILT,Gangliated Utrophin Immuno Latency Toxin
1559	GULCR,Grupo de Usuarios de Linux de Costa Rica
1560	GUT,Grand Unification Theory
1561	GV,Gigavolt,Guinea (FIPS 10-4 country code)
1562	GW,Games Workshop,Germ Warfare,Gigawatt,Guided Weapon,Guinea-Bissau (ISO 3166 digram)
1563	GWARS,Ground Warfare System (simulation)
1564	GWAS,Grand Western Archery Society
1565	GWOT,Global War on Terrorism
1566	GWS,Gulf War Syndrome,Greater Western Sydney
1567	GXE,Gene-enivronment interaction
1568	GXM,Matrox Graphics eXpansion Module
1569	GxP,Good X Practice (X can mean: clinical,manufacturing,pharmaceutical,etc.)
1570	GXP,Grid Exit Point,Global Xchange Programme,Indication of highest performance level on some Pontiac vehicles
1571	GY,Guyana (FIPS 10-4 country code; ISO 3166 digram)
1572	GZ,Gaza Strip (FIPS 10-4 territory code),Ground Zero
1573	GZK,Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1574	h,Hecto
1575	H,Henry,Hydrogen
1576	HA,Haiti (FIPS 10-4 country code),High Availability
1577	HAARP,High Frequency Active Auroral Research Program
1578	HAART,Highly Active Anti-Retroviral Therapy
1579	HAI,Human Awareness Institute
1580	HAL,Hardware Abstraction Layer
1581	HALO,High Altitude Low Opening (parachute jump)
1582	HALT,Highly Accelerated Life Test,Hungry Angry Lonely Tired
1583	HAM,Amateur radio operator
1584	HANS,Head And Neck Support (device used in many race cars)
1585	HARM,High-speed Anti-Radiation Missile
1586	HAT,Highest Astronomical Tide (nautical charts),Hungarian Automated Telescope
1587	HAW,Heavy Antitank Weapon
1588	HAWK,Homing All the Way Killer (air defence system)
1589	HAZ,Heat-Affected Zone
1590	HAZMAT,Hazardous Materials
1591	HBCD,HexaBromoCycloDodecane
1592	HBO,Home Box Office
1593	HBR,Harvard Business Review
1594	HBT,Heterojunction Bipolar Transistor
1595	HBV,Hepatitis B Virus
1596	HCCI,Homogeneous Charge Compression Ignition
1597	HCF,Highest Common Factor
1598	HCSC,Higher Command and Staff Course
1599	HCT,Higher Colleges of Technology,tertiary education institution in the United Arab Emirates (UAE)
1600	HD,Henry Draper (star catalogue),Hull-Down (armoured vehicle target,as opposed to Fully Exposed),High Definition,Huntington's Disease
1601	HDL,High-Density Lipoprotein
1602	HDM,Human Decision-Making
1603	HDR,Henningson,Durham & Richardson (founders of the engineering and construction firm now known by their initials),High dynamic range,a term used in both digital imaging and 3D rendering,Hot Dry Rock (experimental geothermal technology),Human Development Report (UN publication)
1604	HDRA,Henry Doubleday Research Association
1605	He,Helium
1606	HE,High Explosive
1607	HEAT,High Explosive Anti-Tank (ammunition)
1608	HEBA,Hellenic Basketball Clubs Association
1609	HEER,High-Explosive Extended Range (ammunition)
1610	HEIC,Honourable East India Company
1611	HEMP,High-Altitude Electromagnetic Pulse
1612	HEO,High Earth Orbit,Highly Elliptical Orbit
1613	HEOSS,High Earth Orbit Space Surveillance
1614	HEP,High-Explosive Plastic (ammunition)
1615	HEPA,High-Efficiency Particulate Air (filter)
1616	HESH,High-Explosive,Squash-Head (ammunition)
1617	HESV,Heavy Engineering Support Vehicle
1618	HETT,Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1619	HEU,Highly Enriched Uranium
1620	Hewitts,Hills in England,Wales and Ireland over Two Thousand feet (with topographic prominence of at least 30 m)
1621	Hf,Hafnium
1622	HF,High Frequency
1623	HFE,Human Fertilisation and Embryology (UK Act)
1624	HFE,The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1625	HFEA,Human Fertilisation and Embryology Authority (UK)
1626	Hg,Mercury (Latin Hydrargyrum)
1627	HGC,UK Human Genetics Commission
1628	HGF,Human Growth Factor
1629	HGTV,Home & Garden Television
1630	HHB,Ha Ha Bonk,The noise made when you laugh your head off. Used instead of LOL...
1631	HI,Hawaii (postal symbol)
1632	HIH,His (or Her) Imperial Highness
1633	HIM,His (or Her) Imperial Majesty
1634	HIMAD,High to Medium Altitude Air Defence (see also H/MAD)
1635	HIMEZ,High Altitude Missile Engagement Zone
1636	HIMYM,How I Met Your Mother
1637	HIPAA,U.S. Health Insurance Portability and Accountability Act
1638	Hipparcos,HIgh Precision Parallax COllecting Satellite
1639	Hird,Hurd of interfaces representing depth (cf. HURD)
1640	HiRISE,High Resolution Imaging Science Experiment
1641	HIT,Health Information Technology
1642	HIV,Human Immunodeficiency Virus
1643	HIWT,Hobart Institute of Welding Technology
1644	HJD,Heliocentric Julian Day
1645	HK,Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1646	HKG,Hong Kong (ISO 3166 trigram)
1647	HKS,HyperKinetic Syndrome
1648	hL,Hectolitre
1649	HL,Holding Line
1650	HLA,High Level Architecture (simulation),Human Leukocyte Antigen
1651	HLL,High-Level Language
1652	HLN,Headline News
1653	HLOS,High Level Output Specification
1654	HLVW,Heavy Logistics Vehicle,Wheeled
1655	HM,Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1656	HMCE,Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1657	HMCS,Her/His Majesty's Canadian Ship,Her Majesty's Courts Service (former UK agency; succeeded by Her Majesty's Courts and Tribunals Service)
1658	HMD,Heard and McDonald Islands (ISO 3166 trigram)
1659	HMF,HydroxyMethyl Furfural
1660	HMO,Health maintenance organization
1661	HMP,Her Majesty's Prison
1662	HMRC,Her/His Majesty's Revenue and Customs
1663	HMS,Helmet-mounted display,Her/His Majesty's Ship (Royal Navy)
1664	HMSO,Her Majesty's Stationery Office
1665	HMV,His Master's Voice
1666	HN,Honduras (ISO 3166 digram)
1667	HND,Honduras (ISO 3166 trigram)
1668	Ho,Holmium
1669	HO,Honduras (FIPS 10-4 country code)
1670	HOLLAND,Hope Our Love Lasts And Never Dies
1671	HOMES,the Great Lakes; Huron,Ontario,Michigan,Erie,Superior
1672	HONY,Humans of New York,a photoblog.
1673	HOPI,Hybrid Optical and Packet Infrastructure (see Internet2,Abilene Network)
1674	HoReCa,Hotel,Restaurant and Catering
1675	HORIZON,Hélicoptère d'observation radar et d'investigation sur zone (French,Zone Investigation and Radar Observation Helicopter)
1676	HOSTAC,Helicopter Operations from Ships Other Than Aircraft Carriers
1677	HOT,Highly Optimised Tolerance
1678	HOTAS,Hands on throttle-and-stick
1679	HOV,High Occupancy Vehicle
1680	HP,Hewlett-Packard,Hindustan Petroleum,Himachal Pradesh (Indian state code)
1681	hp,horse power
1682	HPA,UK Health Protection Agency
1683	HPCL,Hindustan Petroleum Corporation Limited
1684	HPLC,High Performance Liquid Chromatography
1685	HPT,High[er] Payoff Target
1686	HPV,Human Papilloma Virus
1687	HQ,HeadQuarters,Howland Island (FIPS 10-4 territory code)
1688	HQDA,HeadQuarters,Department of the Army
1689	HR,Croatia (FIPS 10-4 country code; ISO 3166 digram,from the country's native name of Hrvatska),Haryana (Indian state code),Harvard Revised star catalogue,Human Resources
1690	HRBL,High-level Representation of Behavior Language (original name of the Herbal language)
1691	HRD,Human Resource Development
1692	HRED,(U.S. Army Research Laboratory's) Human Research and Engineering Directorate (Aberdeen Proving Ground,Maryland)
1693	HRF,High iness Forces
1694	HRH,His (or Her) Royal Highness
1695	HRM,His (or Her) Royal Majesty
1696	HRM,Human Resource Management
1697	HRT,Hormone Replacement Therapy
1698	HRV,Croatia (ISO 3166 trigram),High Resolution Visible,HS[edit]
1699	Hs,Hassium
1700	HSBC,The Hong Kong and Shanghai Banking Corporation
1701	HSC,Higher School Certificate
1702	HSM,High School Musical
1703	HSMAD,Human Science/Modeling and Analysis Data
1704	HSN,Home Shopping Network
1705	HSPH,Harvard School of Public Health
1706	HSS,Health Service Support,High-Speed Steel
1707	HSSI,High-Speed Serial Interface
1708	HST,see entry
1709	HSV,Herpes Simplex Virus,Hue Saturation Value (colour model),HT[edit]
1710	HTA,HyperText Application
1711	HTC-High Tech Computer Corporation,original name of the company now known simply as HTC,Horry Telephone Cooperative
1712	HTFU,Harden The Fuck Up
1713	HTH,Hope That Helps
1714	HTI,Haiti (ISO 3166 trigram)
1715	HTML,HyperText Markup Language
1716	HTR,Heated Towel Rail
1717	HTS,High-Temperature Superconducting wire
1718	HTTP,HyperText Transfer Protocol
1719	HU,Hungary (ISO 3166 digram; FIPS 10-4 country code)
1720	HUD,Head-Up Display,Housing and Urban Development
1721	HUHA,Head up his/her ass (Marine salute; probably a backcronym)
1722	HUN,Hungary (ISO 3166 trigram)
1723	HURD,Hird of Unix-Replacing Daemons (cf. Hird)
1724	HV,Upper Volta (ISO 3166 digram; obsolete 1984)
1725	HVAC,Heating,ventilation and air conditioning Used in architecture,business and marketing; refers to a building's entire system of heating,moving,or cooling air.
1726	HVAP,High Velocity Armour Piercing (ammunition)
1727	HVHF,High velocity human factors
1728	HVM,High Velocity Missile
1729	HVO,Upper Volta (ISO 3166 trigram; obsolete 1984)
1730	HVP,HarborView Properties,High vacuum process,Hydrolyzed vegetable protein,Human Variome Project,High Velocity Protection,H.V.P. (rapper),High Voltage Protection,High Vapor Pressure,Hub Voice Processor,High-Velocity Projectile,High-Video Pass,High-Velocity Particle
1731	HW,Hardware,High Water (nautical charts)
1732	HWM,Hardware morphing (computer graphics rendering)
1733	HX,IATA code of Hong Kong Airlines,Medical history,Hydrogen halide,Concept automobile by HUMMER
1734	HXB,The glycoprotein Tenascian C
1735	HYS,Harvard,Yale,Stanford (perennially named as the top three law schools in the U.S.)
1736	HZ,Haze (METAR Code)
1737	Hz,Hertz
1738	I,Iodine,One (in Roman numerals)
1739	IA,Iowa (postal symbol)
1740	IAAL,I Am A Lawyer
1741	IAB,International Association for Biologicals
1742	IACREOT,International Association of Clerks,Recorders,Election Officials,and Treasurers
1743	IAD,Ion Assisted Deposition
1744	IADS,Integrated Air Defence System
1745	IAEA,International Atomic Energy Agency
1746	IAF,{i} Industrial Areas Foundation
1747	IAFG,Information Assurance Focus Group
1748	IAI,International African Institute,Israel Aircraft Industries
1749	IANA,Internet Assigned Numbers Authority
1750	IANAL,I Am Not A Lawyer
1751	IAQ,Indoor air quality,Infrequently Asked Questions
1752	IAS,Image Assessment System
1753	IASIP,It's Always Sunny in Philadelphia
1754	IATA,International Air Transport Association
1755	IATF,International Automotive Task Force
1756	IATSE,International Alliance of Theatrical Stage Employees
1757	IAU,International Association of Universities,International Astronomical Union
1758	IAUC,International Astronomical Union Circular
1759	IAW,In Accordance With
1760	IB,International Baccalaureate
1761	IBA,Important Bird Area
1762	IBD,Inflammatory Bowel Disease
1763	IBDM,Information Based Decision Making
1764	IBDS,Integrated Biological Detection System,International Business Development Specialist
1765	IBM,International Business Machines
1766	IBRD,International Bank for Reconstruction and Development (part of the World Bank)
1767	IBS,Irritable Bowel Syndrome
1768	IC,Ice Crystals (METAR Code),Iceland (FIPS 10-4 country code),Integrated Circuit,[inner circle]
1769	ICANN,Internet Corporation for Assigned Names and Numbers
1770	ICAO,International Civil Aviation Organization
1771	ICBM,Intercontinental Ballistic Missile
1772	ICBN,International Code of Botanical Nomenclature
1773	ICC,Integrated Command and Control,International Criminal Court,International Cricket Council,Interstate Commerce Commission,International Chamber of Commerce
1774	ICD,Implantable Cardioverter-Defibrillator,Initial Capabilities Document,International Classification of Diseases
1775	ICE,In case of emergency
1776	ICES,International Council for the Exploration of the Sea
1777	ICF,Intelligent Community Forum
1778	ICM,Improved Conventional Munition,Integrated Collection Management,International Congress of Mathematicians,Iraq Campaign Medal
1779	ICMP,Internet Control Message Protocol
1780	ICNAF,International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1781	ICNI,Integrated Communication,Navigation,and Identification
1782	ICO,Intermediate Circular Orbit
1783	ICP,Inductively coupled plasma,Insane Clown Posse
1784	ICRAF,International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1785	ICRISAT,International Crops Research Institute for the Semi-Arid Tropics
1786	ICRL,Individual Component Repair List
1787	ICRS,International Celestial Reference System
1788	ICS,In-Country Support,Intelligence and Communications Systems,Interim Contractor Support
1789	ICSI,Intracytoplasmic Sperm Injection
1790	ICT,Information and communication technologies
1791	ICTH,Island Closest to Heaven/Hell Final Fantasy VIII
1792	ICV,Infantry Carrier Vehicle
1793	ICW,In Co-ordination With,Indonesia Corruption Watch,Infectious and Chemotherapeutic Waste,Insulating Concrete Wall,Integral Crystalline Waterproofing,Interactive Courseware
1794	ICYMI,In Case You Missed It
1795	ICZN,International Code of Zoological Nomenclature,International Commission on Zoological Nomenclature
1796	ID,Idaho (postal symbol),Identity,Indonesia (FIPS 10-4 country code; ISO 3166 digram),Infantry Division,Intelligent Design,ID10T Error,Idiot User Error (IT help desk inside joke)
1797	IDA,U.S. Institute for Defense Analyses,International Development Association (part of the World Bank
1798	IDC,International Data Corporation
1799	IDDI,I don't do initialisms (see irony)
1800	IDE,Integrated Development Environment,Integrated Drive Electronics
1801	IDeA,Improvement and Development Agency,the former name of Local Government Improvement and Development in the United Kingdom
1802	IDEA,Individuals with Disabilities Education Act (U.S.),International Data Encryption Algorithm,International Design Excellence Awards
1803	IDF,Israel Defense Forces,Intel Development Forum,International Dairy Federation
1804	IDGAF,I don't give a fuck
1805	IDK,I don't know
1806	IDKIBTI,I don't know,I'm black,that's it
1807	IDL,Interface Definition Language
1808	IDN,Indonesia (ISO 3166 trigram)
1809	IE,Indo-European languages,Internet Explorer,Ireland (ISO 3166 digram),Iced Earth
1810	IEA,International Energy Agency
1811	IEC,International Electrotechnical Commission
1812	IED,Improvised Explosive Device
1813	IELTS,International English Language Testing System
1814	IER,Information Exchange Requirement
1815	IET,Initial Entry Training
1816	IET,Institution of Engineering and Technology
1817	IETF,Internet Engineering Task Force
1818	IEW,Intelligence and Electronic Warfare
1819	IFAB,International Football Association Board
1820	IFAH,International Federation for Animal Health
1821	IFAP,International Federation of Agricultural Producers
1822	IFC,International Finance Corporation (part of the World Bank),Independent Film Channel
1823	IFF,Identification,Friend or Foe,Individually Fresh Frozen,International Flavors and Fragrances
1824	IFFN,Identification,Friend,Foe,or Neutral
1825	IFO,Identified Flying Object (see also UFO)
1826	IFOR,UN Implementation Force,Institute for Operations Research,International Fellowship of Reconciliation
1827	IFOV,Instantaneous Field of View
1828	IFPI,International Federation of Phonographic Industries
1829	IFRB,International Frequency Registration Board
1830	IFV,Infantry Fighting Vehicle
1831	IG,Inspector General
1832	IGNOU,Indira Gandhi National Open University
1833	IGS,International Ground Station
1834	IGY,Israeli Gay Youth,International Geophysical Year
1835	IHH,Idiopathic Hypogonadotropic Hypogonadism
1836	IHO,International Hydrographic Organization
1837	IHR,Institute for Historical Review
1838	IHSI,Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1839	II,Two (in Roman numerals)
1840	IICA,Inter-American Institute for Cooperation on Agriculture
1841	IIE,Innovative Interstellar Explorer
1842	III,Three (in Roman numerals)
1843	IIRC,If I Recall/Remember Correctly
1844	IISS,International Institute for Strategic Studies
1845	IIT,Illinois Institute of Technology,Indian Institutes of Technology,Indiana Institute of Technology
1846	IJN,Imperial Japanese Navy (World War II)
1847	IJWP,Interim Joint Warfare Publication
1848	IKEA,Ingvar Kamprad (the company's founder),Elmtaryd (the farm where he was born and raised),Agunnaryd (a village and parish near the farm)
1849	IL,Illinois (postal symbol),Israel (ISO 3166 digram)
1850	ILC,International Law Commission,International Linear Collider
1851	ILDS,Improved Landmine Detection System
1852	ILO,International Labour Organization
1853	ILRI,International Livestock Research Institute
1854	ILY,I Love You [pronounced ILL-LEE]
1855	IM,Isle of Man (FIPS 10-4 territory code),Instant Message (internet speech)
1856	IMA,Intermediate Maintenance Activity,Institute of Mathematics and Applications
1857	IMBD,International Migratory Bird Day
1858	IMDb,Internet Movie Database
1859	IME,In My Experience
1860	IMF,id music file/id's music format (audio file format),Impossible Missions Force,the protagonist organization in the Mission: Impossible media franchise,International Monetary Fund (the most common use for the initialism)
1861	IML,International Mister Leather
1862	IMLAST,International Movement for Leisure Activities in Science and Technology,see MILSET
1863	IMNM,,Immune-mediated necrotizing myopathy a rare,but serious ADR of statins [1]
1864	IMNSHO,In My Not So Humble Opinion
1865	IMPAC,International Merchant Purchase Authorization Card
1866	IMPACT,International Medical Products Anti-Counterfeiting Taskforce
1867	IMPATT,IMPact Avalanche Transit Time diode
1868	IMPT,Institute of Maxillofacial Prosthetists and Technologists
1869	IMRL,Individual Material iness List
1870	IMRO-Internal Macedonian Revolutionary Organization,Irish Music Rights Organisation
1871	IMS,Information Management System,International Meat Secretariat,Ion Mobility Spectrometer
1872	IMSA,Illinois Mathematics and Science Academy,International Mind Sports Association,International Motor Sports Association
1873	IMsL,International Ms. Leather
1874	IMT,Integrated Management Tool
1875	IMU,International Mathematical Union
1876	IN,India (FIPS 10-4 country code; ISO 3166 digram),Indiana (postal symbol),Infantry
1877	In,Indium
1878	INA,Immigration and Nationality Act
1879	INAS,International Near-Earth Asteroid Survey
1880	INCITS,InterNational Committee for Information Technology Standards
1881	IND,India (ISO 3166 trigram)
1882	INDIGO,(U.S.) INtelligence DIvision Gaming Operation
1883	inet,the Internet
1884	INFORMS,(U.S.) Institute for Operations Research and the Management Sciences
1885	INFOSEC,Information Security
1886	INLA,Irish National Liberation Army
1887	INMARSAT,International Maritime Satellite organization
1888	INRI,Iesus Nazarenus Rex Iudæorum (Latin for: Jesus of Nazareth,King of the Jews)
1889	INRIA,Institut national de recherche en informatique et en automatique
1890	INS,Immigration and Naturalization Service
1891	InSAR,Interferometric synthetic aperture radar
1892	INST,Information Standards and Technology
1893	INTERFET,International Force for East Timor
1894	INTSUM,Intelligence Summary
1895	IO,British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1896	IOC,Initial Operational Capability,Intergovernmental Oceanic Commission,International Olympic Committee,International Ornithological Congress
1897	IOLTA,Interest on Lawyer Trust Accounts (charitable funding mechanism,especially for legal aid)
1898	IOM,Iowa,Ohio,Michigan (soybean origin),Institute of Medicine,International Organisation for Migration,Isle of Man
1899	IONA,Islands of the North Atlantic (alternate name for Great Britain,Ireland,the Isle of Man,and related islands)
1900	IOT,British Indian Ocean Territory (ISO 3166 trigram)
1901	IP,Clipperton Island (FIPS 10-4 territory code),Initial Point,Intellectual Property,Internet Protocol
1902	IPA,India Pale Ale,International Phonetic Alphabet,Isopropyl alcohol
1903	IPB,Intelligence Preparation of the Battlefield
1904	IPCC,Intergovernmental Panel on Climate Change,Independent Police Complaints Commission
1905	IPL,Inferior Parietal Lobule
1906	IPO,Initial Public Offering
1907	IPR,In Progress Review,Intellectual Property Rights,Intelligence Production Requirement
1908	IPT,Integrated Product/Project Team
1909	IPTS,Institute for Prospective Technological Studies
1910	IPTV,Internet Protocol TeleVision
1911	IPW,Interrogation of Prisoners of War
1912	IQ,Intelligence Quotient,Iraq (ISO 3166 digram)
1913	Ir,Iridium
1914	IRA,Individual Retirement Account,Irish Republican Army (see also List of organisations known as the Irish Republican Army for groups claiming descent from this organisation)
1915	IRAD,Internal Research and Development
1916	IRAN,(I) Inspect and Repair As Necessary
1917	IRAS,Infrared Astronomical Satellite
1918	IRB,International Rugby Board
1919	IRBM,Intermediate Range Ballistic Missile
1920	IRC,International Red Cross,International Reply Coupon
1921	IREA,Intermountain Rural Electric Association
1922	IRINN,Islamic Republic of Iran News Network
1923	IRN,Iran (ISO 3166 trigram)
1924	IRO,International Refugee Organisation
1925	IRQ,Iraq (ISO 3166 trigram)
1926	IRS,U.S. Internal Revenue Service
1927	IRST,Infra-red Search and Track
1928	IS,Iceland (ISO 3166 digram),Israel (FIPS 10-4 country code)
1929	ISA,Individual Savings Account,Industry Standard Architecture,Instruction Set Architecture,International Seabed Authority
1930	ISAAA,International Service for the Acquisition of Agri-biotech Applications
1931	ISAF,International Sailing Federation,International Security Assistance Force
1932	ISAR,Inverse SAR (Synthetic Aperture Radar)
1933	ISB,Intermediate Staging Base
1934	ISBN,International Standard Book Number (ISO 2108)
1935	ISCCP,International Satellite Cloud Climatology Project
1936	ISCII,Indian Standard Code for Information Interchange
1937	ISDN,Integrated Services Digital Network
1938	ISEF,Intel International Science and Engineering Fair
1939	ISEN,Internet Search Environment Number
1940	ISF,Internal Security Force
1941	ISI-Indian Standards Institute,former name of the Bureau of Indian Standards,Inter-Services Intelligence (Pakistan),Islamic State of Iraq,an umbrella organization for several Iraqi insurgent groups
1942	ISIL,Islamic State of Iraq and the Levant
1943	ISL,Iceland (ISO 3166 trigram)
1944	ISLN,International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1945	ISM,Industrial,scientific or medical,Interstellar medium
1946	ISMB,International Society of Matrix Biologists
1947	ISMC,Intelligent Sounding Meaningless Conversation
1948	ISOGP,Indian Society of Orthodontics for General Practitioners [2]
1949	ISP,International Standardized Profile,Internet Service Provider,Information Systems Professional
1950	ISPE,International Society for Pharmacoepidemiology
1951	ISR,Intelligence,Surveillance and Reconnaissance,Israel (ISO 3166 trigram)
1952	ISRO,Indian Space Research Organisation
1953	ISS,International Shorebird Survey (North America),International Space Station
1954	ISSCR,International Society for Stem Cell Research
1955	ISSN,International standard serial number (ISO 3297)
1956	IST,Information System Technology,UCF Institute for Simulation and Training
1957	ISTAR,Intelligence,Surveillance,Target Acquisition,and Reconnaissance
1958	ISTC,Institute of Scientific and Technical Communications (UK)
1959	ISTS,Intel Science Talent Search
1960	ISU,Integrated Sight Unit,International Skating Union,IT[edit]
1961	IT,InferoTemporal (neurophysiology),Information Technology,Italy (FIPS 10-4 country code; ISO 3166 digram)
1962	ITA,Italy (ISO 3166 trigram)
1963	ITAG,Inertial Terrain-Aided Guidance
1964	ITALY,I'll Truly Always Love You
1965	ITAS,Improved Target Acquisition Sight
1966	ITC,InferoTemporal Cortex (neurophysiology)
1967	ITCZ,Intertropical Convergence Zone
1968	ITEC,Information Technology Exposition & Conference
1969	ITEMS,Interactive Tactical Environment Management System
1970	ITER,International Thermonuclear Experimental Reactor
1971	ITF,International Tennis Federation
1972	ITK,In The Know
1973	ITN,Independent Television News (British)
1974	ITS,Incompatible Time-sharing System,Individual Training Standards
1975	ITT,International Telephone and Telegraph (U.S.)
1976	ITTO,International Tropical Timber Organization
1977	ITU,Intent-to-Use,International Telecommunication Union (International Telegraph Union 1865-1932),IU[edit]
1978	IUCN,International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1979	IUSS,Integrated Undersea Surveillance System,Integrated Unit Simulation System,International Union of Soil Sciences
1980	IV,Côte d'Ivoire (FIPS 10-4 country code; from Ivory Coast),Four (in Roman numerals),IntraVenous (as in intravenous drip or intravenous therapy)
1981	IVD,Internet Video Device,intra vas device
1982	Iveco,Industrial Vehicles Corporation
1983	IVF,In Vitro Fertilisation
1984	IVI,Interchangeable Virtual Instrument
1985	IVIS,Inter-Vehicle Information System
1986	IVL,Inter-Visibility Line
1987	IVM,In Vitro [Oocyte] Maturation
1988	IVO,In Vicinity Of
1989	IW,Information Warfare
1990	IWARS,Infantry Warrior Simulation
1991	IWC,International Whaling Commission
1992	IWW,Industrial Workers of the World
1993	IX,Nine (in Roman numerals)
1994	IXT,IntraText digital library; IntraText lexical hypertext
1995	IY,Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1996	IZ,Iraq (FIPS 10-4 country code)
1997	J,Joule
1998	J1,Joint [Manpower &] Personnel Directorate
1999	J2,Joint Intelligence Directorate
2000	J2EE,Java 2 Platform,Enterprise ion
2001	J2ME,Java 2 Platform,Micro ion
2002	J2SE,Java 2 Platform,Standard ion
2003	J3,Joint Operations Directorate
2004	J4,Joint Logistics Directorate
2005	J5,Joint Strategic Plans & Policy Directorate
2006	J6,Joint Information Technology Directorate (Command,Control,Communications & Computer Systems)
2007	J7,Joint Operational Plans & Interoperability Directorate
2008	J8,Joint Force Structure,Resources,& Assessment Directorate
2009	JA,Japan (FIPS 10-4 country code)
2010	JAFT,Just A Field Test
2011	JAL,Japan Airlines
2012	JALLC,Joint Analysis and Lessons Learned Centre (NATO)
2013	JAM,Jamaica (ISO 3166 trigram)
2014	JAMA,Journal of the American Medical Association
2015	JANET,Joint Academic Network
2016	JANUS,Joint Academic Network Using Satellites (UK),Joint Army Navy Uniform Simulation,Joint Army-Navy Staff,Just ANother Useless Simulation (Note: The U.S. Army Janus simulation is not an acronym)
2017	JATO,Jet-Assisted Take-Off
2018	JB,Jail Bait
2019	JB,Junior Branch
2020	JBFSA,Joint Blue Force Situational Awareness
2021	JCDB,Joint Common Data Base
2022	JCDS,Joint Chiefs of the Defence Staff
2023	JCIDS,Joint Capabilities Integration and Development System
2024	JCL,Job Control Language
2025	JCP,Java Community Process
2026	JCPM,Java Child Process Manager,Jesus Christ Prison Ministry
2027	JCS,Joint Chiefs of Staff
2028	JCW,Juggalo Championship Wrestling
2029	JDBC,Java Data Base Connectivity
2030	JDCC,UK Joint Doctrine and Concepts Centre,now the Development,Concepts,and Doctrine Centre,DCDC
2031	JDEM,Joint Dark Energy Mission
2032	JDL,Jewish Defense League
2033	JDM,Japanese domestic market,referring specifically to automobiles and parts,Java Data Mining,Joint design manufacturing,JE[edit]
2034	JE,Jersey (FIPS 10-4 territory code)
2035	JEB,James Ewell Brown (Stuart),John Ellis Bush
2036	JEDP,Jahwist,Elohist,Deuteronomist,Priestly (according to the documentary hypothesis,the sources of the Torah)
2037	JEE,Java Platform,Enterprise ion
2038	JEFX,Joint Expeditionary Force eXperiment
2039	JEPD,Jahwist,Elohist,Priestly,Deuteronomist,Jointly Exhaustive,Pairwise Disjoint
2040	JET,Joint European Torus
2041	JEZ,Joint Engagement Zone
2042	JFACC,Joint Force Air Component Commander
2043	JFACTSU,U.S. Joint Forward Air Control Training and Standards Unit
2044	JFC,Joint Force Commander
2045	JFK,John Fitzgerald Kennedy or the airport named after him.
2046	JFLCC,Joint Force Land Component Commander
2047	JFMCC,Joint Force Maritime Component Commander
2048	JFO,Journal of Field Ornithology
2049	JFSOCC,Joint Force Special Operations Component Commander
2050	JFTX,Joint Field Training Exercise
2051	JH,Japan Highway Public Corporation
2052	JH,Jharkhand (Indian state code)
2053	JI,Joint Implementation
2054	JIB,Joint Information Bureau
2055	JIC,Joint Intelligence Centre
2056	JINI,Java Intelligent Network Infrastructure
2057	JITC,Joint Interoperability Test Command
2058	JIVE,Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
2059	JJAP,Japanese Journal of Applied Physics
2060	JK,Jedi Knight,Just Kidding,Spanair (IATA airline designator),Jammu & Kashmir (Indian state code)
2061	JL,Japan Airlines (IATA airline designator)
2062	JLA,Justice League of America
2063	JM,Jamaica (FIPS 10-4 country code; ISO 3166 digram)
2064	JMS,Java Message Service
2065	JN,Jan Mayen Island (FIPS 10-4 territory code)
2066	JNI,Java Native Interface
2067	JNLP,Java Network Launch Protocol
2068	JO,Jordan (FIPS 10-4 country code; ISO 3166 digram)
2069	JOA,Joint Operations Area
2070	JOPES,Joint Operations Planning and Execution System
2071	JOR,Jordan (ISO 3166 trigram)
2072	JOTS,Joint Operations Tactical System
2073	JP,Japan (ISO 3166 digram),Justice of the Peace
2074	JPL,Jet Propulsion Laboratory
2075	JPN,Japan (ISO 3166 trigram)
2076	JPOW,Joint Project Optic Windmill
2077	JQ,Jetstar Airways (IATA airline designator),Johnny Quick,Johnston Atoll (FIPS 10-4 territory code),Jonny Quest,Joshua Quagmire
2078	JRA,Japanese Red Army,Joint Rear Area
2079	JRDF,Joint Rapid Deployment Forces
2080	JRE,Java Runtime Environment
2081	JREF,James Randi Educational Foundation
2082	JROC,Joint Requirements Oversight Council
2083	JROCM,JROC Memorandum
2084	JRRF,Joint Rapid Reaction Force
2085	JRSAI,Journal of the Royal Society of Antiquaries of Ireland
2086	JSAP,Japan Society of Applied Physics
2087	JSCSC,Joint Services Command and Staff College
2088	JSEAD,Joint Suppression of Enemy Air Defence (see SEAD)
2089	JSF,Joint Strike Fighter
2090	JSIMS,Joint Simulation System
2091	JSOA,Joint Special Operations Area
2092	JSOTF,Joint Special Operations Task Force
2093	JSP,JavaServer Page
2094	JSP,Joint Services Publication
2095	JSR,Java Specification Request
2096	JSS,Joint Support Ship Project
2097	JT,Johnston Atoll (ISO 3166 digram; obsolete 1986),Junior Technician (RAF)
2098	JTC,Joint Training Confederation
2099	JTF,Joint Task Force
2100	JTFEX,Joint Task Force Exercise
2101	JTLS,Joint Theater Level Simulation
2102	JTMD,Joint Theatre Missile Defence
2103	JTN,Johnston Atoll (ISO 3166 trigram; obsolete 1986)
2104	JU,Juan de Nova Island (FIPS 10-4 territory code)
2105	JUGFET,JUnction Gate Field-Effect Transistor
2106	JUICE,JUpiter ICy Moon Explorer
2107	JUO,Joint Urban Operations
2108	JW,Jehovah's Witnesses
2109	JWARS,Joint Warfare System (simulation)
2110	JWP,Joint Warfare Publication
2111	JY,Japanese Yen
2112	JZ,Joint Zone
2113	k,Kilo-
2114	K,picokelvin
2115	K9,Canine Police Unit
2116	Ka,Kamov Design Bureau
2117	kA,Kiloampere
2118	KAF,Kandahar Air Field
2119	KARNAC,Knowledge Aided Retrieval in Activity Context
2120	KARR,Knight Automated Roving Robot (Knight Rider character)
2121	KATUSA,Korean Augmentation To United States Army
2122	KAZ,Kazakhstan (ISO 3166 trigram)
2123	KBE,Knight Commander of the Order of the British Empire
2124	KBO,Kuiper Belt Object
2125	KBVB,Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2126	kC,Kilocoulomb
2127	KCL,King's College London
2128	KCS,Kansas City Southern Railway (AAR reporting mark)
2129	KEDO,Korean Peninsula Energy Development Organization
2130	KEN,Kenya (ISO 3166 trigram)
2131	KERA,Kentucky Education Reform Act (of 1990)
2132	kerma,Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2133	KESR,Kent and East Sussex Railway.
2134	kF,Kilofarad
2135	KFC,Kentucky Fried Chicken
2136	KFOR,UN Kosovo Force
2137	KFUPM,King Fahd University of Petroleum & Minerals
2138	KG,Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2139	KGO,Knight of the Guelphic Order of Hanover
2140	KGZ,Kyrgyzstan (ISO 3166 trigram)
2141	KH,Cambodia (ISO 3166 digram)
2142	kH,Kilohenry
2143	KHL,Kontinental Hockey League
2144	KHM,Cambodia (ISO 3166 trigram)
2145	KHz,Kilohertz
2146	Ki,Kibi
2147	KI,Kiribati (ISO 3166 digram)
2148	KIA,Killed In Action
2149	KIDS,Knowledge-based Integrated Design System
2150	KIR,Kiribati (ISO 3166 trigram)
2151	KIT,Keep In Touch
2152	KITECH,Korean Institute of Industrial Technology
2153	kJ,Kilojoule
2154	kK,Kilokelvin
2155	KKK,Ku Klux Klan
2156	kL,Kilolitre
2157	KL,Kuala Lumpur,Kerala (Indian state code)
2158	KLENOT,KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2159	KLOC,Kilo Lines Of Code
2160	KMR,Kwajalein Missile Range
2161	kN,Kilonewton
2162	KNA,Saint Kitts and Nevis (ISO 3166 trigram)
2163	KNVB,Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2164	KO,Knocked Out
2165	KOR,Republic of Korea (ISO 3166 trigram)
2166	KP,Kim Possible
2167	KPNO,Kitt Peak National Observatory
2168	Kr,Krypton
2169	kS,Kilosiemens
2170	KSC,Kennedy Space Center
2171	KSI,Killed or Seriously Injured
2172	KSM,Korean Service Medal,Khalid Sheikh Mohammed
2173	KSU,Kansas State University
2174	kT,Kilotesla
2175	KTS,Knight of the Tower and Sword (of Portugal)
2176	KU,Kuwait (FIPS 10-4 country code)
2177	KUL,Katholieke Universiteit Leuven (Flemish,Catholic University of Leuven)
2178	kV,Kilovolt
2179	KV,Kosovo
2180	KVM,Keyboard,Video,Mouse switch
2181	kW,Kilowatt
2182	KW,Kuwait (ISO 3166 digram)
2183	KWB,Kids' WB!
2184	KWT,Kuwait (ISO 3166 trigram)
2185	KX,Cayman Airways (IATA airline designator)
2186	KZ,Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2187	KZN,KwaZulu-Natal
2188	La,Lanthanum
2189	LAB,Logistics Assault Base
2190	LabVIEW,Laboratory Virtual Instrumentation Engineering Workbench
2191	LACMA,Los Angeles County Museum of Art
2192	LAD,Laser Aiming Device
2193	LADW,Local Air Defence Warning
2194	LAESI,Local Authority & Emergency Service Information
2195	LAN,Local Area Network
2196	LANL,Los Alamos National Laboratory
2197	LAO,Laos (ISO 3166 trigram)
2198	LARC,Livermore Advanced Research Computer (cf. LLNL)
2199	LARP,Live-Action Role-Playing
2200	LAS,McCarran International Airport (Las Vegas,Nevada)
2201	Laser,Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2202	LATA,Local Access Transport Area
2203	LATCH,Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2204	LAW,Light Antitank Weapon
2205	LB,Lebanon (ISO 3166 digram)
2206	LBN,Lebanon (ISO 3166 trigram)
2207	LBNL,Lawrence Berkeley National Laboratory
2208	LBR,Liberia (ISO 3166 trigram)
2209	LBS,Location-Based Services
2210	lbs,pounds (plural form of lb,see above)
2211	LBT,Large Binocular Telescope
2212	LBW,Leg Before Wicket
2213	LBY,Libya (ISO 3166 trigram)
2214	LC,Line of Contact,Saint Lucia (ISO 3166 digram)
2215	LCA,Saint Lucia (ISO 3166 trigram)
2216	LCC,Land Component Commander
2217	LCCP,Light Contingency Communications Package
2218	LCD,Liquid Crystal Display
2219	LCE,Leaving Certificate Examination,Load Carrying Equipment,London Commodity Exchange
2220	LCM,Least/Lowest Common Multiple
2221	LCol,Lieutenant-Colonel (Canada,UK)
2222	LCS,League of Legends Championship Series
2223	LD,Laser Designator,Limited Deployment,Line of Departure
2224	LDA,Lateral Drift Apparatus (paratroops)
2225	LDC,Lesser Developing/Developed Country
2226	LDL,Low-Density Lipoprotein
2227	LDV,Local Defence Volunteers (British Home Guard)
2228	LDW,Lane Departure Warning (ADAS)
2229	LE,Lebanon (FIPS 10-4 country code)
2230	LEC,Local Exchange Carrier
2231	LED,Light-Emitting Diode
2232	LEGAD,Legal Advice
2233	Legs,level emotion gad speed
2234	LEMOSS,Long-Endurance MObile Submarine Simulator
2235	LEN,Large Extension Node
2236	LEP,Large Electron-Positron collider
2237	LER,Loss-Exchange Ratio
2238	LEU,Low-Enriched Uranium
2239	LF,Low Frequency
2240	LFO,Low Frequency Oscillation / Oscillator
2241	LFTR,Liquid fluoride thorium reactor
2242	LG,Latvia (FIPS 10-4 country code)
2243	LGB,Lesbian,Gay,Bisexual,Laser-guided bomb,self-explanatory
2244	LGBT,Lesbian,Gay,Bisexual,Transgender
2245	LGLO,Love God,Love Others
2246	LGM,Little Green Men
2247	LGS,Landsat Ground Station
2248	LH,Lithuania (FIPS 10-4 country code),Luteinising Hormone
2249	LHC,Large Hadron Collider
2250	LHS,Left Hand Side
2251	LI,Fifty-one (in Roman numerals),Liberia (FIPS 10-4 country code),Liechtenstein (ISO 3166 digram)
2252	Li,Lithium
2253	LIBOR,London Interbank Offered Rate
2254	LIBS,Laser Induced Breakdown Spectroscopy
2255	LIE,Liechtenstein (ISO 3166 trigram)
2256	LIFO,Last In,First Out
2257	LIGO,Laser Interferometer Gravitational-Wave Observatory
2258	LINEAR,Lincoln Near-Earth Asteroid Research
2259	LISA,Laser Interferometer Space Antenna
2260	LIVE,Liquid Inertial Vibration Eliminator
2261	LJ,La Jolla,Larry Johnson (both the American football and basketball players of that name),LaserJet (HP printer brand),Library Journal,Linux Journal,LiveJournal,Ljubljana,Lord Justice of Appeal,Sierra National Airlines (IATA code)
2262	LJJ,Lord Justices of Appeal
2263	LK,Sri Lanka (ISO 3166 digram)
2264	LKA,Sri Lanka (ISO 3166 trigram)
2265	LKR4,Linkwitz-Riley 4th order (audio crossover type)
2266	LL,Land Line (telephone),Last Log,Late Latin,Left Limit,Lex Luthor (Superman character),Light Line,Limited Liability,Linked List,Little League
2267	LLAD,Low Level Air Defence
2268	LLB,Legum Baccalaureus (Latin: Bachelor of Laws)
2269	LLC,Limited Liability Company
2270	LLGC,Llyfrgell Genedlaethol Cymru (National Library of Wales),London Lesbian and Gay Centre
2271	LLLTV,Low-Light Level Television
2272	LLNL,Lawrence Livermore National Laboratory
2273	LLP,Limited Liability Partnership
2274	LLTI,Limiting Long-Term Illness,Long Lead Time Item
2275	LLTR,Low-Level Transit Route
2276	LMAO,Laughing My Ass Off (Internet shorthand)
2277	LMB,Lick My Balls
2278	LMN,Lifetime Movie Network
2279	LMS,Like My Status (Internet shorthand)
2280	LMS,London Mathematical Society,London,Midland and Scottish (Railway)
2281	LMV,() Light Motor Vehicle
2282	LNER,London and North Eastern Railway
2283	LNG,Liquefied Natural Gas
2284	LNO,Liaison Officer
2285	LO,Slovakia (FIPS 10-4 country code)
2286	LOA,Limit Of Advance
2287	LOD,Limit of Detection,see Detection limit
2288	LoD,Lines of Development (UK)
2289	LOFAR,Low Frequency Analysis and Recording
2290	LOGPAC,Logistics Package
2291	LOL,Laughing Out Loud (Internet shorthand)
2292	LOMEZ,Low Altitude Missile Engagement Zone
2293	LONEOS,Lowell Observatory Near-Earth-Object Search
2294	LOOGY,(p/a) Lefty One-Out GuY,a sometimes pejorative nickname for the left-handed specialist in baseball
2295	LORTID,LOng Range Target IDentification
2296	LOS,Line Of Sight
2297	LOSAT,Line-Of-Sight Anti-Tank (missile)
2298	LOTA,Licentiate of the Orthodontic Technicians Association
2299	LOTIS,Livermore Optical Transient Imaging System
2300	LOTS,Logistics Over-The-Shore
2301	LP,Linkin Park,Linkup Point,Listening Post,Long Playing record,Louisiana Pacific (cf. LP Field)
2302	LPC,Linear Predictive Coding
2303	LPD,Landing Platform Dock (Navy hull classification),Low Probability of Detection
2304	LPG,Liquefied Petroleum Gas (cf. LNG)
2305	LPI,Low Probability of Intercept
2306	LPS,Landsat Processing System,LipoPolySaccharide
2307	LQ,Palmyra Atoll (FIPS 10-4 territory code)
2308	Lr,Lawrencium
2309	LR,Liberia (ISO 3166 digram)
2310	LRC,Logistics iness Center
2311	LRF,Laser rangefinder,Low iness Forces
2312	LRGW,Long-Range Guided Weapon
2313	LRICBM,Limited Range ICBM
2314	LRIP,Low Rate Initial Production
2315	LRP,Logistics Release Point
2316	LRPE,Long-Range Planning Element
2317	LRS,Long Range Surveillance
2318	LRU,Line-Replaceable Unit
2319	LSE,Least Squares Estimate/Error,London School of Economics,London Stock Exchange
2320	LSI,Large-Scale Integration
2321	LSIF,Labour Sponsored Investment Fund
2322	LSND,Liquid Scintillator Neutrino Detector
2323	LSO,Lesotho (ISO 3166 trigram)
2324	LSST,Large Synoptic Survey Telescope
2325	LSVW,Light Support Vehicle,Wheeled
2326	LT,Lesotho (FIPS 10-4 country code),Lithuania (ISO 3166 digram)
2327	Lt,Lieutenant
2328	LtC,Lieutenant-Colonel (U.S.)
2329	LTC,Long-Term Costing
2330	Ltd,Limited
2331	LTDP,Long-Term Defence Plan
2332	LTG,Lieutenant General,Lightning (METAR Code)
2333	LTI,Linear Time-Invariant
2334	LTM,Acronym for Laughing To Myself
2335	LTP,Long-Term Potentiation
2336	LTU,Lithuania (ISO 3166 trigram)
2337	LU,Acronym Love You
2338	LU,Loonatics Unleashed
2339	Lu,Lutetium
2340	LUCA,Last Universal Common Ancestor
2341	LUG,Linux User Group
2342	LULU,Locally Unwanted Land Use (urbanism)
2343	LUT,Limited User Test (ing),Local User Terminal
2344	LUVW,Light Utility Vehicle,Wheeled
2345	LUX,Luxembourg (ISO 3166 trigram)
2346	LV,Las Vegas,Latvia (ISO 3166 digram),Launch Vehicle,Leading Vehicle,Leave,Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria
2347	LVA,Latvia (ISO 3166 trigram)
2348	LVAD,Left Ventricular Assist Device,Low-Velocity Airdrop
2349	LVEF,Left Ventricular Ejection Fraction
2350	LW,Land Warrior,Low Water (nautical charts)
2351	Lw,Lawrencium (obsolete 1963)
2352	LWR,Laser warning receiver
2353	LWRC,Land Warfare Resources Corporation
2354	LWS,Land Warrior System
2355	LX,Electrics (theatrical term)
2356	LX,Luxembourg (amateur radio ITU prefix),Swiss International Air Lines (IATA code)
2357	LY,Libya (FIPS 10-4 country code; ISO 3166 digram),Lithuania (amateur radio ITU prefix)
2358	LYAO,Laugh Your Ass Off
2359	LYLAS,Love You Like A Sister
2360	LZ,Bulgaria (amateur radio ITU prefix),Landing Zone
2361	M,Mega-,One thousand (in Roman numerals)
2362	m,Metre,Milli
2363	MA,Madagascar (FIPS 10-4 country code),Marijuana Anonymous,Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram)
2364	Ma,Megaannum
2365	mA,Milliampere
2366	MAA,Mathematical Association of America
2367	MAAC,Metro Atlantic Athletic Conference
2368	MACE,Multi-Agent Computing Environment
2369	MACHO,MAssive Compact Halo Object
2370	MADD,Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency,Multiply-Add
2371	MAF,Maintenance Action Form
2372	MAFF,Ministry of Agriculture,Forestry and Fisheries (various countries)
2373	MAGIC,Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2374	MAGNETAR,Metaprogrammable AGent NETwork ARchitecture
2375	MAGTF,Marine Air-Ground Task Force
2376	MALD,Miniature Air-Launched Decoy
2377	MANPADS,MAN-Portable Air Defence System
2378	MANPRINT,MANpower and PeRsonnel INTegration
2379	MAOI,Monoamine oxidase inhibitor
2380	MAPS,Monitoring Avian Productivity and Survivorship
2381	MAR,Morocco (ISO 3166 trigram)
2382	MarBEF,Marine Biodiversity and Ecosystem Functioning
2383	MARC,MAchine able Cataloging (often also defined as MAchine able Code),Mailing list ARChive,Massachusetts Animal Rights Coalition,Mid-America Regional Council
2384	MARCENT,United States Marine Forces Central Command
2385	MARFORCC,Marine Force Component Commander
2386	MARRS,Martyn Young,Alex Ayuli,Rudy Tambala,Russell Smith,and Steve Young (British electronic music act)
2387	MASAS,Monte Agliale Supernovae and Asteroid Survey
2388	Maser,Microwave Amplification by Stimulated Emission of Radiation
2389	MASH,Mobile Army Surgical Hospital
2390	MASINT,Measurement And Signature Intelligence
2391	MATREX,Modeling Architecture for Technology,Research & EXperimentation
2392	MAVS,Mobile Artillery Vehicle System
2393	MAW,Malawi (IOC trigram,but not FIFA or ISO 3166)
2394	MB,Manitoba (postal symbol),Martinique (FIPS 10-4 territory code),Medal of Bravery (Canada)
2395	MBA,Main Battle Area,Main Belt Asteroid,Masters of Business Administration
2396	MBBL,(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2397	MBCC,Migratory Bird Conservation Commission (U.S.)
2398	MBCS,Multi-Byte Character Set
2399	MBE,Member of the Order of the British Empire,Multistate Bar Examination (U.S.)
2400	MBI,Moody Bible Institute
2401	MBIDST,Member of the British Institute of Dental and Surgical Technologists
2402	MBM,Meat and Bone Meal
2403	mbsf,metres below sea floor,[1][2] a depth convention used in paleontology and oceanography
2404	MBT,Main Battle Tank
2405	MBTA,Massachusetts Bay Transportation Authority,Migratory Bird Treaty Act (U.S.)
2406	MBTI,Myers-Briggs Type Indicator
2407	mC,Millicoulomb
2408	MCA,Master of Computer Applications,Micro Channel Architecture,MultiChannel Analyzer,Music Corporation of America,the original name of the now-defunct MCA Inc.
2409	MCC,Marylebone Cricket Club,Mission Control Center,Motor Control Center,Movement Control Centre
2410	MCD,Minimal Cerebral Dysfunction,Minor civil division (U.S. Census term)
2411	MCDL,Model Composition Definition Language
2412	MCFT,Modified Compression Field Theory
2413	MCG,Melbourne Cricket Ground
2414	MCI,Microwave Communications,Inc.
2415	MCIS,Mellon Collie and the Infinite Sadness
2416	MCM,Mine Counter-Measures
2417	MCMV,Mine Counter-Measure Vessel
2418	MCNC,Microelectronics Center of North Carolina,Mixing Condensation Nucleus Counter
2419	MCP,Maintenance Collection Point,Male Chauvinist Pig
2420	MCR,My Chemical Romance
2421	MCSF,Marine Corps Security Forces
2422	MCT,Movement Control Team
2423	MCTIS,Mounted Co-operative Target Identification System
2424	MCU,Marine Corps University,Marvel Cinematic Universe,Medium close-up (camera direction in British TV scripts),Microcontroller unit,Milk clotting units,Ming Chuan University,Minimum coded unit (digital imaging),Multipoint control unit,Municipal Credit Union (New York),MD[edit]
2425	Md,Mendelevium
2426	MDA,Main Defensive Action/Area,Moldova (ISO 3166 trigram),Muscular Dystrophy Association
2427	MDF,Main distribution frame,Medium-density fiberboard
2428	MDG,Madagascar (ISO 3166 trigram),UN Millennium Development Goal
2429	MDM,Michigan Dartmouth MIT telescope consortium,Master data management
2430	MDNA,Madonna's 12th studio album title (2012)
2431	MDO,Membership Driven Organisation
2432	MDP,Markov Decision Process
2433	MDT,Mountain Daylight Time (UTC-6 hours)
2434	MDV,Maldives (ISO 3166 trigram)
2435	ME,Maine (postal symbol),Mechanical engineer[ing],Medical examiner,Middle East,Middle East Airlines (IATA code),Memory Effect,Myalgic Encephalomyelitis
2436	Me,Messerschmitt
2437	MEA,Maine Educational Assessment,Middle East Airlines,Millennium Ecosystem Assessment,Minimum en route altitude,Mono-ethanol Amine,Multilateral Environmental Agreement
2438	MEAC,Mid-Eastern Athletic Conference (ME-ac)
2439	MEC,Maine Central Railroad,Manta,Ecuador (IATA location identifier),Model European Council,Mountain East Conference,Mountain Equipment Co-op
2440	MECC,Minnesota Educational Computing Consortium (later Corporation,dissolved 1999)
2441	MECCA,Milwaukee Exposition Convention Center and Arena,a former name for the sports venue now known as UW-Milwaukee Panther Arena
2442	MECO,Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation)
2443	MEDEVAC,Medical evacuation
2444	MEDLI,Mars Science Laboratory Entry,Descent,and Landing Instrumentation,Medical & Scientific Libraries of Long Island,Model for Effluent Disposal using Land Irrigation
2445	MEDS,Mission Essential Data Set
2446	MEF,U.S. Marine Expeditionary Force,Minimum essential facility,Mission essential force
2447	MEG,MagnetoEncephaloGraphy
2448	MEI,Matsushita Electric Industrial Co.,Ltd.
2449	MEK,Magyar Elektronikus Konyvtar,Message encryption key,Methyl ethyl ketone,Mujahideen al-Khalq
2450	MEL,Maya Embedded Language,Michigan Electronic Library
2451	MELT,Metallic Line/Loop Test (ing)
2452	MEM,Message Exchange Mechanism,Microelectromechanical
2453	MEMS,Microelectromechanical System
2454	MEO,Medium earth orbit,Most efficient organization
2455	MER,Mars Exploration Rover
2456	MERL,Mitsubishi Electric Research Laboratories
2457	MES,Manufacturing Execution Systems
2458	MES,Marconi Electronic Systems,Medium Edison screw
2459	MESSENGER,MErcury Surface,Space ENvironment,GEochemistry and Ranging
2460	MET,Meteorological,Middle European Time
2461	METAR,[Meteorological] Aviation Routine weather report
2462	METOC,Meteorological and Oceanographic
2463	MEU,U.S. Marine Expeditionary Unit,Maximum Expected Utility
2464	MEV,Medical Evacuation Vehicle,Musica Elettronica Viva
2465	MeV,Megaelectronvolt
2466	MEX,Mexico (ISO 3166 trigram)
2467	MEZ,Missile Engagement Zone
2468	MF,Mayotte (FIPS 10-4 territory code),Megafarad
2469	mF,Millifarad
2470	MFSB,Mother,Father,Sister,Brother (1970s Philadelphia studio musicians collective)
2471	MG,Machine Gun,Madagascar (ISO 3166 digram),Major General,Mongolia (FIPS 10-4 country code),Morris Garage
2472	Mg,Magnesium,Megagram
2473	MGB,Medium Girder Bridge,Motor Gun Boat
2474	MGM,Metro Goldwyn Mayer,Montgomery,Alabama (Airport Code)
2475	MGPAM,My Gym Partner's a Monkey
2476	MGS,Mobile Gun System
2477	MH,Marshall Islands (postal symbol; ISO 3166 digram),Megahenry,Montserrat (FIPS 10-4 territory code)
2478	mH,Millihenry
2479	MHC,Major Histocompatibility Complex
2480	MHHW,Mean Higher High Water (nautical charts)
2481	MHL,Marshall Islands (ISO 3166 trigram)
2482	MHLW,Mean Higher Low Water (nautical charts)
2483	MHRA,(UK) Medicines and Healthcare products Regulatory Agency
2484	MHW,Mean High Water (nautical charts)
2485	MHWN,Mean High Water Neaps (nautical charts)
2486	MHWS,Mean High Water Springs (nautical charts)
2487	MHz,Megahertz
2488	Mi,Mebi
2489	MIA,Missing In Action
2490	MIAA,Maryland Interscholastic Athletic Association,Massachusetts Interscholastic Athletic Association,Michigan Intercollegiate Athletic Association,Mid-America Intercollegiate Athletics Association
2491	MIB,Men In Black,Mint In Box (Internet auction/trading listings)
2492	MICLIC,Mine Clearing Line Charge
2493	MICOM,Missile Command
2494	MID,Midway Islands (ISO 3166 trigram; obsolete 1986)
2495	MIDAS,Man-machine Integration Design and Analysis System
2496	MIDI,Musical Instrument Digital Interface
2497	MIDS,Multi-Function Information Distribution System
2498	MIFG,Shallow Fog (METAR Code)
2499	MIKE,Monitoring of Illegal Killing of Elephants
2500	MIL,Man-In-the-Loop
2501	MILC,Mirrorless interchangeable-lens camera
2502	MILF,Mother I'd Like to Fuck
2503	MIMAROPA,Mindoro,Marinduque,Romblon,Palawan (a region in the Philippines)
2504	MIMOSA,MIcroMeasurements Of Satellite Acceleration
2505	MIMPT,Member of the Institute of Maxillofacial Prosthetists and Technologists
2506	MIP,Multilateral Interoperability Programme,Multiple Identity Poster
2507	MIRA,MILAN Infra-Red Acquisition (thermal sight)
2508	MIRV,Multiple Independent Reentry Vehicle
2509	MIS,Management Information Systems,Museum Information System
2510	MISREP,Mission Report
2511	MISSI,Multilevel Information System Security Initiative
2512	MIT,Massachusetts Institute of Technology,methylisothiazoline,Milli Istihbarad Teskilati (Intelligence service of Turkey)
2513	MITL,Man-In-The-Loop
2514	MITS,see entry
2515	MJ,Megajoule,Michael Jordan
2516	mJ,Millijoule
2517	MJD,Modified Julian Day
2518	mK,Millikelvin
2519	MKG,Michael Kidd-Gilchrist (American basketball player)
2520	MKS,Metre-Kilogram-Second (system of units),MKS Inc. software company
2521	MKSA,Metre-Kilogram-Second-Ampere (system of units)
2522	ML,Mali (FIPS 10-4 country code; ISO 3166 digram),Maximum Likelihood,Megalitre
2523	mL,Millilitre
2524	MLA,Martial Law Administration of Bangladesh,Master of Landscape Architecture,Medical Library Association,Member of Legislative Assembly,Modern Language Association,Mutual legal assistance treaty,Myelosis Leucemica Acuta
2525	MLB,Major League Baseball
2526	MLC,Member of the Legislative Council (in India)
2527	MLE,Maximum likelihood estimation
2528	MLHW,Mean Lower High Water (nautical charts)
2529	MLI,Mali (ISO 3166 trigram)
2530	MLK,Martin Luther King,Jr.
2531	MLL,Major League Lacrosse
2532	MLLW,Mean Lower Low Water (nautical charts)
2533	MLP,My Little Pony
2534	MLRS,Multiple-Launch Rocket System
2535	MLS,Major League Soccer,Multiple Listing Service
2536	MLSE,Maple Leaf Sports & Entertainment (owner of several Toronto-based sports teams),Maximum likelihood sequence estimation
2537	MLSR,Missing,Lost or Stolen Report
2538	MLT,Malta (ISO 3166 trigram)
2539	MLVW,Medium Logistics Vehicle,Wheeled
2540	MLW,Mean Low Water (nautical charts)
2541	MLWN,Mean Low Water Neaps (nautical charts)
2542	MLWS,Mean Low Water Springs (nautical charts)
2543	Mm,Megametre
2544	mm,Millimetre
2545	MMA,Mixed martial arts,Moving Mechanical Assembly
2546	MMC,Machinist's Mate,Chief (USN rating),Materiel Management Centre
2547	MMCM,Machinist's Mate,Master Chief (USN rating),Magnetic Mine Counter Measure
2548	MMCS,Machinist's Mate,Senior Chief (USN rating)
2549	MMEV,Multi-Mission Effects Vehicle
2550	MMI,Magical MonkeyZ Inc.
2551	MMI,Man-Machine Interface
2552	MMI,McLean Meditation Institute
2553	MMIC,McLean Meditation Institute Certified
2554	MMIC,Mindfulness & Meditation Instructor,Certified
2555	MMO,Massively Multiplayer Online (computer game)
2556	MMOR,Master of Management in Operations Research
2557	MMORPG,Massively multiplayer online role-playing game
2558	MMPR,Mighty Morphin Power Rangers
2559	MMR,Measles,Mumps and Rubella vaccine,Myanmar (ISO 3166 trigram)
2560	MMS,Multimission Modular Spacecraft
2561	MMU,Manchester Metropolitan University,Manned Manoeuvring Unit
2562	Mn,Manganese
2563	MN,Meganewton,Minnesota (postal symbol),Monaco (FIPS 10-4 country code),Mongolia (ISO 3166 digram)
2564	mN,Millinewton
2565	MNB,Multinational Brigade
2566	MND,Motor Neurone Disease,Multinational Division
2567	MNE,Montenegro (ISO 3166 trigram)
2568	MNG,Multiple-image Network Graphics,Mongolia (ISO 3166 trigram)
2569	MNMF,Multi-National Maritime Force
2570	MNP,Northern Mariana Islands (ISO 3166 trigram)
2571	MNS,Mission Needs Statement
2572	Mo,Molybdenum
2573	MOA,Museum of Art (Brigham Young University)
2574	MOAB,Massive Ordnance Air Blast (official),Mother Of All Bombs (slang)
2575	MOB,Man Over Board,Marching Owl Band,Movable Object Block
2576	MOC,Macedonian Orthodox Church,Measure Of Capability,Mission Operations Centre,My Own Creation (Lego)
2577	MOCAS,Mechanization Of Contract Administration Services
2578	MOD,Magneto-optical disc,Masters of Deception,Minimum Object Distance,Multiple Organ Dysfunction
2579	MoD,Ministry of Defence (United Kingdom) and various other countries
2580	modem,Modulator-Demodulator
2581	Moe,Marvel of entertainment
2582	MOE,Measure Of Effectiveness
2583	MOF,Ministry of Finance (Japan)
2584	MOFA,Ministry of Foreign Affairs (Japan)
2585	MOH, Medal of Honor,Music On Hold
2586	MOID,Minimum Orbital Intersection Distance
2587	MOJWA,Movement for Oneness and Jihad in West Africa
2588	MOLO,Mobile Other Licensed Operator (UK)
2589	MOM,Master's Degree in Oriental medicine
2590	MOM,Message Oriented Middleware
2591	MoM,Multiple of the median
2592	MoMA,Museum of Modern Art (NYC)
2593	MOND,Modified Newtonian Dynamics
2594	MOO,Measure Of Outcome
2595	MOPE,Ministry of Population and Environment (Nepal),Most Oppressed People Ever (politics)
2596	MOPP,Mission-Oriented Protective Posture
2597	MORP,Meteorite Observation and Recovery Project
2598	MOSFET,Metal-Oxide-Semiconductor Field-Effect Transistor
2599	MOSS,MObile Submarine Simulator,Moving Object Support System
2600	MOT,Ministry of Transport (UK)
2601	MOTA,Member of the Orthodontic Technicians Association
2602	MOTESS,Moving Object and Transient Event Search System
2603	MOTO,Mail Order / Telephone Order,Master of the obvious
2604	MOU,Memorandum Of Understanding
2605	MOVES,Modeling,Virtual Environments,and Simulation Institute
2606	MOW,Maintenance of way (also MW)
2607	MOZ,Mozambique (ISO 3166 trigram)
2608	MPA,Maritime Patrol Aircraft,Master of Public Administration
2609	MPa,Megapascal
2610	mPa,Millipascal
2611	MPAA,Motion Picture Association of America
2612	MPC,Minor Planet Center,Minor Planet Circular
2613	MPEC,Minor Planet Electronic Circular
2614	MPEG,Motion Pictures (Coding) Experts Group
2615	MPEV,Multi-Purpose Engineering Vehicle
2616	MPF,Maritime Prepositioning Force
2617	MPFC,Medial PreFrontal Cortex
2618	MPG,Miles Per Gallon
2619	MPMC,Medial PreMotor Cortex
2620	MPSI,Member of the Pharmaceutical Society of Ireland
2621	MPSoC,MultiProcessor System-on-Chip
2622	MPSRON,Maritime Propositioning Ship Squadron
2623	MQ,Martinique (ISO 3166 digram),Midway Islands (FIPS 10-4 territory code)
2624	MR,Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2625	MRAV,Multi-Role Armoured Vehicle
2626	MRBM,Medium Range Ballistic Missile
2627	MRC,Maintenance Requirements Card
2628	MRD,Motorized Rifle Division
2629	MRGW,Medium-Range Guided Weapon
2630	MRI,Magnetic Resonance Imaging
2631	MRL,Multiple Rocket Launcher
2632	MRPharmS,Member of the Royal Pharmaceutical Society (Great Britain)
2633	MRR,Maximum Rock and Roll,Minimum-Risk Route,My Restaurant Rules
2634	MRS,Magnetic Resonance Spectroscopy
2635	MRSA,Methicillin-resistant Staphylococcus aureus
2636	MRT,Mass Rapid Transit — used as either an official or unofficial name for metro systems in Singapore,Kaoshiung,Bangkok,Taipei,Chennai,and Delhi,Mauritania (ISO 3166 trigram)
2637	MRTFB,U.S. Major Range and Test Facility Base
2638	Ms,Megasecond
2639	mS,Millisiemens
2640	MSB,Main Support Battalion,Most Significant Bit (or Byte)
2641	MSD,Minimum Safe Distance
2642	MSDB,Multi Source Data Base
2643	MSE,Multiple Subscriber Element
2644	MSG,Message
2645	MSG,MonoSodium Glutamate,Madison Square Garden (either the 1879,1890,1925,or current versions of the venue)
2646	MSH,Medium Support Helicopter,Mount Saint Helens
2647	MSI,Micro-Star International,Multispectral imagery
2648	MSIE,Microsoft Internet Explorer,Master of Science in Industrial Engineering
2649	MSL,Mars Science Laboratory,Mean Sea Level,Missile
2650	MSLP,Mean Sea Level Pressure
2651	MSM,Mainstream media,Men who have sex with men,Mount St Mary's School
2652	MSN,Microsoft Network,Master of Science in Nursing
2653	MSNBC,Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2654	MSO,Multiple System Operator
2655	MSPA,Migrant and Seasonal worker Protection Act,MS Paint Adventures
2656	MSPB,Merit Systems Protection Board
2657	MSR,Main Supply Route,Module Service Record,Montserrat (ISO 3166 trigram),Motor Schlepp Regulung,Mountain Safety Research (outdoor supplies manufacturer)
2658	MSSA,Methicillin-susceptible Staphylococcus aureus
2659	MST,Madison Symmetric Torus,Mountain Standard Time (UTC-7 hours),MST3K or MST3k,Mystery Science Theater 3000
2660	MSU,Michigan State University,Montana State University,Mountain State University,Lomonosov Moscow State University (Russia,a.k.a. MGU),MT[edit]
2661	Mt,Meitnerium
2662	mT,Millitesla
2663	MTA,Metropolitan Transportation Authority (Boston) (now Massachusetts Bay Transportation Authority),Metropolitan Transportation Authority (New York)
2664	MTBF,Mean time between failures
2665	MTF,Magnetized target fusion,Medical Treatment Facility,Message Text Format,Modulation transfer function (optics)
2666	MtF,Male-to-female transsexual
2667	MTG,Magic: The Gathering
2668	MTP,Maritime Tactical Publication,Materiel Transfer Plan,Mission Training Plan
2669	MTQ,Martinique (ISO 3166 trigram)
2670	MTS,Maintenance Training System,Manitoba Telecom Services,Michigan Terminal/Timesharing System,Movement Tracking System,Multichannel television sound,Multi-Technical Services
2671	MTT,Methylthiazol tetrazolium (assay)
2672	MTV,MainosTeleVisio (Finnish commercial TV company),Music TeleVision
2673	MTVL,Mobile Tracked Vehicle,Light
2674	MTWS,MAGTF Tactical Warfare System
2675	MU,Mauritius (ISO 3166 digram),Oman (FIPS 10-4 country code; from Muscat)
2676	MUS,Mauritius (ISO 3166 trigram)
2677	MV,Maldives (FIPS 10-4 country code; ISO 3166 digram),Megavolt,Motor Vehicle,Motor Vessel
2678	mV,Millivolt
2679	MVC,Missouri Valley Conference
2680	MVFC,Missouri Valley Football Conference
2681	MVNO,Mobile virtual network operator
2682	MW,Maintenance of way (also MOW),Malawi (ISO 3166 digram),Medium Wave (radio),Megawatt,Mountain West (Conference) (formal initialism since July 2011)
2683	mW,Milliwatt
2684	MWESH,Machismo Wizards Extended SHelter (operating system)
2685	MWI,Malawi (ISO 3166 trigram)
2686	MWOA,Mount Wilson Observatory Association
2687	MWR,Morale,Welfare,and Recreation
2688	MWTB,Mounted Warfare Test Bed
2689	MX,Mail Exchange,Mexico (FIPS 10-4 country code; ISO 3166 digram),Missile eXperimental
2690	MY,Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2691	MYOB,Mind Your Own Business
2692	MYS,Malaysia (ISO 3166 trigram)
2693	MYT,Mayotte (ISO 3166 trigram)
2694	MZ,Mach-Zehnder (interferometer),Magnetic Azimuth,Move,Zig (Zero Wing),Mozambique (FIPS 10-4 country code; ISO 3166 digram)
2695	n,Nano
2696	N,Newton,Nitrogen,North
2697	N3F,National Fantasy Fan Federation
2698	NA,Namibia (ISO 3166 digram),Narcotics Anonymous,National Archives,Negative Acknowledge
2699	nA,Nanoampere
2700	Na,Sodium (Latin Natrium)
2701	NAA,N-Acetylaspartate
2702	NAAD,North American Air Defense
2703	NAAFI,Navy,Army and Air Force Institute (UK),No Ambition And Fuckall Interest (RSA army slang)
2704	NAAK,Mark I NAAK,Nerve Agent Antidote Kit
2705	NAAQS,National Ambient Air Quality Standards
2706	NAAWS,NATO Anti-Air Warfare System
2707	NACA,(U.S.) National Advisory Committee for Aeronautics (1915-1958,became NASA)
2708	NACC,North Atlantic Cooperation Council
2709	NACISA,NATO Communications and Information Systems Agency
2710	NACMA,NATO Air Command and Control System Management Agency
2711	NACRA,North America Caribbean Rugby Association (more specifically rugby union)
2712	NAEC,U.S. Naval Air Engineering Center
2713	NAF,NATO Architecture Framework,Naval Air Facility
2714	NAFERA,Native American Free Exercise of Religion Act
2715	NAFLD,NonAlcoholic Fatty Liver Disease
2716	NAFO,Northwest Atlantic Fisheries Organization
2717	NAFTA,North American Free Trade Agreement
2718	NAGPRA,Native American Graves Protection and Repatriation Act
2719	NAI,Named Area of Interest,Network Access Identifier
2720	NAICS,North American Industry Classification System
2721	NAIL,Neurotics Anonymous
2722	NAILS,National Airspace Integrated Logistics System
2723	NAIRU,Non Accelerating Inflation Rate of Unemployment
2724	NAK,Negative Acknowledge
2725	NAM,Namibia (ISO 3166 trigram)
2726	NAMBLA,North American Man-Boy Love Association
2727	NAMRL,Naval Aerospace Medical Research Laboratory
2728	NaN,Not A Number (computing)
2729	NAO,UK National Audit Office
2730	NAPS,Navy Acquisition Procedures Supplement
2731	NARA,(U.S.) National Archives and Records Administration
2732	NARAL,National Abortion Rights Action League
2733	NARDAC,Naval Regional Data Automation Center
2734	NARDIC,U.S. Navy Acquisition Research and Development Information Center
2735	NARPV,National Association for Remotely Piloted Vehicles
2736	NAS,National Academy of Sciences,National Air Space,National Audubon Society,Naval Air Station,New Attack Submarine
2737	NASCAR,National Association for Stock Car Auto Racing
2738	NASDAQ,National Association of Securities Dealers Automated Quotations
2739	NASED,National Association of State Election Directors [1][2]
2740	NASH,Non-Alcoholic Steatohepatitis
2741	NASP,National Aerospace Plane
2742	NASS,National Association of Secretaries of State [3]
2743	NatGeo,National Geographic
2744	NATO,National Association of Theatre Owners,North Atlantic Treaty Organisation
2745	NaUKMA,National University of Kyiv-Mohyla Academy
2746	NAV,Navigation[al]
2747	NAVCAMS,Naval Communications Area Master Station
2748	NAVCC,National Audio-Visual Conservation Center
2749	NAVCENT,Naval Forces U.S. Central Command
2750	NAVDAC,Naval Data Automation Command
2751	NAVEUR,Naval Forces U.S. European Command
2752	NAVFE,U.S. Naval Forces,Far East
2753	NAVFOR,Naval Force
2754	NAVMACS,Naval Modular Automatic Communication Subsystem
2755	NAVNET,Navy Network
2756	NAVS,Non-Cooperative Airborne Vector Scoring
2757	NAVSAT,Navigation Satellite
2758	NAVSPACECOM,U.S. Navy Space Command
2759	NAVSPASUR,U.S. Naval Space Surveillance System
2760	NAVSTAR,Navigation Satellite Timing And Ranging
2761	NAVTACNET,Navy Tactical Network
2762	NAWC,U.S. Naval Air Warfare Center
2763	Nb,Niobium
2764	NBA,National Basketball Association
2765	NBC,National Broadcasting Corporation,Nuclear,Biological,and Chemical
2766	NBCRS,NBC (Nuclear,Biological,and Chemical) Reconnaissance System
2767	NBIC,Nanotechnology,Biotechnology,Information Technology,Cognitive Science
2768	NBL,National Basketball League (Australia)
2769	NBT,Nitroblue tetrazolium (assay)
2770	nC,Nanocoulomb
2771	NC,Network Computer,New Caledonia (ISO 3166 digram),Node Centre,Non-Consensual,Normally Closed,North Carolina (postal symbol)
2772	NCA,National Command Authority
2773	NCAR,U.S. National Center for Atmospheric Research
2774	NCB,National Codification Bureau
2775	NCCAM,U.S. National Center for Complementary and Alternative Medicine
2776	NCCUSL,National Conference of Commissioners on Uniform State Laws (U.S.)
2777	NCDDR,U.S. National Center for the Dissemination of Disability Research
2778	NCES,U.S. National Center for Education Statistics,Net-Centric Enterprise Services
2779	NCI,U.S. National Cancer Institute
2780	NCIS,National Criminal Intelligence Service (British),Naval Criminal Investigative Service (U.S. Navy; see also NCIS,a U.S. TV series based on this unit)
2781	NCL,New Caledonia (ISO 3166 trigram)
2782	NCLR,National Council of La Raza
2783	NCMO,No Commitment Make Out
2784	NCND,Non Circumvention & Non Disclosure,Neither Confirm Nor Deny,New Concept New Design
2785	NCO,Non-Commissioned Officer
2786	NCP,Net Contracted Purchases
2787	NCR,National Cash Register Co.
2788	NCTR,Non-Co-operative Target Recognition
2789	NCW,Network Centric Warfare
2790	Nd,Neodymium
2791	ND,Non-Disclosure,North Dakota (postal symbol)
2792	NDAA,U.S. National Defense Authorization Act
2793	NDBP,Non-Departmental Public Body (Scotland)
2794	NDCC,New Directions Counseling Center (Concord,California)
2795	NDP,New Democratic Party (Canada)
2796	NDS,Nintendo DS
2797	NDU,National Defense University (Washington,DC)
2798	NE,Nebraska (postal symbol),Niger (ISO 3166 digram),North-East
2799	Ne,Neon
2800	NEA,National Education Association (U.S. labor union),Near-Earth Asteroid,Nuclear Energy Agency (OECD)
2801	NEAT-Near-Earth Asteroid Tracking,,National Emergency Access Target (Au Health)
2802	NECTEC,National Electronics and Computer Technology Center (Thailand)
2803	NED,Netherlands (IOC and FIFA trigram,but not ISO 3166)
2804	NEI,National Eye Institute,Not Enough Information,Nuclear Energy Institute
2805	NEMS,National Energy Modeling System (USDOE-EIA)
2806	NEPA,National Environmental Policy Act
2807	NER,Niger (ISO 3166 trigram)
2808	NERICA,New Rice for Africa
2809	NESDIS,National Environmental Satellite,Data and Information Service
2810	NESP,NSA/CSS Enterprise Standards Program
2811	NET,National Educational Television
2812	NETCU,(UK) National Extremism Tactical Co-ordination Unit
2813	NETL,(US) National Energy Technology Laboratory
2814	NETWARS,Network Warfare Simulation
2815	NEWS,Navy Electronic Warfare Simulator,North,East,West,South
2816	NEX,Navy EXchange
2817	nF,Nanofarad
2818	NF,Norfolk Island (ISO 3166 digram)
2819	NFA,(U.S.) National Firearms Act (often used to refer to the guns and accessories regulated under this law),No-Fire Area
2820	NFC,National Football Conference,Near field communication
2821	NFER,National Foundation for Educational Research
2822	NFG,No Fucking Good
2823	NFHS,National Federation of State High School Associations
2824	NFI,Not F****** Interested
2825	NFK,Norfolk Island (ISO 3166 trigram)
2826	Nfld,Newfoundland
2827	NFPA,National Fluid Power Association (United States)
2828	NFT,No Further Text
2829	NG,Natural Gas,Next Generation,Niger (FIPS 10-4 country code),Nigeria (ISO 3166 digram)
2830	NGA,National Geospatial-Intelligence Agency,Nigeria (ISO 3166 trigram)
2831	NGATS,New Generation Army Targetry System
2832	NGH,Northern General Hospital
2833	NGO,non-governmental organization
2834	NGR,Nigeria (IOC trigram,but not ISO 3166 or FIFA)
2835	NGS,Naval Gunfire Support
2836	nH,Nanohenry
2837	NH,New Hampshire (postal symbol),New Hebrides (ISO 3166 digram; obsolete 1980),Vanuatu (FIPS 10-4 country code; from New Hebrides)
2838	NHANES,National Health and Nutrition Examination Survey
2839	NHB,New Hebrides (ISO 3166 trigram; obsolete 1980)
2840	NHB,No Holds Barred radio (Link)
2841	NHL,National Hockey League
2842	NHO,Næringslivets Hovedorganisasjon (Confederation of Norwegian Enterprises,a Norwegian employers' organisation)
2843	NHRA,National Hot Rod Association
2844	NHS,National Health Service (UK)
2845	NI,Nicaragua (ISO 3166 digram),Nigeria (FIPS 10-4 country code)
2846	Ni,Nickel
2847	NIAAA,U.S. National Institute on Alcohol Abuse and Alcoholism
2848	NIAG,NATO Industrial Advisory Group
2849	NIAID,National Institute of Allergies and Infectious Disease
2850	NIAMD,National Institute of Arthritis and Musculoskeletal Diseases
2851	NIB,New In Box (Internet auction/trading listings)
2852	NIBP,Non-invasive blood pressure monitor
2853	NIC,Network Interface Card,Nicaragua (ISO 3166 trigram)
2854	NicA,Nicotine Anonymous
2855	NICAP,National Investigations Committee on Aerial Phenomena
2856	NICE,UK. National Institute for Health and Clinical Excellence
2857	NICHD,National Institute of Child Health and Human Development [4]
2858	NICP,National Inventory Control Point
2859	NIDDK,National Institute of Diabetes and Digestive and Kidney Diseases
2860	NIDRR,National Institute on Disability Research and Rehabilitation
2861	NIEHS,National Institute of Environmental Health Sciences
2862	NIG,Niger (IOC and FIFA trigram,but not ISO 3166)
2863	NIH,National Institutes of Health,Not Invented Here
2864	NIIN,National Item Identification Number
2865	NIMA,National Imagery and Mapping Agency (became NGA)
2866	NIMBY,Not In My Back Yard (See NOME)
2867	NIMG,Not In My Generation
2868	NIMH,National Institute of Medical Herbalists,National Institute of Mental Health
2869	NIN,Nine Inch Nails (band)
2870	NIPR,National Institute of Polar Research (Japan)
2871	NIR,Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2872	NISAC,U.S. National Infrastructure Simulation and Analysis Center
2873	NISCAP,NSA Information System Certification and Accreditation Program
2874	NISER,National Institute of Science Education and Research
2875	NIST, National Institute of Standards and Technology
2876	NIT,National Invitation Tournament (U.S. college basketball),National Institutes of Technology (India)
2877	NITFS,National Imagery Transmission Format Standard
2878	NIU,Niue (ISO 3166 trigram)
2879	nJ,Nanojoule
2880	NJ,New Jersey (postal symbol)
2881	NJHS,National Junior Honor Society
2882	NJPW,New Japan Pro Wrestling
2883	nK,Nanokelvin
2884	NKA,No Known Allergies
2885	nL,Nanolitre
2886	NL,Netherlands (ISO 3166 and FIPS 10-4 country code digram),Newfoundland and Labrador (postal symbol)
2887	NLB,Non-Linear Battlefield
2888	NLD,Netherlands (ISO 3166 trigram)
2889	NLF,National Liberation Front (disambiguation)
2890	NLL,National Lacrosse League
2891	NLP,Natural Language Processing,Neuro-Linguistic Programming (pseudoscience)
2892	NLW,Non-Lethal Weapon
2893	nm,Nanometre
2894	NM,New Mexico (postal symbol)
2895	NMCI,Navy Marine Corps Intranet
2896	NMCS,Not Mission Capable Supply (SM&R code)
2897	NMD,U.S. National Missile Defense
2898	NMHNFG,Not Made Here,No Fucking Good
2899	NMN,No middle name
2900	NMR,Nuclear Magnetic Resonance
2901	NMSG,NATO Modelling and Simulation Group
2902	nN,Nanonewton
2903	NNE,North North-East
2904	NNSA,U.S. National Nuclear Security Administration
2905	NNW,North North-West
2906	NO,Nitric Oxide,Normally Open,Norway (ISO 3166 and FIPS 10-4 country code digram)
2907	No,Nobelium
2908	NOAA,U.S. National Oceanic and Atmospheric Administration
2909	NOAF,Norwegian Air Force
2910	NOAO,National Optical Astronomy Observatory
2911	NOC,UK. National Oceanography Centre
2912	NODEF,NATO Oceanographic Data Exchange Format
2913	NOGI,New Orleans Grande Isle (award for diving)
2914	NOLA,New Orleans,Louisiana (LA is the official postal code for Louisiana)
2915	NOLF,Navy OutLying Field
2916	NoMBO,Non-mine,Mine-like Bottom Object
2917	NOME,Not on Mars Either
2918	NOME,Not on Mars Either (see NIMBY)
2919	NOPA,National Office Products Alliance,National Office Products Association
2920	NOR,Norway (ISO 3166 trigram)
2921	NORCECA,North,Central America and Caribbean Volleyball Confederation
2922	NORELPREF,No religious preference
2923	NORTHAG,Northern Army Group
2924	NOS,Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme)
2925	NOSA,NATO OSI Security Architecture
2926	NOTAFLOF,No One Turned Away For Lack Of Funds
2927	NOW,National Organization for Women
2928	NP,National Permit,A permit in India for trucks so they can go anywhere in the nation
2929	Np,Neap tide (nautical charts),Neptunium
2930	NP,Nepal (ISO 3166 and FIPS 10-4 country code digram)
2931	NPB,Nippon Professional Baseball
2932	NPC,National Postgraduate Committee,National Provincial Championship (New Zealand rugby competition,now defunct),Navigation Planning Chart,Non-Player Character (role-playing games)
2933	NPCS,Non-Passenger Coaching stock (in Railways)
2934	NPD,Nationaldemokratische Partei Deutschlands (German)
2935	NPDI,New Product Development and Introduction
2936	NPG,Needline/Network Participation Group
2937	NPH,Normal Pressure Hydrocephalus
2938	NPL,National Priorities List,Nepal (ISO 3166 trigram)
2939	NPO,nothing by mouth
2940	NPOV,Neutral Point Of View
2941	NQ,Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2942	NQOCD,Not Quite Our Class,Dear (or Darling). (Upper-class English slang)
2943	NR,Nauru (ISO 3166 and FIPS 10-4 country code digram)
2944	NRA,National Rifle Association
2945	NRAO,National Radio Astronomy Observatory
2946	NRC,National Research Council (U.S.),Nuclear Regulatory Commission (U.S.)
2947	NRDC,(U.S.) Natural Resources Defense Council
2948	NREL,U.S. National Renewable Energy Laboratory
2949	NRK,Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2950	NRMP,National Resident Matching Program (U.S. medicine)
2951	NRO,U.S. National Reconnaissance Office
2952	NRT,Near Real Time
2953	NRTA,National Rat Terrier Association,National Retail Tenants Association,National Retired Teachers Association,Northwest Regional Transmission Association
2954	NRU,Nauru (ISO 3166 trigram)
2955	ns,Nanosecond
2956	nS,Nanosiemens
2957	NS,Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code)
2958	NSA,U.S. National Security Agency,Naval Support Activity,No Strings Attached
2959	NSABB,National Science Advisory Board for Biosecurity
2960	NSAID,Non-Steroidal Anti-Inflammatory Drug
2961	NSB,Norges Statsbaner (Norwegian State Railways)
2962	NSC,National Security Council
2963	NSDL,National Science Digital Library (US)
2964	NSG,National System for Geospatial-Intelligence
2965	NSN,National Stock Number
2966	NSNA,National Student Nurses' Association
2967	NSO,National Standardization Office (ABCA)
2968	NSS,(U.S.) Naval Simulation System
2969	NST,(UK) Nimrod Software Team
2970	NSTAC,National Security Telecommunications Advisory Committee
2971	NSW,New South Wales (postal symbol)
2972	nT,Nanotesla
2973	NT,National Trust (UK),Saudi-Iraqi neutral zone (ISO 3166 digram; obsolete 1993),New Technology (Windows NT),Northern Territory (Australia) (postal symbol),Northwest Territories (Canada) (postal symbol)
2974	NTC,National Training Center,Negative Temperature Coefficient (thermistor)
2975	NTDS,Naval Tactical Data System
2976	NTP,Network Time Protocol
2977	NTR,Network Time Reference
2978	NTRA,National Thoroughbred Racing Association
2979	NTSB,National Transportation Safety Board
2980	NTSC,National Television Standards Committee (colloquially,Never Twice the Same Color)
2981	NTV,Non-Tactical Vehicle
2982	NTY,(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2983	NTZ,Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2984	NU,Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol)
2985	NUL,Null character (ASCII code of control character),National Urban League
2986	NUTS,Nuclear Utilization Target Selection
2987	NUWC,U.S. Naval Undersea Warfare Center
2988	nV,Nanovolt
2989	NVEOL,Night Vision and Electro-Optics Laboratory
2990	NVESD,CERDEC Night Vision and Electronic Sensors Directorate,Fort Belvoir,Virginia
2991	NVG,Night Vision Goggles
2992	NVL,Night Vision Laboratory
2993	nW,Nanowatt
2994	NW,North-West
2995	NW,Nuclear Weapon
2996	NWA,National Wrestling Alliance
2997	NWF,National Wildlife Federation
2998	NWFZ,Nuclear-Weapon-Free Zone
2999	NWHN,U.S. National Women's Health Network
3000	nWo,New World Order (see article for explanation of idiosyncratic capitalization)
3001	NWOAHM,New Wave of American Heavy Metal
3002	NWOBHM,New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
3003	NWRA,National Wildlife Rehabilitators Association
3004	NWSL,National Women's Soccer League (U.S.)
3005	NWT,North-West Territories
3006	NXA,21st arcade game in the Pump It Up series
3007	NXD,Native XML
3008	NXE,New Xbox Experience
3009	NXG,New Cross Gate station
3010	NXL,National XBall League
3011	NXN,Nike Cross Nationals
3012	NY,New York (postal symbol)
3013	NYC,New York City
3014	NYHA,New York Heart Association
3015	NYO,National Youth Orchestra of Great Britain
3016	NYRA,National Youth Rights Association,New York Racing Association (horse racing)
3017	NYSE,New York Stock Exchange
3018	NZ,New Zealand (ISO 3166 and FIPS 10-4 country code digram)
3019	NZC,New Zealand Cricket
3020	NZL,New Zealand (ISO 3166 trigram)
3021	NzL,Noze looan (online/event listings)
3022	NZOSS,New Zealand Open Source Society
3023	NZRU,New Zealand Rugby Union
3024	O,Oberst,Observer,Obstacle,Octal,Officer,Official,Oh,Operational,Operator,Oprah (magazine),Outstanding,Oxygen
3025	OA,Operational Analysis,Overeaters Anonymous
3026	OAC,On Approved Credit
3027	OAP,Old Age Pensioner (UK)
3028	OARSI,Osteoarthritis Research Society International
3029	OAS,Organization of American States
3030	OASIS,Objects and Agents for Information Systems and Simulation,Organization for the Advancement of Structured Information Standards
3031	OASIS,Ontario Agencies Supporting Individuals with Special Needs
3032	OASIS,Ontario Association of Sewage Industry Services
3033	OASP,Operational Analysis Support Paper/Plan
3034	OAU,Organization for African Unity
3035	OB,Obedience,Obligation,Obligatory,Obsolete,Obstetrics,Ocean Beach (California),Off Break (cricket),Old Bryanstonian,Order of Battle,Outlet Box (electrical),Overbought (stock market),Oversight Board
3036	OBE,Officer of the Order of the British Empire
3037	OBS,Observation/Observer,Obsolete,Obstacle,Off Balance Sheet,Optical Burst Switching (IEEE),Organic Brain Syndrome,Organization(al) Breakdown Structure
3038	OBSS,Off Board Sensor Systems,Ordo Byantinus Sancti Sepulchri (Byzantine Order of the Holy Sepulchre),Orbiter Boom Sensor System (space shuttle),Origins Billion Star Survey
3039	OBX,Outer Banks (North Carolina)
3040	OC,Officer Commanding
3041	OCA,Observatoire de la Côte d'Azur,Offensive Counter-Air
3042	OCD,Obsessive-Compulsive Disorder
3043	OCFS,Oracle Cluster File System
3044	OCFS2,Oracle Cluster File System Release 2
3045	OCMCC,[2] Orchard County MCC
3046	OCN,Oncology Certified Nurse
3047	OCO,Oort Cloud Object
3048	OCOKA,Observation,Cover and concealment,Obstacles,Key terrain,and Avenues of approach (mnemonic)
3049	OCR,Optical Character Recognition
3050	OCS,see entry
3051	OD,Old Dragon,Ordnance Datum (nautical charts),Overdose
3052	ODAS,OCA-DLR Asteroid Survey
3053	ODB,Ol' Dirty Bastard (rapper),One Dirty B*tch/Broad/Babe (professional wrestler),Operational Data Base,Original David Baker (professional poker player; used to distinguish from another professional poker player of the same name),Oxford Dictionary of Byzantium
3054	ODBC,Open DataBase Connectivity
3055	ODI,Office for Disability Issues (UK government agency),One Day International (cricket),Open Data-Link Interface,Oracle Data Integrator,Overseas Development Institute (UK think tank),OE[edit]
3056	OEA,(U.S.) Office of Economic Adjustment
3057	OECD,Organisation for Economic Co-operation and Development (international)
3058	OED,Oxford English Dictionary
3059	OEG,Operation Exposure Guidance
3060	OEIS,On-Line Encyclopedia of Integer Sequences
3061	OEM,Original Equipment Manufacturer
3062	OFA,Occipital Face Area
3063	OFDA,U.S Agency for International Development's Office of Foreign Disaster Assistance
3064	OGC,Open Geospatial Consortium
3065	OGD,Other Government Department
3066	OGO,Other Government Organization
3067	OGX,OUARGLA,a petroleum state in the south of Algeria
3068	OH,Ohio (postal symbol)
3069	OHC,OverHead-Cam engine
3070	OHHLA,Original Hip-Hop Lyrics Archive
3071	OHIP,Ontario Health Insurance Plan
3072	OHMS,On Her (or His) Majesty's Service (also written: O.H.M.S.)
3073	OHP,Observatoire de Haute-Provence
3074	OHSS,Ovarian Hyperstimulation Syndrome
3075	OIC,Officer In Charge
3076	OIF,Operation Iraqi Freedom
3077	OIOC,Oriental & India Office Collections (in the British Library)
3078	OJ,Orange Juice,O.J. Simpson
3079	OJT,On-the-Job Training
3080	OKC,Oklahoma City
3081	OLED,Organic Light-Emitting Diode
3082	OLS,Operational Linescan System
3083	OM,Oman (ISO 3166 digram),Olympique de Marseille (French football club)
3084	OMA,Open Mobile Alliance,Operations & Maintenance,Army
3085	OMB,U.S. Office of Management and Budget,Ontario Municipal Board,Order of Mapungubwe in Bronze
3086	OMD,Orchestral Manoeuvres in the Dark (1980s pop group)
3087	OME,Osaka Mercantile Exchange
3088	OMFG,Oh My Fucking God
3089	OMG,Oh My God or Or My Gosh
3090	OMN,Oman (ISO 3166 trigram)
3091	OMNCS,U.S. Office of the Manager for the National Communications System
3092	OMP,Order of Mapungubwe in Platinum
3093	OMS,Order of Mapungubwe in Silver
3094	OMT,Object Model Template
3095	OMW,On My Way,Oh My Word
3096	ON,Ontario (postal symbol)
3097	ONC,Orthopaedic Nurse Certified
3098	ONG,Orthodontic National Group
3099	ONI,(U.S.) Office of Naval Intelligence
3100	Onna,Oniong,Nnung Ndem,and Awa,a Local Government Area in Nigeria
3101	ONS,Operational Needs Statement
3102	OO,Object Oriented,Over & Out
3103	OOAD,Object Oriented Analysis and Design
3104	OOBE,Out-of-body experience
3105	OOCL,Orient Overseas Container Line
3106	OOF,Out of Facility
3107	OOMF,One Of My Followers
3108	OOO,Out Of the Office
3109	OOP,Object-Oriented Programming,Out Of Print
3110	OOS,Occupational Overuse Syndrome,OneSAF Objective System,Open Operating System,Out Of Service
3111	OOTW,Operations Other Than War
3112	OPA,Other Procurement,Army
3113	OPAC,Online Public Access Catalogue
3114	OPCON,Operational control
3115	OPCW,Organisation for the Prohibition of Chemical Weapons
3116	OPEC,Organization of the Petroleum Exporting Countries
3117	OPFOR,Opposing force
3118	OPI,Office of Primary Interest,Open Prepress Interface
3119	OPINTEL,Operational Intelligence
3120	OPLAN,Operation plan (also OpPlan)
3121	OPORD,Operation order
3122	OPP,Ontario Provincial Police,Operational Planning Process,Other People's Property/Pussy/Penis (song)
3123	OPS,On-base plus slugging (baseball statistics),Operations
3124	OPTAR,Operational target
3125	OPV,Offshore Patrol Vessel
3126	ORAU,Oak Ridge Associated Universities
3127	ORB,Object Request Broker
3128	ORBAT,Order of Battle
3129	ORF,Operational iness Float
3130	ORISE,Oak Ridge Institute for Science and Education
3131	ORNL,Oak Ridge National Laboratory
3132	OS,Operating System
3133	Os,Osmium
3134	OSA,Order of St. Augustine
3135	OSCE,Organisation for Security and Cooperation in Europe
3136	OSDL,Open Source Development Labs
3137	OSE,Own Separate Entrance
3138	OSERS,U.S. Department of Education Office of Special Education and Rehabilitative Services
3139	OSETI,Optical SETI also Optical SETI
3140	OSHA,Occupational Safety and Health Administration
3141	OSIA,(U.S.) On-Site Inspection Agency
3142	OSM,One Saturday Morning
3143	OSPA,Operations Security Professional's Association site of OSPA
3144	OSPA,Oregon School Psychologists Association [3]
3145	OSRH,Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
3146	OSS,Office of Strategic Services (1942-1945,forerunner of CIA)
3147	OTB,Off The Ball,Offtrack Betting,OneSAF Testbed (a descendant of ModSAF)
3148	OTC,Over-The-Counter (drugs)
3149	OTD,Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
3150	OTEA,(U.S. Army) Operational Test Evaluation Agency
3151	OTI,Office of Transition Initiatives (United States Agency for International Development)
3152	OTOH,On The Other Hand
3153	OTSBH,Over The Shoulder Boulder Holder
3154	OTW,On The Way
3155	OTYBL,Over To You Blue Leader
3156	OTYRL,Over To You Red Leader
3157	OU,University of Oklahoma
3158	OVC,Overcast (METAR Code),Ohio Valley Conference
3159	OVV,Optically Visually Violent,or Optically Violently Variable,a type of quasar
3160	OW,Old Wykehamist
3161	OWN,Oprah Winfrey Network
3162	OX,IATA code for Orient Thai Airlines
3163	OXC,Optical cross-connect
3164	OXM,Official Xbox Magazine
3165	OXT,Oxytocin
3166	OZ,(?) Australia
3167	P,Peta,Phosphorus
3168	p,pico
3169	P2P,Peer-to-peer (networking)
3170	Pa,pascal,Protactinium
3171	pA,picoampere
3172	PA- Pamela Anderson,Panama (ISO 3166 digram),Paraguay (FIPS 10-4 country code),Partial Agonist,Pennsylvania (postal symbol),petampere,PolyAmide (Nylon),Prince Albert piercing,Public Address (vocal amplification system),Public Affairs,PA 6,Nylon 6 (PolyAmide) (similarly for PA 11,12,46,66,610)
3173	PAA,Position Area for Artillery
3174	PABX,Private Automated Branch eXchange (company phone system)
3175	PAC,Pan Africanist Congress,Partial Solar Calibrator,Patriot Advanced Capabilities,Political action committee, Primary Auditory Cortex
3176	PACOM,(U.S.) Pacific Command
3177	PADD,Personal Access Display Device (as seen in the Star Trek franchise),Petroleum Administration for Defense Districts,used for data collection in the U.S. petroleum industry
3178	PADI,Professional Association of Diving Instructors
3179	PAEK,PolyArylEtherKetone
3180	PAFC,Plymouth Argyle Football Club
3181	PAH,Polycyclic aromatic hydrocarbon
3182	PAHO,Pan American Health Organization
3183	PAI,PolyAmide Imide,Pre-Approval Inspection (pharma)
3184	PAK,Pakistan (ISO 3166 trigram)
3185	Pakistan,Punjab,Afghan states,Kashmir,sIndh,baluchiSTAN
3186	PAL,Phase Alternating Line (TV standard),Philippine Airlines
3187	PAM, Precision Attack Missile
3188	PAMELA,Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics,Pedestrian Accessibility and Movement Environment Laboratory
3189	Pamida,Patrick,Michael,and David,sons of the department store chain's co-founder Jim Witherspoon
3190	PANS,Pretty Advanced/Awesome Network Services (cf. POTS)
3191	PAR,Paraguay (IOC and FIFA trigram,but not ISO 3166)
3192	PARC,Palo Alto Research Center
3193	PAROS,Prevention of an Arms Race in Outer Space (treaty)
3194	PARP,(NATO Partnership for Peace) Planning And Review Process
3195	PARWIG,Power Augmented Ram Wing In Ground (aeroplane wing shape)
3196	PAS,See entry
3197	PASA,PolyAmide,Semi-Aromatic (Nylon)
3198	PASGT,Personnel Armor System,Ground Troops
3199	PASR,Personnel Accounting and Strength Reporting
3200	PATH,Port Authority Trans-Hudson
3201	PAWS,Phased Array Warning System,Progressive Animal Welfare Society
3202	PAYD,Pay As You Drive
3203	PAYE,Pay As You Earn
3204	Pb,Lead (Latin Plumbum)
3205	PB,PolyButylene
3206	PBA,Philippine Basketball Association,Professional Bowlers Association
3207	PBB,PolyBrominated Biphenyl
3208	PBCK,Problem Between Chair and Keyboard (computer help desk in-joke)
3209	PBD,PolyButaDiene
3210	PBDE,PolyBrominated Diphenyl Ether
3211	PBI,PolyBenzImidazole
3212	PBN,PolyButylene Naphthalate
3213	PBOH,Please Become Old History
3214	PBR,Pabst Blue Ribbon (beer brand),Professional Bull Riders
3215	PBRT,may stand for: Physically Based Raytracing,an open source software rendering system for physically correct image synthesis.
3216	PBS,Pharmaceutical Benefits Scheme (Australia),Public Broadcasting Service (U.S.),Public Broadcasting Services (Malta)
3217	PBT,PolyButylene Terephthalate
3218	PBX,Private Branch eXchange (company phone system)
3219	pC,picocoulomb
3220	PCAS,Planet-Crossing Asteroid Survey
3221	PCB,see entry
3222	PCC,NATO Partnership Coordination Cell,Posterior Cingulate Cortex,Pre-Command Course,Presidents Conference Committee
3223	PCCB,Porsche Ceramic Composite Brake
3224	PCCIP,President's Commission on Critical Infrastructure Protection
3225	PCE,PerChlorEthylene
3226	PCI,U.S. Pacific Islands Trust Territory (ISO 3166 trigram; obsolete 1986),Peripheral Component Interconnect (computer bus)
3227	PCIe,Peripheral Component Interconnect Express (computer bus)
3228	PCL,Passive Coherent Location
3229	PCMCIA,Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
3230	PCN,Pitcairn Islands (ISO 3166 trigram)
3231	PCP,phencyclidine,Pneumocystis jiroveci pneumonia (formerly Pneumocystis carinii),Probabilistically Checkable Proof
3232	PCPI,Physician Consortium for Performance Improvement (AMA)
3233	PCR,Polymerase chain reaction
3234	PCSSD,Pulaski County Special School District
3235	PCT,Pacific Crest Trail,Patent Cooperation Treaty
3236	PCTE,Portable Common Tool Environment,Punjab College of Technical Education
3237	PCZ,Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
3238	Pd,Palladium
3239	PD,per diem (Latin: (calculated) by the day),Point of Departure,Police Department,Postal District,Potential Difference,Principal Deputy,Public Domain,Privatdozent
3240	PD,Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
3241	PDA,Personal Digital Assistant,Predicted Drift Angle,Public Display of Affection,Push-Down Automaton
3242	PDD,Past Due Date,Presidential Decision Directive
3243	PDF,Panama[nian] Defense Forces (abolished 1990),Portable Document Format,Principal Direction of Fire
3244	PDG,President Director General,Product Development Group
3245	PDL,Pure Dumb Luck (Texan punk band)
3246	PDN,Pull-Down Network
3247	PDP,Programmable Data Processor,Performance Development Plan
3248	PDQ,Pre-Defined Queries (Siebel packages),Pretty Damn Quick
3249	PDRY,People's Democratic Republic of Yemen (obsolete since 1990)
3250	PDT,Pacific Daylight [Saving] Time (UTC-7 hours)
3251	PDU,Police Dog Unit,Power Distribution Unit,Protocol Data Unit
3252	PE,Ice Pellets (old style METAR Code),Peru (ISO 3166 and FIPS 10-4 country code digram),Physical Education,Premature Ejaculation,Prince Edward Island (postal code),Price to Earning ratio (used for equity shares),Plant Extract
3253	PE,Professional Engineer
3254	PEBCAC,Problem Exists Between Chair and Computer (IT help desk in-joke)
3255	PEBKAC,Problem Exists Between Keyboard and Chair (ditto)
3256	PEEK,PolyEtherEtherKetone
3257	PEET,Partnerships for Enhancing Expertise in Taxonomy
3258	PEI,Prince Edward Island,PolyEtherImide
3259	PEK,PolyEtherKetone
3260	PEPFAR,President's Emergency Plan For AIDS Relief
3261	PER,Peru (ISO 3166 trigram)
3262	perl,usually lower case Practical Extraction and Report Language
3263	PES,PolyEtherSulfone
3264	PEST,UK Public Engagement with Science and Technology
3265	PET, Personal Electronic Transactor,Pierre Elliott Trudeau,Positron Emission Tomography (as in PET scan),PolyEthylene Terephthalate (plastic),Preliminary English Test
3266	PETA, pentaerythritol triacrylate,People Eating Tasty Animals,People for the Ethical Treatment of Animals
3267	petawatt-
3268	PETE,PolyEthyleneTErephthalate
3269	PETP,PolyEthyleneTerePhthalate
3270	PF,French Polynesia (ISO 3166 digram),petafarad,Phenol Formaldehyde (resin),Power forward,a player position in Australian rules football,basketball,and ice hockey
3271	pF,picofarad
3272	PFD,Permanent Fund Dividend = personal flotation device
3273	PFE,Permanent Forest Estate
3274	PFO,Pissed,Fell Over (medical diagnosis in-joke)
3275	PfP,Partnership for Peace
3276	PG -
3277	Pg,petagram
3278	pg,picogram
3279	PGCE,Postgraduate Certificate in Education
3280	PGD,Pre-implantation Genetic Diagnosis
3281	PGENI,Pharmaco-Genetics for Every Nation Initiative
3282	PGH,Pre-implantation Genetic Haplotyping
3283	PGM,Precision-Guided Munition
3284	PGP,Pretty Good Privacy
3285	pH,parts of hydrogen (acidity/alkalinity index),picohenry
3286	PH,Passive Homing (missile guidance system),petahenry,Philippines (ISO 3166 digram),Probability of Hit,Public Health,Purple Heart
3287	PHA,PolyHydroxyAlkanoate,Potentially Hazardous Asteroid
3288	PHL,Philippines (ISO 3166 trigram)
3289	PHQ,Patient Health Questionnaire
3290	Pi,Pebi
3291	PI,PolyImide,PolyIsoprene,Private Investigator
3292	PIB,PolyIsoButylene
3293	PIC,Person In Charge
3294	PICNIC,Problem In Chair Not In Computer
3295	PICS,Private Investment Capital Subscription
3296	PID,Pelvic Inflammatory Disease,Plan Identification Number,Positive Identification,Procedural Identification,Procurement Identification Description
3297	PIF, Partners in Flight
3298	PIG,Pipeline Inspection Gauge
3299	PIM, Parameterized Ionospheric Model,Path of Intended Motion,Pediatric Index of Mortality,Personal Information Manager/Management,Presence and Interworking Mobility,Processor-In-Memory,Program Integration Manager,Protocol Independent Multicast
3300	PIN,Personal Identification Number
3301	PINF,People In Need Foundation (Czech charitable organisation)
3302	PIPA, Program on International Policy Attitudes
3303	PIR,Priority Intelligence Requirement
3304	PIRA,Provisional Irish Republican Army
3305	PIREPS,Pilot Reports
3306	PITA,Pain In The Ass
3307	PJ,petajoule
3308	pJ,picojoule
3309	PJHQ,Permanent Joint Headquarters
3310	PKA,Previously Known As,Professionally Known As
3311	PKE,Partnership of Kindermusik Educators [1] &[2] & [2]
3312	PKI,Public Key Infrastructure (cryptography)
3313	PKU,Phenylketonuria
3314	PL,Ice Pellets (new style METAR Code),petalitre,Phase Line (Co-ordination Line),Poland (ISO 3166 and FIPS 10-4 country code digram)
3315	pL,picolitre
3316	PLAF, People's Liberation Armed Forces,Pluggable look and feel,Product Line Architecture Framework
3317	PLAID,Precision Location and Identification
3318	PLB,Personal Locator Beacon
3319	PLC,Public Limited Company (British)
3320	PLCC,Plastic Leaded Chip Carrier (electronics)
3321	PLD,Probable Line of Deployment
3322	PLEBS,People Lacking Everyday Basic Skills
3323	PLF,Parachute Landing Fall
3324	PLI,Position Location Information,Private Lands Initiative,Professional Liability Insurance
3325	PLIF,Planar Laser-Induced Fluorescence
3326	PLL,Phase-Locked Loop (electronics)
3327	PLM,Polarized Light Microscope/Microscopy
3328	PLMBA,Phospholipid Bilayer Microarray
3329	Pln,Platoon
3330	PLO,Palestine Liberation Organization
3331	PLOKTA,Press Lots Of Keys To Abort
3332	PLP,Platonic Life Partner
3333	PLS,Palletized Loading System,Personal Locator System
3334	PLUTO,Pipe Line Under The Ocean
3335	PLW,Palau (ISO 3166 trigram)
3336	Pm,petametre,Promethium
3337	pm,picometre
3338	PMC,Primary Motor Cortex
3339	PMI,Positive Material Identification
3340	PMID,PubMed Identifier
3341	PMMA,PolyMethylMethAcrylate
3342	PMS,Premenstrual Syndrome
3343	PMSL,Piss Myself Laughing (Internet shorthand)
3344	PMT,Premenstrual Tension (UK) (see Premenstrual Syndrome)
3345	PN,petanewton,Pitcairn Islands (ISO 3166 diagram)
3346	pN,piconewton
3347	PNAC,Project for the New American Century
3348	PNC,Palestinian National Council,Palmerston North City (cf. PNC,a New Zealand rapper from this city),Pittsburgh National Corporation,one of the two companies that merged into today's PNC Financial Services,Provident National Corporation,the other company that merged into PNC Financial Services
3349	PNG,Papua New Guinea (ISO 3166 trigram),Portable Network Graphics
3350	PNP,Partido Nuevo Progresista,Plug 'N' Play/Pray,Positive Negative Positive
3351	PNVS,Pilot Night Vision Sensor
3352	Po,Polonium
3353	PO,Post Office
3354	PO,Purchase Order
3355	POCD,Post-Operative Cognitive Dysfunction
3356	POD,Payable on Death (banking term,and the full name of American metal band P.O.D.),Point of divergence (alternate or counterfactual history),Port of Debarkation
3357	pod,Plain Old Documentation
3358	POE,Perl Object Environment,(b) Port Of Embarkation (c) Polyol Ester (d) Power Over Ethernet
3359	POETS,Portable Occultation,Eclipse,and Transit electronic-camera System
3360	POFF,Plain Old Flat File
3361	POG,Passionfruit,Orange and Guava
3362	POGO,Project On Government Oversight
3363	POI,Program Of Instruction
3364	POK, Plane Of Knowledge
3365	POL,Petroleum,Oils and Lubricants,Poland (ISO 3166 trigram)
3366	POLAD,Political Advice
3367	POM,Program Objective Memorandum,PolyOxyMethylene
3368	POMDP,Partially observable Markov decision process
3369	PooS,Poo Sniffer (Internet shorthand)
3370	POP- Point of Presence,Post Office Protocol,Progesterone Only Pill
3371	POR,Portugal (FIFA and IOC trigram,but not ISO 3166),Proposed Operational Requirement
3372	POS- Point Of Sale terminal (retail industry transaction computers),Piece Of S**t
3373	POSH,Port Outbound Starboard Home (alleged)
3374	POSSLQ,Person of the Opposite Sex Sharing Living Quarters
3375	POT, Plane Of Tranquility
3376	POTS,Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3377	POV,Point of view
3378	POW,Prisoner of war
3379	PPA,Parahippocampal Place Area,PolyPhthalAmide
3380	PPASC,(U.S.) Plans and Program Analysis Support Center
3381	PPCLI,Princess Patricia's Canadian Light Infantry (regiment)
3382	PPG,Pittsburgh Plate Glass (the original name of the company now known as PPG Industries),The Powerpuff Girls
3383	PPLI,Precise Participant Location & Identification
3384	PPM,Project Planning and Management
3385	PPO,PolyPhenylene Oxide
3386	PPP,Point-to-Point Protocol,Purchasing Power Parity
3387	PPQ,Pulses Per Quarter (used in music programming,sequencers)
3388	PPQN,Pulses Per Quarter Note (ditto)
3389	PPQT,Pre-Production Qualification Test
3390	PPS,post postscriptum,Precise/Precision Positioning Service (GPS),PolyPhenylene Sulfide
3391	PPV,Pay-per-view
3392	PQ,Province of Québec (obsolete postal code,replaced by QC),Parti Québécois,PR[edit]
3393	PR,Public Relations
3394	Prb,Presbyter
3395	PRBO,Point Reyes Bird Observatory
3396	PRC,People's Republic of China
3397	PRD,CERDEC Product Realization Directorate
3398	PRFG,Partial Fog (METAR Code)
3399	PRI,Puerto Rico (ISO 3166 trigram)
3400	PRK,Democratic People's Republic of Korea (ISO 3166 trigram)
3401	PRM,Personnel iness Management
3402	PRT,Portugal (ISO 3166 trigram),Provincial Reconstruction Team
3403	PRY,Paraguay (ISO 3166 trigram)
3404	Ps,petasecond
3405	pS,picosiemens
3406	PSA,Paralysis Society of America,Pharmaceutical Society of Australia,Pressure-Sensitive Adhesive,Production Services Association,Prostate Specific Antigen,Public Service Announcement,Public Service Association
3407	PSC,Personal service corporation,Primary Somatosensory Cortex
3408	PSE,Palestinian Territory,Occupied (ISO 3166 trigram)
3409	PSG,Pacific Seabird Group
3410	PSI, Portable Source Initiative
3411	PSI,Pounds per square inch
3412	PSO,Peace Support Operations,Primary Standardisation Office (ABCA),Protocol Supporting Organization (of the ICANN)
3413	PSS,Personnel System Support
3414	PST,Pacific Standard Time (UTC-8 hours)
3415	PSU,Pennsylvania State University
3416	PsyOp,Psychological Operations
3417	PT,petatesla,Physical Training (in the Army),Portugal (ISO 3166 digram)
3418	pT,picotesla
3419	Pt,Platinum
3420	PTA,Parent-Teacher Association
3421	PTAL,Public Transport Accessibility Level
3422	PTAN -
3423	PTES,People's Trust for Endangered Species
3424	PTFE,PolyTetraFluoroEthylene
3425	PTI,Pardon the Interruption
3426	PTL,Patrol,Primary Target Line
3427	PTO,Patent and Trademark Office,Please Turn Over
3428	PTSD,Post-Traumatic Stress Disorder
3429	PU,Guinea-Bissau (FIPS 10-4 country code),Polyurethane,United States Miscellaneous Pacific Islands (ISO 3166 digram; obsolete 1986)
3430	Pu,Plutonium
3431	Pub,Publication
3432	PUG, PET Users Group
3433	PUN, Pull-Up Network
3434	PUP, Pull-Up Point
3435	PUR,Puerto Rico (IOC and FIFA trigram,but not ISO 3166)
3436	PUS,United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3437	PV,petavolt
3438	pV,picovolt
3439	PVC,Permanent Virtual Circuit,PolyVinyl Chloride,Premature Ventricular Contraction,Primary Visual Cortex
3440	PvE,Player versus Environment
3441	PvP,Player versus Player
3442	PVR,Personal Video Recorder
3443	PvZ,Plants vs. Zombies
3444	PW,Palau (postal symbol; ISO 3166 digram)
3445	pW,picowatt
3446	PWA,Pirates With Attitude
3447	PWBA,Pension and Welfare Benefits Administration
3448	PWC,PieceWise Constant (describing a mathematical function)
3449	PwC,PricewaterhouseCoopers (international accounting firm)
3450	PWL,PieceWise Linear (describing a mathematical function)
3451	PWLC,PieceWise Linear and Concave/Convex (describing a mathematical function)
3452	PWR,Pressurized Water Reactor
3453	PWV,Pretoria-Witwatersrand-Vereeniging,the original name for the South African province now known as Gauteng,and still used to refer to the metropolitan agglomeration at the core of the province
3454	PX,Post eXchange
3455	PY,Paraguay (ISO 3166 digram),Person-Year,Portsmouth yardstick
3456	PYF,French Polynesia (ISO 3166 trigram)
3457	PYMWYMI,Put Your Money Where Your Mouth Is
3458	PZ,Panama Canal Zone (ISO 3166 digram; obsolete 1980),Pickup Zone
3459	Q1,First Quarter
3460	Q2,Second Quarter
3461	Q3,Third Quarter
3462	Q4,Fourth Quarter
3463	QA,Qatar (FIPS 10-4 country code; ISO 3166 digram)
3464	Qantas,Queensland And Northern Territory Aerial Services
3465	QAT,Qatar (ISO 3166 trigram)
3466	QB,Quarterback (football)
3467	QC,Quality Control,Québec (postal symbol),Queen's Counsel
3468	QCA,Qualifications and Curriculum Authority,Quality Council of Alberta
3469	QCD,Quantum ChromoDynamics
3470	QDR,Quadrennial Defense Review
3471	QEH,Queen Elizabeth's Hospital
3472	QFE,Quoted For Emphasis,Local ground level atmospheric pressure (aeronautical Q code)
3473	QK,Air Canada Jazz (IATA airline designator)
3474	QLD,Queensland,(Australia) (postal symbol)
3475	QM,Quality Management,Quantum Mechanics,Queen Mother
3476	QNH,Regional mean sea level atmospheric pressure (aeronautical Q code)
3477	QPR,Queens Park Rangers F.C. (English football team),Quality-Price Ratio (wine evaluation term)
3478	QPS,Quark Publishing System
3479	QR,Quake Rally,Qualitative Reasoning,Queensland Rail,Queen's Rangers,Quick Release,Quiet Riot,Qatar Airways (IATA airline designator)
3480	QSCAT,Quick Scatterometer satellite
3481	QSL,Québec Sign Language
3482	QSO,Quasi-Stellar Object
3483	QT,Quentin Tarantino,QuickTime,QuikTrip,QT (cute) Software
3484	Quango,(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3485	Quasar,Quasi-stellar radio source
3486	QUB,Queen's University Belfast
3487	QUIET,Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3488	QZ,Awair (IATA airline designator)
3489	R,Reinforcing,Right,Röntgen,Restricted (movie rating)
3490	R2I,Resistance to Interrogation
3491	R3P,Rearm,Refuel,and Resupply Point
3492	RA,Radio Australia
3493	Ra,Radium
3494	RA,Rain (METAR Code),Rear Area,Reinforced Alert,Republican Army,Right Ascension,Royal Artillery (UK),Royal Academy
3495	RAA,Royal Automobile Association,South Australia,Rear Assembly Area
3496	RAAF,Royal Australian Air Force
3497	Rabobank,Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3498	RAC,Royal Automobile Club (in the United Kingdom,renamed RAC plc in 2002)
3499	RACK,Risk Aware Consensual Kink (SM phrase)
3500	Racon,RAdar beaCON
3501	RADA,Royal Academy of Dramatic Art
3502	Radar,Radio Detection And Ranging
3503	RadB,Rad51/Dmc1 homologous protein
3504	RADB,Real America Database,Resource Assessment Database,Reunion Address DataBase,Rice Allelopathy Data Base,Routing Arbiter Database
3505	RADb,Routing Assets Data Base
3506	RADC,Region Air Defence Commander
3507	RAE,UK Royal Aircraft Establishment (-1991)
3508	RAF,Red Army Faction,Royal Air Force
3509	RAG,Raising and Giving,Rocket Antitank Grenade
3510	RAGBRAI,Register's Annual Great Bicycle Ride Across Iowa
3511	RAM,Rolling Airframe Missile,
3512	RAM,Royal Air Maroc
3513	Ramark,RAdar MARKer
3514	RAOC,Rear Area Operation Centre
3515	RAP, Radio Access Point,Radiological Assistance Program (U.S. Department of Energy),Rear Area Protection,Recognised [Operating/Operational] Air Picture,Recurring Advance Payment,Relational Associative Processor,Reliable Acoustic Path,Rocket-Assisted Projectile,Rule Against Perpetuities
3516	RARDE,UK Royal Armament Research and Development Establishment (1962-1991)
3517	RARE,Rapid Acquisition with Relaxation Enhancement (MRI technique)
3518	RASC,Royal Army Service Corp,Former corps of British Army
3519	RATELO,Radiotelephone Operator
3520	Rb,Rubidium
3521	RB,Running Back (football)
3522	RBAR,Row By Agonizing Row,a derogatory way of describing a technique of scanning a set of records in a database to update or examine the contents of each one. This is the technique of last resort in most cases,since most database operations are optimized when using set based analysis instead of the RBAR method.
3523	RBI,Runs Batted In
3524	RC,see entry
3525	RCA,Radio Corporation of America,Root Cause Analysis,Royal Canadian Artillery,Royal City Avenue (famous entertainment zone in Thailand)
3526	RCAF,Royal Canadian Air Force
3527	RCC,Rescue Co-ordination Centre
3528	RCCO,Royal Canadian College of Organists
3529	RCHA,Royal Canadian Horse Artillery (regiment)
3530	RCMP,Royal Canadian Mounted Police
3531	RCS,Radar Cross-Section,Reaction Control System,Revision Control System
3532	RD,Radio Disney
3533	RDA,Research,Development,and Acquisition,Recommended Daily Allowance (Nutrition)
3534	RDD,Radiological Dispersion Device
3535	RDECOM,(U.S. Army) Research,Development and Engineering Command
3536	RDM,Remotely Delivered/Deliverable Mine
3537	RDO,Rapid,Decisive Operation,Regular Day Off,Remote Data Objects
3538	RDT,Remote Digital Terminal
3539	RDV,Remote Detection Vehicle
3540	Re,Rhenium
3541	RE,Royal Engineers
3542	REACH,Registration,Evaluation,Authorisation and Restriction of Chemical Substances
3543	REACT,Remote Electronically Activated Control Technology
3544	REAM,Retired Educators Association of Minnesota
3545	RECCE,Reconnaissance
3546	REEF,Reef Environmental Education Foundation
3547	REME,Royal Electrical and Mechanical Engineers
3548	RERC,Rehabilitation Engineering Research Center
3549	RES,Radiation Exposure Status,Reserve
3550	RESNA,Rehabilitation Engineering and Assistive Technology Society of North America
3551	REU,Réunion (ISO 3166 trigram)
3552	RF,Radio Frequency,Receptive Field (neurophysiology)
3553	Rf,Rutherfordium
3554	RFC,Request for Comments,Royal Flying Corps (WWI precursor to RAF)
3555	RFD,Request for Documentation
3556	RFE,Request for Evaluation
3557	RFEF,Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3558	RFF,Right of First Refusal (legal term)
3559	RFI,y For Inspection,y For Issue,Request For Information,Radio Frequency Interference
3560	RFID,Radio Frequency IDentification
3561	RFL,Rugby Football League
3562	RFP,Request for Proposal
3563	RFQ,Request for Quotation
3564	RFT,Request for Tender
3565	RFU,Rugby Football Union
3566	RG,Republican Guard
3567	Rg,Roentgenium
3568	RGB,Red Green Blue (colour model)
3569	RGBI,Red Green Blue Intensity (ditto)
3570	Rh,Rhodium
3571	RH,Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3572	RHIC,Relativistic Heavy Ion Collider
3573	RHLI,Royal Hamilton Light Infantry (Canadian militia regiment)
3574	RHO,Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3575	RHS,Right Hand Side,Redland High School,Royal Horticultural Society,London
3576	RHU,Replacement Holding Unit
3577	RI,Rex et Imperator,Regina et Imperatrix King-Emperor
3578	RI,Rhode Island (postal symbol)
3579	RIAA,Recording Industry Association of America
3580	RIBA,Royal Institute of British Architects
3581	RIF,Reduction In Force (layoffs),Resistance Index for Frostbite,ing Is Fundamental
3582	RIFA,Red imported fire ant
3583	RILA,Retail Industry Leaders Association
3584	RIM,Remote integrated multiplexer,Australian term for a digital loop carrier,Research In Motion,former name of the BlackBerry company,Revolutionary Internationalist Movement (Maoist organization),Royal Indian Marine,former navy of British colonial India
3585	RIMVS,Retinal Imaging Machine Vision System
3586	RINO,Republican In Name Only[1]
3587	RISC,Reduced Instruction Set Computer
3588	RISTA,Reconnaissance,Intelligence,Surveillance,and Target Acquisition (see also ISTAR)
3589	RJD,Reduced Julian Day
3590	RKBA,Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3591	RKI,Robert Koch Institute,German governmental research institute in Berlin
3592	RKO,Radio-Keith-Orpheum Pictures
3593	RL,Release Line,Real Life
3594	RLP,Recognised [Operating/Operational] Land Picture
3595	RLS,Restless Leg Syndrome
3596	RLY,Rally Point
3597	RM,see separate disambiguation page
3598	RMC,Robert Menzies College
3599	RMDA,Records Management and Declassification Agency
3600	RMP,Recognised [Operating/Operational] Maritime Picture
3601	RMS,Rate-Monotonic Scheduling,Richard M. Stallman,Root-Mean-Square,Royal Mail Ship (e.g. RMS Titanic)
3602	RN,Radio Netherlands
3603	Rn,Radon
3604	RN,Royal Navy,Registered Nurse (US)
3605	RNA,RiboNucleic Acid
3606	RNAD,Royal Naval Armaments Depot (UK)
3607	RNPS,Radio Network Planning System
3608	RNZ,Radio New Zealand
3609	RNZI,Radio New Zealand International
3610	RO,Range Only,Red Orchestra,Romania (ISO 3166 and FIPS 10-4 country code digram)
3611	ROA, Rate Of Ascent
3612	ROC,Receiver Operating Characteristic (statistics),Regional Operations Centre,Republic Of China,Roc-A-Fella Records,Regional Organisations of Councils
3613	ROD, Rate Of Descent,Record Of Decisions,Report Of Discrepancy
3614	ROE,Rules Of Engagement
3615	ROFLOL,Rolling On the Floor Laughing Out Loud
3616	ROH,Ring of Honor
3617	ROI,Return On Investment,Republic of Ireland.
3618	ROK, Republic of Korea
3619	ROM,-Only Memory,Refuel On the Move,Royal Ontario Museum
3620	ROP,Render Output Pipeline
3621	ROPE,Research Opportunity and Performance Evidence
3622	ROS,Reactive Oxygen Species
3623	ROU,Romania (ISO 3166 trigram)
3624	ROV,Remotely Operated Vehicle
3625	ROW,Right Of Way,Rest Of the World
3626	ROZ, Restricted Operations Zone
3627	RP,Philippines (FIPS 10-4 country code),Release Point,Role-Playing [relationship potential]
3628	RPA,Regional Plan Association
3629	RPD,Recognition-Primed Decision-making
3630	RPF,Rwandan Patriotic Front
3631	RPG,(US-CA) Regional Planning Group,Report Program Generator,Rocket Projectile Gun,Rocket-Propelled Grenade,Role-Playing Game
3632	RPL,Reverse Polish Lisp
3633	RPM,Records,Promotion,Music (expansion of the title of a former Canadian music magazine),Red Hat Package Manager
3634	rpm,revolutions per minute
3635	RPN,reverse Polish notation
3636	rps,revolutions per second
3637	RPV,Remotely Piloted Vehicle
3638	RQ,Puerto Rico (FIPS 10-4 territory code)
3639	RRB,Railroad Retirement Board
3640	RRN,Recurrence Rate Number
3641	RRP,Recurrent Respiratory Papillomatosis
3642	RRS,Racing Rules of Sailing
3643	RRSP,Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3644	RS,Russia (FIPS 10-4 country code)
3645	RSA,Regimental Support Area,Republic of South Africa,Rivest-Shamir-Adleman encryption,South Africa (IOC and FIFA trigram,but not ISO 3166)
3646	RSI,Repetitive Strain Injury
3647	RSJ,Rolled Steel Joist (construction)
3648	RSN,Real Soon Now (coined by author Jerry Pournelle)
3649	RSPB,(UK) Royal Society for the Protection of Birds
3650	RSPCA,Royal Society for the Prevention of Cruelty to Animals
3651	RSR,Required Supply Rate
3652	RSRE,UK Royal Signals and Radar Establishment (1976-1991)
3653	RSRI,Red Sands Research Institute
3654	RSS,Really Simple Syndication
3655	RSTA,Reconnaissance,Surveillance,and Target Acquisition
3656	RT,Real Time,Radio Telephone,Return to duty
3657	RTA,Road traffic accident (British)
3658	RTBF,Radio-Télévision belge de la Communauté française
3659	RTCA,RTCA,Inc.
3660	RTF,Rich Text Format
3661	RTFM, the Fucking/Fine Manual
3662	RTG,Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3663	RTGS,Royal Thai General System of Transcription,Real Time Gross Settlement
3664	RTI,Run-Time Infrastructure (Simulation)
3665	RTL,see entry
3666	RTLS,Return to Launch Site,period in NASA Space Shuttle assent profile where,during assent,shuttle aborts assent and turns and glides back to landing strip at launch site
3667	RTP,Real-time Transport Protocol
3668	RTS,see entry
3669	RTT,Round Trip Timing
3670	RTV,Rapid Terrain Visualization ACTD,Retro Television Network
3671	RU,Russia (ISO 3166 digram)
3672	Ru,Ruthenium
3673	RUC,Royal Ulster Constabulary
3674	RUS,Russia (ISO 3166 trigram)
3675	RUSI,Royal United Services Institute for Defence Studies
3676	RV,Reconnaissance Vehicle,Recreational Vehicle,Re-entry Vehicle,reciprocation void
3677	RW,Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3678	RWA,Rwanda (ISO 3166 trigram)
3679	RWADA,Resident Weighted Average Daily Attendance (New York State term used in public education to indicate the size of a school district,i.e. its number of students)
3680	RWH,Rain Water Harvesting
3681	RWR,Radar Warning Receiver
3682	RWS,Remote Weapon Station
3683	RX,Receive
3684	SA,Sand (METAR Code),Saudi Arabia (ISO 3166 and FIPS 10-4 country code digram),Sexaholics Anonymous,sine anno (Latin,“without year”),Situational awareness,South Africa,(i/s) South Australia (postal symbol),Standards Australia,Sturmabteilung (German,“Storm Detachment”,Nazi forerunner and rival of SS),S.A.,designation for a corporation in many European countries; see article for meanings
3685	SAA,Saudi Arabian Airlines,former name of Saudia,Sex Addicts Anonymous,South African Airways,Southern Athletic Association,Standards Association of Australia,a former name of Standards Australia,SAAB — Svenska Aeroplan AB (Swedish aircraft manufacturer; also refers to its former auto manufacturing arm),SAAFR — Standard use Army Aircraft Flight Route (“safer”),SAAMI — Sporting Arms and Ammunition Manufacturers' Institute (“sammy”),SAARC — South Asian Association for Regional Cooperation,SAB — Soprano Alto Baritone,Sabena — Société anonyme belge d'exploitation de la navigation aérienne (French for “Belgian Company for Exploiting Aerial Navigation”,1923-2001),SABIC — Saudi Basic Industries Corporation,SABR — Society for American Baseball Research
3686	SAC,Standards Activity Committee (of SISO),U.S. Strategic Air Command (1946-1992),SACAT — Semi Attended Customer Activated Terminal (Supermarket checkout),SACEUR — Supreme Allied Commander EURope,SACLANT — Supreme Allied Commander atLANTic,SACLOS — Semi-Automatic Command to Line of Sight
3687	SAD,Seasonal Affective Disorder,Situational Awareness Display,SADD — originally Students Against Drunk Driving,now Students Against Destructive Decisions (U.S. national school-related group)
3688	SADL,Situation Awareness Data Link (“saddle”),Structural Architecture Description Language
3689	SALT- Save A Life Today (SALT) Alert; Emergency Contact System,Southern African Large Telescope,Strategic Arms Limitation s
3690	SAM,Sequential-Access Memory,Sociedad Aeronáutica de Medellín,Surface-to-Air Missile
3691	SARA,Southeastern Association for Research in Astronomy,Scientific Atlanta Resident Application,Scottish Amateur Rowing Association,Southern African Railway Association,State Administration for Religious Affairs,SARP — Search And Rescue Processor,SARR — (i/a) Search And Rescue Repeater,SARS — Severe Acute Respiratory Syndrome
3692	SART,Search and Rescue Transponder,Situational Awareness Rating Technique,SARU — South African Rugby Union
3693	SAS,Scandinavian Airlines System,Second Avenue Subway,Situational Awareness System,Special Air Service,Studies,Analysis and Simulation,Side Angle Side,Statistical Analysis System (original meaning; SAS Institute Inc. has evolved far beyond that scope),SASE — Self-Addressed Stamped Envelope,SASO — Stability and Support Operations,SASOL — Suid Afrikaanse Steenkool en Oli.e. (Afrikaans,“South African Coal and Oil”)
3694	SAT,formerly Scholastic Aptitude Test and Scholastic Assessment Test; now known solely by the initials,Small Arms Trainer,SATB — Soprano Alto Tenor Bass,SATNAV — Satellite Navigation (Increasingly common GPS based system in new vehicles),SATs — Standard Assessment Tasks and other similar terms describing tests used in English schools; see National Curriculum assessment#Terminology,SAU — Saudi Arabia (ISO 3166 trigram),SAVAK — Sazamane Etelaat va Amniate Kechvar (Iranian “Security and Intelligence Service”)
3695	SAW,Squad Automatic Weapon,Surface acoustic wave,SAWE — Society of Allied Weight Engineers,SB[edit],Sb — Antimony (Latin Stibium)
3696	SB,Sexy Bitch,Sexy Bastard,Sexy Boy (disambiguation),Solomon Islands (ISO 3166 digram),Special Warfare Boat Operator
3697	SBA,Santa Barbara Airport,Simulation-Based Acquisition,Sovereign Base Area,Student bar association,SBB — German for the Swiss Federal Railways
3698	SBNO,Standing but not operating (in reference to amusement parks)
3699	SBS,Special Boat Service,Special Broadcasting Service,Seoul Broadcasting System
3700	SC,Cruiser Submarine (US Navy hull classification) c Saint Kitts and Nevis (FIPS 10-4 country code; from Saint Christopher),Seychelles (ISO 3166 digram),South Carolina (postal symbol)
3701	SCS,Scan Correlated Shift,Soil Conservation Service
3702	SD,Secure Digital (memory card format),Sheriff's department,Smoke/Decontamination,South Dakota (postal symbol),Sudan (ISO 3166 digram)
3703	SDHC,Secure Digital High Capacity
3704	SDXC,Secure Digital eXtended Capacity
3705	SEM,Sensor Employment Manager,Switch to Email Mode,i.e. stop texting as it is more disruptive by making a sound or vibrating and email instead,for a given time
3706	SEN,Senegal (ISO 3166 trigram),Small Extension Node
3707	SEP,Somebody Else’s Problem,Spherical Error Probable,System Enhancement Package,System Engineering Plan,SEPTA — Southeastern Pennsylvania Rapid-Transit Authority,SERE — Survival,Evasion,Resistance and Escape,SESSPE — Submarine Escape and Surface Survival Personnel Equipment,SET — Staphylococcal EnteroToxin,SETI — Search for ExtraTerrestrial Intelligence,SETAC — Society for Environmental Toxicology and Chemistry
3708	SEU,Single Event Upset (solid state physics),Slightly Enriched Uranium,Special Evidence Unit,SF[edit]
3709	SF,Fleet Submarine (retired US Navy hull classification),San Francisco,Science fiction,South Africa (FIPS 10-4 country code),Speculative fiction,Special Forces
3710	SFA,Sales force automation,Saturated fatty acid,Scottish Football Association,Stephen F. Austin (State University),Sudan Football Association
3711	SG,Senegal (FIPS 10-4 country code),Singapore (ISO 3166 digram),Snow Grains (METAR Code),Study Group
3712	SH,Saint Helena (ISO 3166 digram),SONATRACH (Algerian petroleum company)
3713	SHAC,Stop Huntingdon Animal Cruelty,Student Health Action Coalition,SHAPE — Supreme Headquarters Allied Powers Europe,SHF — Super High Frequency,SHN — Saint Helena (ISO 3166 trigram)
3714	SHO,Showtime (see also sho.com)
3715	SI,Slovenia (ISO 3166 and FIPS 10-4 country code digram),Socialist International,Sports Illustrated,Système International (French,International System of Units),SIA — Singapore Airlines (ICAO code),SIA — Survivors of Incest Anonymous,SIAM — Society for Industrial and Applied Mathematics,SIC — Standard Industrial Classification,SICS — Swedish Institute of Computer Science,SIDS — Sudden infant death syndrome,SIDU — select,insert,delete,update. See Create,read,update and delete,SIF — Selective Identification Feature,SIFF — Successor IFF
3716	SIIT,Saskatchewan Indian Institute of Technologies (Canadian university),Sirindhorn International Institute of Technology (Thai university),Stateless IP/ICMP Translation algorithm,SIMAC — Semantic Interaction with Music Audio Contents,SIMLAS — Soldier Integrated Multipurpose Laser System,SIMM — Single In-line Memory Module,SIMNET — SIMulator NETwork,later SIMulation NETwork,SIMNET-D,SIMNET-Developmental,SIMP — Strongly Interacting Massive Particle
3717	SIP,Session Initiation Protocol,State Implementation Plan,System Improvement Program,Systematic Investment Plan,SIPP — Self-Invested Personal Pension
3718	SIRI,Service Interface for Real Time Information
3719	Siri,Speech Interpretation and Recognition Interface (Apple iOS software)
3720	SISO,Simulation Interoperability Standards Organization,Society of Independent Show Organizers,SIW — Simulation Interoperability Workshop,SIYSS — Stockholm International Youth Science Seminar,SJ[edit]
3721	SL,Sierra Leone (ISO 3166 and FIPS 10-4 country code digram),Start Line
3722	SLOC,Sea Lines Of Communication,Source Lines Of Code,SLORC — State Law and Order Restoration Council (of Burma)
3723	SLP,Sea Level Pressure,Super Long Play,slph — Standard litre per hour (air flow),slpm — Standard litre per minute (air flow),slps — Standard litre per second (air flow),SLR — Single-Lens Reflex (camera)
3724	SME,Scan Mirror Electronics,Subject Matter Expert
3725	SMX-many,including: Server Macro Expansion,Solaris MINIX,Spatial multiplexing,Sulfamethoxazole; see entry
3726	SNL,Saturday Night Live (television),Società Navigazione del Lago di Lugano,SNM — Special Nuclear Material,SNMP — Simple Network Management Protocol,SNOBOL — StriNg Oriented symBOlic Language,SNP — Single-nucleotide polymorphism
3727	SO,Shared Object (Unix),Sheriff's Office,Significant other,Somalia (ISO 3166 and FIPS 10-4 country code digram)
3728	SOA,service-oriented architecture,Society of Actuaries,State of the art
3729	SOAP,Simple Object Access Protocol,Supplemental Offer and Acceptance Program (U.S. medical residency matching)
3730	SOB,Son Of a Bitch,Same Old Bullshit,SOC — Sector Operations Centre,SOCCSKSARGEN — South Cotabato,Cotabato,Sultan Kudarat,Sarangani,General Santos City (a region in the Philippines; pronounced “sock-sar-gen”),SOCOM — (U.S.) Special Operations Command
3731	SoCon,Southern Conference (U.S. college sports)
3732	SOD,School Of Dentistry,Statement Of Difference[s],Statement Of Direction,Statement Of Documentation,Statement Of Duty/Duties
3733	SOE,Secret Of Evermore,Special Operations Executive (WWII British organization),State Of Emissions (EW)
3734	SOF- Special Operations Force,Status of Forces,SOFIA — Stratospheric Observatory For Infrared Astronomy
3735	SOM,Simulation Object Model,Somalia (ISO 3166 trigram),Sonar — SOund Navigation And Ranging
3736	SOP,Standing/Standard Operating Procedure,State of Play
3737	SOR,State Of iness,Statement Of Requirements
3738	Sp,Special,Spring tide (nautical charts),sine prole (Latin,“without offspring”)
3739	SR,Sound Reinforcement,Supply Route,Suriname (ISO 3166 digram),Sveriges Radio (Swedish Radio Ltd),SR — Sustained release of a drug
3740	SRG,SACEUR Rover Group,Special Republican Guard,SRGW — Short-Range Guided Weapon
3741	SSA,Cargo Submarine (US Navy hull classification),Social Security Administration (U.S.),Statistics South Africa,SSB — Single-sideband modulation,SSB — Sacramento Sustainable Business,SSBN — Nuclear-Powered Ballistic Missile Submarine (US Navy hull classification)
3742	SSC,Safe,Sane,Consensual (SM phrase),Secondary Somatosensory Cortex,Smaller-Scale Contingency,U.S. Army Soldiers System Center (Natick,Massachusetts),Superconducting Super Collider,SSCCATAGAPP — Singles,Seniors,Childless Couples,And Teens And Gays Against Parasitic Parents (fictional organization from The Simpsons)
3743	SSD,Solid-state drive,South Sudan (ISO 3166 trigram),SSDC — U.S. Space and Strategic Defense Command
3744	SSDD,Same Shit,Different Day,Single-Sided Double-Density (floppy disk)
3745	SSE,South South-East,Streaming SIMD Extensions,SSG — Guided Missile Submarine (retired US Navy hull classification),SSGN — Nuclear-Powered Guided Missile Submarine (US Navy hull classification),SSH — Saffir-Simpson Hurricane scale,SSK — Hunter-Killer Submarine (retired US Navy hull classification),SSKP — Single-Shot Kill Probability,SSL — Secure Sockets Layer,SSM — Surface-to-Surface (Guided) Missile
3746	SSN,Nuclear-Powered Attack Submarine (US Navy hull classification),SIM Serial Number,Social Security Number (U.S.),Socialist Solidarity Network,Subsystem number (SCCP,SS7),SSNW — Same Shit,New Wrapping,SSO — Submarine Oiler (retired US Navy hull classification),SSP — Submarine Transport (retired US Navy hull classification)
3747	SSR,Radar Picket Submarine (retired US Navy hull classification),Solid State Recorder
3748	SSRI,Selective Serotonin Reuptake Inhibitor,Social Systems Research Institute
3749	SSRN,Social Science Research Network,Nuclear-Powered Radar Picket Submarine (retired US Navy hull classification)
3750	SSS,Siding Spring Survey,Side Side Side (an acronym for remembering congruent triangles),Sigue Sigue Sputnik (band),S/SSM — Surface-to-Subsurface Missile
3751	ST,Saint Lucia (FIPS 10-4 country code),São Tomé and Príncipe (ISO 3166 digram)
3752	STA,Scheduled Time of Arrival,Surveillance and Target Acquisition,STAG — (U.S.) Strategy and Tactics Group,STAGE — Scenario Toolkit And Generation Environment,STANAG — (NATO) Standardisation Agreement
3753	STAR,Scientific and Technical Aerospace Reports (NASA),Simulation of Tactical Alternative Responses,Special Threat Analysis and Recognition
3754	STAT,Signal Transducers and Activators of Transcription (cell biology),Special Tertiary Admissions Test (Australia)
3755	STB,Surface Transportation Board[2]
3756	STFU,Southern Tenant Farmers Union,Stuff You[citation needed],STH — Sonic The Hedgehog
3757	STI,Sexually Transmitted Infection,Subaru Tecnica International,STK — Satellite Tool Kit,STM — Short Term Memory,STOL — Short Take-Off and Landing,STOVL — Short Take-Off and Vertical Landing
3758	STP,São Tomé and Príncipe (ISO 3166 trigram),Standard Temperature and Pressure,STR — Short Tandem Repeat (DNA analysis),STRATCOM — United States Strategic Command
3759	SU,Soviet Union (ISO 3166 digram; obsolete 1992),Sudan (FIPS 10-4 country code),SUB — Student Union Building,SuD — Subject under Discussion,SUDC — Swedish United Dawah Center,a salafist Islamic organisation in Sweden
3760	SV,El Salvador (ISO 3166 digram),Sportverein (German for “Sport Association”,as in Hamburger SV and SV Werder Bremen),SVC — Secondary Visual Cortex,SvD — Svenska Dagbladet (Swedish newspaper)
3761	SWA,Secure Web Access,South-West Asia
3762	SWAC,Southwestern Athletic Conference
3763	SWALK,Sealed With A Loving Kiss,
3764	SWAN,System for Wearable Audio Navigation
3765	SWAP,Surface Waters Acidification Programme,
3766	SWAPO,South-West Africa People's Organisation,
3767	SWAT,Special Weapons And Tactics
3768	SWE — Sweden (ISO 3166 trigram)
3769	SWF,Single White Female
3770	SWG,Surface Warfare Group,Symbology Working Group,SWHR — Society for Women's Health Research,SWIG — Simplified Wrapper and Interface Generator,SWIR — Short Wave InfraRed (“ss-why-are” or “swhirr”)
3771	SWLABR,She Was Like A Bearded Rainbow,Cream song (Bruce,Clapton and Baker),SWORD — Subjective WORkload Dominance,SWORDS — Special Weapons Observation Reconnaissance Detection System,SWOT — Strengths,Weaknesses,Opportunities,Threats (mnemonic)
3772	SWP,Special Working Party (“swipp”),Systematic Westing Plan (a plan of periodic westing of shares or mutual funds worth a fixed amount of money),Skill With Prizes (UK pub quiz machines — quality titles include: Pub Quiz,Quiz City,Frog in a Liquidizer,Who Wants To Win a Tenner?),SWT — Sea Water Tank,SWV — Sisters With Voices (American female R&B vocal group),SWZ — Swaziland (ISO 3166 trigram),SX[edit],SX — Sonic X
3773	T,Tera,Tesla,Tritium
3774	Ta,Tantalum
3775	TA,Target Acquisition,Teaching Assistant,Tera-ampere,Territorial Army (UK),Tristan da Cunha (ISO 3166 digram)
3776	TAA,Transparency Anti-Aliasing,Trans Australia Airlines
3777	TAACOM,U.S. Theater Army Area Command
3778	TAADCOORD,Theatre Army Air Defence Co-ordinator
3779	TAAR,Trace Amine-Associated Receptor
3780	TAC,U.S. Tactical Air Command (1946-1992)
3781	TACAN,Tactical Air Navigation
3782	TACC,Tactical Air Control Centre,(USAF) Tanker Airlift Control Center
3783	TACCO,Tactical Coordinator
3784	TACCSF,U.S. Theater Aerospace Command & Control Simulation Facility
3785	TACDAR,Tactical Detection And Reporting
3786	TACP,Tactical Air Control Party,Technology Applications Certification Program
3787	TACSOP,Tactical SOP (Standing Operating Procedure)
3788	TADIL,Tactical Digital Information Link
3789	TADSS,Training Aids,Devices,Simulators,and Simulations
3790	TAI,Target[ed] Area of Interest
3791	TAJ,Tom and Jerry
3792	TAJT,Tom and Jerry Tales
3793	TALES,Technical Advice and Lexicon for Enabling Simulation
3794	TAN,Tanzania (IOC and FIFA trigram,but not ISO 3166)
3795	TANJ,There Ain't No Justice (used as expletive in the Ringworld novels)
3796	TANP,Terrain-Aware Network Planner
3797	TANSTAAFL,There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress)
3798	TAPPS,Texas Association of Private and Parochial Schools
3799	TARDIS,Time And Relative Dimension In Space (from Doctor Who)
3800	TARP,Transparency Accountability Rights for Parents (coined by Karen Plumridge,founder of Black Ribbon Gold Heart)
3801	TAS,Tasmania (postal symbol)
3802	TASER,Thomas A. Swift's Electric Rifle
3803	TASM,Tactical Air-to-Surface Missile
3804	TAT,Tourism Authority of Thailand
3805	TATP,TriAcetone TriPeroxide
3806	TATT,Tired All The Time (medical diagnosis in-joke)
3807	Tb,Terbium
3808	TB,Tuberculosis
3809	TBA,to be announced
3810	TBBPA,TetraBromoBisPhenol-A
3811	TBC,to be confirmed,to be continued
3812	TBF,to be fair
3813	TBGRI,Tropical Botanic Garden and Research Institute,India
3814	TBH,To Be Honest
3815	TBL,Turkish Basketball League
3816	TBM,Tactical Ballistic Missile,Theatre Ballistic Missile
3817	TBS,Turner Broadcasting System
3818	TBT,Tributyltin
3819	Tc,Technetium
3820	TC,Teracoulomb,Turks and Caicos (ISO 3166 digram),United Arab Emirates (FIPS 10-4 country code; from Trucial Coast States)
3821	TCA,Transformational Communications Architecture,Turks and Caicos (ISO 3166 trigram)
3822	TCAA,Top Counter-Assault Agents
3823	TCAS,Traffic Collision Avoidance System
3824	TCD,Chad (ISO 3166 trigram)
3825	TCG,Trusted Computing Group,Türkiye Cumhuriyeti Gemisi
3826	TCHD,Truck Cargo Heavy Duty
3827	TCL,Tool Command Language
3828	TCM,Turner Classic Movies
3829	TCP,Traffic Control Point,Transmission Control Protocol,Trichlorophenol
3830	TCU,Texas Christian University
3831	TCW,Tasty Coma Wife
3832	TCWMS,Tele-Center Workforce Management System
3833	TD,Territorial Decoration,Toon Disney,Toronto-Dominion (Bank); see also its U.S. subsidiary,TD Bank,N.A.,Touchdown,Tower Defence A game type,involves defending waves of enemies using tower
3834	TDA,The Disney Afternoon
3835	TDL,Tactical Data Link
3836	TDM,Time-Division Multiplexing
3837	TDMA,Time Division Multiple Access
3838	TDP,Technology Demonstration Programme
3839	TDRS,Tracking Data and Relay Satellite
3840	TE,Tactical Exploitation,Testosterone to Epitestosterone ratio,Tight end (American football; position generally not used in modern Canadian football)
3841	Te,Tellurium
3842	TEAL,Tasman Empire Airways Limited
3843	Team,Together everyone achieves more
3844	TEAMS,The East African Marine System (fiber optic cable)
3845	TED,Technology Entertainment Design prize
3846	TEETH,Tried Everything Else,Try Homeopathy (medical diagnosis in-joke)
3847	TEL, Transporter,Erector and Launcher
3848	TELAR,Transporter,Erector,Launcher And Radar
3849	TENCAP,Tactical Exploitation of National Capabilities
3850	TERS,Tactical Event Reporting System
3851	TES,Tactical Event System
3852	TEST,Thesaurus of Engineering and Scientific Terms
3853	TEU,Twenty-foot equivalent unit (cargo capacity)
3854	TeVeS,Tensor Vector Scalar theory
3855	TF -
3856	TFMPP,Trifluorophenylmethylpiperazine
3857	TFR,Total Fertility Rate
3858	TFT,Thin-Film Transistor
3859	Tg,Teragram
3860	TG,Togo (ISO 3166 digram)
3861	TGA,Tonga (IOC and FIFA trigram,but not ISO 3166)
3862	TGIF,Thank God It's Friday,Toes Go In First
3863	TGO,Togo (ISO 3166 trigram)
3864	TGT,Target (also the ticker symbol for Target Corporation),Ticket Granting Ticket (computer security),Tyrese,Ginuwine,Tank,see TGT (group) for their collaboration
3865	TH,Terahenry,Thailand (ISO 3166 and FIPS 10-4 country code digram)
3866	Th,Thorium
3867	THA,Thailand (ISO 3166 trigram)
3868	THAAD, Terminal High Altitude Area Defence
3869	THEGENTRY,The High-End Group of Earth's New Technologies Research Yield
3870	THEL,Tactical High Energy Laser ACTD
3871	THG,Tetrahydrogestrinone
3872	TI,Tajikistan (FIPS 10-4 country code),Thermal Imaging,Threat Identification,Training Instructor,Texas Instruments
3873	Ti,Tebi,Titanium
3874	TIA,Total Information Awareness initiative
3875	TIA,Transient Ischemic Attack
3876	TIALD,Thermal Imaging and Airborne Laser Designation
3877	TIBS,Tactical Information Broadcast System
3878	TIC,Troops In Contact
3879	TIGERS,Topologically Integrated Geographic Encoding and Referencing System
3880	TIM,Technical Information Memorandum,Technical Interchange Meeting,Toxic Industrial Material,Telecom Italia Mobile
3881	TIMS,Tactical Internet Management System,The Institute of Management Sciences,The International Molinological Society,Thermal Infrared Multispectral Scanner,Thermal Ionization Mass Spectrometry,Travel Information Management Services,Tuberculosis Information Management System
3882	TINC,There Is No Cabal
3883	TINY,That Is,Not You (internet slang)
3884	TIP,Thermal Identification Panel
3885	tits,Toes in the Sand
3886	TJ,Tajikistan (ISO 3166 digram),Terajoule
3887	TJD,Truncated Julian Day
3888	TJK,Tajikistan (ISO 3166 trigram)
3889	TK,Terakelvin,Tokelau (ISO 3166 digram)
3890	TKBL,Türkiye 1. Kadınlar Basketbol Ligi,the Turkish-language name of the Turkish Women's Basketball League
3891	TKL,Tokelau (ISO 3166 trigram)
3892	TKM,Turkmenistan (ISO 3166 trigram)
3893	TL,Team Leader,Teralitre,Timor-Leste (ISO 3166 digram),ThermoLuminescence,TL;DR ,Too long; didn’t read.
3894	Tl,Thallium
3895	TLA,Three-Letter Abbreviation/Acronym
3896	TLAM,Tomahawk Land Attack Missile
3897	TLAR,That Looks About Right (chat shorthand),Transporter-Launcher And Radar
3898	TLATOJL,The Life and Times of Juniper Lee
3899	TLC,Tender Loving Care,The Learning Channel (now known strictly by the initials),Thin Layer Chromatography,T-Boz,Lefteye,Chilli,Tables,Ladders,and Chairs (type of professional wrestling match)
3900	TLD,Thermoluminescent Dosimeter,Top-Level Domain
3901	TLM,Traditional Latin Mass,Tridentine Latin Mass,Transaction Lifecycle Management
3902	TLPM,T1 Line Performance Monitor
3903	TLS,Timor-Leste (ISO 3166 trigram),Times Literary Supplement,TM[edit]
3904	TM,Technical Manual,Theatre Missile,Thematic Mapper,trademark (often written in small superscript type: TM or ™),Turing machine,Turkmenistan (ISO 3166 digram) Tympanic Membrane
3905	Tm,Terametre
3906	TMAP, Texas Medication Algorithm Project
3907	TMC,The Movie Channel
3908	TMD,Theatre Missile Defence
3909	TMDK,The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3910	TMI,Too Much Information
3911	TMJ,TemporoMandibular Joint (syndrome)
3912	TMNT,Teenage Mutant Ninja Turtles
3913	TMO,Table Mountain Observatory,Television match official (rugby union)
3914	TMP,East Timor (ISO 3166 trigram; obsolete 2002),Temporary
3915	TMPG,Transparent Multi-Platform Gateway
3916	TMR,Twin Main Rotors (helicopter type)
3917	TMS,Transcranial Magnetic Stimulation
3918	TMT,Thirty Meter Telescope
3919	TMTOWTDI,There's Than One Way To Do It (from Perl)
3920	TN,Tennessee (postal symbol),Teranewton,Tonga (FIPS 10-4 country code),Tunisia (ISO 3166 digram)
3921	TNA,Total Nonstop Action Wrestling
3922	TNO,Trans-Neptunian Object
3923	TNT,Thomas Nationwide Transport,an Australian company that was one of the predecessors to the former TNT N.V. and the current TNT Express,TriNitroToluene, Turner Network Television,TO[edit]
3924	TOA,Table Of Authorities,Total Obligation Authority (accounting)
3925	TOAD,Temporary,Obsolete,Abandoned,or Derelict site (urbanism),Towed Optical Assessment Device
3926	TOBS,Time of OBServation
3927	TOGS,Thermal Observation Gunnery Sight
3928	TOMS,Total Ozone Mapping Spectrometer (satellite instrument)
3929	TON,Tonga (ISO 3166 trigram)
3930	TOT,Time On Target
3931	TPE,Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3932	TPI,The point is
3933	TPO,Thrombopoietin
3934	TPS,The Pennington School
3935	TPTB,The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3936	TQ,Top Qualifier (similar to Pole Position in car racing)
3937	TRA,Technology iness Assessment
3938	TRAC,(U.S. Army) TRADOC Analysis Center
3939	TRACON,Terminal Radar Approach Control
3940	TRADOC,(U.S. Army) Training and Doctrine Command
3941	TRAIN,Tourist Railway Association,Inc.
3942	TRANSCOM,U.S. Transportation Command
3943	TRAP,Tactical Receive equipment and related Applications
3944	TRASANA,TRADOC Systems Analysis Agency
3945	TRD,Towed Radar Decoy
3946	TRIGAT,Third Generation Antitank (missile)
3947	TRL,Technology readiness level
3948	TRP,Target Reference Point,Time of Reporting
3949	Trp,Troop
3950	TRU,Transuranic
3951	TRUEX,Training in Urban Environment Exercise
3952	TRW,Thompson Ramo Wooldridge Inc.
3953	Ts,Terasecond
3954	TSEC,Transmission Security Encryption Code
3955	TSL,Transportation Security Laboratory
3956	TSR,Terminate and Stay Resident
3957	TSSIA,The Subject Says It All
3958	TTCT,Torrance Tests of Creative Thinking
3959	TTFN,Ta Ta For Now
3960	TTO,Trinidad and Tobago (ISO 3166 trigram)
3961	TTTEAF,Thomas the Tank Engine and Friends
3962	TTY,TeleTYpewriter (Printer)
3963	TTYL,To You Later (Internet slang)
3964	TTZ,Tetrazolium
3965	TUC,Trades Union Congress
3966	TUG,TeX Users Group
3967	TUN,Tunisia (ISO 3166 trigram)
3968	TUNS,Technical University of Nova Scotia
3969	TUR,Turkey (ISO 3166 trigram)
3970	TUSK,Tank Urban Survival Kit
3971	TUV,Tuvalu (ISO 3166 trigram)
3972	TVA,Tennessee Valley Authority
3973	TVR,TreVor (Wilkinson) Racing
3974	TVS,Tornado vortex signature
3975	TWAIN,Technology Without An Interesting Name
3976	TWE,Trans World Entertainment
3977	TWI,The Welding Institute
3978	TWN,Republic of China (Taiwan) (ISO 3166 trigram)
3979	TWP,Technical Working Paper
3980	TXV,Thermostatic Expansion Valve
3981	TZ,Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3982	TZA,Tanzania (ISO 3166 trigram)
3983	TZC,Tetrazolium chloride
3984	U,Uranium
3985	UA,Ukraine (ISO 3166 digram) Unit of Action
3986	UAAP,University Athletic Association of the Philippines
3987	UAB,University of Alabama at Birmingham
3988	UAE,United Arab Emirates (also IOC and FIFA trigram,but not ISO 3166)
3989	UBIGEO,Ubicación Geografica (Spanish for Geographical Location)
3990	UCBSA,United Cricket Board of South Africa
3991	UCF,University of Central Florida
3992	UCLES,University of Cambridge Local Examinations Syndicate
3993	UCR,University of Costa Rica
3994	UCS,Union of Concerned Scientists
3995	UDAS,Uppsala-DLR Asteroid Survey
3996	UDTS,Uppsala-DLR Trojan Survey
3997	UE,Unit of Employment
3998	UEFA,Union of European Football Associations
3999	UESAC,Uppsala-ESO Survey of Asteroids and Comets
4000	UFC,Ultimate Fighting Championship
4001	UG,Uganda (ISO 3166 and FIPS 10-4 country code digram)
4002	UGA,Uganda (ISO 3166 trigram)
4003	UGV,Unmanned Ground Vehicle
4004	UHF,Ultra High Frequency
4005	UHMW,Ultra-High Molecular Weight
4006	UHRB,Ultra-High Resolution Building (simulation)
4007	UIC,University of Illinois at Chicago
4008	UID,User ID
4009	UIL,University Interscholastic League (governing body for most interscholastic activities,notably sports,in Texas public high schools)
4010	UIUC,University of Illinois at Urbana-Champaign
4011	UJTL,Universal Joint Task List
4012	UK,United Kingdom (also FIPS 10-4 country code),University of Kentucky
4013	UKIP,United Kingdom Independence Party
4014	UKR,Ukraine (ISO 3166 trigram)
4015	UL,Underwriters Laboratories
4016	ULF,Ultra Low Frequency
4017	UM,U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
4018	UMBC,University of Maryland,Baltimore County
4019	UMC,United Microelectronics Corporation,University of Missouri-Columbia
4020	UMCP,Unit Maintenance Collection Point
4021	UMES,University of Maryland Eastern Shore
4022	UMI,U.S. Minor Outlying Islands (ISO 3166 trigram)
4023	UMIST,University of Manchester Institute of Science and Technology
4024	UML,Unified Marxist-Leninist Communist Party of Nepal,Unified Modeling Language,University of Massachusetts Lowell,User-Mode Linux
4025	UMTS,Universal Mobile Telecommunications System
4026	UN,United Nations
4027	UNABOM,University and airline bomber (FBI case name)
4028	UNAIDS,(i/a) Joint United Nations Programme on HIV/AIDS
4029	UNAMSIL,United Nations Mission in Sierra Leone
4030	UNCF,United Negro College Fund
4031	UNCLOS,United Nations Convention on the Law of the Sea
4032	UNCSGN,United Nations Conference on the Standardization of Geographical Names
4033	UNCTAD,United Nations Conference on Trade and Development
4034	UNDCP,United Nations Drug Control Programme
4035	UNDE,(i/a) Union of National Defence Employees (Canada)
4036	UNDP,United Nations Development Programme
4037	UNEP,United Nations Environment Programme
4038	UNESCO,United Nations Educational,Scientific and Cultural Organization
4039	UNFCCC,United Nations Framework Convention on Climate Change
4040	UNFICYP,United Nations Peacekeeping Force in Cyprus
4041	UNGEGN,United Nations Group of Experts on Geographical Names
4042	UNHCR,United Nations High Commission (er) for Refugees
4043	UNICEF,United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
4044	UNICRI,United Nations Interregional Crime and Justice Research Institute
4045	UNIDO,United Nations Industrial Development Organization
4046	UNIFEM,United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
4047	UNIS,University of Surrey,Guildford,England
4048	UNLV,University of Nevada,Las Vegas
4049	UNMIK,United Nations Interim Administration Mission in Kosovo
4050	UNMOVIC,United Nations Monitoring,Verification and Inspection Commission
4051	UNOSOM,United Nations Operations in Somalia
4052	UNPROFOR,United Nations Protection Force (in former Yugoslavia)
4053	UNRISD,United Nations Research Institute for Social Development
4054	UNSM,Union of Nova Scotian Municipalities
4055	UNTAC,United Nations Transitional Authority in Cambodia
4056	UNTAET,(i/a) United Nations Transitional Administration in East Timor
4057	UNU,United Nations University
4058	UP,Ukraine (FIPS 10-4 country code),Union Pacific Railroad (AAR reporting mark),Upper Peninsula (of Michigan),Uttar Pradesh
4059	UPC,United Pentecostal Church,Universal Product Code
4060	UPDM,Uganda People's Democratic Movement,Unified Modeling Language Profile for DoDAF and MoDAF,Unité de psychiatrie du développement mental,Universal Pattern Decomposition Method,Unix Power Device Management,Unpressurized Docking Mast,Urban Planning,Design and Management
4061	UPdM,Università Popolare della Multimedialità
4062	UPI,United Press International
4063	UPN,United Paramount Network
4064	UPS,Uninterruptible Power Supply,United Parcel Service
4065	UPTN,Universal Personal Telecommunications Number,Upper Peninsula Telehealth Network
4066	UPU,Universal Postal Union
4067	UR,Soviet Union (NATO country code,obsolete 1992)
4068	URBSFA,Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
4069	URD,User Requirements Document
4070	URI,Uniform Resource Identifier,University of Rhode Island
4071	URU,Uruguay (IOC and FIFA trigram,but not ISO 3166)
4072	URY,Uruguay (ISO 3166 trigram)
4073	US,United States (also ISO 3166 and FIPS 10-4 country code digram)
4074	USA,United States of America (also ISO 3166 trigram),United States Army
4075	USAADAC,U.S. Army Air Defense Artillery Center,Fort Bliss,Texas
4076	USAARMC,U.S. Army ARMor Center,Fort Knox,Kentucky
4077	USAAVNC,U.S. Army AViatioN Center,Fort Rucker,Alabama
4078	USAF,United States Air Force
4079	USAFSPC,U.S. Air Force Space Command
4080	USAIC,U.S. Army Infantry Center,U.S. Army Intelligence Center
4081	USAID, United States Agency for International Development
4082	USAP,Union Sportive des Arlequins Perpignanais,United States Antarctic Program
4083	USAPATRIOT,Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
4084	USAREUR,United States Army Europe
4085	USB,Universal Serial Bus
4086	USC,United States Code,University of South Carolina,University of Southern California
4087	USCG,United States Coast Guard
4088	USCINCSPACE,United States Commander in Chief,Space Command
4089	USDA,United States Department of Agriculture
4090	USDI,United States Department of the Interior
4091	USDOE,United States Department of Energy
4092	USDRE,(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
4093	USEC,United States Enrichment Corporation
4094	USFL,United States Football League
4095	USFWS,United States Fish and Wildlife Service
4096	USGS,United States Geological Survey
4097	USIA,United States Information Agency
4098	USJFCOM,United States Joint Forces Command
4099	USL,United Soccer League,a third-level U.S. league. Not to be confused with an earlier league of the same name.,United Soccer Leagues,the organization that operates the above league,plus several other lower-level leagues,University of Southwestern Louisiana,a former name for the school now known as the University of Louisiana at Lafayette
4100	USMC,United States Marine Corps
4101	USMNT,United States men's national (soccer) team
4102	USN,United States Navy
4103	USNA,United States National Arboretum,United States Naval Academy
4104	USNB,United States Naval Base
4105	USNG,United States National Grid
4106	USNH,United States Naval Hospital
4107	USNI,United States Naval Institute
4108	USNO,U.S. Naval Observatory
4109	USNOFS,United States Naval Observatory Flagstaff Station
4110	USNP,United States Newspaper Program
4111	USNR,United States Navy Reserve
4112	USNS,United States Naval Ship
4113	USNZ,University Sport New Zealand
4114	USPS,United States Postal Service
4115	USPTO,United States Patent and Trademark Office
4116	USR,Universal System Resources (/usr,directory in a *NIX filesystem),User
4117	USS,United States ship (sometimes meaningless; see Star Trek)
4118	USSPACECOM,United States Space Command
4119	USSR,Union of Soviet Socialist Republics
4120	UST,Underground Storage Tank
4121	USTRANSCOM,United States Transportation Command
4122	USWNT,United States women's national (soccer) team
4123	UT,Universal Time
4124	UTEP, University of Texas at El Paso (pronounced you-tep)
4125	UTM,Universal Transverse Mercator (geographical co-ordinate system)
4126	UU,Unitarian Universalism,University of Utah,Unseen University
4127	UUA,Unitarian Universalist Association
4128	UUID,Universally Unique Identifier (see also GUID)
4129	UUV,Unmanned Underwater Vehicle
4130	UV,Burkina Faso (FIPS 10-4 country code; from Upper Volta),ultraviolet
4131	UW,University of Washington
4132	UWO,University of Western Ontario
4133	UWT,Under Water Telephone
4134	UWTG,Under Water Tug
4135	UWW,United World Wrestling
4136	UXO,Unexploded Ordnance
4137	UY,Uruguay (ISO 3166 and FIPS 10-4 country code digram)
4138	UZ,Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
4139	UZB,Uzbekistan (ISO 3166 trigram)
4140	V,5 (in Roman numerals),Vanadium,Volt
4141	VA,Vatican City-State (ISO 3166 digram),Veterans Affairs (U.S. Department of),Virginia (postal symbol),Various Artists
4142	VACIS,Vehicle And Container Inspection System
4143	VACIS,Victorian Ambulance Clinical Information System
4144	VANOS,Variable Nockenwelle System
4145	VAO,Vienna Art Orchestra
4146	VAT,Value-Added Tax,Vatican City-State (ISO 3166 trigram)
4147	VB,Victoria Bitter (beer),Visual Basic
4148	VBA,Visual Basic for Applications
4149	VC,Saint Vincent and the Grenadines (FIPS 10-4 country code; ISO 3166 digram),Victoria Cross
4150	VCDS,(Canada) Vice-Chief of the Defence Staff,VAG-COM Diagnostic System
4151	VCJCS,Vice Chairman,Joint Chiefs of Staff
4152	vCJD,Variant Creutzfeldt-Jakob Disease
4153	VCNO,(U.S.) Vice Chief of Naval Operations
4154	VCofS,Vice Chief of Staff
4155	VCR,Video cassette recorder
4156	VCT,Saint Vincent and the Grenadines (ISO 3166 trigram)
4157	VD,North Vietnam (ISO 3166 digram,obsolete 1977),Venereal Disease
4158	VDFS,VisualSVN Distributed File System (VDFS)
4159	VDR,North Vietnam (ISO 3166 trigram,obsolete 1977)
4160	VE,Venezuela (FIPS 10-4 country code; ISO 3166 digram)
4161	VEEGA,Venus Earth Earth Gravity Assist manœuvre
4162	VEN,Venezuela (ISO 3166 trigram)
4163	VERDI,Vittorio Emanuele Re D'Italia (Victor Emmanuel,King of Italy)
4164	VERITAS,Very Energetic Radiation Imaging Telescope Array System
4165	VFA,Victorian Football Association (historic Australian rules football league),Volatile Fatty Acid
4166	VfD,s for deletion (used in Wikipedia)
4167	VFL,Victorian Football League,the name of two distinct Australian rules football leagues:
4168	VFM,Value For Money
4169	VFMO,Very Fast Moving Object (astronomy)
4170	VFT,Virtual Function Table
4171	VFW,Veterans of Foreign Wars
4172	VG,British Virgin Islands (ISO 3166 digram)
4173	VGB,British Virgin Islands (ISO 3166 trigram)
4174	VH1, Video Hits One
4175	VHF,Very High Frequency
4176	VIA,Versatile Interface Adapter
4177	VIC,Victoria,Australia (postal symbol),Video Interface Chip,Virginia Intermont College
4178	VIDS,Visual Information Display System
4179	VII,7 (in Roman numerals)
4180	VIII,8 (in Roman numerals)
4181	VIN,(i/a) Vehicle Identification Number (ISO 3779)
4182	VIP,Very Important Person
4183	VIR,U.S. Virgin Islands (ISO 3166 trigram),Virgin Atlantic Airways (ICAO code)
4184	VIS,Vavoua International School,Vienna Independent Shorts,Viewable Image Size,Visual Instruction Set
4185	VISCII,VIetnamese Standard Code for Information Interchange
4186	VIT,Vellore Institute of Technology
4187	VIVO,Video In Video Out
4188	VJ,Video Jockey
4189	VK,Australia (ham radio code),Västerbottens-Kuriren,a Swedish daily newspaper
4190	VLA,Very Large Array,(UK) Veterinary Laboratories Agency
4191	VLAD, Vertical Line Array DIFAR
4192	VLBA,Very Long Baseline Array
4193	VLF,Very Low Frequency
4194	VLIW,Very Long Instruction Word
4195	VLPFC,VentroLateral PreFrontal Cortex
4196	VLPMC,VentroLateral PreMotor Cortex
4197	VLSF,Very Loud,Stink-Free
4198	VLSI,Very-large-scale integration
4199	VLVS,Very Loud,Very Stinky
4200	VM,Vietnam (FIPS 10-4 country code)
4201	VMF,Marine Fighting Squadron of the United States Marine Corps
4202	VMF,Variable Message Format
4203	VMN,VentroMedial Nucleus (neurophysiology)
4204	VN,Vietnam (ISO 3166 digram)
4205	VNIR,Visible and Near InfraRed
4206	VNM,Vietnam (ISO 3166 trigram)
4207	VNS,see entry
4208	VOA,Voice of America
4209	VOC,Vereenigde Oostindische Compagnie (Dutch East India Company),Volatile organic compounds
4210	VOIP,Voice Over Internet Protocol
4211	VOLT,Visual OpenType Layout Tool
4212	VON,Victorian Order of Nurses
4213	VOR,Voice of Russia
4214	VOX,Voice Operated oscillator
4215	VPN,Virtual Private Network
4216	VQ,Vector Quantization,U.S. Virgin Islands (FIPS 10-4 territory code)
4217	VR,Virtual Reality
4218	VRSG,Virtual Reality Scene Generator
4219	VSHORAD,Very Short Range Air Defence
4220	VSO,Voluntary Services Overseas
4221	VSR,Very Special Relativity
4222	VT,Vatican City-State (FIPS 10-4 country code),Vermont (postal symbol),Video tape,Virginia Tech
4223	VTC,Video Tele-Conference
4224	VTEC,Variable valve Timing and Electronic lift Control
4225	VTOL,Vertical Take-Off & Landing
4226	VU,Vanuatu (ISO 3166 digram),Vedanta University
4227	VUB,Vrije Universiteit Brussel (Belgian university)
4228	VUT,Vanuatu (ISO 3166 trigram)
4229	VV,Via Voice,Village Voice
4230	VVAF,Vietnam Veterans of America Foundation
4231	VW,Volkswagen
4232	VZ,Verizon Communications (NYSE code)
4233	W,Tungsten (from German Wolfram),Watt,West
4234	W3C,World Wide Web Consortium
4235	WA,Namibia (FIPS 10-4 country code; from West Africa),Washington state (postal symbol),Western Australia (postal symbol),World Archery (Federation)
4236	WAAC,Women's Army Auxiliary Corps (Britain) (World War I UK)
4237	WAAF,Women's Auxiliary Air Force (World War II UK)
4238	WAC,Western Athletic Conference,Women's Auxiliary Corps (World War II Canada),Women's Army Corps (World War II U.S.)
4239	WACC,Weighted Average Cost of Capital (accounting)
4240	WACS,What-A-Cartoon! Show
4241	WAD,Weapons Alert Designator
4242	WAGGGS,World Association of Girl Guides and Girl Scouts
4243	WAGs,Wives And Girlfriends (most notably of England national football team players at the 2006 FIFA World Cup,although the term existed earlier)
4244	WAK,Wake Island (ISO 3166 trigram,obsolete 1986)
4245	WAL,see entry
4246	WAN,Wide area network
4247	WAP,Wireless Application Protocol
4248	WAPIMA,What a pain in my ass
4249	WAR,With All Respect
4250	WAsP,Short form of WAAAAP (Wind Atlas Analysis and Application Program)
4251	WASP,White Anglo-Saxon Protestant,Wide Angle Search for Planets,Women Airforce Service Pilots
4252	WAYP,White And Yellow Pages
4253	WB,Warner Bros.,Welcome Back (Internet shorthand)
4254	Wb,Weber
4255	WBA,Warner Bros. Animation,West Bromwich Albion (F.C.),World Boxing Association
4256	WBC,World Boxing Council
4257	WBE,Work Breakdown Element
4258	WBO,World Boxing Organization
4259	WC,Water Closet,Winston Churchill,World Cup (sports)
4260	WCBO,World Chess Boxing Organisation
4261	WCBP,World Center for Birds of Prey
4262	WCL,World Confederation of Labour
4263	WCS,Weapon Control Status,Wildlife Conservation Society
4264	WCW,World Championship Wrestling
4265	WDC,Western Design Center,World Data Center
4266	WDIN,Wildlife Disease Information Node
4267	WDWR,Walt Disney World Resort
4268	WEBS,Weapon Effectiveness Battle Simulation
4269	WEC,World Extreme Cagefighting
4270	WEEE,Waste Electrical and Electronic Equipment
4271	WEF,World Economic Forum
4272	WEM,West Edmonton Mall
4273	WEU,Western European Union
4274	WEZ, Weapon Engagement Zone
4275	WF,Wallis and Futuna Islands (ISO 3166 digram)
4276	WFC,Women's Forage Corps (World War II UK)
4277	WFD,Weapon of Focused Destruction
4278	WFF,Wallops Flight Facility
4279	WFI,Water for Injection
4280	WFH,Working from home
4281	WFP,World Food Program
4282	WFZ,Weapons Free Zone
4283	WG,Working Group,Wade-Giles
4284	WH,Wehrmacht Heer (German World War II army vehicle licence plate code)
4285	WHAM,Wisconsin Hydrogen-Alpha Mapping (telescope)
4286	WHI,Women's Health Initiative
4287	WHIP,Walks plus hits per inning pitched
4288	WHO,World Health Organisation
4289	WHS,(U.S.) Washington Headquarters Services
4290	WI,Western Sahara (FIPS 10-4 country code),Wisconsin (postal symbol),Women's Institute
4291	WIA,Wounded In Action,Wireless Institute of Australia (Amateur Radio)
4292	WIIFM,What's in it for me?
4293	WIMP,Weakly Interacting Massive Particle,Windows,Icons,Menus,Pointers
4294	WIP,Work In Progress
4295	WIPO, World Intellectual Property Organization
4296	WIPP,[Nuclear] Waste Isolation Pilot Plant
4297	WIYN,Wisconsin Indiana Yale NOAO telescope consortium
4298	WK,Wake Island (ISO 3166 digram,obsolete 1986)
4299	WKYP,Will Keep You Posted
4300	WL,Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
4301	WLB,Women's Land Brigade (World War II Canada)
4302	WLF,Wallis and Futuna Islands (ISO 3166 trigram)
4303	WLOG,Without Loss Of Generality (see WOLOG)
4304	WM,Wehrmacht Marine (German World War II navy vehicle licence plate code)
4305	WMANUS,West Midlands Area National Union of Students
4306	WMD,World Movement for Democracy
4307	WMI,Wildlife Management Institute
4308	WMO,World Meteorological Organization
4309	WNA,World Nuclear Association
4310	WNIT,Women's National Invitation Tournament
4311	WNSD,What's New,Scooby-Doo?
4312	WNW,West North-West
4313	WO,Warrant Officer
4314	WOF,Width of Fabric
4315	WOFT,Waste Of Fucking Time
4316	WOFTAM,Waste Of Fucking Time And Money
4317	WOI, Wheels Of Italy
4318	WOM,Write Only Memory
4319	WOS,Wilson Ornithological Society
4320	WOSM,World Organization of the Scout Movement,Worldwide Oil Spill Model
4321	WOT,Waste Of Time
4322	WP,White Phosphorus (ammunition)
4323	WPB,War Production Board during World War II
4324	WPE,World Pork Expo
4325	WPK,Wider Peacekeeping
4326	WPT,World Poker Tour,World Premiere Toons
4327	WR,Wide Receiver (football)
4328	WRAC,Women's Royal Army Corps (World War II UK)
4329	WRAIR,Walter Reed Army Institute of Research
4330	WRC,World Rally Championship
4331	WRC,World Religions Conference
4332	WRNG,Warning
4333	WRS,Worldwide Reference System
4334	WRT,NHS Workforce Review Team
4335	WRT,The Linksys routers whose model name start with 'WRT'
4336	WRT,Third party firmware for the Linksys WRT routers and compatible models from other vendors.
4337	WRT,Wallace Roberts & Todd,LLC (Urban Planning and Design)
4338	WRT,Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
4339	WRT,Wholesale,Trade,Retail sector,category in employment and economics statistics
4340	WRT,Wireless Receiver/Transmitter ( computer networks/IT )
4341	WRT,Wireless Ronin Technologies (digital signage)
4342	WRT,World Rally Team
4343	WRT,Writer Response Theory
4344	WRVS,Women's Royal Voluntary Service,now only known by the acronym (UK)
4345	WS,Samoa (ISO 3166 and FIPS 10-4 country code digram; from the country's former name of Western Samoa),Writer to the Signet (a Scottish solicitor)
4346	WSC,Weapon System Catalogue
4347	WSDL,Web Services Description Language
4348	WSJ,(The) Wall Street Journal
4349	WSL,White Star Line (shipping company),Women's Super League,used to describe England's top women's association football league and top women's rugby union competition,Workers' Socialist League (UK political party)
4350	WSM,Samoa (ISO 3166 trigram; from Western Samoa),Winchester Short Magnum (family of rifle cartridges)
4351	WSROC,Western Sydney Regional Organisation of Councils
4352	WSSM,Winchester Super Short Magnum (family of rifle cartridges)
4353	WSTC,Women Signallers Territorial Corps (World War II UK)
4354	WSW,West South-West
4355	WTB,Wales Tourism Board,Warenterminbörse Hannover
4356	WTC,World Trade Center
4357	WTF,What the fuck?; also What a Terrible Failure (android)
4358	WTFH,What The Fucking Hell
4359	WTH,What the Hell
4360	WTO,World Trade Organization
4361	WU,Wabash University,Washington University in St. Louis,Western Union,Windows Update,Work unit,WU Wien (German Wirtschaftsuniversität Wien,Vienna University of Economics and Business Administration)
4362	WUBU2,What you been up to
4363	WUU2,What you up to,Internet slang popular with teenagers.
4364	WV,West Virginia (postal symbol)
4365	WVA,World Veterinary Association
4366	WVIAC,West Virginia Intercollegiate Athletic Conference
4367	WVR,Women's Volunteer Reserve (World War II UK)
4368	WVSC,Women's Volunteer Service Corps (World War II Canada)
4369	WVU,West Virginia University
4370	WW,see entry
4371	WWE,World Wrestling Entertainment
4372	WWF,World Wide Fund for Nature,from its original name of World Wildlife Fund,which remains the legal name in the U.S. and Canada,World Wrestling Federation
4373	WWI,World War I
4374	WWII,World War II
4375	WWIII,World War III
4376	WWS,Wheaton Warrenville South High School
4377	WWV,Wagner-Werk-Verzeichnis (catalog of the works of Richard Wagner,and callsign of NIST's shortwave radio station in Fort Collins,Colorado)
4378	WWWF,World Wide Wrestling Federation
4379	WXO,Weather [Executive] Officer
4380	WY,Wyoming (postal symbol)
4381	WZ,Swaziland (FIPS 10-4 country code)
4382	XBML,eXtended Business Modelling Language
4383	XC,Ninety (in Roman numerals)
4384	XCBL,XML Common Business Library
4385	XD,Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
4386	Xe,Xenon
4387	XF,Automobile made by Jaguar,Truck made by DAF Trucks,IATA code for Vladivostok Air
4388	XFA,XML Forms Architecture
4389	XFC,Xtreme Fighting Championships
4390	XFD,Fighter aircraft made by Douglas
4391	Xfe,X File Explorer
4392	XFF,X-Forwarded-For
4393	XFG,Exfoliation glaucoma
4394	XFH,1932 rototype U.S. Navy fighter aircraft made by Hall,X-ray fluorescence holography
4395	XFN,XHTML Friends Network,
4396	XFR,Automobile made by Jaguar
4397	XFT,X FreeType interface library
4398	XG,Automobile made by Hyundai
4399	XGA,Extended Graphics Array
4400	XGP,Extreme Game Player
4401	XHR,eXtra high Image resolution,XMLHTTPRequest
4402	XHTML,eXtensible Hypertext Markup Language
4403	XI,Eleven (in Roman numerals)
4404	XII,Twelve (in Roman numerals)
4405	XIII,Thirteen (in Roman numerals)
4406	XIV,Fourteen (in Roman numerals)
4407	XIX,Nineteen (in Roman numerals)
4408	XJ,Automobile made by Jaguar,Automobile made by Jeep
4409	XJL,Amphibian aircraft made by Columbia,Automobile made by Jaguar
4410	XJS,Automobile made by Jaguar
4411	XK,Automobile made by Jaguar,Automobile made by Jeep,Kell blood group precursor
4412	XKB,X keyboard extension
4413	XKE,Automobile made by Jaguar
4414	XKR,Automobile made by Jaguar
4415	XL,eXtra Large,Forty (in Roman numerals)
4416	XML,eXtensible Markup Language
4417	XMSF,eXtensible Modelling and Simulation Framework
4418	XN,Christian,Nordic Patent Institute
4419	XNC,X Northern Captain
4420	XNS,Xerox Network Systems,Extensible Name Service,Christians
4421	XNU,X is Not Unix
4422	XP,eXperience Point (role-playing games)
4423	XQJ,XQuery API for Java™
4424	XRAY,X-Ray
4425	XRML,eXtensible Rights Markup Language
4426	XS,Xiaolin Showdown
4427	XSL,eXtensible Style Language
4428	XTMH,eXtreme Technology Multiprocessor Hyperlanguage
4429	XUL,XML User Interface Language
4430	XV,Fifteen (in Roman numerals)
4431	XVI,Sixteen (in Roman numerals)
4432	XVII,Seventeen (in Roman numerals)
4433	XVIII,Eighteen (in Roman numerals)
4434	XWF,Xcitement Wrestling Federation
4435	XX,Twenty (in Roman numerals)
4436	XXX,Hardcore pornography (film rating),Thirty (in Roman numera
4437	Xyl,Xylobium
4438	XZN,Triple square screw driver
4439	y,Yocto-
4440	Y,Yotta,Yttrium
4441	Y2K,Year Two Thousand
4442	yA,Yoctoampere
4443	YA,Yottaampere,Young Adult
4444	Ya,Yottayear
4445	YaBPr,Yet another Brother Pat rant
4446	YABSLAG,Yet another boy singing like a girl
4447	YAC, Youth-Adult Committee
4448	YAFLA,Yet Another Five Letter Abbreviation
4449	YAP,Young Aspiring Professional
4450	YB,Youcef Benzouada (Southern Algerian name)
4451	Yb,Ytterbium
4452	yC,Yoctocoulomb
4453	YC,Yottacoulomb
4454	YD,People's Democratic Republic of Yemen (ISO 3166 digram,obsolete 1990)
4455	YDS,Yosemite Decimal System (climbing)
4456	YE,Yemen (ISO 3166 digram)
4457	YEM,Yemen (ISO 3166 trigram)
4458	yF,Yoctofarad
4459	YF,Yottafarad
4460	yg,Yoctogram
4461	Yg,Yottagram
4462	YGCO,Yamaneko Group of Comet Observers
4463	Ygo,Yu-Gi-Oh!
4464	yH,Yoctohenry
4465	YH,Yottahenry
4466	YHBT,You Have Been Trolled
4467	YHIH1,You Heard It Here First (lowercase: yhih1,pronounced yi-hi)
4468	YHII,You Have It Inside
4469	YHS,Ya Hoor sur!
4470	YI,Serbia and Montenegro (deprecated FIPS 10-4 country code,now RB (Serbia) and MJ (Montenegro))
4471	Yi,Yobi
4472	Yippie,Youth International Party + suffix
4473	yJ,Yoctojoule
4474	YJ,Yottajoule
4475	yK,Yoctokelvin
4476	YK,Yottakelvin
4477	YKYFCW,You know you're from Christchurch when (post-earthquake joke)
4478	yL,Yoctolitre
4479	YL,Yottalitre
4480	YM,Yemen (FIPS 10-4 country code),Your Magazine (originally Young Miss,later Young & Modern)
4481	ym,Yoctometre
4482	Ym,Yottametre
4483	YMD,People's Democratic Republic of Yemen (ISO 3166 trigram,obsolete 1990)
4484	YMMD,You Make My Day
4485	yN,Yoctonewton
4486	YN,Yottanewton
4487	YO,former Yugoslavia (NATO country code,obsolete 1993)
4488	YOLO,You Only Live Once
4489	YPA,Yards per Pass Attempt (football statistic)
4490	YPIO,Your Problem Is Obvious
4491	YPO,Young Presidents' Organization
4492	ys,Yoctosecond
4493	yS,Yoctosiemens
4494	Ys,Yottasecond
4495	YS,Yottasiemens
4496	YSA,Single adult (LDS Church),Young Socialist Alliance,Youth Service America
4497	YSI,Young Scots for Independence
4498	YT,Mayotte (ISO 3166 digram),Yottatesla,Yukon Territory (postal symbol)
4499	yT,Yoctotesla
4500	YTD,Year-To-Date
4501	YTM,Yield to Maturity
4502	YTS,Youth Training Scheme
4503	YTT,Yoshi Topsy-Turvy
4504	YU,York University,former Yugoslavia (ISO 3166 digram,obsolete 2003)
4505	YUG,former Yugoslavia (ISO 3166 trigram,obsolete 2003)
4506	Yuppie,Young Urban Professional + suffix
4507	yV,Yoctovolt
4508	YV,Yottavolt
4509	yW,Yoctowatt
4510	YW,Yottawatt
4511	YYH,YuYu Hakusho
4512	z,Zepto
4513	Z,Zetta
4514	ZA,South Africa (ISO 3166 digram),Zambia (FIPS 10-4 country code),Zettaampere
4515	zA,Zeptoampere
4516	ZAF,South Africa (ISO 3166 trigram)
4517	ZAMS,Zero age main sequence
4518	ZAS,Zylinder Abschaltung System
4519	ZBT,Zero-Balance Transfer (accounting)
4520	zC,Zeptocoulomb
4521	ZC,Zettacoulomb
4522	ZCM,(n) ZENworks Configuration Management
4523	ZCMK,Zone Control Master Key
4524	ZCU,Zimbabwe Cricket Union
4525	\a,Atto-