PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
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	2LA	Two Letter Acronym
8	2Lt	2nd Lieutenant
9	3AM	Air Mechanic 3rd Class
10	3D	Three-Dimensional
11	3G	Third-generation mobile telephone system
12	3i	Investors In Industry (venture capitalists)
13	3M	Minnesota Mining and Manufacturing Company
14	4G	Fourth-generation mobile telephone system
15	4WD	Four-wheel drive
16	5D	Five-Dimensional
17	6D	Six-Dimensional
18	7D	Seven-Dimensional
19	8D	Eight-Dimensional
20	9D	Nine-Dimensional
21	A	Ampere
22	A10	Atlantic 10 Conference
23	A1C	Airman First Class
24	A4	European standard office paper size
25	aA	Attoampere
26	AAA	administration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
27	AAAS	American Association for the Advancement of Science
28	AAAV	Advanced Amphibious Assault Vehicle
29	AADAC	Alberta Alcohol and Drug Abuse Commission
30	AADD	Adult attention deficit disorder
31	AADT	annual average daily traffic
32	AAFES	Army and Air Force Exchange Service
33	AAIS	advanced airborne interceptor simulator
34	AAM	air-to-air missile
35	AAMOF	as a matter of fact
36	AAN	American Academy of Nursing
37	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
38	AAODL	Atmospheric Aerosols and Optics Data Library
39	AAPC	Accounting and Auditing Policy Committee
40	AARP	American Association of Retired Persons (now officially known only by the initials)
41	AASPEM	advanced air-to-air system performance evaluation model
42	AAT	Australian Antarctic Territory
43	AAV	Amphibious Assault Vehicle
44	AAWC	anti-air warfare commander
45	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
46	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
47	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48	ABC	the first three letters of the Latin script known as the alphabet
49	ABC	abstinence, be faithful, condoms
50	ABC	Active Body Control
51	ABC	airway, breathing, circulation
52	ABC	Alcoholic Beverage Commission
53	ABC	alien big cat
54	ABC	always be careful
55	ABC	American-born Chinese
56	ABC	anti-lock brake controller
57	ABC	atomic, biological, chemical
58	ABCS	(U.S.) Army Battle Command System
59	ABET	Accreditation Board for Engineering and Technology
60	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
61	ABGI	Addington-Barker Group International
62	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
63	ABL	American Basketball League
64	ABLE	AirBorne Law Enforcement (police air support unit)
65	ABMC	American Battle Monuments Commission
66	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67	ABPI	Association of the British Pharmaceutical Industry
68	ABRSM	Associated Board of the Royal Schools of Music
69	ABS	acrylonitrile butadiene styrene, or: anti-lock braking system
70	ABSA	Amalgamated Banks of South Africa
71	ABSTRIPS	abstraction-based STRIPS
72	ABV	Alcohol by volume
73	ABW	Aruba (ISO 3166 trigram)
74	Ac	Actinium
75	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Antigua and Barbuda (FIPS 10-4 country code),Associazione Calcio (Italian,'football (soccer) club'),A/C,Air Conditioned/Conditioning,Aircraft
76	aC	Attocoulomb
77	AC1	Aircraftman 1st Class
78	AC2	Aircraftman 2nd Class
79	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80	ACARS	Aircraft Communications Addressing and Reporting System
81	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83	ACCD	American Coalition of Citizens with Disabilities
84	ACCS	Air Communications and Control Squadron
85	ACDA	Arms Control & Disarmament Agency
86	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
88	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
90	ACHT	Average Call Hold Time
91	ACINT	Acoustic Intelligence
92	ACK	Acknowledge (telecommunications; cf. NAK)
93	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94	ACLJ	American Center for Law and Justice
95	ACLOS	Automatic CLOS (missile control system)
96	ACLS	American Council of Learned Societies
97	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98	ACM	many,including Association for Computing Machinery; see entry
99	ACMC	(U.S.) Assistant Commandant of the Marine Corps
100	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101	ACNA	Anglican Church in North America
102	ACO	Airspace Control Order
103	ACOBA	Advisory Committee on Business Appointments
104	ACOG	American College of Obstetricians and Gynecologists
105	ACOM	(U.S.) Atlantic Command
106	ACORN	Association of Community Organizations for Reform Now
107	ACP	African,Caribbean and Pacific Group of States,Air Control Point
108	ACR	Advanced Concepts and Requirements
109	ACRI	African Crisis Initiative
110	ACRT	Advanced Concepts Research Tool simulator
111	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112	ACSC	Army Command and Staff College (various nations)
113	ACST	American Cooperative School of Tunis
114	ACST	Australian Central Standard Time
115	ACT	Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP,AIDS Coalition to Unleash Power
116	ACTD	Advanced Concept Technology Demonstration
117	ACTF	(U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R,ACT-Rational (cognitive model),ACT-R/PM,ACT-R/Perceptual-Motor (cognitive model)
118	ACTU	Australian Council of Trade Unions
119	ACU	American Conservative Union
120	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
121	AD	Air Defence,Andorra (ISO 3166 digram),Anno Domini (Latin,'In the year of our Lord')
122	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124	ADAGE	Air Defense Air to Ground Engagement (simulation)
125	ADAP	AIDS Drug Assistance Program
126	ADAS	Asiago-DLR Asteroid Survey
127	ADAT	Alesis Digital Audio Tape (recording format)
128	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129	ADB	Asian Development Bank
130	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132	ADDIE	Analyze Design Develop Implement and Evaluate
133	ADDNS	Advanced Deployable Day/Night Simulation
134	ADGB	Air Defence of Great Britain
135	ADHD	Attention-Deficit Hyperactivity Disorder
136	ADHS	Attention-Deficit Hyperactivity Syndrome
137	ADI	Acceptable/Allowable Daily Intake
138	ADIZ	Air Defence Identification Zone
139	ADL	Anti-Defamation League
140	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141	ADOA	Air Defence Operations Area
142	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
144	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
145	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
146	ADT	Atlantic Daylight Time (UTC−3 hours)
147	ADTB	Army Doctrine and Training Bulletin
148	ADW	Air Defence Warning
149	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
150	AEDT	Australian Eastern Daylight Time
151	AEF	American Expeditionary Force
152	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
153	AESR	Aeronautical Equipment Service Record
154	AEST	Australian Eastern Standard Time
155	aet	After extra time (Football)
156	AEW	Airborne Early Warning,Airborne Electronic Warfare
157	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
158	aF	Attofarad
159	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160	AFAIC	As Far As I'm Concerned
161	AFAICT	As Far As I Can Tell
162	AFAIK	As Far As I Know
163	AFAIR	As Far As I Remember/Recall
164	AFAM	Associazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
165	AFATDS	Advanced Field Artillery Tactical Data System
166	AFCEA	Armed Forces Communications and Electronics Association
167	AFDB	African Development Bank
168	AFES	Automatic Fire Extinguishing System
169	AFG	Afghanistan (ISO 3166 trigram)
170	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171	AFIST	Abrams Full Crew Interactive Skills Trainer
172	AFJ	April Fool's Joke
173	AFK	Away From Keyboard (Internet chat abbreviation)
174	AFLAC	American Family Life Assurance Company of Columbus
175	AFO	Association of Field Ornithologists
176	AFOSR	U.S. Air Force Office of Scientific Research
177	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
178	AFQT	Armed Forces Qualification Test
179	AFRC	Air Force Reserve Command
180	AFRL	Air Force Research Laboratory
181	AFROTC	Air Force Reserve Officer Training Corps
182	AFRTS	Armed Forces Radio and Television Service
183	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
184	AFSCN	U.S. Air Force Satellite Control Network
185	AFSPC	Air Force Space Command
186	AFT	American Farmland Trust
187	AFV	armoured fighting vehicle
188	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
189	ag	Attogram
190	Ag	Silver (Latin argentum)
191	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
192	AGARD	Advisory Group for Aerospace Research and Development
193	AGARDograph	Advanced Guidance for Alliance Research and Development publication
194	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
195	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
196	AGC	Adjutant General's Corps (British Army)
197	AGDC	Australian Game Developers' Conference
198	AGI	Auxiliary Group Intelligence
199	AGM	Annual General Meeting
200	AGN	Active Galactic Nucleus
201	AGO	Angola (ISO 3166 trigram)
202	AGP	Accelerated Graphics Port
203	AGRICOLA	Agriculture Online Access
204	AGS	Alaska Ground Station (LandSat)
205	AGTS	Advanced Gunnery Training System
206	AGU	American Geophysical Union
207	AGW	Autonomous Guided Weapon
208	Ah	Ampere-hour
209	AH	Attack Helicopter
210	aH	Attohenry
211	AHA	American Heart Association
212	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
213	AHEC	Australian Health Ethics Committee
214	AHPCRC	Army High Performance Computing Research Center
215	AHQ	Air Headquarters
216	AHRQ	Agency for Healthcare Research and Quality
217	AHS	American Housing Survey
218	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
219	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
220	AIAA	American Institute of Aeronautics and Astronautics
221	AIC	African Independent Church,Animal Identification Coordinator
222	AICD	Australian Institute of Company Directors
223	AICMFP	And I Claim My Five Pounds
224	AID	U.S. Agency for International Development
225	AIDS	Acquired Immune Deficiency Syndrome
226	AIM	Australian Institute of Management
227	AIMP	Aurora Incremental Modernization Project
228	AIPAC	American Israel Public Affairs Committee
229	AIR	Aircraft Inventory Record
230	AIRFA	American Indian Religious Freedom Act
231	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
232	AIS	Australian Institute of Sport,Automatic Identification System
233	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
234	aJ	Attojoule
235	AJ	Azerbaijan (FIPS 10-4 country code)
236	Ajax	Asynchronous JavaScript And XML
237	AJD	Astronomical Julian day
238	AJP	Allied Joint Publication
239	AJPW	All Japan Pro Wrestling
240	AK	Alaska (postal symbol)
241	aK	Attokelvin
242	AKA	Above knee amputation (orthopaedic usage)
243	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
244	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
245	AKST	Alaska Standard Time (UTC−9 hours)
246	AL	Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram),Anno Lucis (Latin,'Year of Light',in Masonic tradition,most often seen on plaques bearing the founding dates of buildings,in years AD and years AL)
247	Al	Aluminium
248	aL	Attolitre
249	ALA	Åland Islands (ISO 3166 trigram)
250	ALAP	As Long/Late As Possible
251	ALARM	Air-Launched Anti-Radar Missile
252	ALB	Albania (ISO 3166 trigram)
253	ALD	Accounting Line Designator (nuclear weapon targeting)
254	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
255	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
256	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
257	ALGOL	ALGOrithmic Language
258	ALPA	Air Line Pilots Association
259	ALS	Amyotrophic Lateral Sclerosis
260	ALSHS	Abraham Low Self-Help Systems
261	ALSP	Aggregate Level Simulation Protocol
262	ALTE	Association of Language Testers in Europe
263	Am	Americium
264	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
265	AM1	Airman 1st class
266	AMCB	U.S. Army/Marine Corps Board
267	AMFOM	Advanced Missile Fly Out Model
268	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
269	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
270	AML	Acute Myeloid Leukaemia
271	AMLCD	Active Matrix Liquid Crystal Display
272	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
273	AMO	Atlantic Multidecadal Oscillation
274	AMOLED	Active-matrix organic light-emitting diode
275	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
276	AMP	Adenosine MonoPhosphate,Automated Mission Planner
277	AMRAAM	Advanced Medium-Range Air-to-Air Missile
278	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
279	AMS	Agriculture Marketing Service,American Mathematical Society
280	AMSAA	U.S. Army Materiel Systems Analysis Activity
281	AMSO	U.S. Army Model and Simulation Office
282	AMSU	Advanced Microwave Sounding Unit
283	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
284	AN	Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
285	aN	Attonewton
286	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
287	ANC	African National Congress
288	AND	Andorra (ISO 3166 trigram)
289	ANFO	Ammonium nitrate/fuel oil (explosive)
290	ANGLiCo	Air/Naval Gunfire Liaison Company
291	ANL	Argonne National Laboratory
292	ANM	Acoustic Noise Monitor
293	ANOVA	ANalysis Of VAriance
294	ANS	Applied and Natural Sciences
295	ANSI	American National Standards Institute
296	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
297	ANTM	America's Next Top Model
298	ANTY	Acronyms,No Thank You
299	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
300	ANZ	Australia and New Zealand Banking Group
301	ANZAC	Australian and New Zealand Army Corps
302	AO	Angola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
303	AOC	Air Operations Centre,Air Officer Commanding
304	AOD	Adrenalin O.D. (punk rock band)
305	AOI	Angle Of Incidence (Arab Organization for Industrialization)
306	AOL	America OnLine
307	AOR	Area of Responsibility
308	AOSTH	Adventures of Sonic the Hedgehog
309	AOTS	Attack of the Show!
310	AOU	American Ornithologists' Union
311	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
312	APB	All Points Bulletin (police jargon)
313	APEC	Asia Pacific Economic Cooperation
314	APEDS	AMSAA Performance Estimates Data System
315	APEX	Applied Physics Express
316	APHA	American Public Health Association
317	APHIS	Animal and Plant Health Inspection Service
318	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
319	APOD	Aerial Port (Airport) Of Debarkation
320	APOE	Aerial Port (Airport) Of Embarkation
321	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
322	APP	Allied Procedural Publication
323	APR	Annual Percentage Rate
324	AQIM	Al-Qaeda in the Islamic Maghreb
325	Ar	Argon
326	ARAG	Advanced Research and Assessment Group
327	ARB	Administrative Review Board
328	ARBA	Army Review Boards Agency
329	ARCA	Automobile Racing Club of America
330	ARCENT	United States Army Central Command
331	ARDA	Advanced Research and Development Activity (became DTO 2006)
332	ARF	ASEAN Regional Forum
333	ARG	Argentina (ISO 3166 trigram)
334	ARH	Armed Reconnaissance Helicopter
335	ARNet	Acquisition Reform Network
336	ARP	Applied Research Programme
337	ARPA	Advanced Research Projects Agency
338	ARRC	ACE Rapid Reaction Corps
339	ARRF	Allied Rapid Reaction Force
340	ARRL	American Radio Relay League
341	ARSC	Arctic Region Supercomputing Center
342	ARSPACE	U.S. Army Space Command
343	ARTCC	Air Route Traffic Control Center
344	ARWG	Army Research Working Group
345	AS	ActionScript
346	AS	American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
347	As	Arsenic
348	aS	Attosiemens
349	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
350	ASAP	As Soon As Possible
351	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
352	asbl	association sans but lucratif (French 'Non-profit organisation')
353	ASBO	Anti-Social Behaviour Order
354	ASCAP	American Society of Composers,Authors,and Publishers
355	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
356	ASCII	American Standard Code for Information Interchange
357	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
358	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
359	ASEAN	Association of Southeast Asian Nations
360	ASFAR	Americans for a Society Free of Age Restrictions
361	ASG	Area Support Group
362	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
363	ASICS	Anima sana in corpore sano (Latin,'A sound mind in a sound body') (athletic shoe manufacturer)
364	ASIO	Australian Security Intelligence Organisation,Audio stream input output
365	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
366	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
367	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
368	ASMB	American Society for Matrix Biology,Adult Swim Message Board
369	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
370	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
371	ASN	Associate of Science in Nursing
372	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
373	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
374	ASPI	Australian Strategic Policy Institute
375	ASR	Alkali-silica reaction,Anti Slip Regulation
376	ASRAAM	Advanced Short-Range Air-to-Air Missile
377	ASSC	Association for the Scientific Study of Consciousness
378	AST	Atlantic Standard Time (UTC−4 hours)
379	ASTIA	Armed Services Technical Information Agency
380	ASTM	American Society for Testing and Materials
381	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
382	ASUW	AntiSUrface Warfare
383	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
384	ASVEL	Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for 'Sporting Association'; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
385	ASW	AntiSubmarine Warfare
386	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
387	ASX	Advanced Stream Redirector,Australian Securities Exchange
388	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
389	At	Astatine
390	aT	Attotesla
391	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
392	ATAC	Air Transportable Acoustic Communications
393	ATACMS	Army TACtical Missile System
394	ATAPI	Advanced Technology Attachment Packet Interface
395	ATAS	Air-To-Air Stinger (missile)
396	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
397	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
398	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
399	ATCCIS	Army Tactical Command and Control Information System
400	ATESS	Aerospace and Telecommunications Engineering Support Squadron
401	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
402	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
403	ATGM	Anti-Tank Guided Missile
404	ATGW	Anti-Tank Guided Weapon
405	ATK	Attack
406	ATL	Atlanta,Georgia,the largest city and capital of Georgia
407	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
408	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
409	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
410	ATO	Air Tasking Order,Australian Taxation Office
411	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
412	ATSD	(U.S.) Assistant Secretary of Defense
413	ATSDR	Agency for Toxic Substances and Disease Registry
414	ATV	All-Terrain Vehicle
415	ATWA	Air,Trees,Water,Animals
416	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
417	Au	Gold (Latin Aurum)
418	AUC	Ab Urbe Condita / Anno Urbis Conditae (Latin 'from the founding of the city' / 'in the year since the founding of the city') (of Rome),Area Under the Curve (concentration time curve; medicine)
419	AUS	Australia (ISO 3166 trigram)
420	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
421	Auslan	Australian Sign Language
422	AUT	Austria (ISO 3166 trigram)
423	AUTL	Army Universal Task List
424	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
425	Av	Aperture value (photographic mode)
426	aV	Attovolt
427	AVA	American Viticultural Area
428	AVB	Audio Video Bridging
429	AVDLR	Aviation Depot Level Repair
430	AVGP	Armoured Vehicle, General Purpose
431	AVIM	Aviation Intermediate Maintenance
432	AVLB	Armoured Vehicle Launched Body
433	AVM	Air Vice-Marshal, Arteriovenous malformation
434	AVO	Apprehended Violence Order
435	AVP	Arubaanse Volkspartij
436	AVP	Association of Volleyball Professionals
437	AVRE	Armoured Vehicle Royal Engineers
438	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
439	AVUM	Aviation Unit Maintenance
440	AVVO	Acute Vaginal Venereal Outbreak
441	AW	Aruba (ISO 3166 digram)
442	aW	Attowatt
443	AWA	American Wrestling Association
444	AWC	Air Warfare Centre
445	AWD	All Wheel Drive
446	AWE	Advanced Warfighting Experiment
447	AWP	Awaiting Parts (SM&R code)
448	AWSIM	Air Warfare SIMulation
449	AWST	Australian Western Standard Time
450	AWW	Above Water Warfare
451	AX	Åland Islands (ISO 3166 digram)
452	AXP	Ambulance eXchange Point
453	AY	Antarctica (FIPS 10-4 territory code)
454	AYBABTU	All Your Base Are Belong To Us
455	AYU	As Yet Unknown
456	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
457	AZE	Azerbaijan (ISO 3166 trigram)
458	AZUR	Actions en zone urbaine (French for: Urban Operations)
459	BAR	Barbados (IOC trigram,but not FIFA or ISO 3166),British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD , Binational Agricultural Research and Development fund (between the US and Israel),BARDA , Biomedical Advanced Research and Development Agency,BART , Bay Area Rapid Transit,BAS , Battalion Aid Station,BASE , Building,Antenna,Span,Earth (parachute from),BASF , Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory,a German chemicals company),BASIC , Beginner's All-purpose Symbolic Instruction Code (acronym was added later,originally it was simply Basic),BAT , Basic Aid Training,BATF , U.S. Bureau of Alcohol,Tobacco,and Firearms,BATS , Behavior Analysis Training System ,Bradley Advanced Training System,BATTeRS , Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit]
460	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
461	BBB	Better Business Bureau,Blood-brain barrier
462	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
463	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
464	BBN	Bolt,Beranek and Newman
465	BBQ	Barbecue
466	BBS	Breeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC , U.K. Biotechnology and Biological Sciences Research Council,BBVA , Banco Bilbao Vizcaya Argentaria (Spanish bank)
467	BBYO	B'nai B'rith Youth Organization
468	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
469	BCA	Bachelor of Computer Application,Black Coaches & Administrators
470	BCC	Blind Carbon Copy
471	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
472	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
473	BEL	Belgium (ISO 3166 trigram)
474	BEN	Benin (ISO 3166 trigram)
475	BEO	Banquet Event Order
476	BERC	Business Environmental Resource Center
477	BER	Bit Error Rate
478	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
479	BHR	Bahrain (ISO 3166 trigram)
480	BNF	Backus-Naur Form (computing), British National Formulary
481	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
482	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
483	BNS	Bank of Nova Scotia
484	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
485	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
486	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
487	BoAML	Bank of America Merrill Lynch
488	BOC	British Orthodontic Society, British Oxygen Company
489	BÖC	Blue Öyster Cult
490	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
491	BOFH	Bastard Operator From Hell
492	BOGA	Bend Over and Grab Ankles
493	BOGOF	Buy One,Get One Free
494	BOGs	Bunch of Guys
495	BOI	Balance Of Investment,Basis Of Issue
496	BOL	Bolivia (ISO 3166 trigram)
497	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
498	BOPD	Barrel of Oil Per Day
499	BOS	Battlefield Operating System
500	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
501	BP	Battle Position,British Petroleum (today,BP does not officially stand for anything),Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
502	BPV	Battlefield Planning Visualization,Bovine papillomavirus
503	BQ	British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire,Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code)
504	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
505	BRA	Brazil (ISO 3166 trigram)
506	BRAG	Bicycle Ride Across Georgia
507	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
508	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
509	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
510	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
511	BSN	Baloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
512	BSNL	Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
513	BSoD	Blue Screen of Death (distinct from BSD)
514	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
515	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
516	BSW	British Standard Whitworth (screw thread)
517	BSX	Bendigo Stock Exchange
518	BT	Baal teshuva (Hebrew,'master of repentance') ,used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph,Bhutan (FIPS 10-4 country code; ISO 3166 digram),BitTorrent,British Telecom,the former name of the company now known as BT Group,BTDT , Been There,Done That,Bti , Bacillus thuringiensis israelensis,BTID , Battlefield Target Identification Device,BTIS , Battlefield Target Identification System
519	Bt	Baronet,Bacillus thuringiensis
520	BTO	Built To Order
521	BTP	British Transport Police
522	BTR	Bronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
523	BTU	British Thermal Unit
524	BTW	By The Way
525	BU	Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989)
526	BUAV	British Union for the Abolition of Vivisection
527	BUG-E	Battlefield Universal Gateway Equipment ('buggy')
528	BUNO	Bureau Number (aircraft serial number)
529	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
530	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
531	BVD	Bradley,Voorhees & Day (underwear manufacturer)
532	BVR	Beyond Visual Range
533	BVT	Bouvet Island (ISO 3166 trigram)
534	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
535	BW	Bring Wedges (ISO digram)
536	BW	Botswana (ISO 3166 digram)
537	BWA	Botswana (ISO 3166 trigram)
538	BWARS	Bees,Wasps & Ants Recording Society
539	BWC	Biological and Toxin Weapons Convention
540	BWR	Boiling-Water Reactor
541	BX	Base eXchange
542	BY	Burundi (FIPS 10-4 country code), Belarus (ISO 3166 digram), Bavaria
543	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
544	BYOC	Bring Your Own Computer (play on BYOB)
545	BYOF	Bring Your Own Flask
546	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
547	BYU	Brigham Young University
548	BZ	Belize (ISO 3166 digram)
549	BZP	Benzylpiperazine
550	C	Carbon, Coulomb, One Hundred (in Roman numerals)
551	c	Centi
552	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
553	c2c	the British rail company formerly known as LTS Rail
554	Ca	Calcium
555	CA	California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
556	CAA	Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association
557	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
558	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
559	CACM	Central American Common Market
560	CACM	Communications of the ACM
561	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
562	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
563	CADPAT	CAnadian Disruptive PATtern
564	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
565	CAEn	Close Action Engagement (constructive simulation)
566	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
567	CAFAD	Combined Arms For Air Defence
568	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
569	CAFE	Corporate Average Fuel Economy standard
570	CAI	Computer Assisted Instruction
571	CAIR	Council on American-Islamic Relations
572	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
573	CALL	Center for Army Lessons Learned
574	CALM	Communications,Air-interface,Long and Medium range
575	CalPERS	California Public Employees' Retirement System
576	Caltrans	California Department of Transpotation
577	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
578	CAMRA	CAMpaign for Real Ale
579	CAN	Canada (ISO 3166 trigram)
580	CANDU	CANada Deuterium Uranium (nuclear reactor design)
581	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
582	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
583	CARE	Citizens Association for Racial Equality (former New Zealand organisation),Community database on Accidents on the Roads in Europe,Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe)
584	CARMONETTE	Computerized Monte Carlo Simulation
585	CARP	Computed Air Release Point
586	CART	Championship Auto Racing Teams (now defunct)
587	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
588	CASA	Civil Aviation Safety Authority
589	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
590	CASS	Command Activated Sonobuoy System
591	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
592	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
593	CAT	Community Acceptance Testing
594	CATK	Counterattack
595	CATS	Computer Active Technology Suspension
596	CATT	Combined Arms Tactical Trainer
597	CAV	Cavalry
598	CAVOK	Ceiling And Visibility OK ('Kav-okay')
599	CAW	Canadian Auto Workers (trade union)
600	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
601	CBASSE	Commission on Behavioral And Social Sciences and Education ('sea bass')
602	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
603	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
604	CBF	Confederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
605	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
606	CBLA	Comparative bullet lead analysis
607	CBM	Canadian Baptist Ministries
608	CBM	Commodore Business Machines
609	CBML	Coalition Battle Management Language
610	CBN	CardsApp Brand Number
611	CBOL	Consortium for the Barcode of Life
612	CBOT	Chicago Board of Trade
613	CBR	Case-Based Reasoning
614	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
615	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
616	CBS	Columbia Broadcasting System,Corps Battle Simulation
617	CBUS	Columbus,Ohio
618	CC	carbon copy
619	CCA	Counter Command Activity
620	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
621	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
622	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
623	CCF	Cartoon Cartoon Fridays
624	CCG	Canadian Coast Guard,Collectible Card Game
625	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
626	CCGH	Canadian Coast Guard Hovercraft
627	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
628	CCH	Computer-Controlled Hostile
629	CCIF	Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee,merged with the CCIT in 1956 to form the CCITT)
630	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
631	CCIR	Comité consultatif international pour la radio (French for Consultative Committee on International Radio,became the ITU Radiocommunication Sector,ITU-R,in 1992),Commander's Critical Information Requirements
632	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
633	CCITT	Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee,became the ITU Telecommunication Standardization Sector,ITU-T,in 1992)
634	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
635	CCM	Canada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name,one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music
636	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
637	CCOP	Coalition Common Operating/Operational Picture
638	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
639	CCPA	Consumer Credit Protection Act
640	CCR	Creedence Clearwater Revival
641	CCRAp	Canadian Conservative Reform Alliance party
642	CCRP	Command and Control Research Program
643	CCRTS	Command and Control Research and Technology Symposium
644	CCSCS	Consultative Committee for Space Data Systems
645	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
646	CCSIL	Command and Control Simulation Interface Language ('cecil')
647	CCSK	Cyclic Code Shift Keying
648	CCT	Current Commitments Team
649	Cd	Cadmium
650	cd	Candela
651	CD	Compact Disc
652	CD1	Cluster of Differentiation 1 (a small gene family)
653	CDA	UK Centre for Defence Analysis
654	CDD	Capabilities Development Document
655	CDE	Chemical Defence Equipment
656	CDIAC	Carbon Dioxide Information Analysis Center ('see-dee-ack')
657	CDipAF	Certified Diploma in Accounting and Finance
658	CDL	Commercial driver's license
659	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
660	CDMA	Code Division Multiple Access
661	CDMSII	Cryogenic Dark Matter Search II
662	Cdr	Commander
663	CDT	Central Daylight Time (UTC−5 hours)
664	Cdt	Commandant
665	Ce	Cerium
666	CE	Christian/Common Era
667	CEA	Campaign Effectiveness Analysis
668	CECOM	U.S. Army Communications and Electronics Command
669	CEDEX	Courrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
670	CEGEP	Collège d'enseignement général et professionnel (French,'College of General and Vocational Education')
671	CEI	Competitive Enterprise Institute
672	CENTCOM	United States Central Command
673	CENTO	Central Treaty Organization (Baghdad Pact)
674	CENZUB	Centre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
675	CEO	Chief Executive Officer
676	CEP	Circular Error Probable
677	CEPT	Conférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
678	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
679	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
680	CERGA	Centre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
681	CERN	Centre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
682	CERT	Computer Emergency Response Team
683	CESS	Centre for Earth Science Studies (India)
684	CEST	Central European Summer Time
685	CET	Central European Time
686	CEWC	Council for Education in World Citizenship
687	Cf	Californium
688	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
689	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
690	CFAR	Christine's,Federal Acquisition Regulation
691	CFC	ChloroFluoroCarbon,Canadian Fish Company
692	CFES	Continuous Flow Electrophoresis System
693	CFFZ	Call For Fire Zone
694	CFG	Context-free grammar,Control flow graph
695	CFHT	Canada-France-Hawaii Telescope
696	CFI	Center for Inquiry (CSICOP)
697	CFL	Canadian Football League,Co-ordinated Fire Line
698	CFLCC	Coalition Forces Land Component Command
699	CFM	Certified Facilities Manager
700	CFO	Chief Financial Officer
701	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
702	CFR	Code of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
703	CFRP	Carbon fibre reinforced plastic
704	CFS	Chronic Fatigue Syndrome
705	CFSP	Common Foreign and Security Policy
706	CFU	Colony Forming Unit in Microbiology
707	CFV	Cavalry Fighting Vehicle
708	CFZ	Critical Friendly Zone
709	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
710	CGH	Comparative Genomic Hybridisation
711	CGIG	Cross-Government Implementation Group
712	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
713	CGS	Chief of the General Staff
714	CGT	Capital Gains Tax
715	ch	ch(L) is used to denote the Chern character of a line bundle
716	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
717	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
718	CHAOS	Cambridge Heart Anti-Oxidant Study
719	CHAPS	Clearing House Automated Payment System
720	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
721	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
722	CHI	Columbia Helicopters,Inc
723	CHiP	California Highway Patrol
724	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
725	CHL	Chile (ISO 3166 trigram)
726	CHLA	Core Historical Literature of Agriculture
727	CHN	China (ISO 3166 trigram)
728	CHOGM	Commonwealth Heads of Government Meeting
729	CHPSO	California Hospital Patient Safety Organization
730	CHRS	Canadian Heart Rhythm Society
731	CHT	Certified Hand Therapist
732	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
733	Ci	Curie
734	CIA	Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
735	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
736	CIB	Complete In Box (Internet auction/trading listings)
737	CIBC	Canadian Imperial Bank of Commerce
738	CICS	Customer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
739	CID	Certified Interior Designer
740	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
741	CIF	Cost,Insurance,and Freight (Paid) (shipping)
742	CIMMYT	Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
743	CINC	Commander in Chief
744	CINEOS	Campo Imperatore Near-Earth Object Survey
745	CIO	Chief information officer,Congress of Industrial Organizations
746	CIPE	(European) Centre for International Political Economy
747	CIR	(Commander's) Critical Information Requirements
748	CIR	Corotating Interaction Region
749	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
750	CISA	(U.S.) C4I Integration Support Activity
751	CISB	Complete In Sealed Box (Internet auction/trading listings)
752	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
753	CISSP	Certified Information Systems Security Professional
754	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
755	CIV	Côte d'Ivoire (ISO 3166 trigram)
756	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
757	CIVPOP	Civilian Population
758	CIWS	Close-In Weapon System
759	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
760	CJC	Canadian Jewish Congress,Cold Junction Compensation
761	CJCS	Chairman of the Joint Chiefs of Staff
762	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
763	CJO	Chief of Joint Operations
764	CJTF	Combined Joint Task Force
765	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
766	CKA	commonly known as, Canada Kicks Ass
767	CKND	Codename: Kids Next Door
768	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
769	Cl	Chlorine
770	CLA	Clutterers Anonymous
771	CLEC	Competitive Local Exchange Carrier
772	CLEMARS	California Law Enforcement Mutual Aid Radio System
773	CLIC	Compact LInear Collider
774	CLO	Cornell Lab of Ornithology
775	CLOS	Command to Line-Of-Sight (missile control system)
776	CLPFC	CentroLateral PreFrontal Cortex
777	CLRP	College Loan Repayment Program
778	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
779	Cm	Curium
780	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
781	CMHC	Canada Mortgage and Housing Corporation
782	CMIIAW	Correct me if I am wrong
783	CMIS	Common management information service
784	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
785	CMLL	Consejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
786	CMM	Capability Maturity Model
787	CMMC	Corps Materiel Management Centre
788	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
789	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
790	CMP	Common [Operating/Operational] Maritime Picture
791	CMPD	Charlotte Mecklenburg Police Department
792	CMPD	Chronic Myeloproliferative Disease
793	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
794	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
795	CMT	Country Music Television
796	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
797	CMW	Marconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales,Australia),Chicago,Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit)
798	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
799	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
800	CNA	Center for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company),National (Fire Insurance Company),and American (Casualty Company),the three companies that merged to form what is now known as CNA Financial
801	CNBC	Consumer News and Business Channel
802	CND	Campaign for Nuclear Disarmament,Computer Network Defence
803	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
804	CNF	Cost and Freight
805	CNI	Clinical Nursing Intern
806	CNI	Communications,Navigation and Identification
807	CNN	Cable News Network,Cellular Nonlinear Network
808	CNV	Copy-Number Variable (genetics)
809	Co	Cobalt
810	COB	Close Of Business [day]
811	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
812	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
813	CoDA	Co-Dependents Anonymous
814	COGENT	Cognitive Objects within a Graphical EnviroNmenT
815	COIL	Chemical Oxygen Iodine Laser
816	COK	Cook Islands (ISO 3166 trigram)
817	COL	Colombia (ISO 3166 trigram)
818	COLA	Cost Of Living Adjustment
819	CONAD	U.S. Continental Air Defense Command
820	CONMEBOL	Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
821	CONUS	Continental United States
822	COO	Chief Operating Officer
823	COPE	U.K. Committee On Publication Ethics
824	COPUS	U.K. Committee on the Public Understanding of Science
825	CORD	Common Operational Requirements Document
826	CORE	Consortium for Oceanographic Research and Education
827	COS	Cooper Ornithological Society
828	COSER	COoperative SERvice
829	CoT	Car of Tomorrow (former NASCAR race car design)
830	COTS	Commercial Off The Shelf
831	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
832	CPA	Certified Public Accountant
833	CPAC	Conservative Political Action Conference,Cable Public Affairs Channel ('see-pack')
834	CPCU	Certified Property Casualty Underwriter
835	CPD	Capabilities Production Document
836	CPE	Certificate of Proficiency in English
837	CPE	Certified Professional Ergonomist
838	CPF	Calibration Parameter File,Canadian Patrol Frigate
839	CPG	Clinical Practice Guideline
840	CPIM	Certification on Production and Inventory Management
841	CPIR	Computationally-Private Information Retrieval
842	CPON	Certified Pediatric Oncology Nurse
843	CPPCC	Chinese People's Political Consultative Conference
844	CPR	Canadian Pacific Railway
845	CPR	Cardiopulmonary resuscitation
846	CPSM	Continuous Phase Shift Modulation
847	CPSU	Communist Party of the Soviet Union
848	CPT	Contingency Planning Team
849	CPU	Contract Postal Unit
850	CPV	Cape Verde (ISO 3166 trigram)
851	CPX	Command Post eXercise
852	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
853	CQD	Close Quarters Drill (Morse distress code preceding SOS: CQ 'calling all stations',D 'Distress'; often incorrectly interpreted as 'Come Quick,Distress')
854	Cr	Chromium
855	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
856	CRAM	Combined Radiometric Correction Model
857	CRD	Capstone Requirements Document
858	CREB	Cyclic AMP-response Element Binding (protein)
859	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
860	CREN	Christian Real Estate Network Real Estate Association
861	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
862	CRIPL	Consolidated Remain-In-Place List
863	CRM	Cardiac Rhythm Management,Customer Relationship Management
864	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
865	CRP	Committee for the Re-Election of the President,Control and Reporting Post
866	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
867	CRTC	Canadian Radio-television and Telecommunications Commission
868	Cs	Caesium
869	CSA	Canadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area,Czech Airlines,C/S/A,CINC,Service,and Agency
870	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
871	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
872	CSG	Corps Support Group
873	CSI	see entry
874	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
875	CSIP	Commercial Stable Image Platform (AMD)
876	CSIS	Canadian Security Intelligence Service ('seessiss'),(U.S.) Center for Strategic & International Studies
877	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
878	CSL	U.K. Central Science Laboratory
879	CSPI	Center for Science in the Public Interest
880	CSR	Control Supply Rate
881	CSR	Corporate Social Responsibility
882	CSRC	Conflict Studies Research Centre
883	CSRF	Cross-Site Request Forgery
884	CST	Central Standard Time (UTC−6 hours)
885	CT	Computed tomography (medical scan also known as a CAT scan),Central Time zone,Chrono Trigger (Computer/Video games),Connecticut (postal symbol),Canterbury (postal symbol),Chhattisgarh (Indian state code)
886	CTA	Central African Republic (FIFA trigram,but not ISO 3166 or IOC),Chicago Transit Authority,Comando-Geral de Tecnologia Aerospacial (Portuguese,[Brazilian] 'General Command for Aerospace Technology')
887	CTBT	Comprehensive [Nuclear] Test Ban Treaty
888	CTDB	Compact Terrain Data Base (file format)
889	CTE	Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984),Chronic traumatic encephalopathy
890	CTGF	connective tissue growth factor
891	CTI	Co-operative Target Identification
892	CTIL	Critical Tracked Items List
893	CTIS	Central Tire Inflation System
894	CTMS	Clinical Trial Management System
895	CTO	Chief Technical Officer,Chief Technology Officer
896	CTS	Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
897	CTSS	Compatible Time-Sharing System
898	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
899	CTVT	Canine Transmissible Venereal Tumour
900	Cu	Copper (Latin Cuprum)
901	CUB	Cuba (ISO 3166 trigram)
902	CUCV	Commercial Utility Cargo Vehicle
903	CUNY	City University of New York ('CUE-knee')
904	CUPE	Canadian Union of Public Employees ('CUE-pee')
905	CUPS	Common Unix Printing System
906	CUPW	Canadian Union of Postal Workers
907	CUREA	Consortium for Undergraduate Research and Education in Astronomy
908	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
909	CUW	Curaçao (ISO 3166 trigram)
910	CV	curriculum vitae (résumé)
911	CVLL	Crypto Variable Logic Label
912	CVSD	Continuous Variable Slope Delta (modulation)
913	CVT	Continuously Variable Transmission
914	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
915	CWC	Chemical Weapons Convention
916	CWRU	Case Western Reserve University
917	CWS	Canadian Wildlife Service
918	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
919	CXR	Christmas Island (ISO 3166 trigram)
920	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
921	CYM	Cayman Islands (ISO 3166 trigram)
922	CZE	Czech Republic (ISO 3166 trigram)
923	CZF	(Christian Zombie Fan)
924	CZMA	(US) Coastal Zone Management Act
925	d	Deci
926	D	Deuterium
927	DADVSI	Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French,'Law on copyrights and related rights in the information society')
928	DAES	Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis,Experimentation and Simulation
929	DAF	Dissolved Air Flotation,a technique used in water treatment
930	DAFIF	Digital Aeronautical Flight Information File
931	DAK	Disney's Animal Kingdom
932	DAO	Division Ammunition Officer
933	DAQ	Data acquisition,Delivered Audio Quality
934	DARE	Drug Abuse Resistance Education
935	DARO	(U.S.) Defense Airborne Reconnaissance Office
936	DARPA	U.S. Defense Advanced Research Projects Agency
937	DART	Disaster Assistance Response Team,Dublin Area Rapid Transit
938	DAS	Defensive Aids Suite
939	DASD	(U.S.) Deputy Assistant Secretary of Defense
940	DASL	Datapoint's Advanced Systems Language
941	DAU	(U.S.) Defense Acquisition University
942	DAWN	(U.S.) Drug Abuse Warning Network
943	dB	Decibel
944	DB	Deutsche Bahn
945	Db	Dubnium
946	DBA	De Bellis Antiquitatis (miniature wargaming rules)
947	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
948	DBDO	Desert BDO
949	DBE	Dame Commander of the Order of the British Empire
950	DBF	Detection By Fire (weapon launch signature)
951	DBR	De Bellis Renationis (miniature wargaming rules)
952	DBRA	Davis-Bacon Related Acts
953	DBS	Direct Broadcast Services (television)
954	DC	da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current,District of Columbia (postal symbol),Douglas Aircraft Company,Dublin Core,Duty Cycle
955	DCA	Defensive Counter Air,Drum Corps Associates,DiChloroAcetate
956	DCAA	(U.S.) Defense Contract Audit Agency
957	DCAS	Devon and Cornwall Archery Society
958	DCC	Dallas Christian College
959	DCD	[Organ] Donation after Cardiac Death
960	DCE	Data Communication Equipment
961	DCFC	Death Cab for Cutie
962	DCI	Detection,Classification and Identification,Drum Corps International,Duellists' Convocation International,now known simply by the initials
963	DCL	Disney Cruise Line
964	DCN	Deacon
965	DCOM	Disney Channel Original Movie
966	DCSOPS	Deputy Chief of Staff for Operations and plans
967	DCW	Digital Chart of the World
968	DCYSC	Discovery Channel Young Scientist Challenge
969	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
970	DDA	Deputy District Attorney
971	DDN	U.S. Defense Data Network
972	DDS	Doctor of Dental Surgery
973	DDT	Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
974	DE	Delaware (postal symbol),Germany (ISO 3166 digram)
975	DEA	Drug Enforcement Administration
976	DEA	Drug Enforcement Agency
977	DEC	Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
978	DeCA	(U.S.) Defense Commissary Agency
979	DEFCON	Defence readiness condition
980	DEFRA	(UK) Department for Environment,Food and Rural Affairs
981	DELT	Dual Ended Line Test (ing)
982	DEM	Data Exchange Mechanism,Digital Elevation Model
983	DEN	Denmark (IOC and FIFA trigram,but not ISO 3166)
984	DEPSECDEF	(U.S.) Deputy Secretary of Defense
985	DERA	British Defence Evaluation and Research Agency (1995-2001)
986	DES	Deep Ecliptic Survey
987	DEU	Germany (ISO 3166 trigram)
988	DF	Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for 'federal district')
989	DFAS	(U.S.) Defense Finance and Accounting Service
990	DFB	Deutscher Fußball-Bund (German for 'German Football Association')
991	DFCB	Data Format Control Book
992	DfID	UK Department for International Development
993	DFM	Discrete Field Model see Superluminal motion
994	DFM	Dynamic Flowgraph Methodology
995	DFSP	Dermatofibrosarcoma protuberans
996	DfT	UK Department for Transport
997	DFTBA	Don't Forget To Be Awesome,a term commonly used by the Vlogbrothers
998	DG	Dei gratia (Latin,'by the grace of God'),Director-General,Data General
999	DGA	Direction générale des armées (French 'Armed Forces General Directorate')
1000	DGPS	Differential GPS
1001	DGZ	Desired Ground Zero
1002	DHA	DocosaHexaenoic Acid
1003	DHHS	(U.S.) Department of Health and Human Services
1004	DHRA	(U.S.) DoD Human Resources Activity
1005	DHS	U.S. Department of Homeland Security
1006	DHSS	UK Department of Health and Social Security
1007	DHTFYSS	U.S. Don't Have Time For You Silly S****
1008	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
1009	DIA	U.S. Defense Intelligence Agency
1010	DIAC	Department of Immigration and Citizenship (Australia) [1]
1011	DiC	Design Island Centre (computing usually used in a teaching situation)
1012	DICASS	DIrectional Command Activated Sonobuoy System
1013	DIFAR	DIrectional Frequency Analysis and Recording
1014	DIME	Dense Inert Metal Explosive
1015	DIP	Dual In-line Package (electronics)
1016	DIPS	Defense independent pitching statistics
1017	DIR	Defence Industrial Research
1018	DISCOM	Division Support Command
1019	DISE	Deployable Intelligence Support Element
1020	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
1021	DITY	Do-It-Yourself
1022	DIVAD	Division Air Defence
1023	DIY	Do It Yourself
1024	DJI	Djibouti (ISO 3166 trigram)
1025	DK	Denmark (ISO 3166 digram)
1026	DL	Dexter's Laboratory
1027	DLIC	Detachment Left-In-Contact
1028	DLIR	Depot-Level Inspection and Repair
1029	DLPMC	DorsoLateral PreMotor Cortex
1030	DLRP	Data Link Reference Point
1031	DLS	Deep Lens Survey
1032	DLSA	(U.S.) Defense Legal Services Agency
1033	DLSc	Diploma in Library Science
1034	DLTBGYD	Don't let the bastards grind you down
1035	DMC	(U.S.) Defense Management Council
1036	DMCA	Digital Millennium Copyright Act
1037	DMM	Digital Multimeter
1038	DMOC	Distributed Mission Operations Centre
1039	DMPA	(U.S.) Defense Medical Programs Activity
1040	DMPFC	DorsoMedial PreFrontal Cortex
1041	DMPK	Drug Metabolism and Pharmacokinetics
1042	DMRB	Design Manual for Roads and Bridges
1043	DMS	U.S. Defense Message System
1044	DMSP	U.S. Defense Meteorological Satellite Program
1045	DMT	Dimethyltryptamine
1046	DMV	Department of Motor Vehicles
1047	DMZ	DeMilitarized Zone
1048	DN	Deacon
1049	DNAW	Day Night All Weather
1050	DNDi	Drugs for Neglected Diseases initiative
1051	DNDO	U.S. Domestic Nuclear Detection Office
1052	DNK	Denmark (ISO 3166 trigram)
1053	DNM	Defence Nuclear Material
1054	DNR	Do Not Resuscitate
1055	DNS	Domain Name System
1056	DOB	Date Of Birth
1057	DOD	U.S. Department of Defense
1058	DODAF	U.S. Department of Defense Architectural Framework
1059	DoDD	U.S. Department of Defense Directive
1060	DoDEA	(U.S.) Department of Defense Education Activity
1061	DOE	U.S. Department of Energy
1062	DOHC	Dual-OverHead-Cam engine
1063	DOI	U.S. Department of the Interior
1064	DORA	Defence of the Realm Act
1065	DOS	Density of State
1066	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1067	DotD	Deal of the Day (marketing gimmick)
1068	DOW	Died of Wounds
1069	DP	Division de production (Algerian petroleum company)
1070	DPA	UK Defence Procurement Agency
1071	DPCO	Double-Pole Change Over
1072	DPDT	Double-Pole Double-Throw
1073	DPI	Dots Per Inch
1074	DPICM	Dual-Purpose Improved Conventional Munition
1075	DPKO	UN Department for Peacekeeping Operations
1076	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1077	DPPDB	Digital Point Positioning Database
1078	DPRK	Democratic People's Republic of Korea
1079	DPST	Double-Pole Single-Throw
1080	DRC	Democratic Republic of the Congo
1081	DRDC	Defence Research & Development Canada
1082	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1083	DRES	Defence Research Establishment Suffield (obsolete 2002)
1084	DRET	Defence Research Establishment Toronto (obsolete 2002)
1085	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1086	DRIC	(U.S.) Defense Research Information Center
1087	DRMS	(U.S.) Defense Revitalization and Marketing Service
1088	DRPR	Drawing Practices
1089	DRT	Document Related Technologies
1090	Ds	Darmstadtium
1091	DSAS	Disney Sing Along Songs
1092	DSB	(U.S.) Defense Science Board
1093	DSCS	U.S. Defense Satellite Communications System
1094	DSCSOC	DSCS Operations Center
1095	DSE	Dry Sheep Equivalent
1096	DSG	Direct-Shift Gearbox
1097	DSID	Dismounted Soldier Identification System
1098	DSL	Digital Subscriber Line
1099	DSLR	Digital single-lens reflex (camera)
1100	DSM	Diagnostic and Statistical Manual of Mental Disorders
1101	DSN	Deep Space Network
1102	DSPL	Design Specialists and Plans Language
1103	DSR	Deformed Special Relativity
1104	DST	Daylight Saving Time
1105	DSTL	British Defence Science and Technology Laboratory
1106	DSWA	(U.S.) Defense Special Weapons Agency
1107	DTA	Dental Technologists Association
1108	DTD	Digital Terrain Data
1109	DTG	Date-Time Group
1110	DTH	Direct To Home (television)
1111	DTI	UK Department of Trade and Industry
1112	DTIC	(U.S.) Defense Technical Information Center
1113	DTL	Diode-Transistor Logic (electronics)
1114	DTMF	Dual-tone multi-frequency signaling
1115	DTO	Disruptive Technology Office (was ARDA)
1116	DTR	Determine The Relationship
1117	DTSA	(U.S.) Defense Technology Security Administration
1118	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1119	DUSD	(U.S.) Deputy Under-Secretary of Defense
1120	DVLC	UK Driver and Vehicle Licencing Centre
1121	DVM	Doctor of Veterinary Medicine
1122	DVO	Direct View Optics
1123	DVOM	Digital Volt-Ohm Meter
1124	DVP	various meanings (disambiguation page)
1125	DW	Drum Workshop
1126	DWIM	Do What I Mean
1127	DWM	Doctor Who Magazine
1128	DWTS	Dancing with the Stars
1129	DWW	Down with Webster
1130	DXA	Dual-energy X-ray Absorptiometry
1131	DXM	DeXtroMethorphan
1132	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1133	Dy	Dysprosium
1134	DZA	Algeria (ISO 3166 trigram)
1135	E	East
1136	EABU	Explain Acronyms Before Use
1137	EAC	Echelons Above Corps
1138	EAPC	Euro-Atlantic Partnership Council
1139	EAST	Experimental Advanced Superconducting Tokamak
1140	EBD	Electronic Brake Distribution
1141	EBE	Extraterrestrial Biological Entity
1142	EBSA	Employee Benefits Security Administration
1143	EBW	Electron Beam Welding
1144	EBW	Exploding BridgeWire
1145	ECASS	European Centre for Analysis in the Social Sciences [1]
1146	ECBR	European Coalition for Biomedical Research
1147	ECCM	Electronic Counter-Counter-Measures
1148	ECFS	Electronic Case Filing System
1149	ECG	Electrocardiogram
1150	ECHR	European Convention on Human Rights
1151	ECJ	European Court of Justice
1152	ECL	Emitter Coupled Logic (electronics)
1153	ECommHR	European Commission on Human Rights
1154	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1155	ECT	ElectroConvulsive Therapy
1156	ECtHR	European Court of Human Rights
1157	EDA	European Defence Agency
1158	EDAC	Error Detection And Correction
1159	EDCS	Environmental Data Coding Specification
1160	EDH	Eastman Dental Hospital
1161	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1162	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1163	EEC	European Economic Community (predecessor of the EU)
1164	EEG	ElectroEncephaloGram
1165	EENT	End Evening Nautical Twilight
1166	EEO	Equal Employment Opportunity
1167	EEOC	(U.S.) Equal Employment Opportunity Commission
1168	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1169	EFF	Electronic Frontier Foundation
1170	EFL	English as a Foreign Language
1171	EFM	Enterprise Feedback Management
1172	EFOA	European Fuel Oxygenates Association
1173	EFSA	European Food Safety Authority
1174	EFT	Electronic Fund Transfer
1175	EFV	Expeditionary Fighting Vehicle
1176	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1177	EGCG	EpiGalloCatechin-3-Gallate
1178	EGIS	Erieye Ground Interface Segment
1179	EGRET	Energetic Gamma-Ray Experiment Telescope
1180	EGY	Egypt (ISO 3166 trigram)
1181	EHF	Extremely High Frequency
1182	EHR	Equipment History Record
1183	Ei	Exbi
1184	EI	Ireland (FIPS 10-4 country code; from Éire)
1185	EIA	Environmental Impact Assessment
1186	EIAH	Encyclopedia of Iranian Architectural History
1187	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1188	EIC	East India Company
1189	EICS	East India Company's Service
1190	eID	electronic ID
1191	EIRP	Effective Isotropic Radiated Power
1192	EIS	Environmental Impact Statement
1193	EJ	Exajoule
1194	EKG	Electrocardiogram (from German Elektrokardiogramm)
1195	EKMS	Electronic Key Management System
1196	EL	Exalitre
1197	ELINT	Electronic Intelligence
1198	ELL	English Language Learner
1199	ELM	Edge-Localised Mode (plasma physics)
1200	ELO	Electric Light Orchestra
1201	ELSS	Emergency Life Support Stores
1202	EM	ElectroMagnetism/ElectroMagnetic
1203	Em	Exametre
1204	EMA	European Medicines Agency
1205	EMCON	(Electromagnetic) Emissions Control
1206	EMDG	Euro-Missile Dynamics Group
1207	EMDR	Eye Movement Desensitisation and Reprocessing
1208	EMEA	Europe,Middle East and Africa
1209	EMG	ElectroMyoGraph
1210	EMP	ElectroMagnetic Pulse
1211	EMS	Emergency Medical Services
1212	EMT	Emergency Medical Technician
1213	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1214	ENE	East North-East
1215	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1216	ENTEC	Euro NATO Training Engineer Centre
1217	ENVL	Envelope
1218	ENY	Enemy
1219	EOD	Explosive Ordnance Disposal
1220	EOG	ElectroOculoGraphy
1221	EOM	End of Message
1222	EOSAT	Earth Observation Satellite
1223	EOSDIS	Earth Observation Satellite Data and Information System
1224	EP	European Parliament
1225	EP	Extended play
1226	EPCOT	Experimental Prototype Community Of Tomorrow
1227	EPGS	EOS Polar Ground Sites
1228	EPIRB	Emergency Position Indicating Radio Beacon
1229	EPL	English Premier League
1230	EPOS	Electronic Point Of Sale
1231	EPPA	Employee Polygraph Protection Act
1232	EPR	European Pressurised [Nuclear] Reactor
1233	EQ	Emotional Quotient
1234	Er	Erbium
1235	ERCIM	European Research Consortium for Informatics and Mathematics
1236	ERI	Eritrea (ISO 3166 trigram)
1237	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1238	EROS	Earth Resources Observation System
1239	ERP	Engineer Regulating Point
1240	ERR	Eesti Rahvusringhääling
1241	ERS	Earth Resources Survey
1242	ERTS	Earth Resources Technology Satellite (became Landsat)
1243	ERV	Endogenous RetroVirus
1244	ESD	ElectroStatic Discharge
1245	ESDP	European Security and Defence Policy
1246	ESE	East South-East
1247	ESH	Western Sahara (ISO 3166 trigram)
1248	ESL	English as a Second Language
1249	ESM	Electronic warfare Support Measures
1250	ESO	European Southern Observatory
1251	ESOL	English for Speakers of Other Languages
1252	ESPN	Entertainment and Sports Programming Network
1253	ESU	Emergency Services Unit
1254	ESV	Engineer Support Vehicle
1255	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1256	ETH	Ethiopia (ISO 3166 trigram)
1257	ETI	Extra-Terrestrial Intelligence
1258	ETLA	Extended TLA
1259	ETT	Embedded Training Team
1260	Eu	Europium
1261	EUCOM	(U.S.) European Command
1262	EUUSA	European Union and United States of America
1263	EV	Exavolt
1264	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1265	EWTN	Eternal Word Television Network
1266	Exatesla	Extra Terrestrial
1267	EXREP	Expeditious Repair (SM&R code)
1268	f	Femto
1269	fA	Femtoampere
1270	FA	Food Addicts in Recovery Anonymous
1271	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1272	FAAD	Forward Area Air Defence
1273	FAADEZ	Forward Area Air Defence Engagement Zone
1274	FAAFP	Fellow of the American Academy of Family Physicians
1275	FAAN	Fellow of the American Academy of Neurology
1276	FAAN	Fellow of the American Academy of Nursing
1277	FAAQ	Frequently Asked and Anticipated Questions
1278	FAASV	Field Artillery Ammunition Supply Vehicle
1279	FAB	Feline Advisory Bureau (UK feline charity)
1280	FACA	(US) Federal Advisory Committee Act
1281	FACH	Fuerza Aérea de Chile
1282	FACN	Fellow of the American College of Nutrition
1283	FACP	Fellow of the American College of Physicians
1284	FACTS	Flexible Alternating Current Transmission System
1285	FAM	Foreign Affairs Manual
1286	FAO	Food and Agriculture Organization
1287	FAPA	Fellow of the American Psychological Association
1288	FAPHA	Fellow of the American Public Health Association
1289	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1290	FASCAM	Family of Scatterable Mines[1]
1291	FASD	Fetal Alcohol Spectrum Disorder
1292	FASEB	Federation of American Societies for Experimental Biology
1293	FAT	Field Artillery Tractor
1294	FAVS	Future Armoured Vehicle System
1295	FAW	Football Association of Wales
1296	FBCS	Fellow of the British Computer Society
1297	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1298	FBIS	Foreign Broadcast Information Service
1299	FBM	Board foot
1300	fC	Femtocoulomb
1301	FCC	U.S. Federal Communications Commission
1302	FCE	First Certificate in English
1303	FCF	Financial Free Cash Flow
1304	FCLA	Fraud Claims Law Associate
1305	FCO	UK Foreign and Commonwealth Office
1306	FCW	Florida Championship Wrestling
1307	FD	Falun Dafa
1308	FDA	Food and Drug Administration (U.S.)
1309	FDBK	(I) Feedback
1310	Fe	Iron (Latin Ferrum)
1311	FEAST	Forum for European-Australian Science and Technology Cooperation
1312	FEATS	Festival of European Anglophone Theatrical Societies link title
1313	FEBA	Forward Edge of the Battle Area
1314	FED	Field Emission Display
1315	FEDEP	Federation Development Process (Simulation)
1316	FEF	Frontal Eye Field (neurophysiology)
1317	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1318	FENS	Federation of European Neuroscience Societies
1319	FES	Flywheel Energy Storage
1320	FEST	Frankfurt English Speaking Theatre link title
1321	FET	Field-effect transistor
1322	FEZ	Fighter Engagement Zone
1323	fF	Femtofarad
1324	FF	Final Fantasy
1325	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1326	FFC	Free For Chat
1327	FFE	Fukuoka Futures Exchange
1328	FFF	Fédération française de football (French for: French Football Federation)
1329	FFG	Guided Missile Frigate (hull classification symbol)
1330	FFOV	Forward Field Of View
1331	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1332	FFS	For Fuck's Sake
1333	FFT	Final Fantasy Tactics
1334	FG	Falun Gong
1335	fg	Femtogram
1336	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1337	FGOTUS	First Gentleman of the United States
1338	FGR	Flickr Group Roulette
1339	fH	Femtohenry
1340	FHFIF	Foster's Home for Imaginary Friends
1341	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1342	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1343	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1344	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1345	FIBUA	Fighting In Built-Up Areas
1346	FIC	Fellowship for Intentional Community
1347	FID	Foreign Internal Defence
1348	FIE	Fly-In Echelon
1349	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1350	FIFe	Fédération internationale féline (French for: International Feline Federation)
1351	FIFO	First In, First Out
1352	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1353	FIGJAM	Fuck I'm Good, Just Ask Me
1354	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1355	FIN	Finland (ISO 3166 trigram)
1356	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1357	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1358	FIS	Fédération internationale de ski (French for: International Ski Federation)
1359	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1360	FISH	Fluorescence In-Situ Hybridisation
1361	FiST	Fire Support Team
1362	FITS	Flexible Image Transport System
1363	FIU	Florida International University
1364	fJ	Femtojoule
1365	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1366	FJI	Fiji (ISO 3166 trigram)
1367	FJN	Financial Job Network
1368	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1369	fK	Femtokelvin
1370	FKSM	Fort Knox Supplemental Manual
1371	FKT	Fastest Known Time
1372	fL	Femtolitre
1373	FL	Florida (postal symbol)
1374	fl	floruit (Latin for: living) (genealogy)
1375	FLA	Florida,Front Line Assembly,Future Large Aircraft
1376	FLAB	Four-letter abbreviation
1377	FLAC	Free Legal Advice Centres
1378	FLAC	Free Lossless Audio Codec
1379	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1380	FLB	Forward Logistics Base
1381	FLET	Forward Line of Enemy Troops
1382	FLG	Falun Gong
1383	FLIP	Flight Information Publication
1384	FLIR	Forward Looking InfraRed (sensor)
1385	FLK	Falkland Islands (ISO 3166 trigram)
1386	FLOT	Forward Line of Own Troops
1387	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1388	FLQ	Free Legal Questions
1389	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1390	FLSA	Fair Labor Standards Act
1391	FLTSAT	Fleet Satellite
1392	FLTSATCOM	Fleet Satellite Communication System
1393	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1394	FM	Factory Mutual
1395	FM	Federal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code),Field Manual,Flight Manager,Frequency Modulation (electronics)
1396	fm	Femtometre
1397	Fm	Fermium
1398	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1399	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1400	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1401	FMCG	Fast Moving Consumer Goods
1402	FME	Formal Methods Europe
1403	FMECA	Failure Modes and Effect Criticality Analysis
1404	FMJD	Fédération Mondiale du Jeu de Dames
1405	FMLA	Family Medical Leave Act
1406	FoE	Friends of the Earth
1407	FOGC	Federal Oil and Gas Council
1408	FOH	Front Of House
1409	FOIA	Freedom of Information Act
1410	FOM	Federation Object Model
1411	FONSI	Finding of No Significant Impact
1412	FOO	Forward Observation Officer
1413	FOOP	Friends Of Organ Pipes (Volunteer group)
1414	FoS	Family of Systems
1415	FOSE	Fallout 3 Script Extender
1416	FOSE	Federal Office Systems Expo
1417	FOT	Free on truck
1418	FOTA	Fellow of the Orthodontic Technicians Association
1419	FOTC	Flight of the Conchords
1420	FOUO	For Official Use Only
1421	FP	French Polynesia (FIPS 10-4 territory code)
1422	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1423	FPS	Fire Prevention System
1424	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1425	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1426	Fr	Francium
1427	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1428	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1429	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1430	FRICBM	Full Range ICBM
1431	FRO	Faroe Islands (ISO 3166 trigram)
1432	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1433	FRSA	Fellow of the Royal Society of Art
1434	FRY	Federal Republic of Yugoslavia
1435	fs	Femtosecond
1436	fS	Femtosiemens
1437	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1438	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1439	FSCL	Fire Support Co-ordination Line
1440	FSE	Fire Support Element
1441	FSF	Free Software Foundation
1442	FSH	Follicle Stimulating Hormone
1443	FSI	Fuel Stratified Injection
1444	FSS	Fire Support Station
1445	FSSP	Families of Structurally Similar Proteins
1446	FSTC	Foreign Science Technology Center (now NGIC)
1447	fT	Femtotesla
1448	FTC	Federal Trade Commission
1449	FTE	Full Time Equivalent
1450	FTL	Faster Than Light
1451	FTS	Flight Termination System used during some rocket launches
1452	FTS	Fuck That Shit
1453	FU	Smoke (METAR Code)
1454	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1455	fV	Femtovolt
1456	fW	Femtowatt
1457	FW	Forward
1458	FWC	Football World Cup
1459	FWF	Fixed Word Format
1460	FWI	French West Indies
1461	FWIW	For What It's Worth
1462	FWS	U.S. Fish and Wildlife Service
1463	FWT	Fresh Water Tank
1464	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1465	FYA	For Your Agenda
1466	FYDP	Five-Year Defense Plan (U.S.)
1467	FYI	For Your Information
1468	FYROM	Former Yugoslav Republic of Macedonia
1469	FZDZ	Freezing Drizzle (METAR Code)
1470	FZFG	Freezing Fog (METAR Code)
1471	FZRA	Freezing Rain (METAR Code)
1472	g	Gram
1473	G3	Heckler & Koch G3
1474	GAAR	General Anti-Avoidance Rule (tax evasion)
1475	GAB	Gabon (ISO 3166 trigram)
1476	GABA	Gamma-AminoButyric Acid
1477	GAD	Generalized Anxiety Disorder
1478	GAF	Garfield and Friends
1479	GAO	U.S. Government Accountability Office
1480	GAW	Global Atmospheric Watch
1481	GBBC	Great (Global) Backyard Bird Count
1482	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1483	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1484	GCA	Graduate in Claims Administration
1485	GCD	see entry
1486	GCF	Greatest Common Factor
1487	GCI	Ground-controlled interception
1488	GCN	Gamma-ray burst Coordination Network
1489	GCS	Global Coordinate System
1490	GCSE	General Certificate of Secondary Education (UK)
1491	Gd	Gadolinium
1492	GD	Grenada (ISO 3166 digram)
1493	GDL	Game Definition Language
1494	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1495	GDR	German Democratic Republic (cf. DDR)
1496	GDW	Game Designers Workshop
1497	Ge	Germanium
1498	GEBCO	General Bathymetric Chart of the Oceans
1499	GEC	Great Engineering Challenge
1500	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1501	GEEP	Geophysical Equipment Exploration Platform
1502	GEN	Full General (four stars) in the U.S. Army
1503	GeV	Gigaelectron-volt
1504	GEV	Ground Effect Vehicle
1505	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1506	GFI	Ground Fault Interruptor (aka GFCI)
1507	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1508	GFN	Global Footprint Network
1509	GG	Georgia (FIPS 10-4 country code)
1510	GGK	Good God Karma
1511	GHA	Ghana (ISO 3166 trigram)
1512	GHB	gamma-Hydroxybutyric acid
1513	Gi	Gibi
1514	GIB	Gibraltar (ISO 3166 trigram)
1515	GIG	Global Information Grid
1516	GINO	Godzilla In Name Only
1517	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1518	GJD	Geocentric Julian Day
1519	GLAAD	Gay and Lesbian Alliance Against Defamation
1520	GLAC	General Ledger Accounting Code
1521	GLAST	Gamma-ray Large Area Space Telescope
1522	GLBA	Gramm-Leach-Bliley Act
1523	GLC	Gas-liquid chromatography
1524	GLP	Guadeloupe (ISO 3166 trigram)
1525	GLV	Gained Life Value
1526	Gm	Gigametre
1527	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1528	GMAC	General Motors Acceptance Corporation,the original name of the company now known as Ally Financial,Graduate Management Admission Council,G-MAC,Great Midwest Athletic Conference
1529	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1530	GMFSC	Ground Mobile Forces Satellite Communications
1531	GMO	Genetically Modified Organism
1532	GMPCS	Global Mobile Personal Communications by Satellite
1533	GNAS	Grand National Archery Society
1534	GNB	Guinea-Bissau (ISO 3166 trigram)
1535	GNP	Gross National Product
1536	GNQ	Equatorial Guinea (ISO 3166 trigram)
1537	GnRH	Gonadotropin-Releasing Hormone
1538	GO	Glorioso Islands (FIPS 10-4 territory code)
1539	GOA	General of the Army (United States only)
1540	GOAT	Greatest Of All Time
1541	GOC	General Officer Commanding
1542	GOES	Geostationary Operational Environmental Satellite
1543	GOP	Grand Old Party
1544	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1545	GOSC	General Officer Steering Committee
1546	GOSH	Great Ormond Street Hospital
1547	GOSP	Gas/Oil Separation Plant
1548	GOTS	Government off-the-shelf
1549	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1550	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1551	GPA	Grade Point Average
1552	GPC	Global Path Cache
1553	GPIB	General-Purpose Instrumentation/Interface Bus
1554	GPO	General Post Office
1555	GPPC	Genetics and Public Policy Center
1556	GPR	Ground-Penetrating Radar
1557	GPS	General Problem Solver,Global Positioning System
1558	GPT	General Purpose Technology, Get paid to surf (an online business model)
1559	GQ	Equatorial Guinea (ISO 3166 digram),Gentlemen's Quarterly (the original name of the magazine now known simply as GQ),Guam (FIPS 10-4 territory code),GR[edit]
1560	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1561	GRAIL	Gravity Recovery and Interior Laboratory
1562	GRAS	Generally recognized as safe (FDA list)
1563	GRB	Gamma-Ray Burst
1564	GRC	Greece (ISO 3166 trigram)
1565	GRD	Grenada (ISO 3166 trigram)
1566	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1567	grep	[search] Globally for Regular Expression,Print [lines]
1568	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1569	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1570	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1571	GRL	Greenland (ISO 3166 trigram)
1572	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1573	Gs	Gigasecond
1574	GSA	U.S. General Services Administration
1575	GSD	Graphical Situation Display
1576	GSGB	(God send glamour boy 9-10/10)
1577	GSK	GlaxoSmithKline [good sexual karma]
1578	GSN	Game Show Network
1579	GSO	General Services Officer (U.S. Department of State)
1580	GSOH	Good Sense Of Humour
1581	GSP	Georges St-Pierre (Canadian MMA fighter)
1582	GSR	Gun Shot Residue
1583	GSS	Generic Security Services
1584	GSW	Gunshot wound
1585	GTD	Getting Things Done
1586	GTG	Got To Go (Internet chat)
1587	GTGN	Getty Thesaurus of Geographic Names
1588	GTK	Good To Know (Internet chat)
1589	GTM	Guatemala (ISO 3166 trigram)
1590	GU	Guam (postal symbol; ISO 3166 digram)
1591	GUF	French Guiana (ISO 3166 trigram)
1592	GUILT	Gangliated Utrophin Immuno Latency Toxin
1593	GULCR	Grupo de Usuarios de Linux de Costa Rica
1594	GUT	Grand Unification Theory
1595	GWARS	Ground Warfare System (simulation)
1596	GWAS	Grand Western Archery Society
1597	GWOT	Global War on Terrorism
1598	GXE	Gene-enivronment interaction
1599	GXM	Matrox Graphics eXpansion Module
1600	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1601	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1602	h	Hecto
1603	HAARP	High Frequency Active Auroral Research Program
1604	HAART	Highly Active Anti-Retroviral Therapy
1605	HAI	Human Awareness Institute
1606	HAL	Hardware Abstraction Layer
1607	HALO	High Altitude Low Opening (parachute jump)
1608	HAM	Amateur radio operator
1609	HANS	Head And Neck Support (device used in many race cars)
1610	HARM	High-speed Anti-Radiation Missile
1611	HAW	Heavy Antitank Weapon
1612	HAWK	Homing All the Way Killer (air defence system)
1613	HAZ	Heat-Affected Zone
1614	HAZMAT	Hazardous Materials
1615	HBCD	HexaBromoCycloDodecane
1616	HBO	Home Box Office
1617	HBR	Harvard Business Review
1618	HBT	Heterojunction Bipolar Transistor
1619	HBV	Hepatitis B Virus
1620	HCCI	Homogeneous Charge Compression Ignition
1621	HCF	Highest Common Factor
1622	HCSC	Higher Command and Staff Course
1623	HDL	High-Density Lipoprotein
1624	HDM	Human Decision-Making
1625	HDRA	Henry Doubleday Research Association
1626	He	Helium
1627	HE	High Explosive
1628	HEAT	High Explosive Anti-Tank (ammunition)
1629	HEBA	Hellenic Basketball Clubs Association
1630	HEER	High-Explosive Extended Range (ammunition)
1631	HEIC	Honourable East India Company
1632	HEMP	High-Altitude Electromagnetic Pulse
1633	HEOSS	High Earth Orbit Space Surveillance
1634	HEP	High-Explosive Plastic (ammunition)
1635	HEPA	High-Efficiency Particulate Air (filter)
1636	HESV	Heavy Engineering Support Vehicle
1637	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1638	HEU	Highly Enriched Uranium
1639	Hf	Hafnium
1640	HF	High Frequency
1641	HFE	Human Fertilisation and Embryology (UK Act)
1642	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1643	HFEA	Human Fertilisation and Embryology Authority (UK)
1644	Hg	Mercury (Latin Hydrargyrum)
1645	HGC	UK Human Genetics Commission
1646	HGF	Human Growth Factor
1647	HGTV	Home & Garden Television
1648	HI	Hawaii (postal symbol)
1649	HIH	His (or Her) Imperial Highness
1650	HIM	His (or Her) Imperial Majesty
1651	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1652	HIMEZ	High Altitude Missile Engagement Zone
1653	HIMYM	How I Met Your Mother
1654	HIPAA	U.S. Health Insurance Portability and Accountability Act
1655	Hipparcos	HIgh Precision Parallax COllecting Satellite
1656	Hird	Hurd of interfaces representing depth (cf. HURD)
1657	HiRISE	High Resolution Imaging Science Experiment
1658	HIT	Health Information Technology
1659	HIV	Human Immunodeficiency Virus
1660	HIWT	Hobart Institute of Welding Technology
1661	HJD	Heliocentric Julian Day
1662	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1663	HKG	Hong Kong (ISO 3166 trigram)
1664	HKS	HyperKinetic Syndrome
1665	hL	Hectolitre
1666	HL	Holding Line
1667	HLL	High-Level Language
1668	HLN	Headline News
1669	HLOS	High Level Output Specification
1670	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1671	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1672	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1673	HMF	HydroxyMethyl Furfural
1674	HMO	Health maintenance organization
1675	HMP	Her Majesty's Prison
1676	HMRC	Her/His Majesty's Revenue and Customs
1677	HMSO	Her Majesty's Stationery Office
1678	HMV	His Master's Voice
1679	HN	Honduras (ISO 3166 digram)
1680	HND	Honduras (ISO 3166 trigram)
1681	Ho	Holmium
1682	HO	Honduras (FIPS 10-4 country code)
1683	HOLLAND	Hope Our Love Lasts And Never Dies
1684	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1685	HOT	Highly Optimised Tolerance
1686	HOTAS	Hands on throttle-and-stick
1687	HOV	High Occupancy Vehicle
1688	hp	horse power
1689	HPA	UK Health Protection Agency
1690	HPCL	Hindustan Petroleum Corporation Limited
1691	HPLC	High Performance Liquid Chromatography
1692	HPT	High[er] Payoff Target
1693	HPV	Human Papilloma Virus
1694	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1695	HRD	Human Resource Development
1696	HRF	High iness Forces
1697	HRH	His (or Her) Royal Highness
1698	HRM	His (or Her) Royal Majesty
1699	HRM	Human Resource Management
1700	HRT	Hormone Replacement Therapy
1701	Hs	Hassium
1702	HSBC	The Hong Kong and Shanghai Banking Corporation
1703	HSC	Higher School Certificate
1704	HSM	High School Musical
1705	HSMAD	Human Science/Modeling and Analysis Data
1706	HSN	Home Shopping Network
1707	HSPH	Harvard School of Public Health
1708	HSSI	High-Speed Serial Interface
1709	HST	see entry
1710	HTA	HyperText Application
1711	HTFU	Harden The Fuck Up
1712	HTH	Hope That Helps
1713	HTI	Haiti (ISO 3166 trigram)
1714	HTML	HyperText Markup Language
1715	HTR	Heated Towel Rail
1716	HTS	High-Temperature Superconducting wire
1717	HTTP	HyperText Transfer Protocol
1718	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1719	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1720	HUN	Hungary (ISO 3166 trigram)
1721	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1722	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1723	HVAP	High Velocity Armour Piercing (ammunition)
1724	HVHF	High velocity human factors
1725	HVM	High Velocity Missile
1726	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1727	HWM	Hardware morphing (computer graphics rendering)
1728	HXB	The glycoprotein Tenascian C
1729	HZ	Haze (METAR Code)
1730	Hz	Hertz
1731	IA	Iowa (postal symbol)
1732	IAAL	I Am A Lawyer
1733	IAB	International Association for Biologicals
1734	IAD	Ion Assisted Deposition
1735	IADS	Integrated Air Defence System
1736	IAEA	International Atomic Energy Agency
1737	IAF	{i} Industrial Areas Foundation
1738	IAFG	Information Assurance Focus Group
1739	IANA	Internet Assigned Numbers Authority
1740	IANAL	I Am Not A Lawyer
1741	IAS	Image Assessment System
1742	IASIP	It's Always Sunny in Philadelphia
1743	IATA	International Air Transport Association
1744	IATF	International Automotive Task Force
1745	IATSE	International Alliance of Theatrical Stage Employees
1746	IAUC	International Astronomical Union Circular
1747	IAW	In Accordance With
1748	IB	International Baccalaureate
1749	IBA	Important Bird Area
1750	IBD	Inflammatory Bowel Disease
1751	IBDM	Information Based Decision Making
1752	IBM	International Business Machines
1753	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1754	IBS	Irritable Bowel Syndrome
1755	ICANN	Internet Corporation for Assigned Names and Numbers
1756	ICAO	International Civil Aviation Organization
1757	ICBM	Intercontinental Ballistic Missile
1758	ICBN	International Code of Botanical Nomenclature
1759	ICE	In case of emergency
1760	ICES	International Council for the Exploration of the Sea
1761	ICF	Intelligent Community Forum
1762	ICMP	Internet Control Message Protocol
1763	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1764	ICO	Intermediate Circular Orbit
1765	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1766	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1767	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1768	ICRL	Individual Component Repair List
1769	ICRS	International Celestial Reference System
1770	ICSI	Intracytoplasmic Sperm Injection
1771	ICT	Information and communication technologies
1772	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1773	ICV	Infantry Carrier Vehicle
1774	ICYMI	In Case You Missed It
1775	IDC	International Data Corporation
1776	IDDI	I don't do initialisms (see irony)
1777	IDGAF	I don't give a fuck
1778	IDK	I don't know
1779	IDL	Interface Definition Language
1780	IDN	Indonesia (ISO 3166 trigram)
1781	IEA	International Energy Agency
1782	IEC	International Electrotechnical Commission
1783	IED	Improvised Explosive Device
1784	IELTS	International English Language Testing System
1785	IER	Information Exchange Requirement
1786	IET	Initial Entry Training
1787	IET	Institution of Engineering and Technology
1788	IETF	Internet Engineering Task Force
1789	IEW	Intelligence and Electronic Warfare
1790	IFAB	International Football Association Board
1791	IFAH	International Federation for Animal Health
1792	IFAP	International Federation of Agricultural Producers
1793	IFO	Identified Flying Object (see also UFO)
1794	IFOV	Instantaneous Field of View
1795	IFPI	International Federation of Phonographic Industries
1796	IFRB	International Frequency Registration Board
1797	IFV	Infantry Fighting Vehicle
1798	IG	Inspector General
1799	IGNOU	Indira Gandhi National Open University
1800	IGS	International Ground Station
1801	IHH	Idiopathic Hypogonadotropic Hypogonadism
1802	IHO	International Hydrographic Organization
1803	IHR	Institute for Historical Review
1804	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1805	II	Two (in Roman numerals)
1806	IICA	Inter-American Institute for Cooperation on Agriculture
1807	IIE	Innovative Interstellar Explorer
1808	III	Three (in Roman numerals)
1809	IIRC	If I Recall/Remember Correctly
1810	IISS	International Institute for Strategic Studies
1811	IJN	Imperial Japanese Navy (World War II)
1812	IJWP	Interim Joint Warfare Publication
1813	ILDS	Improved Landmine Detection System
1814	ILO	International Labour Organization
1815	ILRI	International Livestock Research Institute
1816	ILY	I Love You [pronounced ILL-LEE]
1817	IMBD	International Migratory Bird Day
1818	IMDb	Internet Movie Database
1819	IME	In My Experience
1820	IMHO	In My Humble/Honest Opinion
1821	IML	International Mister Leather
1822	IMNSHO	In My Not So Humble Opinion
1823	IMPAC	International Merchant Purchase Authorization Card
1824	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1825	IMPATT	IMPact Avalanche Transit Time diode
1826	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1827	IMRL	Individual Material iness List
1828	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1829	IMsL	International Ms. Leather
1830	IMT	Integrated Management Tool
1831	IMU	International Mathematical Union
1832	In	Indium
1833	INA	Immigration and Nationality Act
1834	INAS	International Near-Earth Asteroid Survey
1835	INCITS	InterNational Committee for Information Technology Standards
1836	IND	India (ISO 3166 trigram)
1837	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1838	inet	the Internet
1839	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1840	INFOSEC	Information Security
1841	INLA	Irish National Liberation Army
1842	INMARSAT	International Maritime Satellite organization
1843	INRIA	Institut national de recherche en informatique et en automatique
1844	INS	Immigration and Naturalization Service
1845	InSAR	Interferometric synthetic aperture radar
1846	INST	Information Standards and Technology
1847	INTERFET	International Force for East Timor
1848	INTSUM	Intelligence Summary
1849	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1850	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1851	IPB	Intelligence Preparation of the Battlefield
1852	IPL	Inferior Parietal Lobule
1853	IPO	Initial Public Offering
1854	IPT	Integrated Product/Project Team
1855	IPTS	Institute for Prospective Technological Studies
1856	IPTV	Internet Protocol TeleVision
1857	IPW	Interrogation of Prisoners of War
1858	Ir	Iridium
1859	IRAD	Internal Research and Development
1860	IRAN	(I) Inspect and Repair As Necessary
1861	IRAS	Infrared Astronomical Satellite
1862	IRB	International Rugby Board
1863	IRBM	Intermediate Range Ballistic Missile
1864	IREA	Intermountain Rural Electric Association
1865	IRINN	Islamic Republic of Iran News Network
1866	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1867	IRN	Iran (ISO 3166 trigram)
1868	IRO	International Refugee Organisation
1869	IRQ	Iraq (ISO 3166 trigram)
1870	IRS	U.S. Internal Revenue Service
1871	IRST	Infra-red Search and Track
1872	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1873	ISAR	Inverse SAR (Synthetic Aperture Radar)
1874	ISB	Intermediate Staging Base
1875	ISBN	International Standard Book Number (ISO 2108)
1876	ISCCP	International Satellite Cloud Climatology Project
1877	ISCII	Indian Standard Code for Information Interchange
1878	ISDN	Integrated Services Digital Network
1879	ISEF	Intel International Science and Engineering Fair
1880	ISEN	Internet Search Environment Number
1881	ISF	Internal Security Force
1882	ISIL	Islamic State of Iraq and the Levant
1883	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1884	ISL	Iceland (ISO 3166 trigram)
1885	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1886	ISMB	International Society of Matrix Biologists
1887	ISMC	Intelligent Sounding Meaningless Conversation
1888	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1889	ISPE	International Society for Pharmacoepidemiology
1890	ISRO	Indian Space Research Organisation
1891	ISSCR	International Society for Stem Cell Research
1892	ISSN	International standard serial number (ISO 3297)
1893	ISTC	Institute of Scientific and Technical Communications (UK)
1894	ISTS	Intel Science Talent Search
1895	ITA	Italy (ISO 3166 trigram)
1896	ITAG	Inertial Terrain-Aided Guidance
1897	ITALY	I'll Truly Always Love You
1898	ITAS	Improved Target Acquisition Sight
1899	ITC	InferoTemporal Cortex (neurophysiology)
1900	ITCZ	Intertropical Convergence Zone
1901	ITEC	Information Technology Exposition & Conference
1902	ITEMS	Interactive Tactical Environment Management System
1903	ITER	International Thermonuclear Experimental Reactor
1904	ITF	International Tennis Federation
1905	ITK	In The Know
1906	ITN	Independent Television News (British)
1907	ITT	International Telephone and Telegraph (U.S.)
1908	ITTO	International Tropical Timber Organization
1909	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1910	Iveco	Industrial Vehicles Corporation
1911	IVF	In Vitro Fertilisation
1912	IVI	Interchangeable Virtual Instrument
1913	IVIS	Inter-Vehicle Information System
1914	IVL	Inter-Visibility Line
1915	IVM	In Vitro [Oocyte] Maturation
1916	IVO	In Vicinity Of
1917	IW	Information Warfare
1918	IWARS	Infantry Warrior Simulation
1919	IWC	International Whaling Commission
1920	IWW	Industrial Workers of the World
1921	IX	Nine (in Roman numerals)
1922	IXT	IntraText digital library; IntraText lexical hypertext
1923	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1924	IZ	Iraq (FIPS 10-4 country code)
1925	J	Joule
1926	J1	Joint [Manpower &] Personnel Directorate
1927	J2	Joint Intelligence Directorate
1928	J3	Joint Operations Directorate
1929	J4	Joint Logistics Directorate
1930	J5	Joint Strategic Plans & Policy Directorate
1931	J7	Joint Operational Plans & Interoperability Directorate
1932	JA	Japan (FIPS 10-4 country code)
1933	JAFT	Just A Field Test
1934	JAL	Japan Airlines
1935	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1936	JAM	Jamaica (ISO 3166 trigram)
1937	JAMA	Journal of the American Medical Association
1938	JANET	Joint Academic Network
1939	JATO	Jet-Assisted Take-Off
1940	JB	Jail Bait
1941	JB	Junior Branch
1942	JBFSA	Joint Blue Force Situational Awareness
1943	JCDB	Joint Common Data Base
1944	JCDS	Joint Chiefs of the Defence Staff
1945	JCIDS	Joint Capabilities Integration and Development System
1946	JCL	Job Control Language
1947	JCP	Java Community Process
1948	JCS	Joint Chiefs of Staff
1949	JCW	Juggalo Championship Wrestling
1950	JDBC	Java Data Base Connectivity
1951	JDEM	Joint Dark Energy Mission
1952	JDL	Jewish Defense League
1953	JE	Jersey (FIPS 10-4 territory code)
1954	JEFX	Joint Expeditionary Force eXperiment
1955	JET	Joint European Torus
1956	JEZ	Joint Engagement Zone
1957	JFACC	Joint Force Air Component Commander
1958	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1959	JFC	Joint Force Commander
1960	JFK	John Fitzgerald Kennedy or the airport named after him.
1961	JFLCC	Joint Force Land Component Commander
1962	JFMCC	Joint Force Maritime Component Commander
1963	JFO	Journal of Field Ornithology
1964	JFSOCC	Joint Force Special Operations Component Commander
1965	JFTX	Joint Field Training Exercise
1966	JH	Japan Highway Public Corporation
1967	JH	Jharkhand (Indian state code)
1968	JI	Joint Implementation
1969	JIB	Joint Information Bureau
1970	JIC	Joint Intelligence Centre
1971	JINI	Java Intelligent Network Infrastructure
1972	JITC	Joint Interoperability Test Command
1973	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1974	JJAP	Japanese Journal of Applied Physics
1975	JL	Japan Airlines (IATA airline designator)
1976	JLA	Justice League of America
1977	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1978	JMS	Java Message Service
1979	JN	Jan Mayen Island (FIPS 10-4 territory code)
1980	JNI	Java Native Interface
1981	JNLP	Java Network Launch Protocol
1982	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1983	JOA	Joint Operations Area
1984	JOPES	Joint Operations Planning and Execution System
1985	JOR	Jordan (ISO 3166 trigram)
1986	JOTS	Joint Operations Tactical System
1987	JPL	Jet Propulsion Laboratory
1988	JPN	Japan (ISO 3166 trigram)
1989	JPOW	Joint Project Optic Windmill
1990	JRDF	Joint Rapid Deployment Forces
1991	JRE	Java Runtime Environment
1992	JREF	James Randi Educational Foundation
1993	JROC	Joint Requirements Oversight Council
1994	JROCM	JROC Memorandum
1995	JRRF	Joint Rapid Reaction Force
1996	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1997	JSAP	Japan Society of Applied Physics
1998	JSCSC	Joint Services Command and Staff College
1999	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
2000	JSF	Joint Strike Fighter
2001	JSIMS	Joint Simulation System
2002	JSOA	Joint Special Operations Area
2003	JSOTF	Joint Special Operations Task Force
2004	JSP	JavaServer Page
2005	JSP	Joint Services Publication
2006	JSR	Java Specification Request
2007	JSS	Joint Support Ship Project
2008	JTC	Joint Training Confederation
2009	JTF	Joint Task Force
2010	JTFEX	Joint Task Force Exercise
2011	JTLS	Joint Theater Level Simulation
2012	JTMD	Joint Theatre Missile Defence
2013	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
2014	JU	Juan de Nova Island (FIPS 10-4 territory code)
2015	JUGFET	JUnction Gate Field-Effect Transistor
2016	JUICE	JUpiter ICy Moon Explorer
2017	JUO	Joint Urban Operations
2018	JV	Joint Venture,Junior Varsity
2019	JW	Jehovah's Witnesses
2020	JWARS	Joint Warfare System (simulation)
2021	JWP	Joint Warfare Publication
2022	JY	Japanese Yen
2023	JZ	Joint Zone
2024	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
2025	k	Kilo-
2026	K	picokelvin
2027	K9	Canine Police Unit
2028	Ka	Kamov Design Bureau
2029	kA	Kiloampere
2030	KA	Knowledge Acquisition,Karnataka (Indian state code)
2031	KAF	Kandahar Air Field
2032	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2033	KARNAC	Knowledge Aided Retrieval in Activity Context
2034	KARR	Knight Automated Roving Robot (Knight Rider character)
2035	KATUSA	Korean Augmentation To United States Army
2036	KAZ	Kazakhstan (ISO 3166 trigram)
2037	KBE	Knight Commander of the Order of the British Empire
2038	KBO	Kuiper Belt Object
2039	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2040	kC	Kilocoulomb
2041	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2042	KCL	King's College London
2043	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2044	KCS	Kansas City Southern Railway (AAR reporting mark)
2045	KD	Kawasaki Disease,Kraft Dinner
2046	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2047	KEDO	Korean Peninsula Energy Development Organization
2048	KEN	Kenya (ISO 3166 trigram)
2049	KERA	Kentucky Education Reform Act (of 1990)
2050	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2051	KESR	Kent and East Sussex Railway.
2052	KET	Kentucky Educational Television,Key English Test
2053	kF	Kilofarad
2054	KFC	Kentucky Fried Chicken
2055	KFOR	UN Kosovo Force
2056	KFUPM	King Fahd University of Petroleum & Minerals
2057	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2058	KGO	Knight of the Guelphic Order of Hanover
2059	KGZ	Kyrgyzstan (ISO 3166 trigram)
2060	KH	Cambodia (ISO 3166 digram)
2061	kH	Kilohenry
2062	KHL	Kontinental Hockey League
2063	KHM	Cambodia (ISO 3166 trigram)
2064	KHz	Kilohertz
2065	Ki	Kibi
2066	KI	Kiribati (ISO 3166 digram)
2067	KIA	Killed In Action
2068	KIDS	Knowledge-based Integrated Design System
2069	KIR	Kiribati (ISO 3166 trigram)
2070	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2071	KIT	Keep In Touch
2072	KITECH	Korean Institute of Industrial Technology
2073	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2074	kJ	Kilojoule
2075	kK	Kilokelvin
2076	KKK	Ku Klux Klan
2077	kL	Kilolitre
2078	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2079	KLOC	Kilo Lines Of Code
2080	KM	Comoros,Knowledge Management
2081	kN	Kilonewton
2082	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2083	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2084	KO	Knocked Out
2085	KOR	Republic of Korea (ISO 3166 trigram)
2086	KP	Kim Possible
2087	KPMG	Klynveld,Peat,Marwick,Goerdeler
2088	KPNO	Kitt Peak National Observatory
2089	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2090	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2091	Kr	Krypton
2092	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2093	kS	Kilosiemens
2094	KSC	Kennedy Space Center
2095	KSI	Killed or Seriously Injured
2096	KSU	Kansas State University
2097	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2098	kT	Kilotesla
2099	KTS	Knight of the Tower and Sword (of Portugal)
2100	KU	Kuwait (FIPS 10-4 country code)
2101	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2102	kV	Kilovolt
2103	KV	Kosovo
2104	kW	Kilowatt
2105	KW	Kuwait (ISO 3166 digram)
2106	KWB	Kids' WB!
2107	KWT	Kuwait (ISO 3166 trigram)
2108	KX	Cayman Airways (IATA airline designator)
2109	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2110	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2111	KZN	KwaZulu-Natal
2112	La	Lanthanum
2113	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2114	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2115	LAB	Logistics Assault Base
2116	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2117	LACMA	Los Angeles County Museum of Art
2118	LAD	Laser Aiming Device
2119	LADW	Local Air Defence Warning
2120	LAESI	Local Authority & Emergency Service Information
2121	LAN	Local Area Network
2122	LANL	Los Alamos National Laboratory
2123	LAO	Laos (ISO 3166 trigram)
2124	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2125	LARC	Livermore Advanced Research Computer (cf. LLNL)
2126	LARP	Live-Action Role-Playing
2127	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2128	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2129	LATA	Local Access Transport Area
2130	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2131	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2132	LAW	Light Antitank Weapon
2133	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2134	LB	Lebanon (ISO 3166 digram)
2135	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2136	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2137	LBN	Lebanon (ISO 3166 trigram)
2138	LBNL	Lawrence Berkeley National Laboratory
2139	LBR	Liberia (ISO 3166 trigram)
2140	LBS	Location-Based Services
2141	LBT	Large Binocular Telescope
2142	LBW	Leg Before Wicket
2143	LBY	Libya (ISO 3166 trigram)
2144	LCA	Saint Lucia (ISO 3166 trigram)
2145	LCC	Land Component Commander
2146	LCCP	Light Contingency Communications Package
2147	LCD	Liquid Crystal Display
2148	LCM	Least/Lowest Common Multiple
2149	LCS	League of Legends Championship Series
2150	LDA	Lateral Drift Apparatus (paratroops)
2151	LDC	Lesser Developing/Developed Country
2152	LDL	Low-Density Lipoprotein
2153	LDV	Local Defence Volunteers (British Home Guard)
2154	LDW	Lane Departure Warning (ADAS)
2155	LE	Lebanon (FIPS 10-4 country code)
2156	LEC	Local Exchange Carrier
2157	LED	Light-Emitting Diode
2158	LEGAD	Legal Advice
2159	Legs	level emotion gad speed
2160	LEMOSS	Long-Endurance MObile Submarine Simulator
2161	LEN	Large Extension Node
2162	LEP	Large Electron-Positron collider
2163	LER	Loss-Exchange Ratio
2164	LEU	Low-Enriched Uranium
2165	LF	Low Frequency
2166	LFO	Low Frequency Oscillation / Oscillator
2167	LFTR	Liquid fluoride thorium reactor
2168	LG	Latvia (FIPS 10-4 country code)
2169	LGM	Little Green Men
2170	LGS	Landsat Ground Station
2171	LHC	Large Hadron Collider
2172	LHS	Left Hand Side
2173	Li	Lithium
2174	LIBOR	London Interbank Offered Rate
2175	LIBS	Laser Induced Breakdown Spectroscopy
2176	LIE	Liechtenstein (ISO 3166 trigram)
2177	LIGO	Laser Interferometer Gravitational-Wave Observatory
2178	LINEAR	Lincoln Near-Earth Asteroid Research
2179	LISA	Laser Interferometer Space Antenna
2180	LIVE	Liquid Inertial Vibration Eliminator
2181	LJJ	Lord Justices of Appeal
2182	LK	Sri Lanka (ISO 3166 digram)
2183	LKA	Sri Lanka (ISO 3166 trigram)
2184	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2185	LLAD	Low Level Air Defence
2186	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2187	LLC	Limited Liability Company
2188	LLLTV	Low-Light Level Television
2189	LLNL	Lawrence Livermore National Laboratory
2190	LLP	Limited Liability Partnership
2191	LLTR	Low-Level Transit Route
2192	LMAO	Laughing My Ass Off (Internet shorthand)
2193	LMB	Lick My Balls
2194	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2195	LMN	Lifetime Movie Network
2196	LMS	Like My Status (Internet shorthand)
2197	LMV	() Light Motor Vehicle
2198	LNER	London and North Eastern Railway
2199	LNG	Liquefied Natural Gas
2200	LNO	Liaison Officer
2201	LO	Slovakia (FIPS 10-4 country code)
2202	LOA	Limit Of Advance
2203	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2204	LoD	Lines of Development (UK)
2205	LOFAR	Low Frequency Analysis and Recording
2206	LOGPAC	Logistics Package
2207	LOL	Laughing Out Loud (Internet shorthand)
2208	LOMEZ	Low Altitude Missile Engagement Zone
2209	LONEOS	Lowell Observatory Near-Earth-Object Search
2210	LORTID	LOng Range Target IDentification
2211	LOS	Line Of Sight
2212	LOSAT	Line-Of-Sight Anti-Tank (missile)
2213	LOTA	Licentiate of the Orthodontic Technicians Association
2214	LOTIS	Livermore Optical Transient Imaging System
2215	LOTS	Logistics Over-The-Shore
2216	LPC	Linear Predictive Coding
2217	LPG	Liquefied Petroleum Gas (cf. LNG)
2218	LPI	Low Probability of Intercept
2219	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2220	Lr	Lawrencium
2221	LR	Liberia (ISO 3166 digram)
2222	LRC	Logistics iness Center
2223	LRGW	Long-Range Guided Weapon
2224	LRICBM	Limited Range ICBM
2225	LRIP	Low Rate Initial Production
2226	LRP	Logistics Release Point
2227	LRPE	Long-Range Planning Element
2228	LRS	Long Range Surveillance
2229	LRU	Line-Replaceable Unit
2230	LSI	Large-Scale Integration
2231	LSIF	Labour Sponsored Investment Fund
2232	LSND	Liquid Scintillator Neutrino Detector
2233	LSO	Lesotho (ISO 3166 trigram)
2234	LSST	Large Synoptic Survey Telescope
2235	Lt	Lieutenant
2236	LtC	Lieutenant-Colonel (U.S.)
2237	LTC	Long-Term Costing
2238	Ltd	Limited
2239	LTDP	Long-Term Defence Plan
2240	LTI	Linear Time-Invariant
2241	LTM	Acronym for Laughing To Myself
2242	LTP	Long-Term Potentiation
2243	LTU	Lithuania (ISO 3166 trigram)
2244	LU	Acronym Love You
2245	LU	Loonatics Unleashed
2246	Lu	Lutetium
2247	LUCA	Last Universal Common Ancestor
2248	LUG	Linux User Group
2249	LULU	Locally Unwanted Land Use (urbanism)
2250	LUX	Luxembourg (ISO 3166 trigram)
2251	LVA	Latvia (ISO 3166 trigram)
2252	LVEF	Left Ventricular Ejection Fraction
2253	Lw	Lawrencium (obsolete 1963)
2254	LWR	Laser warning receiver
2255	LWRC	Land Warfare Resources Corporation
2256	LWS	Land Warrior System
2257	LX	Electrics (theatrical term)
2258	LYAO	Laugh Your Ass Off
2259	LYLAS	Love You Like A Sister
2260	Ma	Megaannum
2261	mA	Milliampere
2262	MAA	Mathematical Association of America
2263	MAAC	Metro Atlantic Athletic Conference
2264	MACE	Multi-Agent Computing Environment
2265	MACHO	MAssive Compact Halo Object
2266	MAF	Maintenance Action Form
2267	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2268	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2269	MAGTF	Marine Air-Ground Task Force
2270	MALD	Miniature Air-Launched Decoy
2271	MANPADS	MAN-Portable Air Defence System
2272	MANPRINT	MANpower and PeRsonnel INTegration
2273	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2274	MAOI	Monoamine oxidase inhibitor
2275	MAPS	Monitoring Avian Productivity and Survivorship
2276	MAR	Morocco (ISO 3166 trigram)
2277	MarBEF	Marine Biodiversity and Ecosystem Functioning
2278	MARCENT	United States Marine Forces Central Command
2279	MARFORCC	Marine Force Component Commander
2280	MASAS	Monte Agliale Supernovae and Asteroid Survey
2281	Maser	Microwave Amplification by Stimulated Emission of Radiation
2282	MASH	Mobile Army Surgical Hospital
2283	MASINT	Measurement And Signature Intelligence
2284	MAVS	Mobile Artillery Vehicle System
2285	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2286	MBCC	Migratory Bird Conservation Commission (U.S.)
2287	MBCS	Multi-Byte Character Set
2288	MBI	Moody Bible Institute
2289	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2290	MBM	Meat and Bone Meal
2291	MBT	Main Battle Tank
2292	MBTI	Myers-Briggs Type Indicator
2293	mC	Millicoulomb
2294	MCDL	Model Composition Definition Language
2295	MCFT	Modified Compression Field Theory
2296	MCG	Melbourne Cricket Ground
2297	MCIS	Mellon Collie and the Infinite Sadness
2298	MCM	Mine Counter-Measures
2299	MCMV	Mine Counter-Measure Vessel
2300	MCR	My Chemical Romance
2301	MCSF	Marine Corps Security Forces
2302	MCT	Movement Control Team
2303	MCTIS	Mounted Co-operative Target Identification System
2304	Md	Mendelevium
2305	MDNA	Madonna's 12th studio album title (2012)
2306	MDO	Membership Driven Organisation
2307	MDP	Markov Decision Process
2308	MDT	Mountain Daylight Time (UTC-6 hours)
2309	MDV	Maldives (ISO 3166 trigram)
2310	Me	Messerschmitt
2311	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2312	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)
2313	MEDEVAC	Medical evacuation
2314	MEDS	Mission Essential Data Set
2315	MEG	MagnetoEncephaloGraphy
2316	MELT	Metallic Line/Loop Test (ing)
2317	MEMS	Microelectromechanical System
2318	MER	Mars Exploration Rover
2319	MERL	Mitsubishi Electric Research Laboratories
2320	MES	Manufacturing Execution Systems
2321	METAR	[Meteorological] Aviation Routine weather report
2322	METOC	Meteorological and Oceanographic
2323	MeV	Megaelectronvolt
2324	MEX	Mexico (ISO 3166 trigram)
2325	MEZ	Missile Engagement Zone
2326	mF	Millifarad
2327	MGPAM	My Gym Partner's a Monkey
2328	MGS	Mobile Gun System
2329	mH	Millihenry
2330	MHC	Major Histocompatibility Complex
2331	MHHW	Mean Higher High Water (nautical charts)
2332	MHL	Marshall Islands (ISO 3166 trigram)
2333	MHLW	Mean Higher Low Water (nautical charts)
2334	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2335	MHW	Mean High Water (nautical charts)
2336	MHWN	Mean High Water Neaps (nautical charts)
2337	MHWS	Mean High Water Springs (nautical charts)
2338	MHz	Megahertz
2339	Mi	Mebi
2340	MIA	Missing In Action
2341	MICLIC	Mine Clearing Line Charge
2342	MICOM	Missile Command
2343	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2344	MIDAS	Man-machine Integration Design and Analysis System
2345	MIDI	Musical Instrument Digital Interface
2346	MIDS	Multi-Function Information Distribution System
2347	MIFG	Shallow Fog (METAR Code)
2348	MIKE	Monitoring of Illegal Killing of Elephants
2349	MIL	Man-In-the-Loop
2350	MILC	Mirrorless interchangeable-lens camera
2351	MILF	Mother I'd Like to Fuck
2352	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2353	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2354	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2355	MIRV	Multiple Independent Reentry Vehicle
2356	MISREP	Mission Report
2357	MISSI	Multilevel Information System Security Initiative
2358	MITL	Man-In-The-Loop
2359	MITS	see entry
2360	mJ	Millijoule
2361	MJD	Modified Julian Day
2362	mK	Millikelvin
2363	MKG	Michael Kidd-Gilchrist (American basketball player)
2364	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2365	mL	Millilitre
2366	MLB	Major League Baseball
2367	MLC	Member of the Legislative Council (in India)
2368	MLE	Maximum likelihood estimation
2369	MLHW	Mean Lower High Water (nautical charts)
2370	MLI	Mali (ISO 3166 trigram)
2371	MLL	Major League Lacrosse
2372	MLLW	Mean Lower Low Water (nautical charts)
2373	MLP	My Little Pony
2374	MLRS	Multiple-Launch Rocket System
2375	MLT	Malta (ISO 3166 trigram)
2376	MLW	Mean Low Water (nautical charts)
2377	MLWN	Mean Low Water Neaps (nautical charts)
2378	MLWS	Mean Low Water Springs (nautical charts)
2379	Mm	Megametre
2380	mm	Millimetre
2381	MMEV	Multi-Mission Effects Vehicle
2382	MMI	Magical MonkeyZ Inc.
2383	MMI	Man-Machine Interface
2384	MMI	McLean Meditation Institute
2385	MMIC	McLean Meditation Institute Certified
2386	MMO	Massively Multiplayer Online (computer game)
2387	MMOR	Master of Management in Operations Research
2388	MMORPG	Massively multiplayer online role-playing game
2389	MMPR	Mighty Morphin Power Rangers
2390	MMS	Multimission Modular Spacecraft
2391	Mn	Manganese
2392	mN	Millinewton
2393	MNB	Multinational Brigade
2394	MNE	Montenegro (ISO 3166 trigram)
2395	MNMF	Multi-National Maritime Force
2396	MNP	Northern Mariana Islands (ISO 3166 trigram)
2397	MNS	Mission Needs Statement
2398	Mo	Molybdenum
2399	MOA	Museum of Art (Brigham Young University)
2400	MOCAS	Mechanization Of Contract Administration Services
2401	MoD	Ministry of Defence (United Kingdom) and various other countries
2402	modem	Modulator-Demodulator
2403	Moe	Marvel of entertainment
2404	MOE	Measure Of Effectiveness
2405	MOF	Ministry of Finance (Japan)
2406	MOFA	Ministry of Foreign Affairs (Japan)
2407	MOID	Minimum Orbital Intersection Distance
2408	MOJWA	Movement for Oneness and Jihad in West Africa
2409	MOLO	Mobile Other Licensed Operator (UK)
2410	MOM	Master's Degree in Oriental medicine
2411	MOM	Message Oriented Middleware
2412	MoM	Multiple of the median
2413	MoMA	Museum of Modern Art (NYC)
2414	MOND	Modified Newtonian Dynamics
2415	MOO	Measure Of Outcome
2416	MOPP	Mission-Oriented Protective Posture
2417	MORP	Meteorite Observation and Recovery Project
2418	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2419	MOT	Ministry of Transport (UK)
2420	MOTA	Member of the Orthodontic Technicians Association
2421	MOTESS	Moving Object and Transient Event Search System
2422	MOU	Memorandum Of Understanding
2423	MOW	Maintenance of way (also MW)
2424	MOZ	Mozambique (ISO 3166 trigram)
2425	MPa	Megapascal
2426	mPa	Millipascal
2427	MPAA	Motion Picture Association of America
2428	MPEC	Minor Planet Electronic Circular
2429	MPEG	Motion Pictures (Coding) Experts Group
2430	MPEV	Multi-Purpose Engineering Vehicle
2431	MPF	Maritime Prepositioning Force
2432	MPFC	Medial PreFrontal Cortex
2433	MPG	Miles Per Gallon
2434	MPMC	Medial PreMotor Cortex
2435	MPSI	Member of the Pharmaceutical Society of Ireland
2436	MPSoC	MultiProcessor System-on-Chip
2437	MPSRON	Maritime Propositioning Ship Squadron
2438	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2439	MRAV	Multi-Role Armoured Vehicle
2440	MRBM	Medium Range Ballistic Missile
2441	MRC	Maintenance Requirements Card
2442	MRD	Motorized Rifle Division
2443	MRGW	Medium-Range Guided Weapon
2444	MRI	Magnetic Resonance Imaging
2445	MRL	Multiple Rocket Launcher
2446	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2447	MRS	Magnetic Resonance Spectroscopy
2448	MRSA	Methicillin-resistant Staphylococcus aureus
2449	MRTFB	U.S. Major Range and Test Facility Base
2450	Ms	Megasecond
2451	mS	Millisiemens
2452	MSD	Minimum Safe Distance
2453	MSDB	Multi Source Data Base
2454	MSE	Multiple Subscriber Element
2455	MSG	Message
2456	MSLP	Mean Sea Level Pressure
2457	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2458	MSO	Multiple System Operator
2459	MSPB	Merit Systems Protection Board
2460	MSSA	Methicillin-susceptible Staphylococcus aureus
2461	Mt	Meitnerium
2462	mT	Millitesla
2463	MTBF	Mean time between failures
2464	MtF	Male-to-female transsexual
2465	MTG	Magic: The Gathering
2466	MTQ	Martinique (ISO 3166 trigram)
2467	MTT	Methylthiazol tetrazolium (assay)
2468	MTWS	MAGTF Tactical Warfare System
2469	MUS	Mauritius (ISO 3166 trigram)
2470	mV	Millivolt
2471	MVC	Missouri Valley Conference
2472	MVFC	Missouri Valley Football Conference
2473	MVNO	Mobile virtual network operator
2474	mW	Milliwatt
2475	MWESH	Machismo Wizards Extended SHelter (operating system)
2476	MWI	Malawi (ISO 3166 trigram)
2477	MWOA	Mount Wilson Observatory Association
2478	MWTB	Mounted Warfare Test Bed
2479	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2480	MYOB	Mind Your Own Business
2481	MYS	Malaysia (ISO 3166 trigram)
2482	MYT	Mayotte (ISO 3166 trigram)
2483	n	Nano
2484	N3F	National Fantasy Fan Federation
2485	nA	Nanoampere
2486	Na	Sodium (Latin Natrium)
2487	NAA	N-Acetylaspartate
2488	NAAD	North American Air Defense
2489	NAAQS	National Ambient Air Quality Standards
2490	NAAWS	NATO Anti-Air Warfare System
2491	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2492	NACC	North Atlantic Cooperation Council
2493	NACISA	NATO Communications and Information Systems Agency
2494	NACMA	NATO Air Command and Control System Management Agency
2495	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2496	NAEC	U.S. Naval Air Engineering Center
2497	NAFERA	Native American Free Exercise of Religion Act
2498	NAFLD	NonAlcoholic Fatty Liver Disease
2499	NAFO	Northwest Atlantic Fisheries Organization
2500	NAFTA	North American Free Trade Agreement
2501	NAGPRA	Native American Graves Protection and Repatriation Act
2502	NAICS	North American Industry Classification System
2503	NAIL	Neurotics Anonymous
2504	NAILS	National Airspace Integrated Logistics System
2505	NAIRU	Non Accelerating Inflation Rate of Unemployment
2506	NAK	Negative Acknowledge
2507	NAM	Namibia (ISO 3166 trigram)
2508	NAMBLA	North American Man-Boy Love Association
2509	NAMRL	Naval Aerospace Medical Research Laboratory
2510	NaN	Not A Number (computing)
2511	NAO	UK National Audit Office
2512	NAPS	Navy Acquisition Procedures Supplement
2513	NARA	(U.S.) National Archives and Records Administration
2514	NARAL	National Abortion Rights Action League
2515	NARDAC	Naval Regional Data Automation Center
2516	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2517	NARPV	National Association for Remotely Piloted Vehicles
2518	NASCAR	National Association for Stock Car Auto Racing
2519	NASDAQ	National Association of Securities Dealers Automated Quotations
2520	NASED	National Association of State Election Directors [1][2]
2521	NASH	Non-Alcoholic Steatohepatitis
2522	NASP	National Aerospace Plane
2523	NASS	National Association of Secretaries of State [3]
2524	NatGeo	National Geographic
2525	NaUKMA	National University of Kyiv-Mohyla Academy
2526	NAV	Navigation[al]
2527	NAVCAMS	Naval Communications Area Master Station
2528	NAVCC	National Audio-Visual Conservation Center
2529	NAVCENT	Naval Forces U.S. Central Command
2530	NAVDAC	Naval Data Automation Command
2531	NAVEUR	Naval Forces U.S. European Command
2532	NAVFOR	Naval Force
2533	NAVMACS	Naval Modular Automatic Communication Subsystem
2534	NAVNET	Navy Network
2535	NAVS	Non-Cooperative Airborne Vector Scoring
2536	NAVSAT	Navigation Satellite
2537	NAVSPACECOM	U.S. Navy Space Command
2538	NAVSPASUR	U.S. Naval Space Surveillance System
2539	NAVSTAR	Navigation Satellite Timing And Ranging
2540	NAVTACNET	Navy Tactical Network
2541	NAWC	U.S. Naval Air Warfare Center
2542	Nb	Niobium
2543	NBA	National Basketball Association
2544	NBL	National Basketball League (Australia)
2545	NBT	Nitroblue tetrazolium (assay)
2546	nC	Nanocoulomb
2547	NCA	National Command Authority
2548	NCAR	U.S. National Center for Atmospheric Research
2549	NCB	National Codification Bureau
2550	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2551	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2552	NCDDR	U.S. National Center for the Dissemination of Disability Research
2553	NCI	U.S. National Cancer Institute
2554	NCL	New Caledonia (ISO 3166 trigram)
2555	NCLR	National Council of La Raza
2556	NCMO	No Commitment Make Out
2557	NCO	Non-Commissioned Officer
2558	NCP	Net Contracted Purchases
2559	NCR	National Cash Register Co.
2560	NCTR	Non-Co-operative Target Recognition
2561	NCW	Network Centric Warfare
2562	Nd	Neodymium
2563	NDAA	U.S. National Defense Authorization Act
2564	NDBP	Non-Departmental Public Body (Scotland)
2565	NDP	New Democratic Party (Canada)
2566	NDS	Nintendo DS
2567	Ne	Neon
2568	NECTEC	National Electronics and Computer Technology Center (Thailand)
2569	NEMS	National Energy Modeling System (USDOE-EIA)
2570	NEPA	National Environmental Policy Act
2571	NER	Niger (ISO 3166 trigram)
2572	NERICA	New Rice for Africa
2573	NESP	NSA/CSS Enterprise Standards Program
2574	NET	National Educational Television
2575	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2576	NETL	(US) National Energy Technology Laboratory
2577	NETWARS	Network Warfare Simulation
2578	NEX	Navy EXchange
2579	nF	Nanofarad
2580	NF	Norfolk Island (ISO 3166 digram)
2581	NFER	National Foundation for Educational Research
2582	NFG	No Fucking Good
2583	NFHS	National Federation of State High School Associations
2584	NFI	Not F****** Interested
2585	NFK	Norfolk Island (ISO 3166 trigram)
2586	Nfld	Newfoundland
2587	NFPA	National Fluid Power Association (United States)
2588	NFT	No Further Text
2589	NGATS	New Generation Army Targetry System
2590	NGH	Northern General Hospital
2591	NGO	non-governmental organization
2592	NGS	Naval Gunfire Support
2593	nH	Nanohenry
2594	NHANES	National Health and Nutrition Examination Survey
2595	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2596	NHB	No Holds Barred radio (Link)
2597	NHL	National Hockey League
2598	NHRA	National Hot Rod Association
2599	NHS	National Health Service (UK)
2600	Ni	Nickel
2601	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2602	NIAG	NATO Industrial Advisory Group
2603	NIAID	National Institute of Allergies and Infectious Disease
2604	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2605	NIB	New In Box (Internet auction/trading listings)
2606	NIBP	Non-invasive blood pressure monitor
2607	NicA	Nicotine Anonymous
2608	NICAP	National Investigations Committee on Aerial Phenomena
2609	NICE	UK. National Institute for Health and Clinical Excellence
2610	NICHD	National Institute of Child Health and Human Development [4]
2611	NICP	National Inventory Control Point
2612	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2613	NIDRR	National Institute on Disability Research and Rehabilitation
2614	NIEHS	National Institute of Environmental Health Sciences
2615	NIIN	National Item Identification Number
2616	NIMA	National Imagery and Mapping Agency (became NGA)
2617	NIMBY	Not In My Back Yard (See NOME)
2618	NIMG	Not In My Generation
2619	NIN	Nine Inch Nails (band)
2620	NIPR	National Institute of Polar Research (Japan)
2621	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2622	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2623	NISCAP	NSA Information System Certification and Accreditation Program
2624	NISER	National Institute of Science Education and Research
2625	NIST	National Institute of Standards and Technology
2626	NITFS	National Imagery Transmission Format Standard
2627	NIU	Niue (ISO 3166 trigram)
2628	nJ	Nanojoule
2629	NJ	New Jersey (postal symbol)
2630	NJHS	National Junior Honor Society
2631	NJPW	New Japan Pro Wrestling
2632	nK	Nanokelvin
2633	NKA	No Known Allergies
2634	nL	Nanolitre
2635	NLB	Non-Linear Battlefield
2636	NLD	Netherlands (ISO 3166 trigram)
2637	NLF	National Liberation Front (disambiguation)
2638	NLL	National Lacrosse League
2639	NLW	Non-Lethal Weapon
2640	nm	Nanometre
2641	NM	New Mexico (postal symbol)
2642	NMCI	Navy Marine Corps Intranet
2643	NMCS	Not Mission Capable Supply (SM&R code)
2644	NMD	U.S. National Missile Defense
2645	NMN	No middle name
2646	NMR	Nuclear Magnetic Resonance
2647	NMSG	NATO Modelling and Simulation Group
2648	nN	Nanonewton
2649	NNE	North North-East
2650	NNSA	U.S. National Nuclear Security Administration
2651	NNW	North North-West
2652	No	Nobelium
2653	NOAA	U.S. National Oceanic and Atmospheric Administration
2654	NOAF	Norwegian Air Force
2655	NOAO	National Optical Astronomy Observatory
2656	NOC	UK. National Oceanography Centre
2657	NODEF	NATO Oceanographic Data Exchange Format
2658	NOGI	New Orleans Grande Isle (award for diving)
2659	NOLF	Navy OutLying Field
2660	NOME	Not on Mars Either
2661	NOME	Not on Mars Either (see NIMBY)
2662	NOR	Norway (ISO 3166 trigram)
2663	NORELPREF	No religious preference
2664	NORTHAG	Northern Army Group
2665	NOSA	NATO OSI Security Architecture
2666	NOTAFLOF	No One Turned Away For Lack Of Funds
2667	NOW	National Organization for Women
2668	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2669	NPB	Nippon Professional Baseball
2670	NPCS	Non-Passenger Coaching stock (in Railways)
2671	NPD	Nationaldemokratische Partei Deutschlands (German)
2672	NPDI	New Product Development and Introduction
2673	NPG	Needline/Network Participation Group
2674	NPH	Normal Pressure Hydrocephalus
2675	NPO	nothing by mouth
2676	NPOV	Neutral Point Of View
2677	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2678	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2679	NRA	National Rifle Association
2680	NRAO	National Radio Astronomy Observatory
2681	NRDC	(U.S.) Natural Resources Defense Council
2682	NREL	U.S. National Renewable Energy Laboratory
2683	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2684	NRMP	National Resident Matching Program (U.S. medicine)
2685	NRO	U.S. National Reconnaissance Office
2686	NRT	Near Real Time
2687	NRU	Nauru (ISO 3166 trigram)
2688	ns	Nanosecond
2689	nS	Nanosiemens
2690	NSABB	National Science Advisory Board for Biosecurity
2691	NSAID	Non-Steroidal Anti-Inflammatory Drug
2692	NSB	Norges Statsbaner (Norwegian State Railways)
2693	NSC	National Security Council
2694	NSDL	National Science Digital Library (US)
2695	NSG	National System for Geospatial-Intelligence
2696	NSN	National Stock Number
2697	NSNA	National Student Nurses' Association
2698	NSO	National Standardization Office (ABCA)
2699	NSS	(U.S.) Naval Simulation System
2700	NST	(UK) Nimrod Software Team
2701	NSTAC	National Security Telecommunications Advisory Committee
2702	NSW	New South Wales (postal symbol)
2703	nT	Nanotesla
2704	NTDS	Naval Tactical Data System
2705	NTP	Network Time Protocol
2706	NTR	Network Time Reference
2707	NTRA	National Thoroughbred Racing Association
2708	NTSB	National Transportation Safety Board
2709	NTV	Non-Tactical Vehicle
2710	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2711	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2712	NUTS	Nuclear Utilization Target Selection
2713	NUWC	U.S. Naval Undersea Warfare Center
2714	nV	Nanovolt
2715	NVEOL	Night Vision and Electro-Optics Laboratory
2716	NVG	Night Vision Goggles
2717	NVL	Night Vision Laboratory
2718	nW	Nanowatt
2719	NW	North-West
2720	NW	Nuclear Weapon
2721	NWA	National Wrestling Alliance
2722	NWF	National Wildlife Federation
2723	NWFZ	Nuclear-Weapon-Free Zone
2724	NWHN	U.S. National Women's Health Network
2725	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2726	NWOAHM	New Wave of American Heavy Metal
2727	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2728	NWRA	National Wildlife Rehabilitators Association
2729	NWSL	National Women's Soccer League (U.S.)
2730	NWT	North-West Territories
2731	NXA	21st arcade game in the Pump It Up series
2732	NXD	Native XML
2733	NXE	New Xbox Experience
2734	NXG	New Cross Gate station
2735	NXL	National XBall League
2736	NXN	Nike Cross Nationals
2737	NY	New York (postal symbol)
2738	NYC	New York City
2739	NYHA	New York Heart Association
2740	NYO	National Youth Orchestra of Great Britain
2741	NYSE	New York Stock Exchange
2742	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2743	NZC	New Zealand Cricket
2744	NZL	New Zealand (ISO 3166 trigram)
2745	NzL	Noze looan (online/event listings)
2746	NZOSS	New Zealand Open Source Society
2747	NZRU	New Zealand Rugby Union
2748	OAC	On Approved Credit
2749	OAP	Old Age Pensioner (UK)
2750	OARSI	Osteoarthritis Research Society International
2751	OAS	Organization of American States
2752	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2753	OASIS	Ontario Association of Sewage Industry Services
2754	OASP	Operational Analysis Support Paper/Plan
2755	OAU	Organization for African Unity
2756	OBE	Officer of the Order of the British Empire
2757	OBX	Outer Banks (North Carolina)
2758	OC	Officer Commanding
2759	OCD	Obsessive-Compulsive Disorder
2760	OCFS	Oracle Cluster File System
2761	OCFS2	Oracle Cluster File System Release 2
2762	OCMCC	[2] Orchard County MCC
2763	OCN	Oncology Certified Nurse
2764	OCO	Oort Cloud Object
2765	OCR	Optical Character Recognition
2766	OCS	see entry
2767	ODAS	OCA-DLR Asteroid Survey
2768	ODBC	Open DataBase Connectivity
2769	OEA	(U.S.) Office of Economic Adjustment
2770	OECD	Organisation for Economic Co-operation and Development (international)
2771	OED	Oxford English Dictionary
2772	OEG	Operation Exposure Guidance
2773	OEIS	On-Line Encyclopedia of Integer Sequences
2774	OEM	Original Equipment Manufacturer
2775	OFA	Occipital Face Area
2776	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2777	OGC	Open Geospatial Consortium
2778	OGD	Other Government Department
2779	OGO	Other Government Organization
2780	OH	Ohio (postal symbol)
2781	OHC	OverHead-Cam engine
2782	OHHLA	Original Hip-Hop Lyrics Archive
2783	OHIP	Ontario Health Insurance Plan
2784	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2785	OHP	Observatoire de Haute-Provence
2786	OHSS	Ovarian Hyperstimulation Syndrome
2787	OIC	Officer In Charge
2788	OIF	Operation Iraqi Freedom
2789	OIOC	Oriental & India Office Collections (in the British Library)
2790	OJT	On-the-Job Training
2791	OKC	Oklahoma City
2792	OLED	Organic Light-Emitting Diode
2793	OLS	Operational Linescan System
2794	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2795	OME	Osaka Mercantile Exchange
2796	OMFG	Oh My Fucking God
2797	OMG	Oh My God or Or My Gosh
2798	OMGW	Oh My Gosh it's Windy
2799	OMN	Oman (ISO 3166 trigram)
2800	OMNCS	U.S. Office of the Manager for the National Communications System
2801	OMP	Order of Mapungubwe in Platinum
2802	OMS	Order of Mapungubwe in Silver
2803	OMT	Object Model Template
2804	ON	Ontario (postal symbol)
2805	ONC	Orthopaedic Nurse Certified
2806	ONG	Orthodontic National Group
2807	ONI	(U.S.) Office of Naval Intelligence
2808	ONS	Operational Needs Statement
2809	OOAD	Object Oriented Analysis and Design
2810	OOBE	Out-of-body experience
2811	OOCL	Orient Overseas Container Line
2812	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2813	OOF	Out of Facility
2814	OOMF	One Of My Followers
2815	OOO	Out Of the Office
2816	OOTW	Operations Other Than War
2817	OP	Observation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point,in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items),Overpowered,often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong
2818	OPAC	Online Public Access Catalogue
2819	OPCON	Operational control
2820	OPCW	Organisation for the Prohibition of Chemical Weapons
2821	OPEC	Organization of the Petroleum Exporting Countries
2822	OPFOR	Opposing force
2823	OPINTEL	Operational Intelligence
2824	OPLAN	Operation plan (also OpPlan)
2825	OPORD	Operation order
2826	OPSEC	Operations security,Open Platform for Security
2827	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2828	OPTAR	Operational target
2829	OPV	Offshore Patrol Vessel
2830	OQ	Order Quantity,in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items)
2831	OR	Operating Room (surgery),Operational/Operations Research,Oregon (postal symbol),overreciprocation,when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable
2832	ORAU	Oak Ridge Associated Universities
2833	ORB	Object Request Broker
2834	ORBAT	Order of Battle
2835	ORD	Office of Research and Development,Operational Requirements Document
2836	ORF	Operational iness Float
2837	ORISE	Oak Ridge Institute for Science and Education
2838	ORNL	Oak Ridge National Laboratory
2839	ORR	Oak Ridge Reservation (U.S. DOE),Office of Rail Regulation (UK government),Office of Refugee Resettlement,(CIA) Office of Research and Reports,Operational iness Rate,Operational iness Review
2840	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2841	OS	Operating System
2842	Os	Osmium
2843	OSA	Order of St. Augustine
2844	OSCE	Organisation for Security and Cooperation in Europe
2845	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2846	OSDL	Open Source Development Labs
2847	OSE	Own Separate Entrance
2848	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2849	OSETI	Optical SETI also Optical SETI
2850	OSHA	Occupational Safety and Health Administration
2851	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2852	OSIA	(U.S.) On-Site Inspection Agency
2853	OSIRIS	Optical,Spectroscopic,and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias)
2854	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2855	OSM	One Saturday Morning
2856	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2857	OSPA	Operations Security Professional's Association site of OSPA
2858	OSPA	Oregon School Psychologists Association [3]
2859	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2860	OSU	Ohio State University,Oklahoma State University
2861	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2862	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2863	OTC	Over-The-Counter (drugs)
2864	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2865	OTEA	(U.S. Army) Operational Test Evaluation Agency
2866	OTI	Office of Transition Initiatives (United States Agency for International Development)
2867	OTOH	On The Other Hand
2868	OTS	Off the scale,sexually untouchable except for a lot of money
2869	OTSBH	Over The Shoulder Boulder Holder
2870	OTW	On The Way
2871	OTYBL	Over To You Blue Leader
2872	OTYRL	Over To You Red Leader
2873	OU	University of Oklahoma
2874	OW	Old Wykehamist
2875	OWN	Oprah Winfrey Network
2876	OX	IATA code for Orient Thai Airlines
2877	OXC	Optical cross-connect
2878	OXM	Official Xbox Magazine
2879	OXT	Oxytocin
2880	OZ	(?) Australia
2881	p	pico
2882	P2P	Peer-to-peer (networking)
2883	pA	picoampere
2884	PAA	Position Area for Artillery
2885	PABX	Private Automated Branch eXchange (company phone system)
2886	PACOM	(U.S.) Pacific Command
2887	PADI	Professional Association of Diving Instructors
2888	PAEK	PolyArylEtherKetone
2889	PAFC	Plymouth Argyle Football Club
2890	PAH	Polycyclic aromatic hydrocarbon
2891	PAHO	Pan American Health Organization
2892	PAK	Pakistan (ISO 3166 trigram)
2893	PAM	Precision Attack Missile
2894	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2895	PARC	Palo Alto Research Center
2896	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2897	PARP	(NATO Partnership for Peace) Planning And Review Process
2898	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2899	PAS	See entry
2900	PASR	Personnel Accounting and Strength Reporting
2901	PATH	Port Authority Trans-Hudson
2902	PAYD	Pay As You Drive
2903	PAYE	Pay As You Earn
2904	Pb	Lead (Latin Plumbum)
2905	PB	PolyButylene
2906	PBB	PolyBrominated Biphenyl
2907	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2908	PBD	PolyButaDiene
2909	PBDE	PolyBrominated Diphenyl Ether
2910	PBI	PolyBenzImidazole
2911	PBN	PolyButylene Naphthalate
2912	PBOH	Please Become Old History
2913	PBT	PolyButylene Terephthalate
2914	PBX	Private Branch eXchange (company phone system)
2915	pC	picocoulomb
2916	PCAS	Planet-Crossing Asteroid Survey
2917	PCB	see entry
2918	PCCB	Porsche Ceramic Composite Brake
2919	PCCIP	President's Commission on Critical Infrastructure Protection
2920	PCE	PerChlorEthylene
2921	PCIe	Peripheral Component Interconnect Express (computer bus)
2922	PCL	Passive Coherent Location
2923	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2924	PCN	Pitcairn Islands (ISO 3166 trigram)
2925	PCPI	Physician Consortium for Performance Improvement (AMA)
2926	PCR	Polymerase chain reaction
2927	PCSSD	Pulaski County Special School District
2928	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2929	Pd	Palladium
2930	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2931	PDL	Pure Dumb Luck (Texan punk band)
2932	PDN	Pull-Down Network
2933	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2934	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2935	PE	Professional Engineer
2936	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2937	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2938	PEEK	PolyEtherEtherKetone
2939	PEET	Partnerships for Enhancing Expertise in Taxonomy
2940	PEK	PolyEtherKetone
2941	PEPFAR	President's Emergency Plan For AIDS Relief
2942	PER	Peru (ISO 3166 trigram)
2943	perl	usually lower case Practical Extraction and Report Language
2944	PES	PolyEtherSulfone
2945	PEST	UK Public Engagement with Science and Technology
2946	PETE	PolyEthyleneTErephthalate
2947	PETP	PolyEthyleneTerePhthalate
2948	pF	picofarad
2949	PFD	Permanent Fund Dividend = personal flotation device
2950	PFE	Permanent Forest Estate
2951	PfP	Partnership for Peace
2952	Pg	petagram
2953	pg	picogram
2954	PGCE	Postgraduate Certificate in Education
2955	PGD	Pre-implantation Genetic Diagnosis
2956	PGENI	Pharmaco-Genetics for Every Nation Initiative
2957	PGH	Pre-implantation Genetic Haplotyping
2958	PGM	Precision-Guided Munition
2959	PGP	Pretty Good Privacy
2960	PHL	Philippines (ISO 3166 trigram)
2961	PHQ	Patient Health Questionnaire
2962	Pi	Pebi
2963	PIB	PolyIsoButylene
2964	PIC	Person In Charge
2965	PICNIC	Problem In Chair Not In Computer
2966	PICS	Private Investment Capital Subscription
2967	PIF	Partners in Flight
2968	PIG	Pipeline Inspection Gauge
2969	PIN	Personal Identification Number
2970	PINF	People In Need Foundation (Czech charitable organisation)
2971	PIPA	Program on International Policy Attitudes
2972	PIR	Priority Intelligence Requirement
2973	PIRA	Provisional Irish Republican Army
2974	PIREPS	Pilot Reports
2975	PITA	Pain In The Ass
2976	PJ	petajoule
2977	pJ	picojoule
2978	PJHQ	Permanent Joint Headquarters
2979	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2980	PKI	Public Key Infrastructure (cryptography)
2981	PKU	Phenylketonuria
2982	pL	picolitre
2983	PLAID	Precision Location and Identification
2984	PLB	Personal Locator Beacon
2985	PLC	Public Limited Company (British)
2986	PLCC	Plastic Leaded Chip Carrier (electronics)
2987	PLD	Probable Line of Deployment
2988	PLEBS	People Lacking Everyday Basic Skills
2989	PLF	Parachute Landing Fall
2990	PLIF	Planar Laser-Induced Fluorescence
2991	PLL	Phase-Locked Loop (electronics)
2992	PLM	Polarized Light Microscope/Microscopy
2993	PLMBA	Phospholipid Bilayer Microarray
2994	Pln	Platoon
2995	PLO	Palestine Liberation Organization
2996	PLOKTA	Press Lots Of Keys To Abort
2997	PLP	Platonic Life Partner
2998	PLUTO	Pipe Line Under The Ocean
2999	PLW	Palau (ISO 3166 trigram)
3000	pm	picometre
3001	PMC	Primary Motor Cortex
3002	PMI	Positive Material Identification
3003	PMID	PubMed Identifier
3004	PMMA	PolyMethylMethAcrylate
3005	PMS	Premenstrual Syndrome
3006	PMSL	Piss Myself Laughing (Internet shorthand)
3007	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
3008	pN	piconewton
3009	PNAC	Project for the New American Century
3010	PNVS	Pilot Night Vision Sensor
3011	Po	Polonium
3012	PO	Post Office
3013	PO	Purchase Order
3014	POCD	Post-Operative Cognitive Dysfunction
3015	pod	Plain Old Documentation
3016	POFF	Plain Old Flat File
3017	POGO	Project On Government Oversight
3018	POI	Program Of Instruction
3019	POK	Plane Of Knowledge
3020	POLAD	Political Advice
3021	POMDP	Partially observable Markov decision process
3022	PooS	Poo Sniffer (Internet shorthand)
3023	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
3024	POSH	Port Outbound Starboard Home (alleged)
3025	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
3026	POT	Plane Of Tranquility
3027	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3028	POTUS	President of the United States
3029	POV	Point of view
3030	POW	Prisoner of war
3031	PPASC	(U.S.) Plans and Program Analysis Support Center
3032	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3033	PPLI	Precise Participant Location & Identification
3034	PPM	Project Planning and Management
3035	PPO	PolyPhenylene Oxide
3036	PPQN	Pulses Per Quarter Note (ditto)
3037	PPQT	Pre-Production Qualification Test
3038	PPV	Pay-per-view
3039	Pr	Pastor, Priest
3040	PR	Public Relations
3041	Prb	Presbyter
3042	PRBO	Point Reyes Bird Observatory
3043	PRC	People's Republic of China
3044	PRD	CERDEC Product Realization Directorate
3045	PRFG	Partial Fog (METAR Code)
3046	PRI	Puerto Rico (ISO 3166 trigram)
3047	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3048	PRM	Personnel iness Management
3049	PRY	Paraguay (ISO 3166 trigram)
3050	Ps	petasecond
3051	pS	picosiemens
3052	PSG	Pacific Seabird Group
3053	PSI	Portable Source Initiative
3054	PSI	Pounds per square inch
3055	PSS	Personnel System Support
3056	PST	Pacific Standard Time (UTC-8 hours)
3057	PSU	Pennsylvania State University
3058	PsyOp	Psychological Operations
3059	pT	picotesla
3060	Pt	Platinum
3061	PTA	Parent-Teacher Association
3062	PTAL	Public Transport Accessibility Level
3063	PTES	People's Trust for Endangered Species
3064	PTFE	PolyTetraFluoroEthylene
3065	PTI	Pardon the Interruption
3066	PTSD	Post-Traumatic Stress Disorder
3067	Pu	Plutonium
3068	Pub	Publication
3069	PUG	PET Users Group
3070	PUN	Pull-Up Network
3071	PUP	Pull-Up Point
3072	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3073	PV	petavolt
3074	pV	picovolt
3075	PvE	Player versus Environment
3076	PvP	Player versus Player
3077	PVR	Personal Video Recorder
3078	PvZ	Plants vs. Zombies
3079	PW	Palau (postal symbol; ISO 3166 digram)
3080	pW	picowatt
3081	PWA	Pirates With Attitude
3082	PWBA	Pension and Welfare Benefits Administration
3083	PWC	PieceWise Constant (describing a mathematical function)
3084	PwC	PricewaterhouseCoopers (international accounting firm)
3085	PWL	PieceWise Linear (describing a mathematical function)
3086	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3087	PWR	Pressurized Water Reactor
3088	PX	Post eXchange
3089	PYF	French Polynesia (ISO 3166 trigram)
3090	PYMWYMI	Put Your Money Where Your Mouth Is
3091	Q1	First Quarter
3092	Q2	Second Quarter
3093	Q3	Third Quarter
3094	Q4	Fourth Quarter
3095	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
3096	Qantas	Queensland And Northern Territory Aerial Services
3097	QAT	Qatar (ISO 3166 trigram)
3098	QB	Quarterback (football)
3099	QCD	Quantum ChromoDynamics
3100	QDR	Quadrennial Defense Review
3101	QEH	Queen Elizabeth's Hospital
3102	QK	Air Canada Jazz (IATA airline designator)
3103	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3104	QPS	Quark Publishing System
3105	QSCAT	Quick Scatterometer satellite
3106	QSL	Québec Sign Language
3107	QSO	Quasi-Stellar Object
3108	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3109	Quasar	Quasi-stellar radio source
3110	QUB	Queen's University Belfast
3111	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3112	QZ	Awair (IATA airline designator)
3113	R2I	Resistance to Interrogation
3114	RA	Radio Australia
3115	Ra	Radium
3116	RAAF	Royal Australian Air Force
3117	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3118	RACK	Risk Aware Consensual Kink (SM phrase)
3119	Racon	RAdar beaCON
3120	RADA	Royal Academy of Dramatic Art
3121	Radar	Radio Detection And Ranging
3122	RadB	Rad51/Dmc1 homologous protein
3123	RADb	Routing Assets Data Base
3124	RADC	Region Air Defence Commander
3125	RAE	UK Royal Aircraft Establishment (-1991)
3126	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3127	RAM	Royal Air Maroc
3128	Ramark	RAdar MARKer
3129	RAOC	Rear Area Operation Centre
3130	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3131	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3132	RATELO	Radiotelephone Operator
3133	Rb	Rubidium
3134	RB	Running Back (football)
3135	RBI	Runs Batted In
3136	RC	see entry
3137	RCAF	Royal Canadian Air Force
3138	RCC	Rescue Co-ordination Centre
3139	RCCO	Royal Canadian College of Organists
3140	RCHA	Royal Canadian Horse Artillery (regiment)
3141	RCMP	Royal Canadian Mounted Police
3142	RD	Radio Disney
3143	RDD	Radiological Dispersion Device
3144	RDM	Remotely Delivered/Deliverable Mine
3145	RDT	Remote Digital Terminal
3146	RDV	Remote Detection Vehicle
3147	Re	Rhenium
3148	RE	Royal Engineers
3149	REACT	Remote Electronically Activated Control Technology
3150	REAM	Retired Educators Association of Minnesota
3151	RECCE	Reconnaissance
3152	REEF	Reef Environmental Education Foundation
3153	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3154	REME	Royal Electrical and Mechanical Engineers
3155	RERC	Rehabilitation Engineering Research Center
3156	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3157	REU	Réunion (ISO 3166 trigram)
3158	Rf	Rutherfordium
3159	RFD	Request for Documentation
3160	RFE	Request for Evaluation
3161	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3162	RFF	Right of First Refusal (legal term)
3163	RFID	Radio Frequency IDentification
3164	RFL	Rugby Football League
3165	RFP	Request for Proposal
3166	RFQ	Request for Quotation
3167	RFT	Request for Tender
3168	RFU	Rugby Football Union
3169	RG	Republican Guard
3170	Rg	Roentgenium
3171	RGB	Red Green Blue (colour model)
3172	RGBI	Red Green Blue Intensity (ditto)
3173	Rh	Rhodium
3174	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3175	RHIC	Relativistic Heavy Ion Collider
3176	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3177	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3178	RHU	Replacement Holding Unit
3179	RI	Rhode Island (postal symbol)
3180	RIAA	Recording Industry Association of America
3181	RIBA	Royal Institute of British Architects
3182	RIFA	Red imported fire ant
3183	RILA	Retail Industry Leaders Association
3184	RIMVS	Retinal Imaging Machine Vision System
3185	RINO	Republican In Name Only[1]
3186	RISC	Reduced Instruction Set Computer
3187	RJD	Reduced Julian Day
3188	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3189	RKO	Radio-Keith-Orpheum Pictures
3190	RLP	Recognised [Operating/Operational] Land Picture
3191	RLS	Restless Leg Syndrome
3192	RLY	Rally Point
3193	RM	see separate disambiguation page
3194	RMC	Robert Menzies College
3195	RMDA	Records Management and Declassification Agency
3196	RMP	Recognised [Operating/Operational] Maritime Picture
3197	RN	Radio Netherlands
3198	Rn	Radon
3199	RNA	RiboNucleic Acid
3200	RNAD	Royal Naval Armaments Depot (UK)
3201	RNPS	Radio Network Planning System
3202	RNZ	Radio New Zealand
3203	RNZI	Radio New Zealand International
3204	ROA	Rate Of Ascent
3205	ROE	Rules Of Engagement
3206	ROFLOL	Rolling On the Floor Laughing Out Loud
3207	ROH	Ring of Honor
3208	ROK	Republic of Korea
3209	ROP	Render Output Pipeline
3210	ROPE	Research Opportunity and Performance Evidence
3211	ROS	Reactive Oxygen Species
3212	ROU	Romania (ISO 3166 trigram)
3213	ROV	Remotely Operated Vehicle
3214	ROZ	Restricted Operations Zone
3215	RPA	Regional Plan Association
3216	RPD	Recognition-Primed Decision-making
3217	RPF	Rwandan Patriotic Front
3218	RPL	Reverse Polish Lisp
3219	rpm	revolutions per minute
3220	RPN	reverse Polish notation
3221	rps	revolutions per second
3222	RPV	Remotely Piloted Vehicle
3223	RQ	Puerto Rico (FIPS 10-4 territory code)
3224	RRB	Railroad Retirement Board
3225	RRN	Recurrence Rate Number
3226	RRP	Recurrent Respiratory Papillomatosis
3227	RRS	Racing Rules of Sailing
3228	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3229	RS	Russia (FIPS 10-4 country code)
3230	RSI	Repetitive Strain Injury
3231	RSJ	Rolled Steel Joist (construction)
3232	RSN	Real Soon Now (coined by author Jerry Pournelle)
3233	RSPB	(UK) Royal Society for the Protection of Birds
3234	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3235	RSR	Required Supply Rate
3236	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3237	RSRI	Red Sands Research Institute
3238	RSS	Really Simple Syndication
3239	RTA	Road traffic accident (British)
3240	RTBF	Radio-Télévision belge de la Communauté française
3241	RTF	Rich Text Format
3242	RTFM	the Fucking/Fine Manual
3243	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3244	RTI	Run-Time Infrastructure (Simulation)
3245	RTL	see entry
3246	RTP	Real-time Transport Protocol
3247	RTS	see entry
3248	RTT	Round Trip Timing
3249	RU	Russia (ISO 3166 digram)
3250	Ru	Ruthenium
3251	RUC	Royal Ulster Constabulary
3252	RUS	Russia (ISO 3166 trigram)
3253	RUSI	Royal United Services Institute for Defence Studies
3254	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3255	RWA	Rwanda (ISO 3166 trigram)
3256	RWH	Rain Water Harvesting
3257	RWR	Radar Warning Receiver
3258	RWS	Remote Weapon Station
3259	RX	Receive
3260	SBNO	Standing but not operating (in reference to amusement parks)
3261	SCOTUS	Supreme Court of the United States
3262	SCROTUS	So-called Ruler of the United States
3263	SDHC	Secure Digital High Capacity
3264	SDXC	Secure Digital eXtended Capacity
3265	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3266	SGOTUS	Second Gentleman of the United States
3267	SHO	Showtime (see also sho.com)
3268	SIRI	Service Interface for Real Time Information
3269	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3270	SLOTUS	Second Lady of the United States (the vice president's wife)
3271	SoCon	Southern Conference (U.S. college sports)
3272	STB	Surface Transportation Board[2]
3273	SWAC	Southwestern Athletic Conference
3274	SWAN	System for Wearable Audio Navigation
3275	SWAT	Special Weapons And Tactics
3276	SWF	Single White Female
3277	Ta	Tantalum
3278	TAACOM	U.S. Theater Army Area Command
3279	TAADCOORD	Theatre Army Air Defence Co-ordinator
3280	TAAR	Trace Amine-Associated Receptor
3281	TAC	U.S. Tactical Air Command (1946-1992)
3282	TACAN	Tactical Air Navigation
3283	TACCO	Tactical Coordinator
3284	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3285	TACDAR	Tactical Detection And Reporting
3286	TACSOP	Tactical SOP (Standing Operating Procedure)
3287	TADIL	Tactical Digital Information Link
3288	TAI	Target[ed] Area of Interest
3289	TAJ	Tom and Jerry
3290	TAJT	Tom and Jerry Tales
3291	TALES	Technical Advice and Lexicon for Enabling Simulation
3292	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3293	TANP	Terrain-Aware Network Planner
3294	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)
3295	TAPPS	Texas Association of Private and Parochial Schools
3296	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3297	TAS	Tasmania (postal symbol)
3298	TASER	Thomas A. Swift's Electric Rifle
3299	TASM	Tactical Air-to-Surface Missile
3300	TAT	Tourism Authority of Thailand
3301	TATP	TriAcetone TriPeroxide
3302	TATT	Tired All The Time (medical diagnosis in-joke)
3303	Tb	Terbium
3304	TB	Tuberculosis
3305	TBA	to be announced
3306	TBBPA	TetraBromoBisPhenol-A
3307	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3308	TBF	to be fair
3309	TBH	To Be Honest
3310	TBL	Turkish Basketball League
3311	TBS	Turner Broadcasting System
3312	TBT	Tributyltin
3313	Tc	Technetium
3314	TCAA	Top Counter-Assault Agents
3315	TCAS	Traffic Collision Avoidance System
3316	TCCCS	Tactical Command,Control and Communication System
3317	TCD	Chad (ISO 3166 trigram)
3318	TCHD	Truck Cargo Heavy Duty
3319	TCL	Tool Command Language
3320	TCM	Turner Classic Movies
3321	TCU	Texas Christian University
3322	TCW	Tasty Coma Wife
3323	TCWMS	Tele-Center Workforce Management System
3324	TDA	The Disney Afternoon
3325	TDL	Tactical Data Link
3326	TDM	Time-Division Multiplexing
3327	TDMA	Time Division Multiple Access
3328	TDP	Technology Demonstration Programme
3329	TDRS	Tracking Data and Relay Satellite
3330	Te	Tellurium
3331	TEAL	Tasman Empire Airways Limited
3332	Team	Together everyone achieves more
3333	TEAMS	The East African Marine System (fiber optic cable)
3334	TED	Technology Entertainment Design prize
3335	TENCAP	Tactical Exploitation of National Capabilities
3336	TERS	Tactical Event Reporting System
3337	TES	Tactical Event System
3338	TEST	Thesaurus of Engineering and Scientific Terms
3339	TEU	Twenty-foot equivalent unit (cargo capacity)
3340	TeVeS	Tensor Vector Scalar theory
3341	TFMPP	Trifluorophenylmethylpiperazine
3342	TFR	Total Fertility Rate
3343	TFT	Thin-Film Transistor
3344	Tg	Teragram
3345	TG	Togo (ISO 3166 digram)
3346	TGO	Togo (ISO 3166 trigram)
3347	Th	Thorium
3348	THA	Thailand (ISO 3166 trigram)
3349	THAAD	Terminal High Altitude Area Defence
3350	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3351	THEL	Tactical High Energy Laser ACTD
3352	THG	Tetrahydrogestrinone
3353	TIA	Total Information Awareness initiative
3354	TIA	Transient Ischemic Attack
3355	TIALD	Thermal Imaging and Airborne Laser Designation
3356	TIBS	Tactical Information Broadcast System
3357	TIC	Troops In Contact
3358	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3359	TINC	There Is No Cabal
3360	TIP	Thermal Identification Panel
3361	tits	Toes in the Sand
3362	TJD	Truncated Julian Day
3363	TJK	Tajikistan (ISO 3166 trigram)
3364	TKL	Tokelau (ISO 3166 trigram)
3365	TKM	Turkmenistan (ISO 3166 trigram)
3366	Tl	Thallium
3367	TLA	Three-Letter Abbreviation/Acronym
3368	TLAM	Tomahawk Land Attack Missile
3369	TLATOJL	The Life and Times of Juniper Lee
3370	TLPM	T1 Line Performance Monitor
3371	Tm	Terametre
3372	TMAP	Texas Medication Algorithm Project
3373	TMC	The Movie Channel
3374	TMD	Theatre Missile Defence
3375	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3376	TMI	Too Much Information
3377	TMJ	TemporoMandibular Joint (syndrome)
3378	TMNT	Teenage Mutant Ninja Turtles
3379	TMPG	Transparent Multi-Platform Gateway
3380	TMR	Twin Main Rotors (helicopter type)
3381	TMS	Transcranial Magnetic Stimulation
3382	TMT	Thirty Meter Telescope
3383	TMTOWTDI	There's Than One Way To Do It (from Perl)
3384	TNA	Total Nonstop Action Wrestling
3385	TNO	Trans-Neptunian Object
3386	TOBS	Time of OBServation
3387	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3388	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3389	TOGS	Thermal Observation Gunnery Sight
3390	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3391	TON	Tonga (ISO 3166 trigram)
3392	TOS	Tape Operating System,Terms of service,The Original Series,used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System
3393	TOT	Time On Target
3394	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3395	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3396	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3397	TPI	The point is
3398	TPO	Thrombopoietin
3399	TPS	The Pennington School
3400	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3401	TQ	Top Qualifier (similar to Pole Position in car racing)
3402	TRA	Technology iness Assessment
3403	TRAC	(U.S. Army) TRADOC Analysis Center
3404	TRACON	Terminal Radar Approach Control
3405	TRADOC	(U.S. Army) Training and Doctrine Command
3406	TRANSCOM	U.S. Transportation Command
3407	TRAP	Tactical Receive equipment and related Applications
3408	TRASANA	TRADOC Systems Analysis Agency
3409	TRD	Towed Radar Decoy
3410	TRIGAT	Third Generation Antitank (missile)
3411	TRL	Technology readiness level
3412	Trp	Troop
3413	TRU	Transuranic
3414	TRUEX	Training in Urban Environment Exercise
3415	TRW	Thompson Ramo Wooldridge Inc.
3416	Ts	Terasecond
3417	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3418	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3419	TSEC	Transmission Security Encryption Code
3420	TSL	Transportation Security Laboratory
3421	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3422	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3423	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3424	TSR	Terminate and Stay Resident
3425	TSSIA	The Subject Says It All
3426	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3427	TTCT	Torrance Tests of Creative Thinking
3428	TTFN	Ta Ta For Now
3429	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3430	TTO	Trinidad and Tobago (ISO 3166 trigram)
3431	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3432	TTTEAF	Thomas the Tank Engine and Friends
3433	TTY	TeleTYpewriter (Printer)
3434	TTYL	To You Later (Internet slang)
3435	TTZ	Tetrazolium
3436	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3437	TUC	Trades Union Congress
3438	TUG	TeX Users Group
3439	TUI	Text-based user interface (cf. CLI),among other uses
3440	TUN	Tunisia (ISO 3166 trigram)
3441	TUNS	Technical University of Nova Scotia
3442	TUR	Turkey (ISO 3166 trigram)
3443	TUSK	Tank Urban Survival Kit
3444	TUV	Tuvalu (ISO 3166 trigram)
3445	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3446	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3447	TVA	Tennessee Valley Authority
3448	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3449	TVR	TreVor (Wilkinson) Racing
3450	TVS	Tornado vortex signature
3451	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3452	TWAIN	Technology Without An Interesting Name
3453	TWE	Trans World Entertainment
3454	TWI	The Welding Institute
3455	TWIP	Take What Insurance Pays,When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference
3456	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3457	TWP	Technical Working Paper
3458	TWS	Thermal Weapon Sight,Track While Scan
3459	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3460	TXV	Thermostatic Expansion Valve
3461	TYT	Take Your Time,Internet chat abbreviation
3462	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3463	TZA	Tanzania (ISO 3166 trigram)
3464	TZC	Tetrazolium chloride
3465	U	Uranium
3466	UA	Ukraine (ISO 3166 digram) Unit of Action
3467	UAAP	University Athletic Association of the Philippines
3468	UAB	University of Alabama at Birmingham
3469	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3470	UBC	United Baptist Church,University of British Columbia
3471	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3472	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3473	UCBSA	United Cricket Board of South Africa
3474	UCF	University of Central Florida
3475	UCLA	University of California at Los Angeles
3476	UCLES	University of Cambridge Local Examinations Syndicate
3477	UCR	University of California at Riverside
3478	UCR	University of Costa Rica
3479	UCS	Union of Concerned Scientists
3480	UCSB	University of California at Santa Barbara
3481	UCSD	University of California at San Diego
3482	UDAS	Uppsala-DLR Asteroid Survey
3483	UDDI	Universal Description,Discovery and Integration
3484	UDTS	Uppsala-DLR Trojan Survey
3485	UE	Unit of Employment
3486	UEFA	Union of European Football Associations
3487	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3488	UFC	Ultimate Fighting Championship
3489	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3490	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3491	UGA	Uganda (ISO 3166 trigram)
3492	UGV	Unmanned Ground Vehicle
3493	UHF	Ultra High Frequency
3494	UHMW	Ultra-High Molecular Weight
3495	UHRB	Ultra-High Resolution Building (simulation)
3496	UIC	University of Illinois at Chicago
3497	UID	User ID
3498	UIUC	University of Illinois at Urbana-Champaign
3499	UJTL	Universal Joint Task List
3500	UKIP	United Kingdom Independence Party
3501	UKR	Ukraine (ISO 3166 trigram)
3502	UL	Underwriters Laboratories
3503	ULF	Ultra Low Frequency
3504	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3505	UMCP	Unit Maintenance Collection Point
3506	UMES	University of Maryland Eastern Shore
3507	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3508	UMIST	University of Manchester Institute of Science and Technology
3509	UMTS	Universal Mobile Telecommunications System
3510	UN	United Nations
3511	UNABOM	University and airline bomber (FBI case name)
3512	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3513	UNAMSIL	United Nations Mission in Sierra Leone
3514	UNCF	United Negro College Fund
3515	UNCLOS	United Nations Convention on the Law of the Sea
3516	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3517	UNCTAD	United Nations Conference on Trade and Development
3518	UNDCP	United Nations Drug Control Programme
3519	UNDE	(i/a) Union of National Defence Employees (Canada)
3520	UNDP	United Nations Development Programme
3521	UNEP	United Nations Environment Programme
3522	UNFCCC	United Nations Framework Convention on Climate Change
3523	UNFICYP	United Nations Peacekeeping Force in Cyprus
3524	UNGEGN	United Nations Group of Experts on Geographical Names
3525	UNHCR	United Nations High Commission (er) for Refugees
3526	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3527	UNICRI	United Nations Interregional Crime and Justice Research Institute
3528	UNIDO	United Nations Industrial Development Organization
3529	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3530	UNMIK	United Nations Interim Administration Mission in Kosovo
3531	UNOSOM	United Nations Operations in Somalia
3532	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3533	UNRISD	United Nations Research Institute for Social Development
3534	UNSM	Union of Nova Scotian Municipalities
3535	UNTAC	United Nations Transitional Authority in Cambodia
3536	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3537	UNU	United Nations University
3538	UPdM	Università Popolare della Multimedialità
3539	UPI	United Press International
3540	UPN	United Paramount Network
3541	UPU	Universal Postal Union
3542	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3543	URD	User Requirements Document
3544	URY	Uruguay (ISO 3166 trigram)
3545	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3546	USAF	United States Air Force
3547	USAFSPC	U.S. Air Force Space Command
3548	USAID	United States Agency for International Development
3549	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3550	USAREUR	United States Army Europe
3551	USB	Universal Serial Bus
3552	USCG	United States Coast Guard
3553	USDA	United States Department of Agriculture
3554	USDI	United States Department of the Interior
3555	USDOE	United States Department of Energy
3556	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3557	USEC	United States Enrichment Corporation
3558	USFL	United States Football League
3559	USFWS	United States Fish and Wildlife Service
3560	USGS	United States Geological Survey
3561	USIA	United States Information Agency
3562	USJFCOM	United States Joint Forces Command
3563	USMC	United States Marine Corps
3564	USMNT	United States men's national (soccer) team
3565	USN	United States Navy
3566	USNB	United States Naval Base
3567	USNG	United States National Grid
3568	USNH	United States Naval Hospital
3569	USNI	United States Naval Institute
3570	USNO	U.S. Naval Observatory
3571	USNOFS	United States Naval Observatory Flagstaff Station
3572	USNP	United States Newspaper Program
3573	USNR	United States Navy Reserve
3574	USNS	United States Naval Ship
3575	USNZ	University Sport New Zealand
3576	USPS	United States Postal Service
3577	USPTO	United States Patent and Trademark Office
3578	USS	United States ship (sometimes meaningless; see Star Trek)
3579	USSPACECOM	United States Space Command
3580	USSR	Union of Soviet Socialist Republics
3581	UST	Underground Storage Tank
3582	USTRANSCOM	United States Transportation Command
3583	USWNT	United States women's national (soccer) team
3584	UT	Universal Time
3585	UTEP	University of Texas at El Paso (pronounced you-tep)
3586	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3587	UUA	Unitarian Universalist Association
3588	UUID	Universally Unique Identifier (see also GUID)
3589	UUV	Unmanned Underwater Vehicle
3590	UW	University of Washington
3591	UWO	University of Western Ontario
3592	UWT	Under Water Telephone
3593	UWTG	Under Water Tug
3594	UWW	United World Wrestling
3595	UXO	Unexploded Ordnance
3596	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3597	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3598	UZB	Uzbekistan (ISO 3166 trigram)
3599	VACIS	Vehicle And Container Inspection System
3600	VACIS	Victorian Ambulance Clinical Information System
3601	VANOS	Variable Nockenwelle System
3602	VAO	Vienna Art Orchestra
3603	VBA	Visual Basic for Applications
3604	vCJD	Variant Creutzfeldt-Jakob Disease
3605	VCNO	(U.S.) Vice Chief of Naval Operations
3606	VCofS	Vice Chief of Staff
3607	VCR	Video cassette recorder
3608	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3609	VDFS	VisualSVN Distributed File System (VDFS)
3610	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3611	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3612	VEN	Venezuela (ISO 3166 trigram)
3613	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3614	VfD	s for deletion (used in Wikipedia)
3615	VFM	Value For Money
3616	VFMO	Very Fast Moving Object (astronomy)
3617	VFT	Virtual Function Table
3618	VFW	Veterans of Foreign Wars
3619	VG	British Virgin Islands (ISO 3166 digram)
3620	VGB	British Virgin Islands (ISO 3166 trigram)
3621	VH1	Video Hits One
3622	VHF	Very High Frequency
3623	VIA	Versatile Interface Adapter
3624	VIDS	Visual Information Display System
3625	VII	7 (in Roman numerals)
3626	VIII	8 (in Roman numerals)
3627	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3628	VIP	Very Important Person
3629	VISCII	VIetnamese Standard Code for Information Interchange
3630	VIT	Vellore Institute of Technology
3631	VIVO	Video In Video Out
3632	VJ	Video Jockey
3633	VLAD	Vertical Line Array DIFAR
3634	VLBA	Very Long Baseline Array
3635	VLF	Very Low Frequency
3636	VLIW	Very Long Instruction Word
3637	VLPFC	VentroLateral PreFrontal Cortex
3638	VLPMC	VentroLateral PreMotor Cortex
3639	VLSI	Very-large-scale integration
3640	VM	Vietnam (FIPS 10-4 country code)
3641	VMF	Marine Fighting Squadron of the United States Marine Corps
3642	VMF	Variable Message Format
3643	VMN	VentroMedial Nucleus (neurophysiology)
3644	VN	Vietnam (ISO 3166 digram)
3645	VNIR	Visible and Near InfraRed
3646	VNM	Vietnam (ISO 3166 trigram)
3647	VNS	see entry
3648	VOA	Voice of America
3649	VOIP	Voice Over Internet Protocol
3650	VOLT	Visual OpenType Layout Tool
3651	VON	Victorian Order of Nurses
3652	VOR	Voice of Russia
3653	VOX	Voice Operated oscillator
3654	VPOTUS	Vice President of the United States
3655	VPN	Virtual Private Network
3656	VR	Virtual Reality
3657	VRSG	Virtual Reality Scene Generator
3658	VSHORAD	Very Short Range Air Defence
3659	VSO	Voluntary Services Overseas
3660	VSR	Very Special Relativity
3661	VTC	Video Tele-Conference
3662	VTEC	Variable valve Timing and Electronic lift Control
3663	VTOL	Vertical Take-Off & Landing
3664	VUB	Vrije Universiteit Brussel (Belgian university)
3665	VUT	Vanuatu (ISO 3166 trigram)
3666	VVAF	Vietnam Veterans of America Foundation
3667	VW	Volkswagen
3668	VZ	Verizon Communications (NYSE code)
3669	W3C	World Wide Web Consortium
3670	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3671	WAAF	Women's Auxiliary Air Force (World War II UK)
3672	WACC	Weighted Average Cost of Capital (accounting)
3673	WACS	What-A-Cartoon! Show
3674	WAD	Weapons Alert Designator
3675	WAGGGS	World Association of Girl Guides and Girl Scouts
3676	WAL	see entry
3677	WAN	Wide area network
3678	WAP	Wireless Application Protocol
3679	WAPIMA	What a pain in my ass
3680	WAR	With All Respect
3681	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3682	WAYP	White And Yellow Pages
3683	Wb	Weber
3684	WBC	World Boxing Council
3685	WBE	Work Breakdown Element
3686	WBO	World Boxing Organization
3687	WCBO	World Chess Boxing Organisation
3688	WCBP	World Center for Birds of Prey
3689	WCL	World Confederation of Labour
3690	WCW	World Championship Wrestling
3691	WDIN	Wildlife Disease Information Node
3692	WDWR	Walt Disney World Resort
3693	WEBS	Weapon Effectiveness Battle Simulation
3694	WEC	World Extreme Cagefighting
3695	WEEE	Waste Electrical and Electronic Equipment
3696	WEF	World Economic Forum
3697	WEM	West Edmonton Mall
3698	WEU	Western European Union
3699	WEZ	Weapon Engagement Zone
3700	WF	Wallis and Futuna Islands (ISO 3166 digram)
3701	WFC	Women's Forage Corps (World War II UK)
3702	WFD	Weapon of Focused Destruction
3703	WFF	Wallops Flight Facility
3704	WFI	Water for Injection
3705	WFH	Working from home
3706	WFP	World Food Program
3707	WFZ	Weapons Free Zone
3708	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3709	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3710	WHI	Women's Health Initiative
3711	WHIP	Walks plus hits per inning pitched
3712	WHO	World Health Organisation
3713	WHS	(U.S.) Washington Headquarters Services
3714	WIIFM	What's in it for me?
3715	WIP	Work In Progress
3716	WIPO	World Intellectual Property Organization
3717	WIPP	[Nuclear] Waste Isolation Pilot Plant
3718	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3719	WKYP	Will Keep You Posted
3720	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3721	WLB	Women's Land Brigade (World War II Canada)
3722	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3723	WLOG	Without Loss Of Generality (see WOLOG)
3724	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3725	WMANUS	West Midlands Area National Union of Students
3726	WMD	World Movement for Democracy
3727	WMI	Wildlife Management Institute
3728	WMO	World Meteorological Organization
3729	WNA	World Nuclear Association
3730	WNF	Will Not Fix
3731	WNIT	Women's National Invitation Tournament
3732	WNW	West North-West
3733	WO	Warrant Officer
3734	WOF	Width of Fabric
3735	WOFT	Waste Of Fucking Time
3736	WOFTAM	Waste Of Fucking Time And Money
3737	WOI	Wheels Of Italy
3738	WOM	Write Only Memory
3739	WOS	Wilson Ornithological Society
3740	WOT	Waste Of Time
3741	WP	White Phosphorus (ammunition)
3742	WPB	War Production Board during World War II
3743	WPE	World Pork Expo
3744	WPK	Wider Peacekeeping
3745	WR	Wide Receiver (football)
3746	WRAC	Women's Royal Army Corps (World War II UK)
3747	WRAIR	Walter Reed Army Institute of Research
3748	WRBWWRM	We Best What We Most
3749	WRC	World Rally Championship
3750	WRC	World Religions Conference
3751	WRNG	Warning
3752	WRS	Worldwide Reference System
3753	WRT	NHS Workforce Review Team
3754	WRT	The Linksys routers whose model name start with 'WRT'
3755	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3756	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3757	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3758	WRT	Wireless Ronin Technologies (digital signage)
3759	WRT	World Rally Team
3760	WRT	Writer Response Theory
3761	WSC	Weapon System Catalogue
3762	WSDL	Web Services Description Language
3763	WSJ	(The) Wall Street Journal
3764	WSROC	Western Sydney Regional Organisation of Councils
3765	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3766	WSTC	Women Signallers Territorial Corps (World War II UK)
3767	WSW	West South-West
3768	WTC	World Trade Center
3769	WTF	What the fuck?; also What a Terrible Failure (android)
3770	WTFH	What The Fucking Hell
3771	WTH	What the Hell
3772	WTO	World Trade Organization
3773	WUBU2	What you been up to
3774	WV	West Virginia (postal symbol)
3775	WVA	World Veterinary Association
3776	WVIAC	West Virginia Intercollegiate Athletic Conference
3777	WVR	Women's Volunteer Reserve (World War II UK)
3778	WVSC	Women's Volunteer Service Corps (World War II Canada)
3779	WVU	West Virginia University
3780	WW	see entry
3781	WWE	World Wrestling Entertainment
3782	WWI	World War I
3783	WWII	World War II
3784	WWIII	World War III
3785	WWJD	What would Jesus do?
3786	WWS	Wheaton Warrenville South High School
3787	WWWF	World Wide Wrestling Federation
3788	WXO	Weather [Executive] Officer
3789	WY	Wyoming (postal symbol)
3790	WZ	Swaziland (FIPS 10-4 country code)
3791	XBML	eXtended Business Modelling Language
3792	XC	Ninety (in Roman numerals)
3793	XCBL	XML Common Business Library
3794	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3795	Xe	Xenon
3796	XFA	XML Forms Architecture
3797	XFC	Xtreme Fighting Championships
3798	XFD	Fighter aircraft made by Douglas
3799	Xfe	X File Explorer
3800	XFF	X-Forwarded-For
3801	XFG	Exfoliation glaucoma
3802	XFR	Automobile made by Jaguar
3803	XFT	X FreeType interface library
3804	XG	Automobile made by Hyundai
3805	XGA	Extended Graphics Array
3806	XGP	Extreme Game Player
3807	XHTML	eXtensible Hypertext Markup Language
3808	XI	Eleven (in Roman numerals)
3809	XII	Twelve (in Roman numerals)
3810	XIII	Thirteen (in Roman numerals)
3811	XIV	Fourteen (in Roman numerals)
3812	XIX	Nineteen (in Roman numerals)
3813	XJS	Automobile made by Jaguar
3814	XKB	X keyboard extension
3815	XKE	Automobile made by Jaguar
3816	XKR	Automobile made by Jaguar
3817	XML	eXtensible Markup Language
3818	XMSF	eXtensible Modelling and Simulation Framework
3819	XNA	X-No-Archive,Xeno Nucleic Acid
3820	XNC	X Northern Captain
3821	XNU	X is Not Unix
3822	XP	eXperience Point (role-playing games)
3823	XQJ	XQuery API for Java™
3824	XRAY	X-Ray
3825	XRML	eXtensible Rights Markup Language
3826	XS	Xiaolin Showdown
3827	XSL	eXtensible Style Language
3828	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3829	XUL	XML User Interface Language
3830	XV	Fifteen (in Roman numerals)
3831	XVI	Sixteen (in Roman numerals)
3832	XVII	Seventeen (in Roman numerals)
3833	XVIII	Eighteen (in Roman numerals)
3834	XWF	Xcitement Wrestling Federation
3835	XX	Twenty (in Roman numerals)
3836	Xyl	Xylobium
3837	XZN	Triple square screw driver
3838	y	Yocto-
3839	Y2K	Year Two Thousand
3840	yA	Yoctoampere
3841	Ya	Yottayear
3842	YaBPr	Yet another Brother Pat rant
3843	YABSLAG	Yet another boy singing like a girl
3844	YAC	Youth-Adult Committee
3845	YAFLA	Yet Another Five Letter Abbreviation
3846	YAP	Young Aspiring Professional
3847	YB	Youcef Benzouada (Southern Algerian name)
3848	Yb	Ytterbium
3849	yC	Yoctocoulomb
3850	YC	Yottacoulomb
3851	YDS	Yosemite Decimal System (climbing)
3852	YE	Yemen (ISO 3166 digram)
3853	YEM	Yemen (ISO 3166 trigram)
3854	yF	Yoctofarad
3855	YF	Yottafarad
3856	yg	Yoctogram
3857	Yg	Yottagram
3858	YGCO	Yamaneko Group of Comet Observers
3859	Ygo	Yu-Gi-Oh!
3860	yH	Yoctohenry
3861	YH	Yottahenry
3862	YHBT	You Have Been Trolled
3863	YHII	You Have It Inside
3864	YHS	Ya Hoor sur!
3865	Yi	Yobi
3866	Yippie	Youth International Party + suffix
3867	yJ	Yoctojoule
3868	YJ	Yottajoule
3869	yK	Yoctokelvin
3870	YK	Yottakelvin
3871	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3872	yL	Yoctolitre
3873	YL	Yottalitre
3874	ym	Yoctometre
3875	Ym	Yottametre
3876	YMMD	You Make My Day
3877	yN	Yoctonewton
3878	YN	Yottanewton
3879	YOLO	You Only Live Once
3880	YPA	Yards per Pass Attempt (football statistic)
3881	YPIO	Your Problem Is Obvious
3882	YPO	Young Presidents' Organization
3883	ys	Yoctosecond
3884	yS	Yoctosiemens
3885	Ys	Yottasecond
3886	YS	Yottasiemens
3887	YSI	Young Scots for Independence
3888	yT	Yoctotesla
3889	YTD	Year-To-Date
3890	YTM	Yield to Maturity
3891	YTS	Youth Training Scheme
3892	YTT	Yoshi Topsy-Turvy
3893	Yuppie	Young Urban Professional + suffix
3894	yV	Yoctovolt
3895	YV	Yottavolt
3896	yW	Yoctowatt
3897	YW	Yottawatt
3898	YYH	YuYu Hakusho
3899	z	Zepto
3900	Z	Zetta
3901	zA	Zeptoampere
3902	ZAF	South Africa (ISO 3166 trigram)
3903	ZAMS	Zero age main sequence
3904	ZAS	Zylinder Abschaltung System
3905	ZBT	Zero-Balance Transfer (accounting)
3906	zC	Zeptocoulomb
3907	ZC	Zettacoulomb
3908	ZCM	(n) ZENworks Configuration Management
3909	ZCMK	Zone Control Master Key
3910	ZCU	Zimbabwe Cricket Union
3911	\a	Atto-