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
1257	FG,Falun Gong
1258	fg,Femtogram
1259	FGR,Flickr Group Roulette
1260	fH,Femtohenry
1261	FHFIF,Foster's Home for Imaginary Friends
1262	FIBUA,Fighting In Built-Up Areas
1263	FIC,Fellowship for Intentional Community
1264	FID,Foreign Internal Defence
1265	FIE,Fly-In Echelon
1266	FIMPT,Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1267	FIN,Finland (ISO 3166 trigram)
1268	FISH,Fluorescence In-Situ Hybridisation
1269	FiST,Fire Support Team
1270	FITS,Flexible Image Transport System
1271	FIU,Florida International University
1272	fJ,Femtojoule
1273	FJI,Fiji (ISO 3166 trigram)
1274	FJN,Financial Job Network
1275	fK,Femtokelvin
1276	FKSM,Fort Knox Supplemental Manual
1277	FKT,Fastest Known Time
1278	fL,Femtolitre
1279	FL,Florida (postal symbol)
1280	FLAB,Four-letter abbreviation
1281	FLAC,Free Legal Advice Centres
1282	FLAC,Free Lossless Audio Codec
1283	FLB,Forward Logistics Base
1284	FLET,Forward Line of Enemy Troops
1285	FLG,Falun Gong
1286	FLIP,Flight Information Publication
1287	FLIR,Forward Looking InfraRed (sensor)
1288	FLK,Falkland Islands (ISO 3166 trigram)
1289	FLOT,Forward Line of Own Troops
1290	FLQ,Free Legal Questions
1291	FLSA,Fair Labor Standards Act
1292	FLTSAT,Fleet Satellite
1293	FLTSATCOM,Fleet Satellite Communication System
1294	FM,Factory Mutual
1295	fm,Femtometre
1296	Fm,Fermium
1297	FMCG,Fast Moving Consumer Goods
1298	FME,Formal Methods Europe
1299	FMECA,Failure Modes and Effect Criticality Analysis
1300	FMJD,Fédération Mondiale du Jeu de Dames
1301	FMLA,Family Medical Leave Act
1302	fMRI,Functional Magnetic Resonance Imaging
1303	FMSF,False Memory Syndrome Foundation
1304	FMTV,Family of Medium Tactical Vehicles
1305	fN,Femtonewton
1306	FNA,Functional Needs Analysis
1307	FOAD,Fuck Off And Die
1308	FOAF,Friend Of A friend
1309	FOB,Forward Operating Base
1310	FoB,Free On Board (shipping)
1311	FoE,Friends of the Earth
1312	FOGC,Federal Oil and Gas Council
1313	FOH,Front Of House
1314	FOIA,Freedom of Information Act
1315	FOM,Federation Object Model
1316	FONSI,Finding of No Significant Impact
1317	FOO,Forward Observation Officer
1318	FOOP,Friends Of Organ Pipes (Volunteer group)
1319	FOR,Field Of Regard,Frame Of Reference
1320	FoS,Family of Systems
1321	FOS,Florida Ornithological Society,Full Operational Status
1322	FOSE,Fallout 3 Script Extender
1323	FOSE,Federal Office Systems Expo
1324	FOT,Free on truck
1325	FOTA,Fellow of the Orthodontic Technicians Association
1326	FOTC,Flight of the Conchords
1327	FOUO,For Official Use Only
1328	FP,French Polynesia (FIPS 10-4 territory code)
1329	FPS,Fire Prevention System
1330	FR,France (FIPS 10-4 country code; ISO 3166 digram)
1331	Fr,Francium
1332	FRICBM,Full Range ICBM
1333	FRO,Faroe Islands (ISO 3166 trigram)
1334	FRSA,Fellow of the Royal Society of Art
1335	FRY,Federal Republic of Yugoslavia
1336	fs,Femtosecond
1337	fS,Femtosiemens
1338	FSCL,Fire Support Co-ordination Line
1339	FSE,Fire Support Element
1340	FSF,Free Software Foundation
1341	FSH,Follicle Stimulating Hormone
1342	FSI,Fuel Stratified Injection
1343	FSM,Federated States of Micronesia (ISO 3166 trigram),Flying Spaghetti Monster (satirical religion)
1344	FSO,Fire Support Officer,Flotilla Staff Officer,Foreign Service Officer
1345	FSS,Fire Support Station
1346	FSSP,Families of Structurally Similar Proteins
1347	FST,Finance Support Team,Finlands Svenska Television (Finland's Swedish-language television),Future Soviet Tank (Cold War era)
1348	FSTC,Foreign Science Technology Center (now NGIC)
1349	fT,Femtotesla
1350	FTC,Federal Trade Commission
1351	FTE,Full Time Equivalent
1352	FTL,Faster Than Light
1353	FTS,Flight Termination System used during some rocket launches
1354	FTS,Fuck That Shit
1355	FTW,For The Win (a commonly used phrase used online to indicate success) F@#K The World,Forever Together Where ever (gang slogan)
1356	FU,Smoke (METAR Code)
1357	FUBAR,Fucked/Fouled Up Beyond All Recognition/Repair
1358	FUCK,For,Unlawful,Carnal,Knowledge (Van Halen album title)
1359	FUD,Fear,Uncertainty & Doubt (marketing strategy)
1360	fV,Femtovolt
1361	fW,Femtowatt
1362	FW,Forward
1363	FWC,Football World Cup
1364	FWF,Fixed Word Format
1365	FWI,French West Indies
1366	FWIW,For What It's Worth
1367	FWS,U.S. Fish and Wildlife Service
1368	FWT,Fresh Water Tank
1369	FX,Firefox,Fox Extended,Metropolitan France (ISO 3166 digram; obsolete 1997),Special effect
1370	FXX,Metropolitan France (ISO 3166 trigram; obsolete 1997)
1371	FY,Fiscal Year,Former Yugoslav Republic of Macedonia (NATO country code)
1372	FYA,For Your Agenda
1373	FYDP,Five-Year Defense Plan (U.S.)
1374	FYI,For Your Information
1375	FYROM,Former Yugoslav Republic of Macedonia
1376	FZDZ,Freezing Drizzle (METAR Code)
1377	FZFG,Freezing Fog (METAR Code)
1378	FZRA,Freezing Rain (METAR Code)
1379	G,Gauss,General Audiences (movie rating)
1380	g,Gram
1381	G1,Assistant Chief-of-Staff,Personnel
1382	G10,Group of 10 (G7 + Belgium,Netherlands,Sweden,Switzerland; numbering 11 in fact)
1383	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)
1384	G2,Assistant Chief-of-Staff,Intelligence
1385	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)
1386	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)
1387	G3,Heckler & Koch G3
1388	G4,Generation Four PowerPC microprocessor,Assistant Chief-of-Staff,Logistics
1389	G5,Generation Five PowerPC microprocessor,Assistant Chief-of-Staff,Public Affairs
1390	G6,Assistant Chief-of-Staff,Information Technology,Group of 6 (France,Germany,United States,Japan,United Kingdom,Italy) (1975)
1391	G7,Assistant Chief-of-Staff,Training,Group of 7 (G6 + Canada) (1976)
1392	G77,Group of 77 (issued from the United Nations Conference on Commerce and Development,1964; currently numbers 133)
1393	G8,Assistant Chief-of-Staff,Finance,Group of 8 (G7 + Russia) (1998)
1394	GA,Gabon (ISO 3166 digram),The Gambia (FIPS 10-4 country code),Gamblers Anonymous,Georgia (postal symbol),Gigaampere,Goa (Indian state code)
1395	Ga,Gallium,Gigaannum
1396	GAAR,General Anti-Avoidance Rule (tax evasion)
1397	GAB,Gabon (ISO 3166 trigram)
1398	GABA,Gamma-AminoButyric Acid
1399	GAD,Generalized Anxiety Disorder
1400	GAF,Garfield and Friends
1401	GALCIT,Guggenheim Aeronautical Laboratory,California Institute of Technology
1402	GAO,U.S. Government Accountability Office
1403	GAW,Global Atmospheric Watch
1404	GB,Gabon (FIPS 10-4 country code),United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10]
1405	GBBC,Great (Global) Backyard Bird Count
1406	GBE,Knight/Dame Grand Cross of the Order of the British Empire
1407	GBH,Great Bash Heel (Japanese professional wrestling stable),Gregory Bonner Hale (British design and advertising agency),Grievous bodily harm
1408	GBR,United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1409	GBU,Glide-Bomb Unit,Global Business Unit
1410	GC,East Germany (NATO country code; obsolete 1990),General classification (cycling),General counsel,George Cross (British civil decoration),Gigacoulomb [Grindr cruise]
1411	GCA,Graduate in Claims Administration
1412	GCD,see entry
1413	GCF,Greatest Common Factor
1414	GCI,Ground-controlled interception
1415	GCN,Gamma-ray burst Coordination Network
1416	GCS,Global Coordinate System
1417	GCSE,General Certificate of Secondary Education (UK)
1418	Gd,Gadolinium
1419	GD,Grenada (ISO 3166 digram)
1420	GDC,Game Developers Conference,General Dental Council
1421	GDL,Game Definition Language
1422	GDP,General Dental Practitioner (UK),Gross Domestic Product
1423	GDR,General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1424	GDR,German Democratic Republic (cf. DDR)
1425	GDW,Game Designers Workshop
1426	GE,General Electric,Genetic Engineering (cf. GM),Georgia (ISO 3166 digram)
1427	Ge,Germanium
1428	GEBCO,General Bathymetric Chart of the Oceans
1429	GEC,Great Engineering Challenge
1430	GED,General Educational Development (high school equivalency credential in the U.S. and Canada)
1431	GEEP,Geophysical Equipment Exploration Platform
1432	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
1433	GEN,Full General (four stars) in the U.S. Army
1434	GEO,Geostationary Earth Orbit,Georgia (ISO 3166 trigram)
1435	GEQ,Equatorial Guinea (IOC trigram,but not FIFA or ISO 3166)
1436	GER,Germany (IOC and FIFA trigram,but not ISO 3166)
1437	GeV,Gigaelectron-volt
1438	GEV,Ground Effect Vehicle
1439	GF,French Guiana (ISO 3166 digram),Gigafarad
1440	GFCF,Gluten-free,casein-free diet,Gross fixed capital formation
1441	GFCI,Ground Fault Circuit Interruptor (aka GFI)
1442	GFE,Girlfriend experience (used in escort services),Good Faith Estimate,Government Furnished Equipment
1443	GFI,Ground Fault Interruptor (aka GFCI)
1444	GFL,German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1445	GFN,Global Footprint Network
1446	GG,Georgia (FIPS 10-4 country code)
1447	GGK,Good God Karma
1448	GGP,General Game Playing,General Growth Properties (U.S. shopping center owner),GH[edit]
1449	GH,Ghana (ISO 3166 digram; FIPS 10-4 country code),Gigahenry
1450	GHA,Ghana (ISO 3166 trigram)
1451	GHB,gamma-Hydroxybutyric acid
1452	GI,Galvanised Iron,Gastro-Intestinal,General Issue,Gibraltar (ISO 3166 digram; FIPS 10-4 territory code),Government Issue
1453	Gi,Gibi
1454	GIB,Gibraltar (ISO 3166 trigram)
1455	GIG,Global Information Grid
1456	GIN,Guinea (ISO 3166 trigram),Guidelines International Network
1457	GINK,Going Insane Not Knowing,orig. Colorado 2010 M.Kalfas
1458	GINO,Godzilla In Name Only
1459	GJ,Gigajoule,Grenada (FIPS 10-4 country code),Gujarat (Indian state code)
1460	GJD,Geocentric Julian Day
1461	GK,Gigakelvin,Guernsey (FIPS 10-4 territory code)
1462	GL,Gigalitre,Graphics Language,Greenland (ISO 3166 digram; FIPS 10-4 territory code),Grenade Launcher
1463	GLAAD,Gay and Lesbian Alliance Against Defamation
1464	GLAC,General Ledger Accounting Code
1465	GLAST,Gamma-ray Large Area Space Telescope
1466	GLBA,Gramm-Leach-Bliley Act
1467	GLC,Gas-liquid chromatography
1468	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
1469	GLP,Guadeloupe (ISO 3166 trigram)
1470	GLV,Gained Life Value
1471	Gm,Gigametre
1472	GMC,U.K. General Medical Council,Gospel Music Channel
1473	GMFSC,Ground Mobile Forces Satellite Communications
1474	GMI,Generic Model Interface,Geometry Model Instance
1475	GMO,Genetically Modified Organism
1476	GMPCS,Global Mobile Personal Communications by Satellite
1477	GMT,Giant Magellan Telescope,Greenwich Mean Time,GN[edit]
1478	GN,Giganewton,Guinea (ISO 3166 digram)
1479	GNAS,Grand National Archery Society
1480	GNB,Guinea-Bissau (ISO 3166 trigram)
1481	GNP,Gross National Product
1482	GNQ,Equatorial Guinea (ISO 3166 trigram)
1483	GnRH,Gonadotropin-Releasing Hormone
1484	GO,Glorioso Islands (FIPS 10-4 territory code)
1485	GOA,General of the Army (United States only)
1486	GOAT,Greatest Of All Time
1487	GOC,General Officer Commanding
1488	GOES,Geostationary Operational Environmental Satellite
1489	GOP,Grand Old Party
1490	GOSC,General Officer Steering Committee
1491	GOSH,Great Ormond Street Hospital
1492	GOSP,Gas/Oil Separation Plant
1493	GOTS,Government off-the-shelf
1494	GPA,Grade Point Average
1495	GPC,Global Path Cache
1496	GPIB,General-Purpose Instrumentation/Interface Bus
1497	GPO,General Post Office
1498	GPPC,Genetics and Public Policy Center
1499	GPR,Ground-Penetrating Radar
1500	GRAIL,Gravity Recovery and Interior Laboratory
1501	GRAS,Generally recognized as safe (FDA list)
1502	GRB,Gamma-Ray Burst
1503	GRC,Greece (ISO 3166 trigram)
1504	GRD,Grenada (ISO 3166 trigram)
1505	GRID,Gay-Related Immune Deficiency (original name of AIDS)
1506	GriT,Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1507	GRL,Greenland (ISO 3166 trigram)
1508	GRP,Graphite-reinforced plastic,see Carbon-fiber-reinforced polymer
1509	GS,General Schedule (US civil service pay scale),General Support,Gigasiemens,South Georgia and the South Sandwich Islands (ISO 3166 digram)
1510	Gs,Gigasecond
1511	GSA,U.S. General Services Administration
1512	GSD,Graphical Situation Display
1513	GSGB,(God send glamour boy 9-10/10)
1514	GSK,GlaxoSmithKline [good sexual karma]
1515	GSN,Game Show Network
1516	GSO,General Services Officer (U.S. Department of State)
1517	GSOH,Good Sense Of Humour
1518	GSP,Georges St-Pierre (Canadian MMA fighter)
1519	GSR,Gun Shot Residue
1520	GSS,Generic Security Services
1521	GST,Goods and Services Tax (Australia,Canada,and other countries)
1522	GSW,Gunshot wound
1523	GT,Gigatesla,Gran Turismo,Grand Touring,Guatemala (FIPS 10-4 country code; ISO 3166 digram)
1524	GTB,Get to bed,namely to get a new job after a long time of searching,usually following a phone call
1525	GTC,Gran Telescopio Canarias (Spanish,Canaries Great Telescope)
1526	GTD,Getting Things Done
1527	GTG,Got To Go (Internet chat)
1528	GTGN,Getty Thesaurus of Geographic Names
1529	GTK,Good To Know (Internet chat)
1530	GTM,Guatemala (ISO 3166 trigram)
1531	GU,Guam (postal symbol; ISO 3166 digram)
1532	GUA,Guatemala (IOC and FIFA trigram,but not ISO 3166)
1533	GUF,French Guiana (ISO 3166 trigram)
1534	GUILT,Gangliated Utrophin Immuno Latency Toxin
1535	GULCR,Grupo de Usuarios de Linux de Costa Rica
1536	GUT,Grand Unification Theory
1537	GV,Gigavolt,Guinea (FIPS 10-4 country code)
1538	GW,Games Workshop,Germ Warfare,Gigawatt,Guided Weapon,Guinea-Bissau (ISO 3166 digram)
1539	GWARS,Ground Warfare System (simulation)
1540	GWAS,Grand Western Archery Society
1541	GWOT,Global War on Terrorism
1542	GWS,Gulf War Syndrome,Greater Western Sydney
1543	GXE,Gene-enivronment interaction
1544	GXM,Matrox Graphics eXpansion Module
1545	GxP,Good X Practice (X can mean: clinical,manufacturing,pharmaceutical,etc.)
1546	GXP,Grid Exit Point,Global Xchange Programme,Indication of highest performance level on some Pontiac vehicles
1547	GY,Guyana (FIPS 10-4 country code; ISO 3166 digram)
1548	GZ,Gaza Strip (FIPS 10-4 territory code),Ground Zero
1549	GZK,Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1550	h,Hecto
1551	H,Henry,Hydrogen
1552	HA,Haiti (FIPS 10-4 country code),High Availability
1553	HAARP,High Frequency Active Auroral Research Program
1554	HAART,Highly Active Anti-Retroviral Therapy
1555	HAI,Human Awareness Institute
1556	HAL,Hardware Abstraction Layer
1557	HALO,High Altitude Low Opening (parachute jump)
1558	HALT,Highly Accelerated Life Test,Hungry Angry Lonely Tired
1559	HAM,Amateur radio operator
1560	HANS,Head And Neck Support (device used in many race cars)
1561	HARM,High-speed Anti-Radiation Missile
1562	HAT,Highest Astronomical Tide (nautical charts),Hungarian Automated Telescope
1563	HAW,Heavy Antitank Weapon
1564	HAWK,Homing All the Way Killer (air defence system)
1565	HAZ,Heat-Affected Zone
1566	HAZMAT,Hazardous Materials
1567	HBCD,HexaBromoCycloDodecane
1568	HBO,Home Box Office
1569	HBR,Harvard Business Review
1570	HBT,Heterojunction Bipolar Transistor
1571	HBV,Hepatitis B Virus
1572	HCCI,Homogeneous Charge Compression Ignition
1573	HCF,Highest Common Factor
1574	HCSC,Higher Command and Staff Course
1575	HCT,Higher Colleges of Technology,tertiary education institution in the United Arab Emirates (UAE)
1576	HD,Henry Draper (star catalogue),Hull-Down (armoured vehicle target,as opposed to Fully Exposed),High Definition,Huntington's Disease
1577	HDL,High-Density Lipoprotein
1578	HDM,Human Decision-Making
1579	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)
1580	HDRA,Henry Doubleday Research Association
1581	He,Helium
1582	HE,High Explosive
1583	HEAT,High Explosive Anti-Tank (ammunition)
1584	HEBA,Hellenic Basketball Clubs Association
1585	HEER,High-Explosive Extended Range (ammunition)
1586	HEIC,Honourable East India Company
1587	HEMP,High-Altitude Electromagnetic Pulse
1588	HEO,High Earth Orbit,Highly Elliptical Orbit
1589	HEOSS,High Earth Orbit Space Surveillance
1590	HEP,High-Explosive Plastic (ammunition)
1591	HEPA,High-Efficiency Particulate Air (filter)
1592	HESH,High-Explosive,Squash-Head (ammunition)
1593	HESV,Heavy Engineering Support Vehicle
1594	HETT,Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1595	HEU,Highly Enriched Uranium
1596	Hewitts,Hills in England,Wales and Ireland over Two Thousand feet (with topographic prominence of at least 30 m)
1597	Hf,Hafnium
1598	HF,High Frequency
1599	HFE,Human Fertilisation and Embryology (UK Act)
1600	HFE,The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1601	HFEA,Human Fertilisation and Embryology Authority (UK)
1602	Hg,Mercury (Latin Hydrargyrum)
1603	HGC,UK Human Genetics Commission
1604	HGF,Human Growth Factor
1605	HGTV,Home & Garden Television
1606	HHB,Ha Ha Bonk,The noise made when you laugh your head off. Used instead of LOL...
1607	HI,Hawaii (postal symbol)
1608	HIH,His (or Her) Imperial Highness
1609	HIM,His (or Her) Imperial Majesty
1610	HIMAD,High to Medium Altitude Air Defence (see also H/MAD)
1611	HIMEZ,High Altitude Missile Engagement Zone
1612	HIMYM,How I Met Your Mother
1613	HIPAA,U.S. Health Insurance Portability and Accountability Act
1614	Hipparcos,HIgh Precision Parallax COllecting Satellite
1615	Hird,Hurd of interfaces representing depth (cf. HURD)
1616	HiRISE,High Resolution Imaging Science Experiment
1617	HIT,Health Information Technology
1618	HIV,Human Immunodeficiency Virus
1619	HIWT,Hobart Institute of Welding Technology
1620	HJD,Heliocentric Julian Day
1621	HK,Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1622	HKG,Hong Kong (ISO 3166 trigram)
1623	HKS,HyperKinetic Syndrome
1624	hL,Hectolitre
1625	HL,Holding Line
1626	HLA,High Level Architecture (simulation),Human Leukocyte Antigen
1627	HLL,High-Level Language
1628	HLN,Headline News
1629	HLOS,High Level Output Specification
1630	HLVW,Heavy Logistics Vehicle,Wheeled
1631	HM,Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1632	HMCE,Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1633	HMCS,Her/His Majesty's Canadian Ship,Her Majesty's Courts Service (former UK agency; succeeded by Her Majesty's Courts and Tribunals Service)
1634	HMD,Heard and McDonald Islands (ISO 3166 trigram)
1635	HMF,HydroxyMethyl Furfural
1636	HMO,Health maintenance organization
1637	HMP,Her Majesty's Prison
1638	HMRC,Her/His Majesty's Revenue and Customs
1639	HMS,Helmet-mounted display,Her/His Majesty's Ship (Royal Navy)
1640	HMSO,Her Majesty's Stationery Office
1641	HMV,His Master's Voice
1642	HN,Honduras (ISO 3166 digram)
1643	HND,Honduras (ISO 3166 trigram)
1644	Ho,Holmium
1645	HO,Honduras (FIPS 10-4 country code)
1646	HOLLAND,Hope Our Love Lasts And Never Dies
1647	HOMES,the Great Lakes; Huron,Ontario,Michigan,Erie,Superior
1648	HONY,Humans of New York,a photoblog.
1649	HOPI,Hybrid Optical and Packet Infrastructure (see Internet2,Abilene Network)
1650	HoReCa,Hotel,Restaurant and Catering
1651	HORIZON,Hélicoptère d'observation radar et d'investigation sur zone (French,Zone Investigation and Radar Observation Helicopter)
1652	HOSTAC,Helicopter Operations from Ships Other Than Aircraft Carriers
1653	HOT,Highly Optimised Tolerance
1654	HOTAS,Hands on throttle-and-stick
1655	HOV,High Occupancy Vehicle
1656	HP,Hewlett-Packard,Hindustan Petroleum,Himachal Pradesh (Indian state code)
1657	hp,horse power
1658	HPA,UK Health Protection Agency
1659	HPCL,Hindustan Petroleum Corporation Limited
1660	HPLC,High Performance Liquid Chromatography
1661	HPT,High[er] Payoff Target
1662	HPV,Human Papilloma Virus
1663	HQ,HeadQuarters,Howland Island (FIPS 10-4 territory code)
1664	HQDA,HeadQuarters,Department of the Army
1665	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
1666	HRBL,High-level Representation of Behavior Language (original name of the Herbal language)
1667	HRD,Human Resource Development
1668	HRED,(U.S. Army Research Laboratory's) Human Research and Engineering Directorate (Aberdeen Proving Ground,Maryland)
1669	HRF,High iness Forces
1670	HRH,His (or Her) Royal Highness
1671	HRM,His (or Her) Royal Majesty
1672	HRM,Human Resource Management
1673	HRT,Hormone Replacement Therapy
1674	HRV,Croatia (ISO 3166 trigram),High Resolution Visible,HS[edit]
1675	Hs,Hassium
1676	HSBC,The Hong Kong and Shanghai Banking Corporation
1677	HSC,Higher School Certificate
1678	HSM,High School Musical
1679	HSMAD,Human Science/Modeling and Analysis Data
1680	HSN,Home Shopping Network
1681	HSPH,Harvard School of Public Health
1682	HSS,Health Service Support,High-Speed Steel
1683	HSSI,High-Speed Serial Interface
1684	HST,see entry
1685	HSV,Herpes Simplex Virus,Hue Saturation Value (colour model),HT[edit]
1686	HTA,HyperText Application
1687	HTC-High Tech Computer Corporation,original name of the company now known simply as HTC,Horry Telephone Cooperative
1688	HTFU,Harden The Fuck Up
1689	HTH,Hope That Helps
1690	HTI,Haiti (ISO 3166 trigram)
1691	HTML,HyperText Markup Language
1692	HTR,Heated Towel Rail
1693	HTS,High-Temperature Superconducting wire
1694	HTTP,HyperText Transfer Protocol
1695	HU,Hungary (ISO 3166 digram; FIPS 10-4 country code)
1696	HUD,Head-Up Display,Housing and Urban Development
1697	HUHA,Head up his/her ass (Marine salute; probably a backcronym)
1698	HUN,Hungary (ISO 3166 trigram)
1699	HURD,Hird of Unix-Replacing Daemons (cf. Hird)
1700	HV,Upper Volta (ISO 3166 digram; obsolete 1984)
1701	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.
1702	HVAP,High Velocity Armour Piercing (ammunition)
1703	HVHF,High velocity human factors
1704	HVM,High Velocity Missile
1705	HVO,Upper Volta (ISO 3166 trigram; obsolete 1984)
1706	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
1707	HW,Hardware,High Water (nautical charts)
1708	HWM,Hardware morphing (computer graphics rendering)
1709	HX,IATA code of Hong Kong Airlines,Medical history,Hydrogen halide,Concept automobile by HUMMER
1710	HXB,The glycoprotein Tenascian C
1711	HYS,Harvard,Yale,Stanford (perennially named as the top three law schools in the U.S.)
1712	HZ,Haze (METAR Code)
1713	Hz,Hertz
1714	I,Iodine,One (in Roman numerals)
1715	IA,Iowa (postal symbol)
1716	IAAL,I Am A Lawyer
1717	IAB,International Association for Biologicals
1718	IACREOT,International Association of Clerks,Recorders,Election Officials,and Treasurers
1719	IAD,Ion Assisted Deposition
1720	IADS,Integrated Air Defence System
1721	IAEA,International Atomic Energy Agency
1722	IAF,{i} Industrial Areas Foundation
1723	IAFG,Information Assurance Focus Group
1724	IAI,International African Institute,Israel Aircraft Industries
1725	IANA,Internet Assigned Numbers Authority
1726	IANAL,I Am Not A Lawyer
1727	IAQ,Indoor air quality,Infrequently Asked Questions
1728	IAS,Image Assessment System
1729	IASIP,It's Always Sunny in Philadelphia
1730	IATA,International Air Transport Association
1731	IATF,International Automotive Task Force
1732	IATSE,International Alliance of Theatrical Stage Employees
1733	IAU,International Association of Universities,International Astronomical Union
1734	IAUC,International Astronomical Union Circular
1735	IAW,In Accordance With
1736	IB,International Baccalaureate
1737	IBA,Important Bird Area
1738	IBD,Inflammatory Bowel Disease
1739	IBDM,Information Based Decision Making
1740	IBDS,Integrated Biological Detection System,International Business Development Specialist
1741	IBM,International Business Machines
1742	IBRD,International Bank for Reconstruction and Development (part of the World Bank)
1743	IBS,Irritable Bowel Syndrome
1744	IC,Ice Crystals (METAR Code),Iceland (FIPS 10-4 country code),Integrated Circuit,[inner circle]
1745	ICANN,Internet Corporation for Assigned Names and Numbers
1746	ICAO,International Civil Aviation Organization
1747	ICBM,Intercontinental Ballistic Missile
1748	ICBN,International Code of Botanical Nomenclature
1749	ICC,Integrated Command and Control,International Criminal Court,International Cricket Council,Interstate Commerce Commission,International Chamber of Commerce
1750	ICD,Implantable Cardioverter-Defibrillator,Initial Capabilities Document,International Classification of Diseases
1751	ICE,In case of emergency
1752	ICES,International Council for the Exploration of the Sea
1753	ICF,Intelligent Community Forum
1754	ICM,Improved Conventional Munition,Integrated Collection Management,International Congress of Mathematicians,Iraq Campaign Medal
1755	ICMP,Internet Control Message Protocol
1756	ICNAF,International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1757	ICNI,Integrated Communication,Navigation,and Identification
1758	ICO,Intermediate Circular Orbit
1759	ICP,Inductively coupled plasma,Insane Clown Posse
1760	ICRAF,International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1761	ICRISAT,International Crops Research Institute for the Semi-Arid Tropics
1762	ICRL,Individual Component Repair List
1763	ICRS,International Celestial Reference System
1764	ICS,In-Country Support,Intelligence and Communications Systems,Interim Contractor Support
1765	ICSI,Intracytoplasmic Sperm Injection
1766	ICT,Information and communication technologies
1767	ICTH,Island Closest to Heaven/Hell Final Fantasy VIII
1768	ICV,Infantry Carrier Vehicle
1769	ICW,In Co-ordination With,Indonesia Corruption Watch,Infectious and Chemotherapeutic Waste,Insulating Concrete Wall,Integral Crystalline Waterproofing,Interactive Courseware
1770	ICYMI,In Case You Missed It
1771	ICZN,International Code of Zoological Nomenclature,International Commission on Zoological Nomenclature
1772	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)
1773	IDA,U.S. Institute for Defense Analyses,International Development Association (part of the World Bank
1774	IDC,International Data Corporation
1775	IDDI,I don't do initialisms (see irony)
1776	IDE,Integrated Development Environment,Integrated Drive Electronics
1777	IDeA,Improvement and Development Agency,the former name of Local Government Improvement and Development in the United Kingdom
1778	IDEA,Individuals with Disabilities Education Act (U.S.),International Data Encryption Algorithm,International Design Excellence Awards
1779	IDF,Israel Defense Forces,Intel Development Forum,International Dairy Federation
1780	IDGAF,I don't give a fuck
1781	IDK,I don't know
1782	IDKIBTI,I don't know,I'm black,that's it
1783	IDL,Interface Definition Language
1784	IDN,Indonesia (ISO 3166 trigram)
1785	IE,Indo-European languages,Internet Explorer,Ireland (ISO 3166 digram),Iced Earth
1786	IEA,International Energy Agency
1787	IEC,International Electrotechnical Commission
1788	IED,Improvised Explosive Device
1789	IELTS,International English Language Testing System
1790	IER,Information Exchange Requirement
1791	IET,Initial Entry Training
1792	IET,Institution of Engineering and Technology
1793	IETF,Internet Engineering Task Force
1794	IEW,Intelligence and Electronic Warfare
1795	IFAB,International Football Association Board
1796	IFAH,International Federation for Animal Health
1797	IFAP,International Federation of Agricultural Producers
1798	IFC,International Finance Corporation (part of the World Bank),Independent Film Channel
1799	IFF,Identification,Friend or Foe,Individually Fresh Frozen,International Flavors and Fragrances
1800	IFFN,Identification,Friend,Foe,or Neutral
1801	IFO,Identified Flying Object (see also UFO)
1802	IFOR,UN Implementation Force,Institute for Operations Research,International Fellowship of Reconciliation
1803	IFOV,Instantaneous Field of View
1804	IFPI,International Federation of Phonographic Industries
1805	IFRB,International Frequency Registration Board
1806	IFV,Infantry Fighting Vehicle
1807	IG,Inspector General
1808	IGNOU,Indira Gandhi National Open University
1809	IGS,International Ground Station
1810	IGY,Israeli Gay Youth,International Geophysical Year
1811	IHH,Idiopathic Hypogonadotropic Hypogonadism
1812	IHO,International Hydrographic Organization
1813	IHR,Institute for Historical Review
1814	IHSI,Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1815	II,Two (in Roman numerals)
1816	IICA,Inter-American Institute for Cooperation on Agriculture
1817	IIE,Innovative Interstellar Explorer
1818	III,Three (in Roman numerals)
1819	IIRC,If I Recall/Remember Correctly
1820	IISS,International Institute for Strategic Studies
1821	IIT,Illinois Institute of Technology,Indian Institutes of Technology,Indiana Institute of Technology
1822	IJN,Imperial Japanese Navy (World War II)
1823	IJWP,Interim Joint Warfare Publication
1824	IKEA,Ingvar Kamprad (the company's founder),Elmtaryd (the farm where he was born and raised),Agunnaryd (a village and parish near the farm)
1825	IL,Illinois (postal symbol),Israel (ISO 3166 digram)
1826	ILC,International Law Commission,International Linear Collider
1827	ILDS,Improved Landmine Detection System
1828	ILO,International Labour Organization
1829	ILRI,International Livestock Research Institute
1830	ILY,I Love You [pronounced ILL-LEE]
1831	IM,Isle of Man (FIPS 10-4 territory code),Instant Message (internet speech)
1832	IMA,Intermediate Maintenance Activity,Institute of Mathematics and Applications
1833	IMBD,International Migratory Bird Day
1834	IMDb,Internet Movie Database
1835	IME,In My Experience
1836	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)
1837	IML,International Mister Leather
1838	IMLAST,International Movement for Leisure Activities in Science and Technology,see MILSET
1839	IMNM,,Immune-mediated necrotizing myopathy a rare,but serious ADR of statins [1]
1840	IMNSHO,In My Not So Humble Opinion
1841	IMPAC,International Merchant Purchase Authorization Card
1842	IMPACT,International Medical Products Anti-Counterfeiting Taskforce
1843	IMPATT,IMPact Avalanche Transit Time diode
1844	IMPT,Institute of Maxillofacial Prosthetists and Technologists
1845	IMRL,Individual Material iness List
1846	IMRO-Internal Macedonian Revolutionary Organization,Irish Music Rights Organisation
1847	IMS,Information Management System,International Meat Secretariat,Ion Mobility Spectrometer
1848	IMSA,Illinois Mathematics and Science Academy,International Mind Sports Association,International Motor Sports Association
1849	IMsL,International Ms. Leather
1850	IMT,Integrated Management Tool
1851	IMU,International Mathematical Union
1852	IN,India (FIPS 10-4 country code; ISO 3166 digram),Indiana (postal symbol),Infantry
1853	In,Indium
1854	INA,Immigration and Nationality Act
1855	INAS,International Near-Earth Asteroid Survey
1856	INCITS,InterNational Committee for Information Technology Standards
1857	IND,India (ISO 3166 trigram)
1858	INDIGO,(U.S.) INtelligence DIvision Gaming Operation
1859	inet,the Internet
1860	INFORMS,(U.S.) Institute for Operations Research and the Management Sciences
1861	INFOSEC,Information Security
1862	INLA,Irish National Liberation Army
1863	INMARSAT,International Maritime Satellite organization
1864	INRI,Iesus Nazarenus Rex Iudæorum (Latin for: Jesus of Nazareth,King of the Jews)
1865	INRIA,Institut national de recherche en informatique et en automatique
1866	INS,Immigration and Naturalization Service
1867	InSAR,Interferometric synthetic aperture radar
1868	INST,Information Standards and Technology
1869	INTERFET,International Force for East Timor
1870	INTSUM,Intelligence Summary
1871	IO,British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1872	IOC,Initial Operational Capability,Intergovernmental Oceanic Commission,International Olympic Committee,International Ornithological Congress
1873	IOLTA,Interest on Lawyer Trust Accounts (charitable funding mechanism,especially for legal aid)
1874	IOM,Iowa,Ohio,Michigan (soybean origin),Institute of Medicine,International Organisation for Migration,Isle of Man
1875	IONA,Islands of the North Atlantic (alternate name for Great Britain,Ireland,the Isle of Man,and related islands)
1876	IOT,British Indian Ocean Territory (ISO 3166 trigram)
1877	IP,Clipperton Island (FIPS 10-4 territory code),Initial Point,Intellectual Property,Internet Protocol
1878	IPA,India Pale Ale,International Phonetic Alphabet,Isopropyl alcohol
1879	IPB,Intelligence Preparation of the Battlefield
1880	IPCC,Intergovernmental Panel on Climate Change,Independent Police Complaints Commission
1881	IPL,Inferior Parietal Lobule
1882	IPO,Initial Public Offering
1883	IPR,In Progress Review,Intellectual Property Rights,Intelligence Production Requirement
1884	IPT,Integrated Product/Project Team
1885	IPTS,Institute for Prospective Technological Studies
1886	IPTV,Internet Protocol TeleVision
1887	IPW,Interrogation of Prisoners of War
1888	IQ,Intelligence Quotient,Iraq (ISO 3166 digram)
1889	Ir,Iridium
1890	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)
1891	IRAD,Internal Research and Development
1892	IRAN,(I) Inspect and Repair As Necessary
1893	IRAS,Infrared Astronomical Satellite
1894	IRB,International Rugby Board
1895	IRBM,Intermediate Range Ballistic Missile
1896	IRC,International Red Cross,International Reply Coupon
1897	IREA,Intermountain Rural Electric Association
1898	IRINN,Islamic Republic of Iran News Network
1899	IRN,Iran (ISO 3166 trigram)
1900	IRO,International Refugee Organisation
1901	IRQ,Iraq (ISO 3166 trigram)
1902	IRS,U.S. Internal Revenue Service
1903	IRST,Infra-red Search and Track
1904	IS,Iceland (ISO 3166 digram),Israel (FIPS 10-4 country code)
1905	ISA,Individual Savings Account,Industry Standard Architecture,Instruction Set Architecture,International Seabed Authority
1906	ISAAA,International Service for the Acquisition of Agri-biotech Applications
1907	ISAF,International Sailing Federation,International Security Assistance Force
1908	ISAR,Inverse SAR (Synthetic Aperture Radar)
1909	ISB,Intermediate Staging Base
1910	ISBN,International Standard Book Number (ISO 2108)
1911	ISCCP,International Satellite Cloud Climatology Project
1912	ISCII,Indian Standard Code for Information Interchange
1913	ISDN,Integrated Services Digital Network
1914	ISEF,Intel International Science and Engineering Fair
1915	ISEN,Internet Search Environment Number
1916	ISF,Internal Security Force
1917	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
1918	ISIL,Islamic State of Iraq and the Levant
1919	ISL,Iceland (ISO 3166 trigram)
1920	ISLN,International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1921	ISM,Industrial,scientific or medical,Interstellar medium
1922	ISMB,International Society of Matrix Biologists
1923	ISMC,Intelligent Sounding Meaningless Conversation
1924	ISOGP,Indian Society of Orthodontics for General Practitioners [2]
1925	ISP,International Standardized Profile,Internet Service Provider,Information Systems Professional
1926	ISPE,International Society for Pharmacoepidemiology
1927	ISR,Intelligence,Surveillance and Reconnaissance,Israel (ISO 3166 trigram)
1928	ISRO,Indian Space Research Organisation
1929	ISS,International Shorebird Survey (North America),International Space Station
1930	ISSCR,International Society for Stem Cell Research
1931	ISSN,International standard serial number (ISO 3297)
1932	IST,Information System Technology,UCF Institute for Simulation and Training
1933	ISTAR,Intelligence,Surveillance,Target Acquisition,and Reconnaissance
1934	ISTC,Institute of Scientific and Technical Communications (UK)
1935	ISTS,Intel Science Talent Search
1936	ISU,Integrated Sight Unit,International Skating Union,IT[edit]
1937	IT,InferoTemporal (neurophysiology),Information Technology,Italy (FIPS 10-4 country code; ISO 3166 digram)
1938	ITA,Italy (ISO 3166 trigram)
1939	ITAG,Inertial Terrain-Aided Guidance
1940	ITALY,I'll Truly Always Love You
1941	ITAS,Improved Target Acquisition Sight
1942	ITC,InferoTemporal Cortex (neurophysiology)
1943	ITCZ,Intertropical Convergence Zone
1944	ITEC,Information Technology Exposition & Conference
1945	ITEMS,Interactive Tactical Environment Management System
1946	ITER,International Thermonuclear Experimental Reactor
1947	ITF,International Tennis Federation
1948	ITK,In The Know
1949	ITN,Independent Television News (British)
1950	ITS,Incompatible Time-sharing System,Individual Training Standards
1951	ITT,International Telephone and Telegraph (U.S.)
1952	ITTO,International Tropical Timber Organization
1953	ITU,Intent-to-Use,International Telecommunication Union (International Telegraph Union 1865-1932),IU[edit]
1954	IUCN,International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1955	IUSS,Integrated Undersea Surveillance System,Integrated Unit Simulation System,International Union of Soil Sciences
1956	IV,Côte d'Ivoire (FIPS 10-4 country code; from Ivory Coast),Four (in Roman numerals),IntraVenous (as in intravenous drip or intravenous therapy)
1957	IVD,Internet Video Device,intra vas device
1958	Iveco,Industrial Vehicles Corporation
1959	IVF,In Vitro Fertilisation
1960	IVI,Interchangeable Virtual Instrument
1961	IVIS,Inter-Vehicle Information System
1962	IVL,Inter-Visibility Line
1963	IVM,In Vitro [Oocyte] Maturation
1964	IVO,In Vicinity Of
1965	IW,Information Warfare
1966	IWARS,Infantry Warrior Simulation
1967	IWC,International Whaling Commission
1968	IWW,Industrial Workers of the World
1969	IX,Nine (in Roman numerals)
1970	IXT,IntraText digital library; IntraText lexical hypertext
1971	IY,Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1972	IZ,Iraq (FIPS 10-4 country code)
1973	J,Joule
1974	J1,Joint [Manpower &] Personnel Directorate
1975	J2,Joint Intelligence Directorate
1976	J2EE,Java 2 Platform,Enterprise ion
1977	J2ME,Java 2 Platform,Micro ion
1978	J2SE,Java 2 Platform,Standard ion
1979	J3,Joint Operations Directorate
1980	J4,Joint Logistics Directorate
1981	J5,Joint Strategic Plans & Policy Directorate
1982	J6,Joint Information Technology Directorate (Command,Control,Communications & Computer Systems)
1983	J7,Joint Operational Plans & Interoperability Directorate
1984	J8,Joint Force Structure,Resources,& Assessment Directorate
1985	JA,Japan (FIPS 10-4 country code)
1986	JAFT,Just A Field Test
1987	JAL,Japan Airlines
1988	JALLC,Joint Analysis and Lessons Learned Centre (NATO)
1989	JAM,Jamaica (ISO 3166 trigram)
1990	JAMA,Journal of the American Medical Association
1991	JANET,Joint Academic Network
1992	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)
1993	JATO,Jet-Assisted Take-Off
1994	JB,Jail Bait
1995	JB,Junior Branch
1996	JBFSA,Joint Blue Force Situational Awareness
1997	JCDB,Joint Common Data Base
1998	JCDS,Joint Chiefs of the Defence Staff
1999	JCIDS,Joint Capabilities Integration and Development System
2000	JCL,Job Control Language
2001	JCP,Java Community Process
2002	JCPM,Java Child Process Manager,Jesus Christ Prison Ministry
2003	JCS,Joint Chiefs of Staff
2004	JCW,Juggalo Championship Wrestling
2005	JDBC,Java Data Base Connectivity
2006	JDCC,UK Joint Doctrine and Concepts Centre,now the Development,Concepts,and Doctrine Centre,DCDC
2007	JDEM,Joint Dark Energy Mission
2008	JDL,Jewish Defense League
2009	JDM,Japanese domestic market,referring specifically to automobiles and parts,Java Data Mining,Joint design manufacturing,JE[edit]
2010	JE,Jersey (FIPS 10-4 territory code)
2011	JEB,James Ewell Brown (Stuart),John Ellis Bush
2012	JEDP,Jahwist,Elohist,Deuteronomist,Priestly (according to the documentary hypothesis,the sources of the Torah)
2013	JEE,Java Platform,Enterprise ion
2014	JEFX,Joint Expeditionary Force eXperiment
2015	JEPD,Jahwist,Elohist,Priestly,Deuteronomist,Jointly Exhaustive,Pairwise Disjoint
2016	JET,Joint European Torus
2017	JEZ,Joint Engagement Zone
2018	JFACC,Joint Force Air Component Commander
2019	JFACTSU,U.S. Joint Forward Air Control Training and Standards Unit
2020	JFC,Joint Force Commander
2021	JFK,John Fitzgerald Kennedy or the airport named after him.
2022	JFLCC,Joint Force Land Component Commander
2023	JFMCC,Joint Force Maritime Component Commander
2024	JFO,Journal of Field Ornithology
2025	JFSOCC,Joint Force Special Operations Component Commander
2026	JFTX,Joint Field Training Exercise
2027	JH,Japan Highway Public Corporation
2028	JH,Jharkhand (Indian state code)
2029	JI,Joint Implementation
2030	JIB,Joint Information Bureau
2031	JIC,Joint Intelligence Centre
2032	JINI,Java Intelligent Network Infrastructure
2033	JITC,Joint Interoperability Test Command
2034	JIVE,Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
2035	JJAP,Japanese Journal of Applied Physics
2036	JK,Jedi Knight,Just Kidding,Spanair (IATA airline designator),Jammu & Kashmir (Indian state code)
2037	JL,Japan Airlines (IATA airline designator)
2038	JLA,Justice League of America
2039	JM,Jamaica (FIPS 10-4 country code; ISO 3166 digram)
2040	JMS,Java Message Service
2041	JN,Jan Mayen Island (FIPS 10-4 territory code)
2042	JNI,Java Native Interface
2043	JNLP,Java Network Launch Protocol
2044	JO,Jordan (FIPS 10-4 country code; ISO 3166 digram)
2045	JOA,Joint Operations Area
2046	JOPES,Joint Operations Planning and Execution System
2047	JOR,Jordan (ISO 3166 trigram)
2048	JOTS,Joint Operations Tactical System
2049	JP,Japan (ISO 3166 digram),Justice of the Peace
2050	JPL,Jet Propulsion Laboratory
2051	JPN,Japan (ISO 3166 trigram)
2052	JPOW,Joint Project Optic Windmill
2053	JQ,Jetstar Airways (IATA airline designator),Johnny Quick,Johnston Atoll (FIPS 10-4 territory code),Jonny Quest,Joshua Quagmire
2054	JRA,Japanese Red Army,Joint Rear Area
2055	JRDF,Joint Rapid Deployment Forces
2056	JRE,Java Runtime Environment
2057	JREF,James Randi Educational Foundation
2058	JROC,Joint Requirements Oversight Council
2059	JROCM,JROC Memorandum
2060	JRRF,Joint Rapid Reaction Force
2061	JRSAI,Journal of the Royal Society of Antiquaries of Ireland
2062	JSAP,Japan Society of Applied Physics
2063	JSCSC,Joint Services Command and Staff College
2064	JSEAD,Joint Suppression of Enemy Air Defence (see SEAD)
2065	JSF,Joint Strike Fighter
2066	JSIMS,Joint Simulation System
2067	JSOA,Joint Special Operations Area
2068	JSOTF,Joint Special Operations Task Force
2069	JSP,JavaServer Page
2070	JSP,Joint Services Publication
2071	JSR,Java Specification Request
2072	JSS,Joint Support Ship Project
2073	JT,Johnston Atoll (ISO 3166 digram; obsolete 1986),Junior Technician (RAF)
2074	JTC,Joint Training Confederation
2075	JTF,Joint Task Force
2076	JTFEX,Joint Task Force Exercise
2077	JTLS,Joint Theater Level Simulation
2078	JTMD,Joint Theatre Missile Defence
2079	JTN,Johnston Atoll (ISO 3166 trigram; obsolete 1986)
2080	JU,Juan de Nova Island (FIPS 10-4 territory code)
2081	JUGFET,JUnction Gate Field-Effect Transistor
2082	JUICE,JUpiter ICy Moon Explorer
2083	JUO,Joint Urban Operations
2084	JW,Jehovah's Witnesses
2085	JWARS,Joint Warfare System (simulation)
2086	JWP,Joint Warfare Publication
2087	JY,Japanese Yen
2088	JZ,Joint Zone
2089	k,Kilo-
2090	K,picokelvin
2091	K9,Canine Police Unit
2092	Ka,Kamov Design Bureau
2093	kA,Kiloampere
2094	KAF,Kandahar Air Field
2095	KARNAC,Knowledge Aided Retrieval in Activity Context
2096	KARR,Knight Automated Roving Robot (Knight Rider character)
2097	KATUSA,Korean Augmentation To United States Army
2098	KAZ,Kazakhstan (ISO 3166 trigram)
2099	KBE,Knight Commander of the Order of the British Empire
2100	KBO,Kuiper Belt Object
2101	KBVB,Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2102	kC,Kilocoulomb
2103	KCL,King's College London
2104	KCS,Kansas City Southern Railway (AAR reporting mark)
2105	KEDO,Korean Peninsula Energy Development Organization
2106	KEN,Kenya (ISO 3166 trigram)
2107	KERA,Kentucky Education Reform Act (of 1990)
2108	kerma,Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2109	KESR,Kent and East Sussex Railway.
2110	kF,Kilofarad
2111	KFC,Kentucky Fried Chicken
2112	KFOR,UN Kosovo Force
2113	KFUPM,King Fahd University of Petroleum & Minerals
2114	KG,Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2115	KGO,Knight of the Guelphic Order of Hanover
2116	KGZ,Kyrgyzstan (ISO 3166 trigram)
2117	KH,Cambodia (ISO 3166 digram)
2118	kH,Kilohenry
2119	KHL,Kontinental Hockey League
2120	KHM,Cambodia (ISO 3166 trigram)
2121	KHz,Kilohertz
2122	Ki,Kibi
2123	KI,Kiribati (ISO 3166 digram)
2124	KIA,Killed In Action
2125	KIDS,Knowledge-based Integrated Design System
2126	KIR,Kiribati (ISO 3166 trigram)
2127	KIT,Keep In Touch
2128	KITECH,Korean Institute of Industrial Technology
2129	kJ,Kilojoule
2130	kK,Kilokelvin
2131	KKK,Ku Klux Klan
2132	kL,Kilolitre
2133	KL,Kuala Lumpur,Kerala (Indian state code)
2134	KLENOT,KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2135	KLOC,Kilo Lines Of Code
2136	KMR,Kwajalein Missile Range
2137	kN,Kilonewton
2138	KNA,Saint Kitts and Nevis (ISO 3166 trigram)
2139	KNVB,Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2140	KO,Knocked Out
2141	KOR,Republic of Korea (ISO 3166 trigram)
2142	KP,Kim Possible
2143	KPNO,Kitt Peak National Observatory
2144	Kr,Krypton
2145	kS,Kilosiemens
2146	KSC,Kennedy Space Center
2147	KSI,Killed or Seriously Injured
2148	KSM,Korean Service Medal,Khalid Sheikh Mohammed
2149	KSU,Kansas State University
2150	kT,Kilotesla
2151	KTS,Knight of the Tower and Sword (of Portugal)
2152	KU,Kuwait (FIPS 10-4 country code)
2153	KUL,Katholieke Universiteit Leuven (Flemish,Catholic University of Leuven)
2154	kV,Kilovolt
2155	KV,Kosovo
2156	KVM,Keyboard,Video,Mouse switch
2157	kW,Kilowatt
2158	KW,Kuwait (ISO 3166 digram)
2159	KWB,Kids' WB!
2160	KWT,Kuwait (ISO 3166 trigram)
2161	KX,Cayman Airways (IATA airline designator)
2162	KZ,Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2163	KZN,KwaZulu-Natal
2164	La,Lanthanum
2165	LAB,Logistics Assault Base
2166	LabVIEW,Laboratory Virtual Instrumentation Engineering Workbench
2167	LACMA,Los Angeles County Museum of Art
2168	LAD,Laser Aiming Device
2169	LADW,Local Air Defence Warning
2170	LAESI,Local Authority & Emergency Service Information
2171	LAN,Local Area Network
2172	LANL,Los Alamos National Laboratory
2173	LAO,Laos (ISO 3166 trigram)
2174	LARC,Livermore Advanced Research Computer (cf. LLNL)
2175	LARP,Live-Action Role-Playing
2176	LAS,McCarran International Airport (Las Vegas,Nevada)
2177	Laser,Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2178	LATA,Local Access Transport Area
2179	LATCH,Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2180	LAW,Light Antitank Weapon
2181	LB,Lebanon (ISO 3166 digram)
2182	LBN,Lebanon (ISO 3166 trigram)
2183	LBNL,Lawrence Berkeley National Laboratory
2184	LBR,Liberia (ISO 3166 trigram)
2185	LBS,Location-Based Services
2186	lbs,pounds (plural form of lb,see above)
2187	LBT,Large Binocular Telescope
2188	LBW,Leg Before Wicket
2189	LBY,Libya (ISO 3166 trigram)
2190	LC,Line of Contact,Saint Lucia (ISO 3166 digram)
2191	LCA,Saint Lucia (ISO 3166 trigram)
2192	LCC,Land Component Commander
2193	LCCP,Light Contingency Communications Package
2194	LCD,Liquid Crystal Display
2195	LCE,Leaving Certificate Examination,Load Carrying Equipment,London Commodity Exchange
2196	LCM,Least/Lowest Common Multiple
2197	LCol,Lieutenant-Colonel (Canada,UK)
2198	LCS,League of Legends Championship Series
2199	LD,Laser Designator,Limited Deployment,Line of Departure
2200	LDA,Lateral Drift Apparatus (paratroops)
2201	LDC,Lesser Developing/Developed Country
2202	LDL,Low-Density Lipoprotein
2203	LDV,Local Defence Volunteers (British Home Guard)
2204	LDW,Lane Departure Warning (ADAS)
2205	LE,Lebanon (FIPS 10-4 country code)
2206	LEC,Local Exchange Carrier
2207	LED,Light-Emitting Diode
2208	LEGAD,Legal Advice
2209	Legs,level emotion gad speed
2210	LEMOSS,Long-Endurance MObile Submarine Simulator
2211	LEN,Large Extension Node
2212	LEP,Large Electron-Positron collider
2213	LER,Loss-Exchange Ratio
2214	LEU,Low-Enriched Uranium
2215	LF,Low Frequency
2216	LFO,Low Frequency Oscillation / Oscillator
2217	LFTR,Liquid fluoride thorium reactor
2218	LG,Latvia (FIPS 10-4 country code)
2219	LGB,Lesbian,Gay,Bisexual,Laser-guided bomb,self-explanatory
2220	LGBT,Lesbian,Gay,Bisexual,Transgender
2221	LGLO,Love God,Love Others
2222	LGM,Little Green Men
2223	LGS,Landsat Ground Station
2224	LH,Lithuania (FIPS 10-4 country code),Luteinising Hormone
2225	LHC,Large Hadron Collider
2226	LHS,Left Hand Side
2227	LI,Fifty-one (in Roman numerals),Liberia (FIPS 10-4 country code),Liechtenstein (ISO 3166 digram)
2228	Li,Lithium
2229	LIBOR,London Interbank Offered Rate
2230	LIBS,Laser Induced Breakdown Spectroscopy
2231	LIE,Liechtenstein (ISO 3166 trigram)
2232	LIFO,Last In,First Out
2233	LIGO,Laser Interferometer Gravitational-Wave Observatory
2234	LINEAR,Lincoln Near-Earth Asteroid Research
2235	LISA,Laser Interferometer Space Antenna
2236	LIVE,Liquid Inertial Vibration Eliminator
2237	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)
2238	LJJ,Lord Justices of Appeal
2239	LK,Sri Lanka (ISO 3166 digram)
2240	LKA,Sri Lanka (ISO 3166 trigram)
2241	LKR4,Linkwitz-Riley 4th order (audio crossover type)
2242	LL,Land Line (telephone),Last Log,Late Latin,Left Limit,Lex Luthor (Superman character),Light Line,Limited Liability,Linked List,Little League
2243	LLAD,Low Level Air Defence
2244	LLB,Legum Baccalaureus (Latin: Bachelor of Laws)
2245	LLC,Limited Liability Company
2246	LLGC,Llyfrgell Genedlaethol Cymru (National Library of Wales),London Lesbian and Gay Centre
2247	LLLTV,Low-Light Level Television
2248	LLNL,Lawrence Livermore National Laboratory
2249	LLP,Limited Liability Partnership
2250	LLTI,Limiting Long-Term Illness,Long Lead Time Item
2251	LLTR,Low-Level Transit Route
2252	LMAO,Laughing My Ass Off (Internet shorthand)
2253	LMB,Lick My Balls
2254	LMN,Lifetime Movie Network
2255	LMS,Like My Status (Internet shorthand)
2256	LMS,London Mathematical Society,London,Midland and Scottish (Railway)
2257	LMV,() Light Motor Vehicle
2258	LNER,London and North Eastern Railway
2259	LNG,Liquefied Natural Gas
2260	LNO,Liaison Officer
2261	LO,Slovakia (FIPS 10-4 country code)
2262	LOA,Limit Of Advance
2263	LOD,Limit of Detection,see Detection limit
2264	LoD,Lines of Development (UK)
2265	LOFAR,Low Frequency Analysis and Recording
2266	LOGPAC,Logistics Package
2267	LOL,Laughing Out Loud (Internet shorthand)
2268	LOMEZ,Low Altitude Missile Engagement Zone
2269	LONEOS,Lowell Observatory Near-Earth-Object Search
2270	LOOGY,(p/a) Lefty One-Out GuY,a sometimes pejorative nickname for the left-handed specialist in baseball
2271	LORTID,LOng Range Target IDentification
2272	LOS,Line Of Sight
2273	LOSAT,Line-Of-Sight Anti-Tank (missile)
2274	LOTA,Licentiate of the Orthodontic Technicians Association
2275	LOTIS,Livermore Optical Transient Imaging System
2276	LOTS,Logistics Over-The-Shore
2277	LP,Linkin Park,Linkup Point,Listening Post,Long Playing record,Louisiana Pacific (cf. LP Field)
2278	LPC,Linear Predictive Coding
2279	LPD,Landing Platform Dock (Navy hull classification),Low Probability of Detection
2280	LPG,Liquefied Petroleum Gas (cf. LNG)
2281	LPI,Low Probability of Intercept
2282	LPS,Landsat Processing System,LipoPolySaccharide
2283	LQ,Palmyra Atoll (FIPS 10-4 territory code)
2284	Lr,Lawrencium
2285	LR,Liberia (ISO 3166 digram)
2286	LRC,Logistics iness Center
2287	LRF,Laser rangefinder,Low iness Forces
2288	LRGW,Long-Range Guided Weapon
2289	LRICBM,Limited Range ICBM
2290	LRIP,Low Rate Initial Production
2291	LRP,Logistics Release Point
2292	LRPE,Long-Range Planning Element
2293	LRS,Long Range Surveillance
2294	LRU,Line-Replaceable Unit
2295	LSE,Least Squares Estimate/Error,London School of Economics,London Stock Exchange
2296	LSI,Large-Scale Integration
2297	LSIF,Labour Sponsored Investment Fund
2298	LSND,Liquid Scintillator Neutrino Detector
2299	LSO,Lesotho (ISO 3166 trigram)
2300	LSST,Large Synoptic Survey Telescope
2301	LSVW,Light Support Vehicle,Wheeled
2302	LT,Lesotho (FIPS 10-4 country code),Lithuania (ISO 3166 digram)
2303	Lt,Lieutenant
2304	LtC,Lieutenant-Colonel (U.S.)
2305	LTC,Long-Term Costing
2306	Ltd,Limited
2307	LTDP,Long-Term Defence Plan
2308	LTG,Lieutenant General,Lightning (METAR Code)
2309	LTI,Linear Time-Invariant
2310	LTM,Acronym for Laughing To Myself
2311	LTP,Long-Term Potentiation
2312	LTU,Lithuania (ISO 3166 trigram)
2313	LU,Acronym Love You
2314	LU,Loonatics Unleashed
2315	Lu,Lutetium
2316	LUCA,Last Universal Common Ancestor
2317	LUG,Linux User Group
2318	LULU,Locally Unwanted Land Use (urbanism)
2319	LUT,Limited User Test (ing),Local User Terminal
2320	LUVW,Light Utility Vehicle,Wheeled
2321	LUX,Luxembourg (ISO 3166 trigram)
2322	LV,Las Vegas,Latvia (ISO 3166 digram),Launch Vehicle,Leading Vehicle,Leave,Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria
2323	LVA,Latvia (ISO 3166 trigram)
2324	LVAD,Left Ventricular Assist Device,Low-Velocity Airdrop
2325	LVEF,Left Ventricular Ejection Fraction
2326	LW,Land Warrior,Low Water (nautical charts)
2327	Lw,Lawrencium (obsolete 1963)
2328	LWR,Laser warning receiver
2329	LWRC,Land Warfare Resources Corporation
2330	LWS,Land Warrior System
2331	LX,Electrics (theatrical term)
2332	LX,Luxembourg (amateur radio ITU prefix),Swiss International Air Lines (IATA code)
2333	LY,Libya (FIPS 10-4 country code; ISO 3166 digram),Lithuania (amateur radio ITU prefix)
2334	LYAO,Laugh Your Ass Off
2335	LYLAS,Love You Like A Sister
2336	LZ,Bulgaria (amateur radio ITU prefix),Landing Zone
2337	M,Mega-,One thousand (in Roman numerals)
2338	m,Metre,Milli
2339	MA,Madagascar (FIPS 10-4 country code),Marijuana Anonymous,Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram)
2340	Ma,Megaannum
2341	mA,Milliampere
2342	MAA,Mathematical Association of America
2343	MAAC,Metro Atlantic Athletic Conference
2344	MACE,Multi-Agent Computing Environment
2345	MACHO,MAssive Compact Halo Object
2346	MADD,Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency,Multiply-Add
2347	MAF,Maintenance Action Form
2348	MAFF,Ministry of Agriculture,Forestry and Fisheries (various countries)
2349	MAGIC,Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2350	MAGNETAR,Metaprogrammable AGent NETwork ARchitecture
2351	MAGTF,Marine Air-Ground Task Force
2352	MALD,Miniature Air-Launched Decoy
2353	MANPADS,MAN-Portable Air Defence System
2354	MANPRINT,MANpower and PeRsonnel INTegration
2355	MAOI,Monoamine oxidase inhibitor
2356	MAPS,Monitoring Avian Productivity and Survivorship
2357	MAR,Morocco (ISO 3166 trigram)
2358	MarBEF,Marine Biodiversity and Ecosystem Functioning
2359	MARC,MAchine able Cataloging (often also defined as MAchine able Code),Mailing list ARChive,Massachusetts Animal Rights Coalition,Mid-America Regional Council
2360	MARCENT,United States Marine Forces Central Command
2361	MARFORCC,Marine Force Component Commander
2362	MARRS,Martyn Young,Alex Ayuli,Rudy Tambala,Russell Smith,and Steve Young (British electronic music act)
2363	MASAS,Monte Agliale Supernovae and Asteroid Survey
2364	Maser,Microwave Amplification by Stimulated Emission of Radiation
2365	MASH,Mobile Army Surgical Hospital
2366	MASINT,Measurement And Signature Intelligence
2367	MATREX,Modeling Architecture for Technology,Research & EXperimentation
2368	MAVS,Mobile Artillery Vehicle System
2369	MAW,Malawi (IOC trigram,but not FIFA or ISO 3166)
2370	MB,Manitoba (postal symbol),Martinique (FIPS 10-4 territory code),Medal of Bravery (Canada)
2371	MBA,Main Battle Area,Main Belt Asteroid,Masters of Business Administration
2372	MBBL,(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2373	MBCC,Migratory Bird Conservation Commission (U.S.)
2374	MBCS,Multi-Byte Character Set
2375	MBE,Member of the Order of the British Empire,Multistate Bar Examination (U.S.)
2376	MBI,Moody Bible Institute
2377	MBIDST,Member of the British Institute of Dental and Surgical Technologists
2378	MBM,Meat and Bone Meal
2379	mbsf,metres below sea floor,[1][2] a depth convention used in paleontology and oceanography
2380	MBT,Main Battle Tank
2381	MBTA,Massachusetts Bay Transportation Authority,Migratory Bird Treaty Act (U.S.)
2382	MBTI,Myers-Briggs Type Indicator
2383	mC,Millicoulomb
2384	MCA,Master of Computer Applications,Micro Channel Architecture,MultiChannel Analyzer,Music Corporation of America,the original name of the now-defunct MCA Inc.
2385	MCC,Marylebone Cricket Club,Mission Control Center,Motor Control Center,Movement Control Centre
2386	MCD,Minimal Cerebral Dysfunction,Minor civil division (U.S. Census term)
2387	MCDL,Model Composition Definition Language
2388	MCFT,Modified Compression Field Theory
2389	MCG,Melbourne Cricket Ground
2390	MCI,Microwave Communications,Inc.
2391	MCIS,Mellon Collie and the Infinite Sadness
2392	MCM,Mine Counter-Measures
2393	MCMV,Mine Counter-Measure Vessel
2394	MCNC,Microelectronics Center of North Carolina,Mixing Condensation Nucleus Counter
2395	MCP,Maintenance Collection Point,Male Chauvinist Pig
2396	MCR,My Chemical Romance
2397	MCSF,Marine Corps Security Forces
2398	MCT,Movement Control Team
2399	MCTIS,Mounted Co-operative Target Identification System
2400	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]
2401	Md,Mendelevium
2402	MDA,Main Defensive Action/Area,Moldova (ISO 3166 trigram),Muscular Dystrophy Association
2403	MDF,Main distribution frame,Medium-density fiberboard
2404	MDG,Madagascar (ISO 3166 trigram),UN Millennium Development Goal
2405	MDM,Michigan Dartmouth MIT telescope consortium,Master data management
2406	MDNA,Madonna's 12th studio album title (2012)
2407	MDO,Membership Driven Organisation
2408	MDP,Markov Decision Process
2409	MDT,Mountain Daylight Time (UTC-6 hours)
2410	MDV,Maldives (ISO 3166 trigram)
2411	ME,Maine (postal symbol),Mechanical engineer[ing],Medical examiner,Middle East,Middle East Airlines (IATA code),Memory Effect,Myalgic Encephalomyelitis
2412	Me,Messerschmitt
2413	MEA,Maine Educational Assessment,Middle East Airlines,Millennium Ecosystem Assessment,Minimum en route altitude,Mono-ethanol Amine,Multilateral Environmental Agreement
2414	MEAC,Mid-Eastern Athletic Conference (ME-ac)
2415	MEC,Maine Central Railroad,Manta,Ecuador (IATA location identifier),Model European Council,Mountain East Conference,Mountain Equipment Co-op
2416	MECC,Minnesota Educational Computing Consortium (later Corporation,dissolved 1999)
2417	MECCA,Milwaukee Exposition Convention Center and Arena,a former name for the sports venue now known as UW-Milwaukee Panther Arena
2418	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)
2419	MEDEVAC,Medical evacuation
2420	MEDLI,Mars Science Laboratory Entry,Descent,and Landing Instrumentation,Medical & Scientific Libraries of Long Island,Model for Effluent Disposal using Land Irrigation
2421	MEDS,Mission Essential Data Set
2422	MEF,U.S. Marine Expeditionary Force,Minimum essential facility,Mission essential force
2423	MEG,MagnetoEncephaloGraphy
2424	MEI,Matsushita Electric Industrial Co.,Ltd.
2425	MEK,Magyar Elektronikus Konyvtar,Message encryption key,Methyl ethyl ketone,Mujahideen al-Khalq
2426	MEL,Maya Embedded Language,Michigan Electronic Library
2427	MELT,Metallic Line/Loop Test (ing)
2428	MEM,Message Exchange Mechanism,Microelectromechanical
2429	MEMS,Microelectromechanical System
2430	MEO,Medium earth orbit,Most efficient organization
2431	MER,Mars Exploration Rover
2432	MERL,Mitsubishi Electric Research Laboratories
2433	MES,Manufacturing Execution Systems
2434	MES,Marconi Electronic Systems,Medium Edison screw
2435	MESSENGER,MErcury Surface,Space ENvironment,GEochemistry and Ranging
2436	MET,Meteorological,Middle European Time
2437	METAR,[Meteorological] Aviation Routine weather report
2438	METOC,Meteorological and Oceanographic
2439	MEU,U.S. Marine Expeditionary Unit,Maximum Expected Utility
2440	MEV,Medical Evacuation Vehicle,Musica Elettronica Viva
2441	MeV,Megaelectronvolt
2442	MEX,Mexico (ISO 3166 trigram)
2443	MEZ,Missile Engagement Zone
2444	MF,Mayotte (FIPS 10-4 territory code),Megafarad
2445	mF,Millifarad
2446	MFSB,Mother,Father,Sister,Brother (1970s Philadelphia studio musicians collective)
2447	MG,Machine Gun,Madagascar (ISO 3166 digram),Major General,Mongolia (FIPS 10-4 country code),Morris Garage
2448	Mg,Magnesium,Megagram
2449	MGB,Medium Girder Bridge,Motor Gun Boat
2450	MGM,Metro Goldwyn Mayer,Montgomery,Alabama (Airport Code)
2451	MGPAM,My Gym Partner's a Monkey
2452	MGS,Mobile Gun System
2453	MH,Marshall Islands (postal symbol; ISO 3166 digram),Megahenry,Montserrat (FIPS 10-4 territory code)
2454	mH,Millihenry
2455	MHC,Major Histocompatibility Complex
2456	MHHW,Mean Higher High Water (nautical charts)
2457	MHL,Marshall Islands (ISO 3166 trigram)
2458	MHLW,Mean Higher Low Water (nautical charts)
2459	MHRA,(UK) Medicines and Healthcare products Regulatory Agency
2460	MHW,Mean High Water (nautical charts)
2461	MHWN,Mean High Water Neaps (nautical charts)
2462	MHWS,Mean High Water Springs (nautical charts)
2463	MHz,Megahertz
2464	Mi,Mebi
2465	MIA,Missing In Action
2466	MIAA,Maryland Interscholastic Athletic Association,Massachusetts Interscholastic Athletic Association,Michigan Intercollegiate Athletic Association,Mid-America Intercollegiate Athletics Association
2467	MIB,Men In Black,Mint In Box (Internet auction/trading listings)
2468	MICLIC,Mine Clearing Line Charge
2469	MICOM,Missile Command
2470	MID,Midway Islands (ISO 3166 trigram; obsolete 1986)
2471	MIDAS,Man-machine Integration Design and Analysis System
2472	MIDI,Musical Instrument Digital Interface
2473	MIDS,Multi-Function Information Distribution System
2474	MIFG,Shallow Fog (METAR Code)
2475	MIKE,Monitoring of Illegal Killing of Elephants
2476	MIL,Man-In-the-Loop
2477	MILC,Mirrorless interchangeable-lens camera
2478	MILF,Mother I'd Like to Fuck
2479	MIMAROPA,Mindoro,Marinduque,Romblon,Palawan (a region in the Philippines)
2480	MIMOSA,MIcroMeasurements Of Satellite Acceleration
2481	MIMPT,Member of the Institute of Maxillofacial Prosthetists and Technologists
2482	MIP,Multilateral Interoperability Programme,Multiple Identity Poster
2483	MIRA,MILAN Infra-Red Acquisition (thermal sight)
2484	MIRV,Multiple Independent Reentry Vehicle
2485	MIS,Management Information Systems,Museum Information System
2486	MISREP,Mission Report
2487	MISSI,Multilevel Information System Security Initiative
2488	MIT,Massachusetts Institute of Technology,methylisothiazoline,Milli Istihbarad Teskilati (Intelligence service of Turkey)
2489	MITL,Man-In-The-Loop
2490	MITS,see entry
2491	MJ,Megajoule,Michael Jordan
2492	mJ,Millijoule
2493	MJD,Modified Julian Day
2494	mK,Millikelvin
2495	MKG,Michael Kidd-Gilchrist (American basketball player)
2496	MKS,Metre-Kilogram-Second (system of units),MKS Inc. software company
2497	MKSA,Metre-Kilogram-Second-Ampere (system of units)
2498	ML,Mali (FIPS 10-4 country code; ISO 3166 digram),Maximum Likelihood,Megalitre
2499	mL,Millilitre
2500	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
2501	MLB,Major League Baseball
2502	MLC,Member of the Legislative Council (in India)
2503	MLE,Maximum likelihood estimation
2504	MLHW,Mean Lower High Water (nautical charts)
2505	MLI,Mali (ISO 3166 trigram)
2506	MLK,Martin Luther King,Jr.
2507	MLL,Major League Lacrosse
2508	MLLW,Mean Lower Low Water (nautical charts)
2509	MLP,My Little Pony
2510	MLRS,Multiple-Launch Rocket System
2511	MLS,Major League Soccer,Multiple Listing Service
2512	MLSE,Maple Leaf Sports & Entertainment (owner of several Toronto-based sports teams),Maximum likelihood sequence estimation
2513	MLSR,Missing,Lost or Stolen Report
2514	MLT,Malta (ISO 3166 trigram)
2515	MLVW,Medium Logistics Vehicle,Wheeled
2516	MLW,Mean Low Water (nautical charts)
2517	MLWN,Mean Low Water Neaps (nautical charts)
2518	MLWS,Mean Low Water Springs (nautical charts)
2519	Mm,Megametre
2520	mm,Millimetre
2521	MMA,Mixed martial arts,Moving Mechanical Assembly
2522	MMC,Machinist's Mate,Chief (USN rating),Materiel Management Centre
2523	MMCM,Machinist's Mate,Master Chief (USN rating),Magnetic Mine Counter Measure
2524	MMCS,Machinist's Mate,Senior Chief (USN rating)
2525	MMEV,Multi-Mission Effects Vehicle
2526	MMI,Magical MonkeyZ Inc.
2527	MMI,Man-Machine Interface
2528	MMI,McLean Meditation Institute
2529	MMIC,McLean Meditation Institute Certified
2530	MMIC,Mindfulness & Meditation Instructor,Certified
2531	MMO,Massively Multiplayer Online (computer game)
2532	MMOR,Master of Management in Operations Research
2533	MMORPG,Massively multiplayer online role-playing game
2534	MMPR,Mighty Morphin Power Rangers
2535	MMR,Measles,Mumps and Rubella vaccine,Myanmar (ISO 3166 trigram)
2536	MMS,Multimission Modular Spacecraft
2537	MMU,Manchester Metropolitan University,Manned Manoeuvring Unit
2538	Mn,Manganese
2539	MN,Meganewton,Minnesota (postal symbol),Monaco (FIPS 10-4 country code),Mongolia (ISO 3166 digram)
2540	mN,Millinewton
2541	MNB,Multinational Brigade
2542	MND,Motor Neurone Disease,Multinational Division
2543	MNE,Montenegro (ISO 3166 trigram)
2544	MNG,Multiple-image Network Graphics,Mongolia (ISO 3166 trigram)
2545	MNMF,Multi-National Maritime Force
2546	MNP,Northern Mariana Islands (ISO 3166 trigram)
2547	MNS,Mission Needs Statement
2548	Mo,Molybdenum
2549	MOA,Museum of Art (Brigham Young University)
2550	MOAB,Massive Ordnance Air Blast (official),Mother Of All Bombs (slang)
2551	MOB,Man Over Board,Marching Owl Band,Movable Object Block
2552	MOC,Macedonian Orthodox Church,Measure Of Capability,Mission Operations Centre,My Own Creation (Lego)
2553	MOCAS,Mechanization Of Contract Administration Services
2554	MOD,Magneto-optical disc,Masters of Deception,Minimum Object Distance,Multiple Organ Dysfunction
2555	MoD,Ministry of Defence (United Kingdom) and various other countries
2556	modem,Modulator-Demodulator
2557	Moe,Marvel of entertainment
2558	MOE,Measure Of Effectiveness
2559	MOF,Ministry of Finance (Japan)
2560	MOFA,Ministry of Foreign Affairs (Japan)
2561	MOH, Medal of Honor,Music On Hold
2562	MOID,Minimum Orbital Intersection Distance
2563	MOJWA,Movement for Oneness and Jihad in West Africa
2564	MOLO,Mobile Other Licensed Operator (UK)
2565	MOM,Master's Degree in Oriental medicine
2566	MOM,Message Oriented Middleware
2567	MoM,Multiple of the median
2568	MoMA,Museum of Modern Art (NYC)
2569	MOND,Modified Newtonian Dynamics
2570	MOO,Measure Of Outcome
2571	MOPE,Ministry of Population and Environment (Nepal),Most Oppressed People Ever (politics)
2572	MOPP,Mission-Oriented Protective Posture
2573	MORP,Meteorite Observation and Recovery Project
2574	MOSFET,Metal-Oxide-Semiconductor Field-Effect Transistor
2575	MOSS,MObile Submarine Simulator,Moving Object Support System
2576	MOT,Ministry of Transport (UK)
2577	MOTA,Member of the Orthodontic Technicians Association
2578	MOTESS,Moving Object and Transient Event Search System
2579	MOTO,Mail Order / Telephone Order,Master of the obvious
2580	MOU,Memorandum Of Understanding
2581	MOVES,Modeling,Virtual Environments,and Simulation Institute
2582	MOW,Maintenance of way (also MW)
2583	MOZ,Mozambique (ISO 3166 trigram)
2584	MPA,Maritime Patrol Aircraft,Master of Public Administration
2585	MPa,Megapascal
2586	mPa,Millipascal
2587	MPAA,Motion Picture Association of America
2588	MPC,Minor Planet Center,Minor Planet Circular
2589	MPEC,Minor Planet Electronic Circular
2590	MPEG,Motion Pictures (Coding) Experts Group
2591	MPEV,Multi-Purpose Engineering Vehicle
2592	MPF,Maritime Prepositioning Force
2593	MPFC,Medial PreFrontal Cortex
2594	MPG,Miles Per Gallon
2595	MPMC,Medial PreMotor Cortex
2596	MPSI,Member of the Pharmaceutical Society of Ireland
2597	MPSoC,MultiProcessor System-on-Chip
2598	MPSRON,Maritime Propositioning Ship Squadron
2599	MQ,Martinique (ISO 3166 digram),Midway Islands (FIPS 10-4 territory code)
2600	MR,Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2601	MRAV,Multi-Role Armoured Vehicle
2602	MRBM,Medium Range Ballistic Missile
2603	MRC,Maintenance Requirements Card
2604	MRD,Motorized Rifle Division
2605	MRGW,Medium-Range Guided Weapon
2606	MRI,Magnetic Resonance Imaging
2607	MRL,Multiple Rocket Launcher
2608	MRPharmS,Member of the Royal Pharmaceutical Society (Great Britain)
2609	MRR,Maximum Rock and Roll,Minimum-Risk Route,My Restaurant Rules
2610	MRS,Magnetic Resonance Spectroscopy
2611	MRSA,Methicillin-resistant Staphylococcus aureus
2612	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)
2613	MRTFB,U.S. Major Range and Test Facility Base
2614	Ms,Megasecond
2615	mS,Millisiemens
2616	MSB,Main Support Battalion,Most Significant Bit (or Byte)
2617	MSD,Minimum Safe Distance
2618	MSDB,Multi Source Data Base
2619	MSE,Multiple Subscriber Element
2620	MSG,Message
2621	MSG,MonoSodium Glutamate,Madison Square Garden (either the 1879,1890,1925,or current versions of the venue)
2622	MSH,Medium Support Helicopter,Mount Saint Helens
2623	MSI,Micro-Star International,Multispectral imagery
2624	MSIE,Microsoft Internet Explorer,Master of Science in Industrial Engineering
2625	MSL,Mars Science Laboratory,Mean Sea Level,Missile
2626	MSLP,Mean Sea Level Pressure
2627	MSM,Mainstream media,Men who have sex with men,Mount St Mary's School
2628	MSN,Microsoft Network,Master of Science in Nursing
2629	MSNBC,Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2630	MSO,Multiple System Operator
2631	MSPA,Migrant and Seasonal worker Protection Act,MS Paint Adventures
2632	MSPB,Merit Systems Protection Board
2633	MSR,Main Supply Route,Module Service Record,Montserrat (ISO 3166 trigram),Motor Schlepp Regulung,Mountain Safety Research (outdoor supplies manufacturer)
2634	MSSA,Methicillin-susceptible Staphylococcus aureus
2635	MST,Madison Symmetric Torus,Mountain Standard Time (UTC-7 hours),MST3K or MST3k,Mystery Science Theater 3000
2636	MSU,Michigan State University,Montana State University,Mountain State University,Lomonosov Moscow State University (Russia,a.k.a. MGU),MT[edit]
2637	Mt,Meitnerium
2638	mT,Millitesla
2639	MTA,Metropolitan Transportation Authority (Boston) (now Massachusetts Bay Transportation Authority),Metropolitan Transportation Authority (New York)
2640	MTBF,Mean time between failures
2641	MTF,Magnetized target fusion,Medical Treatment Facility,Message Text Format,Modulation transfer function (optics)
2642	MtF,Male-to-female transsexual
2643	MTG,Magic: The Gathering
2644	MTP,Maritime Tactical Publication,Materiel Transfer Plan,Mission Training Plan
2645	MTQ,Martinique (ISO 3166 trigram)
2646	MTS,Maintenance Training System,Manitoba Telecom Services,Michigan Terminal/Timesharing System,Movement Tracking System,Multichannel television sound,Multi-Technical Services
2647	MTT,Methylthiazol tetrazolium (assay)
2648	MTV,MainosTeleVisio (Finnish commercial TV company),Music TeleVision
2649	MTVL,Mobile Tracked Vehicle,Light
2650	MTWS,MAGTF Tactical Warfare System
2651	MU,Mauritius (ISO 3166 digram),Oman (FIPS 10-4 country code; from Muscat)
2652	MUS,Mauritius (ISO 3166 trigram)
2653	MV,Maldives (FIPS 10-4 country code; ISO 3166 digram),Megavolt,Motor Vehicle,Motor Vessel
2654	mV,Millivolt
2655	MVC,Missouri Valley Conference
2656	MVFC,Missouri Valley Football Conference
2657	MVNO,Mobile virtual network operator
2658	MW,Maintenance of way (also MOW),Malawi (ISO 3166 digram),Medium Wave (radio),Megawatt,Mountain West (Conference) (formal initialism since July 2011)
2659	mW,Milliwatt
2660	MWESH,Machismo Wizards Extended SHelter (operating system)
2661	MWI,Malawi (ISO 3166 trigram)
2662	MWOA,Mount Wilson Observatory Association
2663	MWR,Morale,Welfare,and Recreation
2664	MWTB,Mounted Warfare Test Bed
2665	MX,Mail Exchange,Mexico (FIPS 10-4 country code; ISO 3166 digram),Missile eXperimental
2666	MY,Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2667	MYOB,Mind Your Own Business
2668	MYS,Malaysia (ISO 3166 trigram)
2669	MYT,Mayotte (ISO 3166 trigram)
2670	MZ,Mach-Zehnder (interferometer),Magnetic Azimuth,Move,Zig (Zero Wing),Mozambique (FIPS 10-4 country code; ISO 3166 digram)
2671	n,Nano
2672	N,Newton,Nitrogen,North
2673	N3F,National Fantasy Fan Federation
2674	NA,Namibia (ISO 3166 digram),Narcotics Anonymous,National Archives,Negative Acknowledge
2675	nA,Nanoampere
2676	Na,Sodium (Latin Natrium)
2677	NAA,N-Acetylaspartate
2678	NAAD,North American Air Defense
2679	NAAFI,Navy,Army and Air Force Institute (UK),No Ambition And Fuckall Interest (RSA army slang)
2680	NAAK,Mark I NAAK,Nerve Agent Antidote Kit
2681	NAAQS,National Ambient Air Quality Standards
2682	NAAWS,NATO Anti-Air Warfare System
2683	NACA,(U.S.) National Advisory Committee for Aeronautics (1915-1958,became NASA)
2684	NACC,North Atlantic Cooperation Council
2685	NACISA,NATO Communications and Information Systems Agency
2686	NACMA,NATO Air Command and Control System Management Agency
2687	NACRA,North America Caribbean Rugby Association (more specifically rugby union)
2688	NAEC,U.S. Naval Air Engineering Center
2689	NAF,NATO Architecture Framework,Naval Air Facility
2690	NAFERA,Native American Free Exercise of Religion Act
2691	NAFLD,NonAlcoholic Fatty Liver Disease
2692	NAFO,Northwest Atlantic Fisheries Organization
2693	NAFTA,North American Free Trade Agreement
2694	NAGPRA,Native American Graves Protection and Repatriation Act
2695	NAI,Named Area of Interest,Network Access Identifier
2696	NAICS,North American Industry Classification System
2697	NAIL,Neurotics Anonymous
2698	NAILS,National Airspace Integrated Logistics System
2699	NAIRU,Non Accelerating Inflation Rate of Unemployment
2700	NAK,Negative Acknowledge
2701	NAM,Namibia (ISO 3166 trigram)
2702	NAMBLA,North American Man-Boy Love Association
2703	NAMRL,Naval Aerospace Medical Research Laboratory
2704	NaN,Not A Number (computing)
2705	NAO,UK National Audit Office
2706	NAPS,Navy Acquisition Procedures Supplement
2707	NARA,(U.S.) National Archives and Records Administration
2708	NARAL,National Abortion Rights Action League
2709	NARDAC,Naval Regional Data Automation Center
2710	NARDIC,U.S. Navy Acquisition Research and Development Information Center
2711	NARPV,National Association for Remotely Piloted Vehicles
2712	NAS,National Academy of Sciences,National Air Space,National Audubon Society,Naval Air Station,New Attack Submarine
2713	NASCAR,National Association for Stock Car Auto Racing
2714	NASDAQ,National Association of Securities Dealers Automated Quotations
2715	NASED,National Association of State Election Directors [1][2]
2716	NASH,Non-Alcoholic Steatohepatitis
2717	NASP,National Aerospace Plane
2718	NASS,National Association of Secretaries of State [3]
2719	NatGeo,National Geographic
2720	NATO,National Association of Theatre Owners,North Atlantic Treaty Organisation
2721	NaUKMA,National University of Kyiv-Mohyla Academy
2722	NAV,Navigation[al]
2723	NAVCAMS,Naval Communications Area Master Station
2724	NAVCC,National Audio-Visual Conservation Center
2725	NAVCENT,Naval Forces U.S. Central Command
2726	NAVDAC,Naval Data Automation Command
2727	NAVEUR,Naval Forces U.S. European Command
2728	NAVFE,U.S. Naval Forces,Far East
2729	NAVFOR,Naval Force
2730	NAVMACS,Naval Modular Automatic Communication Subsystem
2731	NAVNET,Navy Network
2732	NAVS,Non-Cooperative Airborne Vector Scoring
2733	NAVSAT,Navigation Satellite
2734	NAVSPACECOM,U.S. Navy Space Command
2735	NAVSPASUR,U.S. Naval Space Surveillance System
2736	NAVSTAR,Navigation Satellite Timing And Ranging
2737	NAVTACNET,Navy Tactical Network
2738	NAWC,U.S. Naval Air Warfare Center
2739	Nb,Niobium
2740	NBA,National Basketball Association
2741	NBC,National Broadcasting Corporation,Nuclear,Biological,and Chemical
2742	NBCRS,NBC (Nuclear,Biological,and Chemical) Reconnaissance System
2743	NBIC,Nanotechnology,Biotechnology,Information Technology,Cognitive Science
2744	NBL,National Basketball League (Australia)
2745	NBT,Nitroblue tetrazolium (assay)
2746	nC,Nanocoulomb
2747	NC,Network Computer,New Caledonia (ISO 3166 digram),Node Centre,Non-Consensual,Normally Closed,North Carolina (postal symbol)
2748	NCA,National Command Authority
2749	NCAR,U.S. National Center for Atmospheric Research
2750	NCB,National Codification Bureau
2751	NCCAM,U.S. National Center for Complementary and Alternative Medicine
2752	NCCUSL,National Conference of Commissioners on Uniform State Laws (U.S.)
2753	NCDDR,U.S. National Center for the Dissemination of Disability Research
2754	NCES,U.S. National Center for Education Statistics,Net-Centric Enterprise Services
2755	NCI,U.S. National Cancer Institute
2756	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)
2757	NCL,New Caledonia (ISO 3166 trigram)
2758	NCLR,National Council of La Raza
2759	NCMO,No Commitment Make Out
2760	NCND,Non Circumvention & Non Disclosure,Neither Confirm Nor Deny,New Concept New Design
2761	NCO,Non-Commissioned Officer
2762	NCP,Net Contracted Purchases
2763	NCR,National Cash Register Co.
2764	NCTR,Non-Co-operative Target Recognition
2765	NCW,Network Centric Warfare
2766	Nd,Neodymium
2767	ND,Non-Disclosure,North Dakota (postal symbol)
2768	NDAA,U.S. National Defense Authorization Act
2769	NDBP,Non-Departmental Public Body (Scotland)
2770	NDCC,New Directions Counseling Center (Concord,California)
2771	NDP,New Democratic Party (Canada)
2772	NDS,Nintendo DS
2773	NDU,National Defense University (Washington,DC)
2774	NE,Nebraska (postal symbol),Niger (ISO 3166 digram),North-East
2775	Ne,Neon
2776	NEA,National Education Association (U.S. labor union),Near-Earth Asteroid,Nuclear Energy Agency (OECD)
2777	NEAT-Near-Earth Asteroid Tracking,,National Emergency Access Target (Au Health)
2778	NECTEC,National Electronics and Computer Technology Center (Thailand)
2779	NED,Netherlands (IOC and FIFA trigram,but not ISO 3166)
2780	NEI,National Eye Institute,Not Enough Information,Nuclear Energy Institute
2781	NEMS,National Energy Modeling System (USDOE-EIA)
2782	NEPA,National Environmental Policy Act
2783	NER,Niger (ISO 3166 trigram)
2784	NERICA,New Rice for Africa
2785	NESDIS,National Environmental Satellite,Data and Information Service
2786	NESP,NSA/CSS Enterprise Standards Program
2787	NET,National Educational Television
2788	NETCU,(UK) National Extremism Tactical Co-ordination Unit
2789	NETL,(US) National Energy Technology Laboratory
2790	NETWARS,Network Warfare Simulation
2791	NEWS,Navy Electronic Warfare Simulator,North,East,West,South
2792	NEX,Navy EXchange
2793	nF,Nanofarad
2794	NF,Norfolk Island (ISO 3166 digram)
2795	NFA,(U.S.) National Firearms Act (often used to refer to the guns and accessories regulated under this law),No-Fire Area
2796	NFC,National Football Conference,Near field communication
2797	NFER,National Foundation for Educational Research
2798	NFG,No Fucking Good
2799	NFHS,National Federation of State High School Associations
2800	NFI,Not F****** Interested
2801	NFK,Norfolk Island (ISO 3166 trigram)
2802	Nfld,Newfoundland
2803	NFPA,National Fluid Power Association (United States)
2804	NFT,No Further Text
2805	NG,Natural Gas,Next Generation,Niger (FIPS 10-4 country code),Nigeria (ISO 3166 digram)
2806	NGA,National Geospatial-Intelligence Agency,Nigeria (ISO 3166 trigram)
2807	NGATS,New Generation Army Targetry System
2808	NGH,Northern General Hospital
2809	NGO,non-governmental organization
2810	NGR,Nigeria (IOC trigram,but not ISO 3166 or FIFA)
2811	NGS,Naval Gunfire Support
2812	nH,Nanohenry
2813	NH,New Hampshire (postal symbol),New Hebrides (ISO 3166 digram; obsolete 1980),Vanuatu (FIPS 10-4 country code; from New Hebrides)
2814	NHANES,National Health and Nutrition Examination Survey
2815	NHB,New Hebrides (ISO 3166 trigram; obsolete 1980)
2816	NHB,No Holds Barred radio (Link)
2817	NHL,National Hockey League
2818	NHO,Næringslivets Hovedorganisasjon (Confederation of Norwegian Enterprises,a Norwegian employers' organisation)
2819	NHRA,National Hot Rod Association
2820	NHS,National Health Service (UK)
2821	NI,Nicaragua (ISO 3166 digram),Nigeria (FIPS 10-4 country code)
2822	Ni,Nickel
2823	NIAAA,U.S. National Institute on Alcohol Abuse and Alcoholism
2824	NIAG,NATO Industrial Advisory Group
2825	NIAID,National Institute of Allergies and Infectious Disease
2826	NIAMD,National Institute of Arthritis and Musculoskeletal Diseases
2827	NIB,New In Box (Internet auction/trading listings)
2828	NIBP,Non-invasive blood pressure monitor
2829	NIC,Network Interface Card,Nicaragua (ISO 3166 trigram)
2830	NicA,Nicotine Anonymous
2831	NICAP,National Investigations Committee on Aerial Phenomena
2832	NICE,UK. National Institute for Health and Clinical Excellence
2833	NICHD,National Institute of Child Health and Human Development [4]
2834	NICP,National Inventory Control Point
2835	NIDDK,National Institute of Diabetes and Digestive and Kidney Diseases
2836	NIDRR,National Institute on Disability Research and Rehabilitation
2837	NIEHS,National Institute of Environmental Health Sciences
2838	NIG,Niger (IOC and FIFA trigram,but not ISO 3166)
2839	NIH,National Institutes of Health,Not Invented Here
2840	NIIN,National Item Identification Number
2841	NIMA,National Imagery and Mapping Agency (became NGA)
2842	NIMBY,Not In My Back Yard (See NOME)
2843	NIMG,Not In My Generation
2844	NIMH,National Institute of Medical Herbalists,National Institute of Mental Health
2845	NIN,Nine Inch Nails (band)
2846	NIPR,National Institute of Polar Research (Japan)
2847	NIR,Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2848	NISAC,U.S. National Infrastructure Simulation and Analysis Center
2849	NISCAP,NSA Information System Certification and Accreditation Program
2850	NISER,National Institute of Science Education and Research
2851	NIST, National Institute of Standards and Technology
2852	NIT,National Invitation Tournament (U.S. college basketball),National Institutes of Technology (India)
2853	NITFS,National Imagery Transmission Format Standard
2854	NIU,Niue (ISO 3166 trigram)
2855	nJ,Nanojoule
2856	NJ,New Jersey (postal symbol)
2857	NJHS,National Junior Honor Society
2858	NJPW,New Japan Pro Wrestling
2859	nK,Nanokelvin
2860	NKA,No Known Allergies
2861	nL,Nanolitre
2862	NL,Netherlands (ISO 3166 and FIPS 10-4 country code digram),Newfoundland and Labrador (postal symbol)
2863	NLB,Non-Linear Battlefield
2864	NLD,Netherlands (ISO 3166 trigram)
2865	NLF,National Liberation Front (disambiguation)
2866	NLL,National Lacrosse League
2867	NLP,Natural Language Processing,Neuro-Linguistic Programming (pseudoscience)
2868	NLW,Non-Lethal Weapon
2869	nm,Nanometre
2870	NM,New Mexico (postal symbol)
2871	NMCI,Navy Marine Corps Intranet
2872	NMCS,Not Mission Capable Supply (SM&R code)
2873	NMD,U.S. National Missile Defense
2874	NMHNFG,Not Made Here,No Fucking Good
2875	NMN,No middle name
2876	NMR,Nuclear Magnetic Resonance
2877	NMSG,NATO Modelling and Simulation Group
2878	nN,Nanonewton
2879	NNE,North North-East
2880	NNSA,U.S. National Nuclear Security Administration
2881	NNW,North North-West
2882	NO,Nitric Oxide,Normally Open,Norway (ISO 3166 and FIPS 10-4 country code digram)
2883	No,Nobelium
2884	NOAA,U.S. National Oceanic and Atmospheric Administration
2885	NOAF,Norwegian Air Force
2886	NOAO,National Optical Astronomy Observatory
2887	NOC,UK. National Oceanography Centre
2888	NODEF,NATO Oceanographic Data Exchange Format
2889	NOGI,New Orleans Grande Isle (award for diving)
2890	NOLA,New Orleans,Louisiana (LA is the official postal code for Louisiana)
2891	NOLF,Navy OutLying Field
2892	NoMBO,Non-mine,Mine-like Bottom Object
2893	NOME,Not on Mars Either
2894	NOME,Not on Mars Either (see NIMBY)
2895	NOPA,National Office Products Alliance,National Office Products Association
2896	NOR,Norway (ISO 3166 trigram)
2897	NORCECA,North,Central America and Caribbean Volleyball Confederation
2898	NORELPREF,No religious preference
2899	NORTHAG,Northern Army Group
2900	NOS,Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme)
2901	NOSA,NATO OSI Security Architecture
2902	NOTAFLOF,No One Turned Away For Lack Of Funds
2903	NOW,National Organization for Women
2904	NP,National Permit,A permit in India for trucks so they can go anywhere in the nation
2905	Np,Neap tide (nautical charts),Neptunium
2906	NP,Nepal (ISO 3166 and FIPS 10-4 country code digram)
2907	NPB,Nippon Professional Baseball
2908	NPC,National Postgraduate Committee,National Provincial Championship (New Zealand rugby competition,now defunct),Navigation Planning Chart,Non-Player Character (role-playing games)
2909	NPCS,Non-Passenger Coaching stock (in Railways)
2910	NPD,Nationaldemokratische Partei Deutschlands (German)
2911	NPDI,New Product Development and Introduction
2912	NPG,Needline/Network Participation Group
2913	NPH,Normal Pressure Hydrocephalus
2914	NPL,National Priorities List,Nepal (ISO 3166 trigram)
2915	NPO,nothing by mouth
2916	NPOV,Neutral Point Of View
2917	NQ,Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2918	NQOCD,Not Quite Our Class,Dear (or Darling). (Upper-class English slang)
2919	NR,Nauru (ISO 3166 and FIPS 10-4 country code digram)
2920	NRA,National Rifle Association
2921	NRAO,National Radio Astronomy Observatory
2922	NRC,National Research Council (U.S.),Nuclear Regulatory Commission (U.S.)
2923	NRDC,(U.S.) Natural Resources Defense Council
2924	NREL,U.S. National Renewable Energy Laboratory
2925	NRK,Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2926	NRMP,National Resident Matching Program (U.S. medicine)
2927	NRO,U.S. National Reconnaissance Office
2928	NRT,Near Real Time
2929	NRTA,National Rat Terrier Association,National Retail Tenants Association,National Retired Teachers Association,Northwest Regional Transmission Association
2930	NRU,Nauru (ISO 3166 trigram)
2931	ns,Nanosecond
2932	nS,Nanosiemens
2933	NS,Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code)
2934	NSA,U.S. National Security Agency,Naval Support Activity,No Strings Attached
2935	NSABB,National Science Advisory Board for Biosecurity
2936	NSAID,Non-Steroidal Anti-Inflammatory Drug
2937	NSB,Norges Statsbaner (Norwegian State Railways)
2938	NSC,National Security Council
2939	NSDL,National Science Digital Library (US)
2940	NSG,National System for Geospatial-Intelligence
2941	NSN,National Stock Number
2942	NSNA,National Student Nurses' Association
2943	NSO,National Standardization Office (ABCA)
2944	NSS,(U.S.) Naval Simulation System
2945	NST,(UK) Nimrod Software Team
2946	NSTAC,National Security Telecommunications Advisory Committee
2947	NSW,New South Wales (postal symbol)
2948	nT,Nanotesla
2949	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)
2950	NTC,National Training Center,Negative Temperature Coefficient (thermistor)
2951	NTDS,Naval Tactical Data System
2952	NTP,Network Time Protocol
2953	NTR,Network Time Reference
2954	NTRA,National Thoroughbred Racing Association
2955	NTSB,National Transportation Safety Board
2956	NTSC,National Television Standards Committee (colloquially,Never Twice the Same Color)
2957	NTV,Non-Tactical Vehicle
2958	NTY,(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2959	NTZ,Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2960	NU,Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol)
2961	NUL,Null character (ASCII code of control character),National Urban League
2962	NUTS,Nuclear Utilization Target Selection
2963	NUWC,U.S. Naval Undersea Warfare Center
2964	nV,Nanovolt
2965	NVEOL,Night Vision and Electro-Optics Laboratory
2966	NVESD,CERDEC Night Vision and Electronic Sensors Directorate,Fort Belvoir,Virginia
2967	NVG,Night Vision Goggles
2968	NVL,Night Vision Laboratory
2969	nW,Nanowatt
2970	NW,North-West
2971	NW,Nuclear Weapon
2972	NWA,National Wrestling Alliance
2973	NWF,National Wildlife Federation
2974	NWFZ,Nuclear-Weapon-Free Zone
2975	NWHN,U.S. National Women's Health Network
2976	nWo,New World Order (see article for explanation of idiosyncratic capitalization)
2977	NWOAHM,New Wave of American Heavy Metal
2978	NWOBHM,New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2979	NWRA,National Wildlife Rehabilitators Association
2980	NWSL,National Women's Soccer League (U.S.)
2981	NWT,North-West Territories
2982	NXA,21st arcade game in the Pump It Up series
2983	NXD,Native XML
2984	NXE,New Xbox Experience
2985	NXG,New Cross Gate station
2986	NXL,National XBall League
2987	NXN,Nike Cross Nationals
2988	NY,New York (postal symbol)
2989	NYC,New York City
2990	NYHA,New York Heart Association
2991	NYO,National Youth Orchestra of Great Britain
2992	NYRA,National Youth Rights Association,New York Racing Association (horse racing)
2993	NYSE,New York Stock Exchange
2994	NZ,New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2995	NZC,New Zealand Cricket
2996	NZL,New Zealand (ISO 3166 trigram)
2997	NzL,Noze looan (online/event listings)
2998	NZOSS,New Zealand Open Source Society
2999	NZRU,New Zealand Rugby Union
3000	O,Oberst,Observer,Obstacle,Octal,Officer,Official,Oh,Operational,Operator,Oprah (magazine),Outstanding,Oxygen
3001	OA,Operational Analysis,Overeaters Anonymous
3002	OAC,On Approved Credit
3003	OAP,Old Age Pensioner (UK)
3004	OARSI,Osteoarthritis Research Society International
3005	OAS,Organization of American States
3006	OASIS,Objects and Agents for Information Systems and Simulation,Organization for the Advancement of Structured Information Standards
3007	OASIS,Ontario Agencies Supporting Individuals with Special Needs
3008	OASIS,Ontario Association of Sewage Industry Services
3009	OASP,Operational Analysis Support Paper/Plan
3010	OAU,Organization for African Unity
3011	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
3012	OBE,Officer of the Order of the British Empire
3013	OBS,Observation/Observer,Obsolete,Obstacle,Off Balance Sheet,Optical Burst Switching (IEEE),Organic Brain Syndrome,Organization(al) Breakdown Structure
3014	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
3015	OBX,Outer Banks (North Carolina)
3016	OC,Officer Commanding
3017	OCA,Observatoire de la Côte d'Azur,Offensive Counter-Air
3018	OCD,Obsessive-Compulsive Disorder
3019	OCFS,Oracle Cluster File System
3020	OCFS2,Oracle Cluster File System Release 2
3021	OCMCC,[2] Orchard County MCC
3022	OCN,Oncology Certified Nurse
3023	OCO,Oort Cloud Object
3024	OCOKA,Observation,Cover and concealment,Obstacles,Key terrain,and Avenues of approach (mnemonic)
3025	OCR,Optical Character Recognition
3026	OCS,see entry
3027	OD,Old Dragon,Ordnance Datum (nautical charts),Overdose
3028	ODAS,OCA-DLR Asteroid Survey
3029	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
3030	ODBC,Open DataBase Connectivity
3031	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]
3032	OEA,(U.S.) Office of Economic Adjustment
3033	OECD,Organisation for Economic Co-operation and Development (international)
3034	OED,Oxford English Dictionary
3035	OEG,Operation Exposure Guidance
3036	OEIS,On-Line Encyclopedia of Integer Sequences
3037	OEM,Original Equipment Manufacturer
3038	OFA,Occipital Face Area
3039	OFDA,U.S Agency for International Development's Office of Foreign Disaster Assistance
3040	OGC,Open Geospatial Consortium
3041	OGD,Other Government Department
3042	OGO,Other Government Organization
3043	OGX,OUARGLA,a petroleum state in the south of Algeria
3044	OH,Ohio (postal symbol)
3045	OHC,OverHead-Cam engine
3046	OHHLA,Original Hip-Hop Lyrics Archive
3047	OHIP,Ontario Health Insurance Plan
3048	OHMS,On Her (or His) Majesty's Service (also written: O.H.M.S.)
3049	OHP,Observatoire de Haute-Provence
3050	OHSS,Ovarian Hyperstimulation Syndrome
3051	OIC,Officer In Charge
3052	OIF,Operation Iraqi Freedom
3053	OIOC,Oriental & India Office Collections (in the British Library)
3054	OJ,Orange Juice,O.J. Simpson
3055	OJT,On-the-Job Training
3056	OKC,Oklahoma City
3057	OLED,Organic Light-Emitting Diode
3058	OLS,Operational Linescan System
3059	OM,Oman (ISO 3166 digram),Olympique de Marseille (French football club)
3060	OMA,Open Mobile Alliance,Operations & Maintenance,Army
3061	OMB,U.S. Office of Management and Budget,Ontario Municipal Board,Order of Mapungubwe in Bronze
3062	OMD,Orchestral Manoeuvres in the Dark (1980s pop group)
3063	OME,Osaka Mercantile Exchange
3064	OMFG,Oh My Fucking God
3065	OMG,Oh My God or Or My Gosh
3066	OMN,Oman (ISO 3166 trigram)
3067	OMNCS,U.S. Office of the Manager for the National Communications System
3068	OMP,Order of Mapungubwe in Platinum
3069	OMS,Order of Mapungubwe in Silver
3070	OMT,Object Model Template
3071	OMW,On My Way,Oh My Word
3072	ON,Ontario (postal symbol)
3073	ONC,Orthopaedic Nurse Certified
3074	ONG,Orthodontic National Group
3075	ONI,(U.S.) Office of Naval Intelligence
3076	Onna,Oniong,Nnung Ndem,and Awa,a Local Government Area in Nigeria
3077	ONS,Operational Needs Statement
3078	OO,Object Oriented,Over & Out
3079	OOAD,Object Oriented Analysis and Design
3080	OOBE,Out-of-body experience
3081	OOCL,Orient Overseas Container Line
3082	OOF,Out of Facility
3083	OOMF,One Of My Followers
3084	OOO,Out Of the Office
3085	OOP,Object-Oriented Programming,Out Of Print
3086	OOS,Occupational Overuse Syndrome,OneSAF Objective System,Open Operating System,Out Of Service
3087	OOTW,Operations Other Than War
3088	OPA,Other Procurement,Army
3089	OPAC,Online Public Access Catalogue
3090	OPCON,Operational control
3091	OPCW,Organisation for the Prohibition of Chemical Weapons
3092	OPEC,Organization of the Petroleum Exporting Countries
3093	OPFOR,Opposing force
3094	OPI,Office of Primary Interest,Open Prepress Interface
3095	OPINTEL,Operational Intelligence
3096	OPLAN,Operation plan (also OpPlan)
3097	OPORD,Operation order
3098	OPP,Ontario Provincial Police,Operational Planning Process,Other People's Property/Pussy/Penis (song)
3099	OPS,On-base plus slugging (baseball statistics),Operations
3100	OPTAR,Operational target
3101	OPV,Offshore Patrol Vessel
3102	ORAU,Oak Ridge Associated Universities
3103	ORB,Object Request Broker
3104	ORBAT,Order of Battle
3105	ORF,Operational iness Float
3106	ORISE,Oak Ridge Institute for Science and Education
3107	ORNL,Oak Ridge National Laboratory
3108	OS,Operating System
3109	Os,Osmium
3110	OSA,Order of St. Augustine
3111	OSCE,Organisation for Security and Cooperation in Europe
3112	OSDL,Open Source Development Labs
3113	OSE,Own Separate Entrance
3114	OSERS,U.S. Department of Education Office of Special Education and Rehabilitative Services
3115	OSETI,Optical SETI also Optical SETI
3116	OSHA,Occupational Safety and Health Administration
3117	OSIA,(U.S.) On-Site Inspection Agency
3118	OSM,One Saturday Morning
3119	OSPA,Operations Security Professional's Association site of OSPA
3120	OSPA,Oregon School Psychologists Association [3]
3121	OSRH,Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
3122	OSS,Office of Strategic Services (1942-1945,forerunner of CIA)
3123	OTB,Off The Ball,Offtrack Betting,OneSAF Testbed (a descendant of ModSAF)
3124	OTC,Over-The-Counter (drugs)
3125	OTD,Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
3126	OTEA,(U.S. Army) Operational Test Evaluation Agency
3127	OTI,Office of Transition Initiatives (United States Agency for International Development)
3128	OTOH,On The Other Hand
3129	OTSBH,Over The Shoulder Boulder Holder
3130	OTW,On The Way
3131	OTYBL,Over To You Blue Leader
3132	OTYRL,Over To You Red Leader
3133	OU,University of Oklahoma
3134	OVC,Overcast (METAR Code),Ohio Valley Conference
3135	OVV,Optically Visually Violent,or Optically Violently Variable,a type of quasar
3136	OW,Old Wykehamist
3137	OWN,Oprah Winfrey Network
3138	OX,IATA code for Orient Thai Airlines
3139	OXC,Optical cross-connect
3140	OXM,Official Xbox Magazine
3141	OXT,Oxytocin
3142	OZ,(?) Australia
3143	P,Peta,Phosphorus
3144	p,pico
3145	P2P,Peer-to-peer (networking)
3146	Pa,pascal,Protactinium
3147	pA,picoampere
3148	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)
3149	PAA,Position Area for Artillery
3150	PABX,Private Automated Branch eXchange (company phone system)
3151	PAC,Pan Africanist Congress,Partial Solar Calibrator,Patriot Advanced Capabilities,Political action committee, Primary Auditory Cortex
3152	PACOM,(U.S.) Pacific Command
3153	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
3154	PADI,Professional Association of Diving Instructors
3155	PAEK,PolyArylEtherKetone
3156	PAFC,Plymouth Argyle Football Club
3157	PAH,Polycyclic aromatic hydrocarbon
3158	PAHO,Pan American Health Organization
3159	PAI,PolyAmide Imide,Pre-Approval Inspection (pharma)
3160	PAK,Pakistan (ISO 3166 trigram)
3161	Pakistan,Punjab,Afghan states,Kashmir,sIndh,baluchiSTAN
3162	PAL,Phase Alternating Line (TV standard),Philippine Airlines
3163	PAM, Precision Attack Missile
3164	PAMELA,Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics,Pedestrian Accessibility and Movement Environment Laboratory
3165	Pamida,Patrick,Michael,and David,sons of the department store chain's co-founder Jim Witherspoon
3166	PANS,Pretty Advanced/Awesome Network Services (cf. POTS)
3167	PAR,Paraguay (IOC and FIFA trigram,but not ISO 3166)
3168	PARC,Palo Alto Research Center
3169	PAROS,Prevention of an Arms Race in Outer Space (treaty)
3170	PARP,(NATO Partnership for Peace) Planning And Review Process
3171	PARWIG,Power Augmented Ram Wing In Ground (aeroplane wing shape)
3172	PAS,See entry
3173	PASA,PolyAmide,Semi-Aromatic (Nylon)
3174	PASGT,Personnel Armor System,Ground Troops
3175	PASR,Personnel Accounting and Strength Reporting
3176	PATH,Port Authority Trans-Hudson
3177	PAWS,Phased Array Warning System,Progressive Animal Welfare Society
3178	PAYD,Pay As You Drive
3179	PAYE,Pay As You Earn
3180	Pb,Lead (Latin Plumbum)
3181	PB,PolyButylene
3182	PBA,Philippine Basketball Association,Professional Bowlers Association
3183	PBB,PolyBrominated Biphenyl
3184	PBCK,Problem Between Chair and Keyboard (computer help desk in-joke)
3185	PBD,PolyButaDiene
3186	PBDE,PolyBrominated Diphenyl Ether
3187	PBI,PolyBenzImidazole
3188	PBN,PolyButylene Naphthalate
3189	PBOH,Please Become Old History
3190	PBR,Pabst Blue Ribbon (beer brand),Professional Bull Riders
3191	PBRT,may stand for: Physically Based Raytracing,an open source software rendering system for physically correct image synthesis.
3192	PBS,Pharmaceutical Benefits Scheme (Australia),Public Broadcasting Service (U.S.),Public Broadcasting Services (Malta)
3193	PBT,PolyButylene Terephthalate
3194	PBX,Private Branch eXchange (company phone system)
3195	pC,picocoulomb
3196	PCAS,Planet-Crossing Asteroid Survey
3197	PCB,see entry
3198	PCC,NATO Partnership Coordination Cell,Posterior Cingulate Cortex,Pre-Command Course,Presidents Conference Committee
3199	PCCB,Porsche Ceramic Composite Brake
3200	PCCIP,President's Commission on Critical Infrastructure Protection
3201	PCE,PerChlorEthylene
3202	PCI,U.S. Pacific Islands Trust Territory (ISO 3166 trigram; obsolete 1986),Peripheral Component Interconnect (computer bus)
3203	PCIe,Peripheral Component Interconnect Express (computer bus)
3204	PCL,Passive Coherent Location
3205	PCMCIA,Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
3206	PCN,Pitcairn Islands (ISO 3166 trigram)
3207	PCP,phencyclidine,Pneumocystis jiroveci pneumonia (formerly Pneumocystis carinii),Probabilistically Checkable Proof
3208	PCPI,Physician Consortium for Performance Improvement (AMA)
3209	PCR,Polymerase chain reaction
3210	PCSSD,Pulaski County Special School District
3211	PCT,Pacific Crest Trail,Patent Cooperation Treaty
3212	PCTE,Portable Common Tool Environment,Punjab College of Technical Education
3213	PCZ,Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
3214	Pd,Palladium
3215	PD,per diem (Latin: (calculated) by the day),Point of Departure,Police Department,Postal District,Potential Difference,Principal Deputy,Public Domain,Privatdozent
3216	PD,Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
3217	PDA,Personal Digital Assistant,Predicted Drift Angle,Public Display of Affection,Push-Down Automaton
3218	PDD,Past Due Date,Presidential Decision Directive
3219	PDF,Panama[nian] Defense Forces (abolished 1990),Portable Document Format,Principal Direction of Fire
3220	PDG,President Director General,Product Development Group
3221	PDL,Pure Dumb Luck (Texan punk band)
3222	PDN,Pull-Down Network
3223	PDP,Programmable Data Processor,Performance Development Plan
3224	PDQ,Pre-Defined Queries (Siebel packages),Pretty Damn Quick
3225	PDRY,People's Democratic Republic of Yemen (obsolete since 1990)
3226	PDT,Pacific Daylight [Saving] Time (UTC-7 hours)
3227	PDU,Police Dog Unit,Power Distribution Unit,Protocol Data Unit
3228	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
3229	PE,Professional Engineer
3230	PEBCAC,Problem Exists Between Chair and Computer (IT help desk in-joke)
3231	PEBKAC,Problem Exists Between Keyboard and Chair (ditto)
3232	PEEK,PolyEtherEtherKetone
3233	PEET,Partnerships for Enhancing Expertise in Taxonomy
3234	PEI,Prince Edward Island,PolyEtherImide
3235	PEK,PolyEtherKetone
3236	PEPFAR,President's Emergency Plan For AIDS Relief
3237	PER,Peru (ISO 3166 trigram)
3238	perl,usually lower case Practical Extraction and Report Language
3239	PES,PolyEtherSulfone
3240	PEST,UK Public Engagement with Science and Technology
3241	PET, Personal Electronic Transactor,Pierre Elliott Trudeau,Positron Emission Tomography (as in PET scan),PolyEthylene Terephthalate (plastic),Preliminary English Test
3242	PETA, pentaerythritol triacrylate,People Eating Tasty Animals,People for the Ethical Treatment of Animals
3243	petawatt-
3244	PETE,PolyEthyleneTErephthalate
3245	PETP,PolyEthyleneTerePhthalate
3246	PF,French Polynesia (ISO 3166 digram),petafarad,Phenol Formaldehyde (resin),Power forward,a player position in Australian rules football,basketball,and ice hockey
3247	pF,picofarad
3248	PFD,Permanent Fund Dividend = personal flotation device
3249	PFE,Permanent Forest Estate
3250	PFO,Pissed,Fell Over (medical diagnosis in-joke)
3251	PfP,Partnership for Peace
3252	PG -
3253	Pg,petagram
3254	pg,picogram
3255	PGCE,Postgraduate Certificate in Education
3256	PGD,Pre-implantation Genetic Diagnosis
3257	PGENI,Pharmaco-Genetics for Every Nation Initiative
3258	PGH,Pre-implantation Genetic Haplotyping
3259	PGM,Precision-Guided Munition
3260	PGP,Pretty Good Privacy
3261	pH,parts of hydrogen (acidity/alkalinity index),picohenry
3262	PH,Passive Homing (missile guidance system),petahenry,Philippines (ISO 3166 digram),Probability of Hit,Public Health,Purple Heart
3263	PHA,PolyHydroxyAlkanoate,Potentially Hazardous Asteroid
3264	PHL,Philippines (ISO 3166 trigram)
3265	PHQ,Patient Health Questionnaire
3266	Pi,Pebi
3267	PI,PolyImide,PolyIsoprene,Private Investigator
3268	PIB,PolyIsoButylene
3269	PIC,Person In Charge
3270	PICNIC,Problem In Chair Not In Computer
3271	PICS,Private Investment Capital Subscription
3272	PID,Pelvic Inflammatory Disease,Plan Identification Number,Positive Identification,Procedural Identification,Procurement Identification Description
3273	PIF, Partners in Flight
3274	PIG,Pipeline Inspection Gauge
3275	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
3276	PIN,Personal Identification Number
3277	PINF,People In Need Foundation (Czech charitable organisation)
3278	PIPA, Program on International Policy Attitudes
3279	PIR,Priority Intelligence Requirement
3280	PIRA,Provisional Irish Republican Army
3281	PIREPS,Pilot Reports
3282	PITA,Pain In The Ass
3283	PJ,petajoule
3284	pJ,picojoule
3285	PJHQ,Permanent Joint Headquarters
3286	PKA,Previously Known As,Professionally Known As
3287	PKE,Partnership of Kindermusik Educators [1] &[2] & [2]
3288	PKI,Public Key Infrastructure (cryptography)
3289	PKU,Phenylketonuria
3290	PL,Ice Pellets (new style METAR Code),petalitre,Phase Line (Co-ordination Line),Poland (ISO 3166 and FIPS 10-4 country code digram)
3291	pL,picolitre
3292	PLAF, People's Liberation Armed Forces,Pluggable look and feel,Product Line Architecture Framework
3293	PLAID,Precision Location and Identification
3294	PLB,Personal Locator Beacon
3295	PLC,Public Limited Company (British)
3296	PLCC,Plastic Leaded Chip Carrier (electronics)
3297	PLD,Probable Line of Deployment
3298	PLEBS,People Lacking Everyday Basic Skills
3299	PLF,Parachute Landing Fall
3300	PLI,Position Location Information,Private Lands Initiative,Professional Liability Insurance
3301	PLIF,Planar Laser-Induced Fluorescence
3302	PLL,Phase-Locked Loop (electronics)
3303	PLM,Polarized Light Microscope/Microscopy
3304	PLMBA,Phospholipid Bilayer Microarray
3305	Pln,Platoon
3306	PLO,Palestine Liberation Organization
3307	PLOKTA,Press Lots Of Keys To Abort
3308	PLP,Platonic Life Partner
3309	PLS,Palletized Loading System,Personal Locator System
3310	PLUTO,Pipe Line Under The Ocean
3311	PLW,Palau (ISO 3166 trigram)
3312	Pm,petametre,Promethium
3313	pm,picometre
3314	PMC,Primary Motor Cortex
3315	PMI,Positive Material Identification
3316	PMID,PubMed Identifier
3317	PMMA,PolyMethylMethAcrylate
3318	PMS,Premenstrual Syndrome
3319	PMSL,Piss Myself Laughing (Internet shorthand)
3320	PMT,Premenstrual Tension (UK) (see Premenstrual Syndrome)
3321	PN,petanewton,Pitcairn Islands (ISO 3166 diagram)
3322	pN,piconewton
3323	PNAC,Project for the New American Century
3324	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
3325	PNG,Papua New Guinea (ISO 3166 trigram),Portable Network Graphics
3326	PNP,Partido Nuevo Progresista,Plug 'N' Play/Pray,Positive Negative Positive
3327	PNVS,Pilot Night Vision Sensor
3328	Po,Polonium
3329	PO,Post Office
3330	PO,Purchase Order
3331	POCD,Post-Operative Cognitive Dysfunction
3332	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
3333	pod,Plain Old Documentation
3334	POE,Perl Object Environment,(b) Port Of Embarkation (c) Polyol Ester (d) Power Over Ethernet
3335	POETS,Portable Occultation,Eclipse,and Transit electronic-camera System
3336	POFF,Plain Old Flat File
3337	POG,Passionfruit,Orange and Guava
3338	POGO,Project On Government Oversight
3339	POI,Program Of Instruction
3340	POK, Plane Of Knowledge
3341	POL,Petroleum,Oils and Lubricants,Poland (ISO 3166 trigram)
3342	POLAD,Political Advice
3343	POM,Program Objective Memorandum,PolyOxyMethylene
3344	POMDP,Partially observable Markov decision process
3345	PooS,Poo Sniffer (Internet shorthand)
3346	POP- Point of Presence,Post Office Protocol,Progesterone Only Pill
3347	POR,Portugal (FIFA and IOC trigram,but not ISO 3166),Proposed Operational Requirement
3348	POS- Point Of Sale terminal (retail industry transaction computers),Piece Of S**t
3349	POSH,Port Outbound Starboard Home (alleged)
3350	POSSLQ,Person of the Opposite Sex Sharing Living Quarters
3351	POT, Plane Of Tranquility
3352	POTS,Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3353	POV,Point of view
3354	POW,Prisoner of war
3355	PPA,Parahippocampal Place Area,PolyPhthalAmide
3356	PPASC,(U.S.) Plans and Program Analysis Support Center
3357	PPCLI,Princess Patricia's Canadian Light Infantry (regiment)
3358	PPG,Pittsburgh Plate Glass (the original name of the company now known as PPG Industries),The Powerpuff Girls
3359	PPLI,Precise Participant Location & Identification
3360	PPM,Project Planning and Management
3361	PPO,PolyPhenylene Oxide
3362	PPP,Point-to-Point Protocol,Purchasing Power Parity
3363	PPQ,Pulses Per Quarter (used in music programming,sequencers)
3364	PPQN,Pulses Per Quarter Note (ditto)
3365	PPQT,Pre-Production Qualification Test
3366	PPS,post postscriptum,Precise/Precision Positioning Service (GPS),PolyPhenylene Sulfide
3367	PPV,Pay-per-view
3368	PQ,Province of Québec (obsolete postal code,replaced by QC),Parti Québécois,PR[edit]
3369	PR,Public Relations
3370	Prb,Presbyter
3371	PRBO,Point Reyes Bird Observatory
3372	PRC,People's Republic of China
3373	PRD,CERDEC Product Realization Directorate
3374	PRFG,Partial Fog (METAR Code)
3375	PRI,Puerto Rico (ISO 3166 trigram)
3376	PRK,Democratic People's Republic of Korea (ISO 3166 trigram)
3377	PRM,Personnel iness Management
3378	PRT,Portugal (ISO 3166 trigram),Provincial Reconstruction Team
3379	PRY,Paraguay (ISO 3166 trigram)
3380	Ps,petasecond
3381	pS,picosiemens
3382	PSA,Paralysis Society of America,Pharmaceutical Society of Australia,Pressure-Sensitive Adhesive,Production Services Association,Prostate Specific Antigen,Public Service Announcement,Public Service Association
3383	PSC,Personal service corporation,Primary Somatosensory Cortex
3384	PSE,Palestinian Territory,Occupied (ISO 3166 trigram)
3385	PSG,Pacific Seabird Group
3386	PSI, Portable Source Initiative
3387	PSI,Pounds per square inch
3388	PSO,Peace Support Operations,Primary Standardisation Office (ABCA),Protocol Supporting Organization (of the ICANN)
3389	PSS,Personnel System Support
3390	PST,Pacific Standard Time (UTC-8 hours)
3391	PSU,Pennsylvania State University
3392	PsyOp,Psychological Operations
3393	PT,petatesla,Physical Training (in the Army),Portugal (ISO 3166 digram)
3394	pT,picotesla
3395	Pt,Platinum
3396	PTA,Parent-Teacher Association
3397	PTAL,Public Transport Accessibility Level
3398	PTAN -
3399	PTES,People's Trust for Endangered Species
3400	PTFE,PolyTetraFluoroEthylene
3401	PTI,Pardon the Interruption
3402	PTL,Patrol,Primary Target Line
3403	PTO,Patent and Trademark Office,Please Turn Over
3404	PTSD,Post-Traumatic Stress Disorder
3405	PU,Guinea-Bissau (FIPS 10-4 country code),Polyurethane,United States Miscellaneous Pacific Islands (ISO 3166 digram; obsolete 1986)
3406	Pu,Plutonium
3407	Pub,Publication
3408	PUG, PET Users Group
3409	PUN, Pull-Up Network
3410	PUP, Pull-Up Point
3411	PUR,Puerto Rico (IOC and FIFA trigram,but not ISO 3166)
3412	PUS,United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3413	PV,petavolt
3414	pV,picovolt
3415	PVC,Permanent Virtual Circuit,PolyVinyl Chloride,Premature Ventricular Contraction,Primary Visual Cortex
3416	PvE,Player versus Environment
3417	PvP,Player versus Player
3418	PVR,Personal Video Recorder
3419	PvZ,Plants vs. Zombies
3420	PW,Palau (postal symbol; ISO 3166 digram)
3421	pW,picowatt
3422	PWA,Pirates With Attitude
3423	PWBA,Pension and Welfare Benefits Administration
3424	PWC,PieceWise Constant (describing a mathematical function)
3425	PwC,PricewaterhouseCoopers (international accounting firm)
3426	PWL,PieceWise Linear (describing a mathematical function)
3427	PWLC,PieceWise Linear and Concave/Convex (describing a mathematical function)
3428	PWR,Pressurized Water Reactor
3429	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
3430	PX,Post eXchange
3431	PY,Paraguay (ISO 3166 digram),Person-Year,Portsmouth yardstick
3432	PYF,French Polynesia (ISO 3166 trigram)
3433	PYMWYMI,Put Your Money Where Your Mouth Is
3434	PZ,Panama Canal Zone (ISO 3166 digram; obsolete 1980),Pickup Zone
3435	Q1,First Quarter
3436	Q2,Second Quarter
3437	Q3,Third Quarter
3438	Q4,Fourth Quarter
3439	QA,Qatar (FIPS 10-4 country code; ISO 3166 digram)
3440	Qantas,Queensland And Northern Territory Aerial Services
3441	QAT,Qatar (ISO 3166 trigram)
3442	QB,Quarterback (football)
3443	QC,Quality Control,Québec (postal symbol),Queen's Counsel
3444	QCA,Qualifications and Curriculum Authority,Quality Council of Alberta
3445	QCD,Quantum ChromoDynamics
3446	QDR,Quadrennial Defense Review
3447	QEH,Queen Elizabeth's Hospital
3448	QFE,Quoted For Emphasis,Local ground level atmospheric pressure (aeronautical Q code)
3449	QK,Air Canada Jazz (IATA airline designator)
3450	QLD,Queensland,(Australia) (postal symbol)
3451	QM,Quality Management,Quantum Mechanics,Queen Mother
3452	QNH,Regional mean sea level atmospheric pressure (aeronautical Q code)
3453	QPR,Queens Park Rangers F.C. (English football team),Quality-Price Ratio (wine evaluation term)
3454	QPS,Quark Publishing System
3455	QR,Quake Rally,Qualitative Reasoning,Queensland Rail,Queen's Rangers,Quick Release,Quiet Riot,Qatar Airways (IATA airline designator)
3456	QSCAT,Quick Scatterometer satellite
3457	QSL,Québec Sign Language
3458	QSO,Quasi-Stellar Object
3459	QT,Quentin Tarantino,QuickTime,QuikTrip,QT (cute) Software
3460	Quango,(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3461	Quasar,Quasi-stellar radio source
3462	QUB,Queen's University Belfast
3463	QUIET,Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3464	QZ,Awair (IATA airline designator)
3465	R,Reinforcing,Right,Röntgen,Restricted (movie rating)
3466	R2I,Resistance to Interrogation
3467	R3P,Rearm,Refuel,and Resupply Point
3468	RA,Radio Australia
3469	Ra,Radium
3470	RA,Rain (METAR Code),Rear Area,Reinforced Alert,Republican Army,Right Ascension,Royal Artillery (UK),Royal Academy
3471	RAA,Royal Automobile Association,South Australia,Rear Assembly Area
3472	RAAF,Royal Australian Air Force
3473	Rabobank,Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3474	RAC,Royal Automobile Club (in the United Kingdom,renamed RAC plc in 2002)
3475	RACK,Risk Aware Consensual Kink (SM phrase)
3476	Racon,RAdar beaCON
3477	RADA,Royal Academy of Dramatic Art
3478	Radar,Radio Detection And Ranging
3479	RadB,Rad51/Dmc1 homologous protein
3480	RADB,Real America Database,Resource Assessment Database,Reunion Address DataBase,Rice Allelopathy Data Base,Routing Arbiter Database
3481	RADb,Routing Assets Data Base
3482	RADC,Region Air Defence Commander
3483	RAE,UK Royal Aircraft Establishment (-1991)
3484	RAF,Red Army Faction,Royal Air Force
3485	RAG,Raising and Giving,Rocket Antitank Grenade
3486	RAGBRAI,Register's Annual Great Bicycle Ride Across Iowa
3487	RAM,Rolling Airframe Missile,
3488	RAM,Royal Air Maroc
3489	Ramark,RAdar MARKer
3490	RAOC,Rear Area Operation Centre
3491	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
3492	RARDE,UK Royal Armament Research and Development Establishment (1962-1991)
3493	RARE,Rapid Acquisition with Relaxation Enhancement (MRI technique)
3494	RASC,Royal Army Service Corp,Former corps of British Army
3495	RATELO,Radiotelephone Operator
3496	Rb,Rubidium
3497	RB,Running Back (football)
3498	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.
3499	RBI,Runs Batted In
3500	RC,see entry
3501	RCA,Radio Corporation of America,Root Cause Analysis,Royal Canadian Artillery,Royal City Avenue (famous entertainment zone in Thailand)
3502	RCAF,Royal Canadian Air Force
3503	RCC,Rescue Co-ordination Centre
3504	RCCO,Royal Canadian College of Organists
3505	RCHA,Royal Canadian Horse Artillery (regiment)
3506	RCMP,Royal Canadian Mounted Police
3507	RCS,Radar Cross-Section,Reaction Control System,Revision Control System
3508	RD,Radio Disney
3509	RDA,Research,Development,and Acquisition,Recommended Daily Allowance (Nutrition)
3510	RDD,Radiological Dispersion Device
3511	RDECOM,(U.S. Army) Research,Development and Engineering Command
3512	RDM,Remotely Delivered/Deliverable Mine
3513	RDO,Rapid,Decisive Operation,Regular Day Off,Remote Data Objects
3514	RDT,Remote Digital Terminal
3515	RDV,Remote Detection Vehicle
3516	Re,Rhenium
3517	RE,Royal Engineers
3518	REACH,Registration,Evaluation,Authorisation and Restriction of Chemical Substances
3519	REACT,Remote Electronically Activated Control Technology
3520	REAM,Retired Educators Association of Minnesota
3521	RECCE,Reconnaissance
3522	REEF,Reef Environmental Education Foundation
3523	REME,Royal Electrical and Mechanical Engineers
3524	RERC,Rehabilitation Engineering Research Center
3525	RES,Radiation Exposure Status,Reserve
3526	RESNA,Rehabilitation Engineering and Assistive Technology Society of North America
3527	REU,Réunion (ISO 3166 trigram)
3528	RF,Radio Frequency,Receptive Field (neurophysiology)
3529	Rf,Rutherfordium
3530	RFC,Request for Comments,Royal Flying Corps (WWI precursor to RAF)
3531	RFD,Request for Documentation
3532	RFE,Request for Evaluation
3533	RFEF,Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3534	RFF,Right of First Refusal (legal term)
3535	RFI,y For Inspection,y For Issue,Request For Information,Radio Frequency Interference
3536	RFID,Radio Frequency IDentification
3537	RFL,Rugby Football League
3538	RFP,Request for Proposal
3539	RFQ,Request for Quotation
3540	RFT,Request for Tender
3541	RFU,Rugby Football Union
3542	RG,Republican Guard
3543	Rg,Roentgenium
3544	RGB,Red Green Blue (colour model)
3545	RGBI,Red Green Blue Intensity (ditto)
3546	Rh,Rhodium
3547	RH,Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3548	RHIC,Relativistic Heavy Ion Collider
3549	RHLI,Royal Hamilton Light Infantry (Canadian militia regiment)
3550	RHO,Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3551	RHS,Right Hand Side,Redland High School,Royal Horticultural Society,London
3552	RHU,Replacement Holding Unit
3553	RI,Rex et Imperator,Regina et Imperatrix King-Emperor
3554	RI,Rhode Island (postal symbol)
3555	RIAA,Recording Industry Association of America
3556	RIBA,Royal Institute of British Architects
3557	RIF,Reduction In Force (layoffs),Resistance Index for Frostbite,ing Is Fundamental
3558	RIFA,Red imported fire ant
3559	RILA,Retail Industry Leaders Association
3560	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
3561	RIMVS,Retinal Imaging Machine Vision System
3562	RINO,Republican In Name Only[1]
3563	RISC,Reduced Instruction Set Computer
3564	RISTA,Reconnaissance,Intelligence,Surveillance,and Target Acquisition (see also ISTAR)
3565	RJD,Reduced Julian Day
3566	RKBA,Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3567	RKI,Robert Koch Institute,German governmental research institute in Berlin
3568	RKO,Radio-Keith-Orpheum Pictures
3569	RL,Release Line,Real Life
3570	RLP,Recognised [Operating/Operational] Land Picture
3571	RLS,Restless Leg Syndrome
3572	RLY,Rally Point
3573	RM,see separate disambiguation page
3574	RMC,Robert Menzies College
3575	RMDA,Records Management and Declassification Agency
3576	RMP,Recognised [Operating/Operational] Maritime Picture
3577	RMS,Rate-Monotonic Scheduling,Richard M. Stallman,Root-Mean-Square,Royal Mail Ship (e.g. RMS Titanic)
3578	RN,Radio Netherlands
3579	Rn,Radon
3580	RN,Royal Navy,Registered Nurse (US)
3581	RNA,RiboNucleic Acid
3582	RNAD,Royal Naval Armaments Depot (UK)
3583	RNPS,Radio Network Planning System
3584	RNZ,Radio New Zealand
3585	RNZI,Radio New Zealand International
3586	RO,Range Only,Red Orchestra,Romania (ISO 3166 and FIPS 10-4 country code digram)
3587	ROA, Rate Of Ascent
3588	ROC,Receiver Operating Characteristic (statistics),Regional Operations Centre,Republic Of China,Roc-A-Fella Records,Regional Organisations of Councils
3589	ROD, Rate Of Descent,Record Of Decisions,Report Of Discrepancy
3590	ROE,Rules Of Engagement
3591	ROFLOL,Rolling On the Floor Laughing Out Loud
3592	ROH,Ring of Honor
3593	ROI,Return On Investment,Republic of Ireland.
3594	ROK, Republic of Korea
3595	ROM,-Only Memory,Refuel On the Move,Royal Ontario Museum
3596	ROP,Render Output Pipeline
3597	ROPE,Research Opportunity and Performance Evidence
3598	ROS,Reactive Oxygen Species
3599	ROU,Romania (ISO 3166 trigram)
3600	ROV,Remotely Operated Vehicle
3601	ROW,Right Of Way,Rest Of the World
3602	ROZ, Restricted Operations Zone
3603	RP,Philippines (FIPS 10-4 country code),Release Point,Role-Playing [relationship potential]
3604	RPA,Regional Plan Association
3605	RPD,Recognition-Primed Decision-making
3606	RPF,Rwandan Patriotic Front
3607	RPG,(US-CA) Regional Planning Group,Report Program Generator,Rocket Projectile Gun,Rocket-Propelled Grenade,Role-Playing Game
3608	RPL,Reverse Polish Lisp
3609	RPM,Records,Promotion,Music (expansion of the title of a former Canadian music magazine),Red Hat Package Manager
3610	rpm,revolutions per minute
3611	RPN,reverse Polish notation
3612	rps,revolutions per second
3613	RPV,Remotely Piloted Vehicle
3614	RQ,Puerto Rico (FIPS 10-4 territory code)
3615	RRB,Railroad Retirement Board
3616	RRN,Recurrence Rate Number
3617	RRP,Recurrent Respiratory Papillomatosis
3618	RRS,Racing Rules of Sailing
3619	RRSP,Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3620	RS,Russia (FIPS 10-4 country code)
3621	RSA,Regimental Support Area,Republic of South Africa,Rivest-Shamir-Adleman encryption,South Africa (IOC and FIFA trigram,but not ISO 3166)
3622	RSI,Repetitive Strain Injury
3623	RSJ,Rolled Steel Joist (construction)
3624	RSN,Real Soon Now (coined by author Jerry Pournelle)
3625	RSPB,(UK) Royal Society for the Protection of Birds
3626	RSPCA,Royal Society for the Prevention of Cruelty to Animals
3627	RSR,Required Supply Rate
3628	RSRE,UK Royal Signals and Radar Establishment (1976-1991)
3629	RSRI,Red Sands Research Institute
3630	RSS,Really Simple Syndication
3631	RSTA,Reconnaissance,Surveillance,and Target Acquisition
3632	RT,Real Time,Radio Telephone,Return to duty
3633	RTA,Road traffic accident (British)
3634	RTBF,Radio-Télévision belge de la Communauté française
3635	RTCA,RTCA,Inc.
3636	RTF,Rich Text Format
3637	RTFM, the Fucking/Fine Manual
3638	RTG,Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3639	RTGS,Royal Thai General System of Transcription,Real Time Gross Settlement
3640	RTI,Run-Time Infrastructure (Simulation)
3641	RTL,see entry
3642	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
3643	RTP,Real-time Transport Protocol
3644	RTS,see entry
3645	RTT,Round Trip Timing
3646	RTV,Rapid Terrain Visualization ACTD,Retro Television Network
3647	RU,Russia (ISO 3166 digram)
3648	Ru,Ruthenium
3649	RUC,Royal Ulster Constabulary
3650	RUS,Russia (ISO 3166 trigram)
3651	RUSI,Royal United Services Institute for Defence Studies
3652	RV,Reconnaissance Vehicle,Recreational Vehicle,Re-entry Vehicle,reciprocation void
3653	RW,Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3654	RWA,Rwanda (ISO 3166 trigram)
3655	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)
3656	RWH,Rain Water Harvesting
3657	RWR,Radar Warning Receiver
3658	RWS,Remote Weapon Station
3659	RX,Receive
3660	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
3661	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
3662	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
3663	SAD,Seasonal Affective Disorder,Situational Awareness Display,SADD — originally Students Against Drunk Driving,now Students Against Destructive Decisions (U.S. national school-related group)
3664	SADL,Situation Awareness Data Link (“saddle”),Structural Architecture Description Language
3665	SALT- Save A Life Today (SALT) Alert; Emergency Contact System,Southern African Large Telescope,Strategic Arms Limitation s
3666	SAM,Sequential-Access Memory,Sociedad Aeronáutica de Medellín,Surface-to-Air Missile
3667	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
3668	SART,Search and Rescue Transponder,Situational Awareness Rating Technique,SARU — South African Rugby Union
3669	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”)
3670	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”)
3671	SAW,Squad Automatic Weapon,Surface acoustic wave,SAWE — Society of Allied Weight Engineers,SB[edit],Sb — Antimony (Latin Stibium)
3672	SB,Sexy Bitch,Sexy Bastard,Sexy Boy (disambiguation),Solomon Islands (ISO 3166 digram),Special Warfare Boat Operator
3673	SBA,Santa Barbara Airport,Simulation-Based Acquisition,Sovereign Base Area,Student bar association,SBB — German for the Swiss Federal Railways
3674	SBNO,Standing but not operating (in reference to amusement parks)
3675	SBS,Special Boat Service,Special Broadcasting Service,Seoul Broadcasting System
3676	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)
3677	SCS,Scan Correlated Shift,Soil Conservation Service
3678	SD,Secure Digital (memory card format),Sheriff's department,Smoke/Decontamination,South Dakota (postal symbol),Sudan (ISO 3166 digram)
3679	SDHC,Secure Digital High Capacity
3680	SDXC,Secure Digital eXtended Capacity
3681	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
3682	SEN,Senegal (ISO 3166 trigram),Small Extension Node
3683	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
3684	SEU,Single Event Upset (solid state physics),Slightly Enriched Uranium,Special Evidence Unit,SF[edit]
3685	SF,Fleet Submarine (retired US Navy hull classification),San Francisco,Science fiction,South Africa (FIPS 10-4 country code),Speculative fiction,Special Forces
3686	SFA,Sales force automation,Saturated fatty acid,Scottish Football Association,Stephen F. Austin (State University),Sudan Football Association
3687	SG,Senegal (FIPS 10-4 country code),Singapore (ISO 3166 digram),Snow Grains (METAR Code),Study Group
3688	SH,Saint Helena (ISO 3166 digram),SONATRACH (Algerian petroleum company)
3689	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)
3690	SHO,Showtime (see also sho.com)
3691	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
3692	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
3693	SIP,Session Initiation Protocol,State Implementation Plan,System Improvement Program,Systematic Investment Plan,SIPP — Self-Invested Personal Pension
3694	SIRI,Service Interface for Real Time Information
3695	Siri,Speech Interpretation and Recognition Interface (Apple iOS software)
3696	SISO,Simulation Interoperability Standards Organization,Society of Independent Show Organizers,SIW — Simulation Interoperability Workshop,SIYSS — Stockholm International Youth Science Seminar,SJ[edit]
3697	SL,Sierra Leone (ISO 3166 and FIPS 10-4 country code digram),Start Line
3698	SLOC,Sea Lines Of Communication,Source Lines Of Code,SLORC — State Law and Order Restoration Council (of Burma)
3699	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)
3700	SME,Scan Mirror Electronics,Subject Matter Expert
3701	SMX-many,including: Server Macro Expansion,Solaris MINIX,Spatial multiplexing,Sulfamethoxazole; see entry
3702	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
3703	SO,Shared Object (Unix),Sheriff's Office,Significant other,Somalia (ISO 3166 and FIPS 10-4 country code digram)
3704	SOA,service-oriented architecture,Society of Actuaries,State of the art
3705	SOAP,Simple Object Access Protocol,Supplemental Offer and Acceptance Program (U.S. medical residency matching)
3706	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
3707	SoCon,Southern Conference (U.S. college sports)
3708	SOD,School Of Dentistry,Statement Of Difference[s],Statement Of Direction,Statement Of Documentation,Statement Of Duty/Duties
3709	SOE,Secret Of Evermore,Special Operations Executive (WWII British organization),State Of Emissions (EW)
3710	SOF- Special Operations Force,Status of Forces,SOFIA — Stratospheric Observatory For Infrared Astronomy
3711	SOM,Simulation Object Model,Somalia (ISO 3166 trigram),Sonar — SOund Navigation And Ranging
3712	SOP,Standing/Standard Operating Procedure,State of Play
3713	SOR,State Of iness,Statement Of Requirements
3714	Sp,Special,Spring tide (nautical charts),sine prole (Latin,“without offspring”)
3715	SR,Sound Reinforcement,Supply Route,Suriname (ISO 3166 digram),Sveriges Radio (Swedish Radio Ltd),SR — Sustained release of a drug
3716	SRG,SACEUR Rover Group,Special Republican Guard,SRGW — Short-Range Guided Weapon
3717	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)
3718	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)
3719	SSD,Solid-state drive,South Sudan (ISO 3166 trigram),SSDC — U.S. Space and Strategic Defense Command
3720	SSDD,Same Shit,Different Day,Single-Sided Double-Density (floppy disk)
3721	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
3722	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)
3723	SSR,Radar Picket Submarine (retired US Navy hull classification),Solid State Recorder
3724	SSRI,Selective Serotonin Reuptake Inhibitor,Social Systems Research Institute
3725	SSRN,Social Science Research Network,Nuclear-Powered Radar Picket Submarine (retired US Navy hull classification)
3726	SSS,Siding Spring Survey,Side Side Side (an acronym for remembering congruent triangles),Sigue Sigue Sputnik (band),S/SSM — Surface-to-Subsurface Missile
3727	ST,Saint Lucia (FIPS 10-4 country code),São Tomé and Príncipe (ISO 3166 digram)
3728	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
3729	STAR,Scientific and Technical Aerospace Reports (NASA),Simulation of Tactical Alternative Responses,Special Threat Analysis and Recognition
3730	STAT,Signal Transducers and Activators of Transcription (cell biology),Special Tertiary Admissions Test (Australia)
3731	STB,Surface Transportation Board[2]
3732	STFU,Southern Tenant Farmers Union,Stuff You[citation needed],STH — Sonic The Hedgehog
3733	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
3734	STP,São Tomé and Príncipe (ISO 3166 trigram),Standard Temperature and Pressure,STR — Short Tandem Repeat (DNA analysis),STRATCOM — United States Strategic Command
3735	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
3736	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)
3737	SWA,Secure Web Access,South-West Asia
3738	SWAC,Southwestern Athletic Conference
3739	SWALK,Sealed With A Loving Kiss,
3740	SWAN,System for Wearable Audio Navigation
3741	SWAP,Surface Waters Acidification Programme,
3742	SWAPO,South-West Africa People's Organisation,
3743	SWAT,Special Weapons And Tactics
3744	SWE — Sweden (ISO 3166 trigram)
3745	SWF,Single White Female
3746	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”)
3747	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)
3748	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
3749	T,Tera,Tesla,Tritium
3750	Ta,Tantalum
3751	TA,Target Acquisition,Teaching Assistant,Tera-ampere,Territorial Army (UK),Tristan da Cunha (ISO 3166 digram)
3752	TAA,Transparency Anti-Aliasing,Trans Australia Airlines
3753	TAACOM,U.S. Theater Army Area Command
3754	TAADCOORD,Theatre Army Air Defence Co-ordinator
3755	TAAR,Trace Amine-Associated Receptor
3756	TAC,U.S. Tactical Air Command (1946-1992)
3757	TACAN,Tactical Air Navigation
3758	TACC,Tactical Air Control Centre,(USAF) Tanker Airlift Control Center
3759	TACCO,Tactical Coordinator
3760	TACCSF,U.S. Theater Aerospace Command & Control Simulation Facility
3761	TACDAR,Tactical Detection And Reporting
3762	TACP,Tactical Air Control Party,Technology Applications Certification Program
3763	TACSOP,Tactical SOP (Standing Operating Procedure)
3764	TADIL,Tactical Digital Information Link
3765	TADSS,Training Aids,Devices,Simulators,and Simulations
3766	TAI,Target[ed] Area of Interest
3767	TAJ,Tom and Jerry
3768	TAJT,Tom and Jerry Tales
3769	TALES,Technical Advice and Lexicon for Enabling Simulation
3770	TAN,Tanzania (IOC and FIFA trigram,but not ISO 3166)
3771	TANJ,There Ain't No Justice (used as expletive in the Ringworld novels)
3772	TANP,Terrain-Aware Network Planner
3773	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)
3774	TAPPS,Texas Association of Private and Parochial Schools
3775	TARDIS,Time And Relative Dimension In Space (from Doctor Who)
3776	TARP,Transparency Accountability Rights for Parents (coined by Karen Plumridge,founder of Black Ribbon Gold Heart)
3777	TAS,Tasmania (postal symbol)
3778	TASER,Thomas A. Swift's Electric Rifle
3779	TASM,Tactical Air-to-Surface Missile
3780	TAT,Tourism Authority of Thailand
3781	TATP,TriAcetone TriPeroxide
3782	TATT,Tired All The Time (medical diagnosis in-joke)
3783	Tb,Terbium
3784	TB,Tuberculosis
3785	TBA,to be announced
3786	TBBPA,TetraBromoBisPhenol-A
3787	TBC,to be confirmed,to be continued
3788	TBF,to be fair
3789	TBGRI,Tropical Botanic Garden and Research Institute,India
3790	TBH,To Be Honest
3791	TBL,Turkish Basketball League
3792	TBM,Tactical Ballistic Missile,Theatre Ballistic Missile
3793	TBS,Turner Broadcasting System
3794	TBT,Tributyltin
3795	Tc,Technetium
3796	TC,Teracoulomb,Turks and Caicos (ISO 3166 digram),United Arab Emirates (FIPS 10-4 country code; from Trucial Coast States)
3797	TCA,Transformational Communications Architecture,Turks and Caicos (ISO 3166 trigram)
3798	TCAA,Top Counter-Assault Agents
3799	TCAS,Traffic Collision Avoidance System
3800	TCD,Chad (ISO 3166 trigram)
3801	TCG,Trusted Computing Group,Türkiye Cumhuriyeti Gemisi
3802	TCHD,Truck Cargo Heavy Duty
3803	TCL,Tool Command Language
3804	TCM,Turner Classic Movies
3805	TCP,Traffic Control Point,Transmission Control Protocol,Trichlorophenol
3806	TCU,Texas Christian University
3807	TCW,Tasty Coma Wife
3808	TCWMS,Tele-Center Workforce Management System
3809	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
3810	TDA,The Disney Afternoon
3811	TDL,Tactical Data Link
3812	TDM,Time-Division Multiplexing
3813	TDMA,Time Division Multiple Access
3814	TDP,Technology Demonstration Programme
3815	TDRS,Tracking Data and Relay Satellite
3816	TE,Tactical Exploitation,Testosterone to Epitestosterone ratio,Tight end (American football; position generally not used in modern Canadian football)
3817	Te,Tellurium
3818	TEAL,Tasman Empire Airways Limited
3819	Team,Together everyone achieves more
3820	TEAMS,The East African Marine System (fiber optic cable)
3821	TED,Technology Entertainment Design prize
3822	TEETH,Tried Everything Else,Try Homeopathy (medical diagnosis in-joke)
3823	TEL, Transporter,Erector and Launcher
3824	TELAR,Transporter,Erector,Launcher And Radar
3825	TENCAP,Tactical Exploitation of National Capabilities
3826	TERS,Tactical Event Reporting System
3827	TES,Tactical Event System
3828	TEST,Thesaurus of Engineering and Scientific Terms
3829	TEU,Twenty-foot equivalent unit (cargo capacity)
3830	TeVeS,Tensor Vector Scalar theory
3831	TF -
3832	TFMPP,Trifluorophenylmethylpiperazine
3833	TFR,Total Fertility Rate
3834	TFT,Thin-Film Transistor
3835	Tg,Teragram
3836	TG,Togo (ISO 3166 digram)
3837	TGA,Tonga (IOC and FIFA trigram,but not ISO 3166)
3838	TGIF,Thank God It's Friday,Toes Go In First
3839	TGO,Togo (ISO 3166 trigram)
3840	TGT,Target (also the ticker symbol for Target Corporation),Ticket Granting Ticket (computer security),Tyrese,Ginuwine,Tank,see TGT (group) for their collaboration
3841	TH,Terahenry,Thailand (ISO 3166 and FIPS 10-4 country code digram)
3842	Th,Thorium
3843	THA,Thailand (ISO 3166 trigram)
3844	THAAD, Terminal High Altitude Area Defence
3845	THEGENTRY,The High-End Group of Earth's New Technologies Research Yield
3846	THEL,Tactical High Energy Laser ACTD
3847	THG,Tetrahydrogestrinone
3848	TI,Tajikistan (FIPS 10-4 country code),Thermal Imaging,Threat Identification,Training Instructor,Texas Instruments
3849	Ti,Tebi,Titanium
3850	TIA,Total Information Awareness initiative
3851	TIA,Transient Ischemic Attack
3852	TIALD,Thermal Imaging and Airborne Laser Designation
3853	TIBS,Tactical Information Broadcast System
3854	TIC,Troops In Contact
3855	TIGERS,Topologically Integrated Geographic Encoding and Referencing System
3856	TIM,Technical Information Memorandum,Technical Interchange Meeting,Toxic Industrial Material,Telecom Italia Mobile
3857	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
3858	TINC,There Is No Cabal
3859	TINY,That Is,Not You (internet slang)
3860	TIP,Thermal Identification Panel
3861	tits,Toes in the Sand
3862	TJ,Tajikistan (ISO 3166 digram),Terajoule
3863	TJD,Truncated Julian Day
3864	TJK,Tajikistan (ISO 3166 trigram)
3865	TK,Terakelvin,Tokelau (ISO 3166 digram)
3866	TKBL,Türkiye 1. Kadınlar Basketbol Ligi,the Turkish-language name of the Turkish Women's Basketball League
3867	TKL,Tokelau (ISO 3166 trigram)
3868	TKM,Turkmenistan (ISO 3166 trigram)
3869	TL,Team Leader,Teralitre,Timor-Leste (ISO 3166 digram),ThermoLuminescence,TL;DR ,Too long; didn’t read.
3870	Tl,Thallium
3871	TLA,Three-Letter Abbreviation/Acronym
3872	TLAM,Tomahawk Land Attack Missile
3873	TLAR,That Looks About Right (chat shorthand),Transporter-Launcher And Radar
3874	TLATOJL,The Life and Times of Juniper Lee
3875	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)
3876	TLD,Thermoluminescent Dosimeter,Top-Level Domain
3877	TLM,Traditional Latin Mass,Tridentine Latin Mass,Transaction Lifecycle Management
3878	TLPM,T1 Line Performance Monitor
3879	TLS,Timor-Leste (ISO 3166 trigram),Times Literary Supplement,TM[edit]
3880	TM,Technical Manual,Theatre Missile,Thematic Mapper,trademark (often written in small superscript type: TM or ™),Turing machine,Turkmenistan (ISO 3166 digram) Tympanic Membrane
3881	Tm,Terametre
3882	TMAP, Texas Medication Algorithm Project
3883	TMC,The Movie Channel
3884	TMD,Theatre Missile Defence
3885	TMDK,The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3886	TMI,Too Much Information
3887	TMJ,TemporoMandibular Joint (syndrome)
3888	TMNT,Teenage Mutant Ninja Turtles
3889	TMO,Table Mountain Observatory,Television match official (rugby union)
3890	TMP,East Timor (ISO 3166 trigram; obsolete 2002),Temporary
3891	TMPG,Transparent Multi-Platform Gateway
3892	TMR,Twin Main Rotors (helicopter type)
3893	TMS,Transcranial Magnetic Stimulation
3894	TMT,Thirty Meter Telescope
3895	TMTOWTDI,There's Than One Way To Do It (from Perl)
3896	TN,Tennessee (postal symbol),Teranewton,Tonga (FIPS 10-4 country code),Tunisia (ISO 3166 digram)
3897	TNA,Total Nonstop Action Wrestling
3898	TNO,Trans-Neptunian Object
3899	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]
3900	TOA,Table Of Authorities,Total Obligation Authority (accounting)
3901	TOAD,Temporary,Obsolete,Abandoned,or Derelict site (urbanism),Towed Optical Assessment Device
3902	TOBS,Time of OBServation
3903	TOGS,Thermal Observation Gunnery Sight
3904	TOMS,Total Ozone Mapping Spectrometer (satellite instrument)
3905	TON,Tonga (ISO 3166 trigram)
3906	TOT,Time On Target
3907	TPE,Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3908	TPI,The point is
3909	TPO,Thrombopoietin
3910	TPS,The Pennington School
3911	TPTB,The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3912	TQ,Top Qualifier (similar to Pole Position in car racing)
3913	TRA,Technology iness Assessment
3914	TRAC,(U.S. Army) TRADOC Analysis Center
3915	TRACON,Terminal Radar Approach Control
3916	TRADOC,(U.S. Army) Training and Doctrine Command
3917	TRAIN,Tourist Railway Association,Inc.
3918	TRANSCOM,U.S. Transportation Command
3919	TRAP,Tactical Receive equipment and related Applications
3920	TRASANA,TRADOC Systems Analysis Agency
3921	TRD,Towed Radar Decoy
3922	TRIGAT,Third Generation Antitank (missile)
3923	TRL,Technology readiness level
3924	TRP,Target Reference Point,Time of Reporting
3925	Trp,Troop
3926	TRU,Transuranic
3927	TRUEX,Training in Urban Environment Exercise
3928	TRW,Thompson Ramo Wooldridge Inc.
3929	Ts,Terasecond
3930	TSEC,Transmission Security Encryption Code
3931	TSL,Transportation Security Laboratory
3932	TSR,Terminate and Stay Resident
3933	TSSIA,The Subject Says It All
3934	TTCT,Torrance Tests of Creative Thinking
3935	TTFN,Ta Ta For Now
3936	TTO,Trinidad and Tobago (ISO 3166 trigram)
3937	TTTEAF,Thomas the Tank Engine and Friends
3938	TTY,TeleTYpewriter (Printer)
3939	TTYL,To You Later (Internet slang)
3940	TTZ,Tetrazolium
3941	TUC,Trades Union Congress
3942	TUG,TeX Users Group
3943	TUN,Tunisia (ISO 3166 trigram)
3944	TUNS,Technical University of Nova Scotia
3945	TUR,Turkey (ISO 3166 trigram)
3946	TUSK,Tank Urban Survival Kit
3947	TUV,Tuvalu (ISO 3166 trigram)
3948	TVA,Tennessee Valley Authority
3949	TVR,TreVor (Wilkinson) Racing
3950	TVS,Tornado vortex signature
3951	TWAIN,Technology Without An Interesting Name
3952	TWE,Trans World Entertainment
3953	TWI,The Welding Institute
3954	TWN,Republic of China (Taiwan) (ISO 3166 trigram)
3955	TWP,Technical Working Paper
3956	TXV,Thermostatic Expansion Valve
3957	TZ,Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3958	TZA,Tanzania (ISO 3166 trigram)
3959	TZC,Tetrazolium chloride
3960	U,Uranium
3961	UA,Ukraine (ISO 3166 digram) Unit of Action
3962	UAAP,University Athletic Association of the Philippines
3963	UAB,University of Alabama at Birmingham
3964	UAE,United Arab Emirates (also IOC and FIFA trigram,but not ISO 3166)
3965	UBIGEO,Ubicación Geografica (Spanish for Geographical Location)
3966	UCBSA,United Cricket Board of South Africa
3967	UCF,University of Central Florida
3968	UCLES,University of Cambridge Local Examinations Syndicate
3969	UCR,University of Costa Rica
3970	UCS,Union of Concerned Scientists
3971	UDAS,Uppsala-DLR Asteroid Survey
3972	UDTS,Uppsala-DLR Trojan Survey
3973	UE,Unit of Employment
3974	UEFA,Union of European Football Associations
3975	UESAC,Uppsala-ESO Survey of Asteroids and Comets
3976	UFC,Ultimate Fighting Championship
3977	UG,Uganda (ISO 3166 and FIPS 10-4 country code digram)
3978	UGA,Uganda (ISO 3166 trigram)
3979	UGV,Unmanned Ground Vehicle
3980	UHF,Ultra High Frequency
3981	UHMW,Ultra-High Molecular Weight
3982	UHRB,Ultra-High Resolution Building (simulation)
3983	UIC,University of Illinois at Chicago
3984	UID,User ID
3985	UIL,University Interscholastic League (governing body for most interscholastic activities,notably sports,in Texas public high schools)
3986	UIUC,University of Illinois at Urbana-Champaign
3987	UJTL,Universal Joint Task List
3988	UK,United Kingdom (also FIPS 10-4 country code),University of Kentucky
3989	UKIP,United Kingdom Independence Party
3990	UKR,Ukraine (ISO 3166 trigram)
3991	UL,Underwriters Laboratories
3992	ULF,Ultra Low Frequency
3993	UM,U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3994	UMBC,University of Maryland,Baltimore County
3995	UMC,United Microelectronics Corporation,University of Missouri-Columbia
3996	UMCP,Unit Maintenance Collection Point
3997	UMES,University of Maryland Eastern Shore
3998	UMI,U.S. Minor Outlying Islands (ISO 3166 trigram)
3999	UMIST,University of Manchester Institute of Science and Technology
4000	UML,Unified Marxist-Leninist Communist Party of Nepal,Unified Modeling Language,University of Massachusetts Lowell,User-Mode Linux
4001	UMTS,Universal Mobile Telecommunications System
4002	UN,United Nations
4003	UNABOM,University and airline bomber (FBI case name)
4004	UNAIDS,(i/a) Joint United Nations Programme on HIV/AIDS
4005	UNAMSIL,United Nations Mission in Sierra Leone
4006	UNCF,United Negro College Fund
4007	UNCLOS,United Nations Convention on the Law of the Sea
4008	UNCSGN,United Nations Conference on the Standardization of Geographical Names
4009	UNCTAD,United Nations Conference on Trade and Development
4010	UNDCP,United Nations Drug Control Programme
4011	UNDE,(i/a) Union of National Defence Employees (Canada)
4012	UNDP,United Nations Development Programme
4013	UNEP,United Nations Environment Programme
4014	UNESCO,United Nations Educational,Scientific and Cultural Organization
4015	UNFCCC,United Nations Framework Convention on Climate Change
4016	UNFICYP,United Nations Peacekeeping Force in Cyprus
4017	UNGEGN,United Nations Group of Experts on Geographical Names
4018	UNHCR,United Nations High Commission (er) for Refugees
4019	UNICEF,United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
4020	UNICRI,United Nations Interregional Crime and Justice Research Institute
4021	UNIDO,United Nations Industrial Development Organization
4022	UNIFEM,United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
4023	UNIS,University of Surrey,Guildford,England
4024	UNLV,University of Nevada,Las Vegas
4025	UNMIK,United Nations Interim Administration Mission in Kosovo
4026	UNMOVIC,United Nations Monitoring,Verification and Inspection Commission
4027	UNOSOM,United Nations Operations in Somalia
4028	UNPROFOR,United Nations Protection Force (in former Yugoslavia)
4029	UNRISD,United Nations Research Institute for Social Development
4030	UNSM,Union of Nova Scotian Municipalities
4031	UNTAC,United Nations Transitional Authority in Cambodia
4032	UNTAET,(i/a) United Nations Transitional Administration in East Timor
4033	UNU,United Nations University
4034	UP,Ukraine (FIPS 10-4 country code),Union Pacific Railroad (AAR reporting mark),Upper Peninsula (of Michigan),Uttar Pradesh
4035	UPC,United Pentecostal Church,Universal Product Code
4036	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
4037	UPdM,Università Popolare della Multimedialità
4038	UPI,United Press International
4039	UPN,United Paramount Network
4040	UPS,Uninterruptible Power Supply,United Parcel Service
4041	UPTN,Universal Personal Telecommunications Number,Upper Peninsula Telehealth Network
4042	UPU,Universal Postal Union
4043	UR,Soviet Union (NATO country code,obsolete 1992)
4044	URBSFA,Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
4045	URD,User Requirements Document
4046	URI,Uniform Resource Identifier,University of Rhode Island
4047	URU,Uruguay (IOC and FIFA trigram,but not ISO 3166)
4048	URY,Uruguay (ISO 3166 trigram)
4049	US,United States (also ISO 3166 and FIPS 10-4 country code digram)
4050	USA,United States of America (also ISO 3166 trigram),United States Army
4051	USAADAC,U.S. Army Air Defense Artillery Center,Fort Bliss,Texas
4052	USAARMC,U.S. Army ARMor Center,Fort Knox,Kentucky
4053	USAAVNC,U.S. Army AViatioN Center,Fort Rucker,Alabama
4054	USAF,United States Air Force
4055	USAFSPC,U.S. Air Force Space Command
4056	USAIC,U.S. Army Infantry Center,U.S. Army Intelligence Center
4057	USAID, United States Agency for International Development
4058	USAP,Union Sportive des Arlequins Perpignanais,United States Antarctic Program
4059	USAPATRIOT,Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
4060	USAREUR,United States Army Europe
4061	USB,Universal Serial Bus
4062	USC,United States Code,University of South Carolina,University of Southern California
4063	USCG,United States Coast Guard
4064	USCINCSPACE,United States Commander in Chief,Space Command
4065	USDA,United States Department of Agriculture
4066	USDI,United States Department of the Interior
4067	USDOE,United States Department of Energy
4068	USDRE,(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
4069	USEC,United States Enrichment Corporation
4070	USFL,United States Football League
4071	USFWS,United States Fish and Wildlife Service
4072	USGS,United States Geological Survey
4073	USIA,United States Information Agency
4074	USJFCOM,United States Joint Forces Command
4075	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
4076	USMC,United States Marine Corps
4077	USMNT,United States men's national (soccer) team
4078	USN,United States Navy
4079	USNA,United States National Arboretum,United States Naval Academy
4080	USNB,United States Naval Base
4081	USNG,United States National Grid
4082	USNH,United States Naval Hospital
4083	USNI,United States Naval Institute
4084	USNO,U.S. Naval Observatory
4085	USNOFS,United States Naval Observatory Flagstaff Station
4086	USNP,United States Newspaper Program
4087	USNR,United States Navy Reserve
4088	USNS,United States Naval Ship
4089	USNZ,University Sport New Zealand
4090	USPS,United States Postal Service
4091	USPTO,United States Patent and Trademark Office
4092	USR,Universal System Resources (/usr,directory in a *NIX filesystem),User
4093	USS,United States ship (sometimes meaningless; see Star Trek)
4094	USSPACECOM,United States Space Command
4095	USSR,Union of Soviet Socialist Republics
4096	UST,Underground Storage Tank
4097	USTRANSCOM,United States Transportation Command
4098	USWNT,United States women's national (soccer) team
4099	UT,Universal Time
4100	UTEP, University of Texas at El Paso (pronounced you-tep)
4101	UTM,Universal Transverse Mercator (geographical co-ordinate system)
4102	UU,Unitarian Universalism,University of Utah,Unseen University
4103	UUA,Unitarian Universalist Association
4104	UUID,Universally Unique Identifier (see also GUID)
4105	UUV,Unmanned Underwater Vehicle
4106	UV,Burkina Faso (FIPS 10-4 country code; from Upper Volta),ultraviolet
4107	UW,University of Washington
4108	UWO,University of Western Ontario
4109	UWT,Under Water Telephone
4110	UWTG,Under Water Tug
4111	UWW,United World Wrestling
4112	UXO,Unexploded Ordnance
4113	UY,Uruguay (ISO 3166 and FIPS 10-4 country code digram)
4114	UZ,Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
4115	UZB,Uzbekistan (ISO 3166 trigram)
4116	V,5 (in Roman numerals),Vanadium,Volt
4117	VA,Vatican City-State (ISO 3166 digram),Veterans Affairs (U.S. Department of),Virginia (postal symbol),Various Artists
4118	VACIS,Vehicle And Container Inspection System
4119	VACIS,Victorian Ambulance Clinical Information System
4120	VANOS,Variable Nockenwelle System
4121	VAO,Vienna Art Orchestra
4122	VAT,Value-Added Tax,Vatican City-State (ISO 3166 trigram)
4123	VB,Victoria Bitter (beer),Visual Basic
4124	VBA,Visual Basic for Applications
4125	VC,Saint Vincent and the Grenadines (FIPS 10-4 country code; ISO 3166 digram),Victoria Cross
4126	VCDS,(Canada) Vice-Chief of the Defence Staff,VAG-COM Diagnostic System
4127	VCJCS,Vice Chairman,Joint Chiefs of Staff
4128	vCJD,Variant Creutzfeldt-Jakob Disease
4129	VCNO,(U.S.) Vice Chief of Naval Operations
4130	VCofS,Vice Chief of Staff
4131	VCR,Video cassette recorder
4132	VCT,Saint Vincent and the Grenadines (ISO 3166 trigram)
4133	VD,North Vietnam (ISO 3166 digram,obsolete 1977),Venereal Disease
4134	VDFS,VisualSVN Distributed File System (VDFS)
4135	VDR,North Vietnam (ISO 3166 trigram,obsolete 1977)
4136	VE,Venezuela (FIPS 10-4 country code; ISO 3166 digram)
4137	VEEGA,Venus Earth Earth Gravity Assist manœuvre
4138	VEN,Venezuela (ISO 3166 trigram)
4139	VERDI,Vittorio Emanuele Re D'Italia (Victor Emmanuel,King of Italy)
4140	VERITAS,Very Energetic Radiation Imaging Telescope Array System
4141	VFA,Victorian Football Association (historic Australian rules football league),Volatile Fatty Acid
4142	VfD,s for deletion (used in Wikipedia)
4143	VFL,Victorian Football League,the name of two distinct Australian rules football leagues:
4144	VFM,Value For Money
4145	VFMO,Very Fast Moving Object (astronomy)
4146	VFT,Virtual Function Table
4147	VFW,Veterans of Foreign Wars
4148	VG,British Virgin Islands (ISO 3166 digram)
4149	VGB,British Virgin Islands (ISO 3166 trigram)
4150	VH1, Video Hits One
4151	VHF,Very High Frequency
4152	VIA,Versatile Interface Adapter
4153	VIC,Victoria,Australia (postal symbol),Video Interface Chip,Virginia Intermont College
4154	VIDS,Visual Information Display System
4155	VII,7 (in Roman numerals)
4156	VIII,8 (in Roman numerals)
4157	VIN,(i/a) Vehicle Identification Number (ISO 3779)
4158	VIP,Very Important Person
4159	VIR,U.S. Virgin Islands (ISO 3166 trigram),Virgin Atlantic Airways (ICAO code)
4160	VIS,Vavoua International School,Vienna Independent Shorts,Viewable Image Size,Visual Instruction Set
4161	VISCII,VIetnamese Standard Code for Information Interchange
4162	VIT,Vellore Institute of Technology
4163	VIVO,Video In Video Out
4164	VJ,Video Jockey
4165	VK,Australia (ham radio code),Västerbottens-Kuriren,a Swedish daily newspaper
4166	VLA,Very Large Array,(UK) Veterinary Laboratories Agency
4167	VLAD, Vertical Line Array DIFAR
4168	VLBA,Very Long Baseline Array
4169	VLF,Very Low Frequency
4170	VLIW,Very Long Instruction Word
4171	VLPFC,VentroLateral PreFrontal Cortex
4172	VLPMC,VentroLateral PreMotor Cortex
4173	VLSF,Very Loud,Stink-Free
4174	VLSI,Very-large-scale integration
4175	VLVS,Very Loud,Very Stinky
4176	VM,Vietnam (FIPS 10-4 country code)
4177	VMF,Marine Fighting Squadron of the United States Marine Corps
4178	VMF,Variable Message Format
4179	VMN,VentroMedial Nucleus (neurophysiology)
4180	VN,Vietnam (ISO 3166 digram)
4181	VNIR,Visible and Near InfraRed
4182	VNM,Vietnam (ISO 3166 trigram)
4183	VNS,see entry
4184	VOA,Voice of America
4185	VOC,Vereenigde Oostindische Compagnie (Dutch East India Company),Volatile organic compounds
4186	VOIP,Voice Over Internet Protocol
4187	VOLT,Visual OpenType Layout Tool
4188	VON,Victorian Order of Nurses
4189	VOR,Voice of Russia
4190	VOX,Voice Operated oscillator
4191	VPN,Virtual Private Network
4192	VQ,Vector Quantization,U.S. Virgin Islands (FIPS 10-4 territory code)
4193	VR,Virtual Reality
4194	VRSG,Virtual Reality Scene Generator
4195	VSHORAD,Very Short Range Air Defence
4196	VSO,Voluntary Services Overseas
4197	VSR,Very Special Relativity
4198	VT,Vatican City-State (FIPS 10-4 country code),Vermont (postal symbol),Video tape,Virginia Tech
4199	VTC,Video Tele-Conference
4200	VTEC,Variable valve Timing and Electronic lift Control
4201	VTOL,Vertical Take-Off & Landing
4202	VU,Vanuatu (ISO 3166 digram),Vedanta University
4203	VUB,Vrije Universiteit Brussel (Belgian university)
4204	VUT,Vanuatu (ISO 3166 trigram)
4205	VV,Via Voice,Village Voice
4206	VVAF,Vietnam Veterans of America Foundation
4207	VW,Volkswagen
4208	VZ,Verizon Communications (NYSE code)
4209	W,Tungsten (from German Wolfram),Watt,West
4210	W3C,World Wide Web Consortium
4211	WA,Namibia (FIPS 10-4 country code; from West Africa),Washington state (postal symbol),Western Australia (postal symbol),World Archery (Federation)
4212	WAAC,Women's Army Auxiliary Corps (Britain) (World War I UK)
4213	WAAF,Women's Auxiliary Air Force (World War II UK)
4214	WAC,Western Athletic Conference,Women's Auxiliary Corps (World War II Canada),Women's Army Corps (World War II U.S.)
4215	WACC,Weighted Average Cost of Capital (accounting)
4216	WACS,What-A-Cartoon! Show
4217	WAD,Weapons Alert Designator
4218	WAGGGS,World Association of Girl Guides and Girl Scouts
4219	WAGs,Wives And Girlfriends (most notably of England national football team players at the 2006 FIFA World Cup,although the term existed earlier)
4220	WAK,Wake Island (ISO 3166 trigram,obsolete 1986)
4221	WAL,see entry
4222	WAN,Wide area network
4223	WAP,Wireless Application Protocol
4224	WAPIMA,What a pain in my ass
4225	WAR,With All Respect
4226	WAsP,Short form of WAAAAP (Wind Atlas Analysis and Application Program)
4227	WASP,White Anglo-Saxon Protestant,Wide Angle Search for Planets,Women Airforce Service Pilots
4228	WAYP,White And Yellow Pages
4229	WB,Warner Bros.,Welcome Back (Internet shorthand)
4230	Wb,Weber
4231	WBA,Warner Bros. Animation,West Bromwich Albion (F.C.),World Boxing Association
4232	WBC,World Boxing Council
4233	WBE,Work Breakdown Element
4234	WBO,World Boxing Organization
4235	WC,Water Closet,Winston Churchill,World Cup (sports)
4236	WCBO,World Chess Boxing Organisation
4237	WCBP,World Center for Birds of Prey
4238	WCL,World Confederation of Labour
4239	WCS,Weapon Control Status,Wildlife Conservation Society
4240	WCW,World Championship Wrestling
4241	WDC,Western Design Center,World Data Center
4242	WDIN,Wildlife Disease Information Node
4243	WDWR,Walt Disney World Resort
4244	WEBS,Weapon Effectiveness Battle Simulation
4245	WEC,World Extreme Cagefighting
4246	WEEE,Waste Electrical and Electronic Equipment
4247	WEF,World Economic Forum
4248	WEM,West Edmonton Mall
4249	WEU,Western European Union
4250	WEZ, Weapon Engagement Zone
4251	WF,Wallis and Futuna Islands (ISO 3166 digram)
4252	WFC,Women's Forage Corps (World War II UK)
4253	WFD,Weapon of Focused Destruction
4254	WFF,Wallops Flight Facility
4255	WFI,Water for Injection
4256	WFH,Working from home
4257	WFP,World Food Program
4258	WFZ,Weapons Free Zone
4259	WG,Working Group,Wade-Giles
4260	WH,Wehrmacht Heer (German World War II army vehicle licence plate code)
4261	WHAM,Wisconsin Hydrogen-Alpha Mapping (telescope)
4262	WHI,Women's Health Initiative
4263	WHIP,Walks plus hits per inning pitched
4264	WHO,World Health Organisation
4265	WHS,(U.S.) Washington Headquarters Services
4266	WI,Western Sahara (FIPS 10-4 country code),Wisconsin (postal symbol),Women's Institute
4267	WIA,Wounded In Action,Wireless Institute of Australia (Amateur Radio)
4268	WIIFM,What's in it for me?
4269	WIMP,Weakly Interacting Massive Particle,Windows,Icons,Menus,Pointers
4270	WIP,Work In Progress
4271	WIPO, World Intellectual Property Organization
4272	WIPP,[Nuclear] Waste Isolation Pilot Plant
4273	WIYN,Wisconsin Indiana Yale NOAO telescope consortium
4274	WK,Wake Island (ISO 3166 digram,obsolete 1986)
4275	WKYP,Will Keep You Posted
4276	WL,Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
4277	WLB,Women's Land Brigade (World War II Canada)
4278	WLF,Wallis and Futuna Islands (ISO 3166 trigram)
4279	WLOG,Without Loss Of Generality (see WOLOG)
4280	WM,Wehrmacht Marine (German World War II navy vehicle licence plate code)
4281	WMANUS,West Midlands Area National Union of Students
4282	WMD,World Movement for Democracy
4283	WMI,Wildlife Management Institute
4284	WMO,World Meteorological Organization
4285	WNA,World Nuclear Association
4286	WNIT,Women's National Invitation Tournament
4287	WNSD,What's New,Scooby-Doo?
4288	WNW,West North-West
4289	WO,Warrant Officer
4290	WOF,Width of Fabric
4291	WOFT,Waste Of Fucking Time
4292	WOFTAM,Waste Of Fucking Time And Money
4293	WOI, Wheels Of Italy
4294	WOM,Write Only Memory
4295	WOS,Wilson Ornithological Society
4296	WOSM,World Organization of the Scout Movement,Worldwide Oil Spill Model
4297	WOT,Waste Of Time
4298	WP,White Phosphorus (ammunition)
4299	WPB,War Production Board during World War II
4300	WPE,World Pork Expo
4301	WPK,Wider Peacekeeping
4302	WPT,World Poker Tour,World Premiere Toons
4303	WR,Wide Receiver (football)
4304	WRAC,Women's Royal Army Corps (World War II UK)
4305	WRAIR,Walter Reed Army Institute of Research
4306	WRC,World Rally Championship
4307	WRC,World Religions Conference
4308	WRNG,Warning
4309	WRS,Worldwide Reference System
4310	WRT,NHS Workforce Review Team
4311	WRT,The Linksys routers whose model name start with 'WRT'
4312	WRT,Third party firmware for the Linksys WRT routers and compatible models from other vendors.
4313	WRT,Wallace Roberts & Todd,LLC (Urban Planning and Design)
4314	WRT,Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
4315	WRT,Wholesale,Trade,Retail sector,category in employment and economics statistics
4316	WRT,Wireless Receiver/Transmitter ( computer networks/IT )
4317	WRT,Wireless Ronin Technologies (digital signage)
4318	WRT,World Rally Team
4319	WRT,Writer Response Theory
4320	WRVS,Women's Royal Voluntary Service,now only known by the acronym (UK)
4321	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)
4322	WSC,Weapon System Catalogue
4323	WSDL,Web Services Description Language
4324	WSJ,(The) Wall Street Journal
4325	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)
4326	WSM,Samoa (ISO 3166 trigram; from Western Samoa),Winchester Short Magnum (family of rifle cartridges)
4327	WSROC,Western Sydney Regional Organisation of Councils
4328	WSSM,Winchester Super Short Magnum (family of rifle cartridges)
4329	WSTC,Women Signallers Territorial Corps (World War II UK)
4330	WSW,West South-West
4331	WTB,Wales Tourism Board,Warenterminbörse Hannover
4332	WTC,World Trade Center
4333	WTF,What the fuck?; also What a Terrible Failure (android)
4334	WTFH,What The Fucking Hell
4335	WTH,What the Hell
4336	WTO,World Trade Organization
4337	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)
4338	WUBU2,What you been up to
4339	WUU2,What you up to,Internet slang popular with teenagers.
4340	WV,West Virginia (postal symbol)
4341	WVA,World Veterinary Association
4342	WVIAC,West Virginia Intercollegiate Athletic Conference
4343	WVR,Women's Volunteer Reserve (World War II UK)
4344	WVSC,Women's Volunteer Service Corps (World War II Canada)
4345	WVU,West Virginia University
4346	WW,see entry
4347	WWE,World Wrestling Entertainment
4348	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
4349	WWI,World War I
4350	WWII,World War II
4351	WWIII,World War III
4352	WWS,Wheaton Warrenville South High School
4353	WWV,Wagner-Werk-Verzeichnis (catalog of the works of Richard Wagner,and callsign of NIST's shortwave radio station in Fort Collins,Colorado)
4354	WWWF,World Wide Wrestling Federation
4355	WXO,Weather [Executive] Officer
4356	WY,Wyoming (postal symbol)
4357	WZ,Swaziland (FIPS 10-4 country code)
4358	XBML,eXtended Business Modelling Language
4359	XC,Ninety (in Roman numerals)
4360	XCBL,XML Common Business Library
4361	XD,Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
4362	Xe,Xenon
4363	XF,Automobile made by Jaguar,Truck made by DAF Trucks,IATA code for Vladivostok Air
4364	XFA,XML Forms Architecture
4365	XFC,Xtreme Fighting Championships
4366	XFD,Fighter aircraft made by Douglas
4367	Xfe,X File Explorer
4368	XFF,X-Forwarded-For
4369	XFG,Exfoliation glaucoma
4370	XFH,1932 rototype U.S. Navy fighter aircraft made by Hall,X-ray fluorescence holography
4371	XFN,XHTML Friends Network,
4372	XFR,Automobile made by Jaguar
4373	XFT,X FreeType interface library
4374	XG,Automobile made by Hyundai
4375	XGA,Extended Graphics Array
4376	XGP,Extreme Game Player
4377	XHR,eXtra high Image resolution,XMLHTTPRequest
4378	XHTML,eXtensible Hypertext Markup Language
4379	XI,Eleven (in Roman numerals)
4380	XII,Twelve (in Roman numerals)
4381	XIII,Thirteen (in Roman numerals)
4382	XIV,Fourteen (in Roman numerals)
4383	XIX,Nineteen (in Roman numerals)
4384	XJ,Automobile made by Jaguar,Automobile made by Jeep
4385	XJL,Amphibian aircraft made by Columbia,Automobile made by Jaguar
4386	XJS,Automobile made by Jaguar
4387	XK,Automobile made by Jaguar,Automobile made by Jeep,Kell blood group precursor
4388	XKB,X keyboard extension
4389	XKE,Automobile made by Jaguar
4390	XKR,Automobile made by Jaguar
4391	XL,eXtra Large,Forty (in Roman numerals)
4392	XML,eXtensible Markup Language
4393	XMSF,eXtensible Modelling and Simulation Framework
4394	XN,Christian,Nordic Patent Institute
4395	XNC,X Northern Captain
4396	XNS,Xerox Network Systems,Extensible Name Service,Christians
4397	XNU,X is Not Unix
4398	XP,eXperience Point (role-playing games)
4399	XQJ,XQuery API for Java™
4400	XRAY,X-Ray
4401	XRML,eXtensible Rights Markup Language
4402	XS,Xiaolin Showdown
4403	XSL,eXtensible Style Language
4404	XTMH,eXtreme Technology Multiprocessor Hyperlanguage
4405	XUL,XML User Interface Language
4406	XV,Fifteen (in Roman numerals)
4407	XVI,Sixteen (in Roman numerals)
4408	XVII,Seventeen (in Roman numerals)
4409	XVIII,Eighteen (in Roman numerals)
4410	XWF,Xcitement Wrestling Federation
4411	XX,Twenty (in Roman numerals)
4412	XXX,Hardcore pornography (film rating),Thirty (in Roman numera
4413	Xyl,Xylobium
4414	XZN,Triple square screw driver
4415	y,Yocto-
4416	Y,Yotta,Yttrium
4417	Y2K,Year Two Thousand
4418	yA,Yoctoampere
4419	YA,Yottaampere,Young Adult
4420	Ya,Yottayear
4421	YaBPr,Yet another Brother Pat rant
4422	YABSLAG,Yet another boy singing like a girl
4423	YAC, Youth-Adult Committee
4424	YAFLA,Yet Another Five Letter Abbreviation
4425	YAP,Young Aspiring Professional
4426	YB,Youcef Benzouada (Southern Algerian name)
4427	Yb,Ytterbium
4428	yC,Yoctocoulomb
4429	YC,Yottacoulomb
4430	YD,People's Democratic Republic of Yemen (ISO 3166 digram,obsolete 1990)
4431	YDS,Yosemite Decimal System (climbing)
4432	YE,Yemen (ISO 3166 digram)
4433	YEM,Yemen (ISO 3166 trigram)
4434	yF,Yoctofarad
4435	YF,Yottafarad
4436	yg,Yoctogram
4437	Yg,Yottagram
4438	YGCO,Yamaneko Group of Comet Observers
4439	Ygo,Yu-Gi-Oh!
4440	yH,Yoctohenry
4441	YH,Yottahenry
4442	YHBT,You Have Been Trolled
4443	YHIH1,You Heard It Here First (lowercase: yhih1,pronounced yi-hi)
4444	YHII,You Have It Inside
4445	YHS,Ya Hoor sur!
4446	YI,Serbia and Montenegro (deprecated FIPS 10-4 country code,now RB (Serbia) and MJ (Montenegro))
4447	Yi,Yobi
4448	Yippie,Youth International Party + suffix
4449	yJ,Yoctojoule
4450	YJ,Yottajoule
4451	yK,Yoctokelvin
4452	YK,Yottakelvin
4453	YKYFCW,You know you're from Christchurch when (post-earthquake joke)
4454	yL,Yoctolitre
4455	YL,Yottalitre
4456	YM,Yemen (FIPS 10-4 country code),Your Magazine (originally Young Miss,later Young & Modern)
4457	ym,Yoctometre
4458	Ym,Yottametre
4459	YMD,People's Democratic Republic of Yemen (ISO 3166 trigram,obsolete 1990)
4460	YMMD,You Make My Day
4461	yN,Yoctonewton
4462	YN,Yottanewton
4463	YO,former Yugoslavia (NATO country code,obsolete 1993)
4464	YOLO,You Only Live Once
4465	YPA,Yards per Pass Attempt (football statistic)
4466	YPIO,Your Problem Is Obvious
4467	YPO,Young Presidents' Organization
4468	ys,Yoctosecond
4469	yS,Yoctosiemens
4470	Ys,Yottasecond
4471	YS,Yottasiemens
4472	YSA,Single adult (LDS Church),Young Socialist Alliance,Youth Service America
4473	YSI,Young Scots for Independence
4474	YT,Mayotte (ISO 3166 digram),Yottatesla,Yukon Territory (postal symbol)
4475	yT,Yoctotesla
4476	YTD,Year-To-Date
4477	YTM,Yield to Maturity
4478	YTS,Youth Training Scheme
4479	YTT,Yoshi Topsy-Turvy
4480	YU,York University,former Yugoslavia (ISO 3166 digram,obsolete 2003)
4481	YUG,former Yugoslavia (ISO 3166 trigram,obsolete 2003)
4482	Yuppie,Young Urban Professional + suffix
4483	yV,Yoctovolt
4484	YV,Yottavolt
4485	yW,Yoctowatt
4486	YW,Yottawatt
4487	YYH,YuYu Hakusho
4488	z,Zepto
4489	Z,Zetta
4490	ZA,South Africa (ISO 3166 digram),Zambia (FIPS 10-4 country code),Zettaampere
4491	zA,Zeptoampere
4492	ZAF,South Africa (ISO 3166 trigram)
4493	ZAMS,Zero age main sequence
4494	ZAS,Zylinder Abschaltung System
4495	ZBT,Zero-Balance Transfer (accounting)
4496	zC,Zeptocoulomb
4497	ZC,Zettacoulomb
4498	ZCM,(n) ZENworks Configuration Management
4499	ZCMK,Zone Control Master Key
4500	ZCU,Zimbabwe Cricket Union
4501	\a,Atto-