PowerShell/Data/Abbr/various.csv

1	Abbreviation,Definition
2	0D,obvious deed
3	1AM,Air Mechanic 1st Class
4	1D,One-Dimensional
5	2AM,Air Mechanic 2nd Class
6	2D, Two-dimensional
7	2G, Second-generation mobile (cellular, wireless) telephone system
8	2LA,Two Letter Acronym
9	2Lt,2nd Lieutenant
10	3AM,Air Mechanic 3rd Class
11	3D, Three-Dimensional
12	3G, Third-generation mobile telephone system
13	3i, Investors In Industry (venture capitalists)
14	3M, Minnesota Mining and Manufacturing Company
15	4D, Four-Dimensional (usually three spatial plus one temporal dimension, sometimes four spatial ones)
16	4G, Fourth-generation mobile telephone system
17	4GL, Fourth-generation programming language
18	4WD, Four-wheel drive
19	5D,Five-Dimensional
20	6D,Six-Dimensional
21	7D,Seven-Dimensional
22	8D,Eight-Dimensional
23	9D,Nine-Dimensional
24	\a, Atto-
25	A, Ampere
26	A1C,Airman First Class
27	A4,many, including a European standard office paper size; see entry
28	A10, Atlantic 10 Conference
29	aa, Afar language (ISO 639-1 code)
30	aA, Attoampere
31	AA- achieved availability,Alcoholics Anonymous, Armed Forces Americas (postal symbol),Aruba (FIPS 10-4 territory code), assembly area,Automobile Association,avenue of approach
32	AAAI, Association for the Advancement of Artificial Intelligence, formerly American Association for Artificial Intelligence
33	AAAS, American Association for the Advancement of Science
34	AAAV, Advanced Amphibious Assault Vehicle
35	AAC- American Athletic Conference,Army Air Corps (British Army)
36	AAD- analogue-analogue-digital (CD quality),Australian Antarctic Division
37	AADD,Adult attention deficit disorder
38	AADT, annual average daily traffic
39	AADAC, Alberta Alcohol and Drug Abuse Commission
40	AADC- area air defense commander, amino acid decarboxylase, aromatic L-amino acid decarboxylase, Australian Antarctic Data Centre
41	AAFC- U.S. Army Air Corps Ferrying Command (1941-1942),All-America Football Conference (1946-1949)
42	AAFES, Army and Air Force Exchange Service
43	AAI, applied artificial intelligence
44	AAIS, advanced airborne interceptor simulator
45	AAM, air-to-air missile
46	AAMOF, as a matter of fact
47	AAN, American Academy of Nursing
48	AANEAS, Anglo-Australian Near-Earth Asteroid Survey
49	AAODL, Atmospheric Aerosols and Optics Data Library
50	AAP- advanced acquisition plan,Allied administrative publication,American Academy of Pediatrics
51	AAPC, Accounting and Auditing Policy Committee
52	aar, Afar language (ISO 639-2 code)
53	AAR- after-action review,Association of American Railroads
54	AARP,(i/s) American Association of Retired Persons (now officially known only by the initials)
55	AASPEM, advanced air-to-air system performance evaluation model
56	AAT, Australian Antarctic Territory
57	AAV, Amphibious Assault Vehicle
58	AAWC, anti-air warfare commander
59	ab, Abkhaz language (ISO 639-1 code)
60	AB- Able Seaman (both the rank and the occupation), Alberta (postal symbol)
61	ABA- Adriatic Basketball Association,American Bar Association,American Basketball Association,American Beverage Association,American Bicycle Association,American Birding Association,Australian Broadcasting Authority
62	ABB, ASEA Brown Boveri (Swiss-Swedish multinational company)
63	ABBA, Agnetha, Benny, Björn, Anni-Frid (Swedish pop group)
64	ABC- abstinence, be faithful, condoms,Active Body Control,airway, breathing, circulation (see CPR),Alcoholic Beverage Commission,alien big cat,always be careful,American Bird Conservancy,American-born Chinese,American Broadcasting Company,anti-lock brake controller,Associated British Corporation,Atanasoff-Berry Computer,Atlantic Baptist College,atomic, biological, chemical (see NBC),Australian Broadcasting Corporation
65	ABCA- American, British and Canadian Armies (originally),Army Bureau of Current Affairs
66	ABCS, (U.S.) Army Battle Command System
67	ABET, Accreditation Board for Engineering and Technology
68	ABFIST, Advanced Bradley Full Crew Interactive Skills Trainer
69	ABGI, Addington-Barker Group International
70	ABIN, Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
71	abk, Abkhaz language (ISO 639-2 code)
72	ABL, American Basketball League
73	ABLE, AirBorne Law Enforcement (police air support unit)
74	ABM, anti-ballistic missile,Asynchronous Balanced Mode,automated banking machine
75	ABMC, American Battle Monuments Commission
76	ABN, Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
77	ABPI, Association of the British Pharmaceutical Industry
78	ABRSM, Associated Board of the Royal Schools of Music
79	ABS- acrylonitrile butadiene styrene,anti-lock braking system
80	ABSTRIPS, abstraction-based STRIPS
81	ABV, Alcohol by volume
82	ABW, Aruba (ISO 3166 trigram)
83	aC, Attocoulomb
84	Ac, Actinium
85	AC1,Aircraftman 1st Class
86	AC2,Aircraftman 2nd Class
87	ACARS, Aircraft Communications Addressing and Reporting System
88	ACAS- Aboriginal Children's Advancement Society,Advisory, Conciliation and Arbitration Service
89	ACC- U.S. Air Combat Command,Air Component Commander,Alpine Club of Canada,Altocumulus castellanus,Area Control Center,Atlantic Coast Conference,Automatic climate control
90	ACCA- The Association of Chartered Certified Accountants,Automatic Cloud Cover Assessment
91	ACCAC, Awdurdod Cymwysterau, Cwricwlwm ac Asesu Cymru (Qualifications, Curriculum and Assessment Authority for Wales)
92	ACCD,American Coalition of Citizens with Disabilities
93	ACCS, Air Communications and Control Squadron
94	ACDA, Arms Control & Disarmament Agency
95	ACDC- Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
96	ACDT- Apple Certified Desktop Technician, Australian Central Daylight Time
97	ACE- Air Combat Emulator (computer game),Allied Command Europe,Armored Combat Earthmover,Automatic Computing Engine
98	ACF- Administration for Children and Families,American Car and Foundry,American Culinary Federation
99	ACHT, Average Call Hold Time
100	ACINT, Acoustic Intelligence
101	ACK, Acknowledge (telecommunications; cf. NAK)
102	ACL- Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
103	ACLJ, American Center for Law and Justice
104	ACLOS, Automatic CLOS (missile control system)
105	ACLS, American Council of Learned Societies
106	ACLU- American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
107	ACM,many, including Association for Computing Machinery; see entry
108	ACMC, (U.S.) Assistant Commandant of the Marine Corps
109	ACN- Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
110	ACNA, Anglican Church in North America
111	ACO, Airspace Control Order
112	ACOBA, Advisory Committee on Business Appointments
113	ACOG, American College of Obstetricians and Gynecologists
114	ACOM, (U.S.) Atlantic Command
115	ACORN, Association of Community Organizations for Reform Now
116	ACP- African, Caribbean and Pacific Group of States,Air Control Point
117	ACR, Advanced Concepts and Requirements
118	ACRI, African Crisis Initiative
119	ACRT, Advanced Concepts Research Tool simulator
120	ACS- Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
121	ACSC, Army Command and Staff College (various nations)
122	ACST, Australian Central Standard Time
123	ACST, American Cooperative School of Tunis
124	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
125	ACTD, Advanced Concept Technology Demonstration
126	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)
127	ACTU, Australian Council of Trade Unions
128	ACU, American Conservative Union
129	ACUF- BGN Advisory Committee on Undersea Features, American Conservative Union Foundation
130	ACV, Armoured Combat Vehicle
131	ADA, Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
132	ADAGE, Air Defense Air to Ground Engagement (simulation)
133	ADAP, AIDS Drug Assistance Program
134	ADAS,(a/i) Asiago-DLR Asteroid Survey
135	ADAT, Alesis Digital Audio Tape (recording format)
136	ADatP, Automated Data Processing
137	ADATS, Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
138	ADB, Asian Development Bank
139	ADC, Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
140	ADCTS, Advanced Distributed Combat Training System
141	ADD, Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
142	ADDIE, Analyze Design Develop Implement and Evaluate
143	ADDNS, Advanced Deployable Day/Night Simulation
144	ADF, Australian Defence Force,African Development Foundation
145	ADGB,Air Defence of Great Britain
146	ADHD, Attention-Deficit Hyperactivity Disorder
147	ADHS, Attention-Deficit Hyperactivity Syndrome
148	ADI, Acceptable/Allowable Daily Intake
149	ADIZ,(a/i) Air Defence Identification Zone
150	ADL, Anti-Defamation League
151	ADM, Administrative,,Admiral, and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
152	ADOA,(a/i) Air Defence Operations Area
153	ADP, Adenosine DiPhosphate,Army Doctrine Publication (UK, Canada, Australia),Automatic/Automated Data Processing
154	ADRG, Arc-second Raster Chart (ARC) Digitized Raster Graphics
155	ADS,(a/i) Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
156	ADSR, Attack, Decay, Sustain, Release (sound envelope specification)
157	ADT, Atlantic Daylight Time (UTC−3 hours)
158	ADTB, Army Doctrine and Training Bulletin
159	ADW, Air Defence Warning
160	ae, Avestan language (ISO 639-1 code)
161	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,(a/i) Arts & Entertainment Network, the original name for the U.S. TV channel now known as A&E Network
162	AED, United Arab Emirates dirham (ISO 4217 currency code)
163	AEDT, Australian Eastern Daylight Time
164	AEF, American Expeditionary Force
165	AEGIS, Airborne Early warning Ground environment Interface Segment (fake etymology)
166	AESR, Aeronautical Equipment Service Record
167	AEST, Australian Eastern Standard Time
168	aet, After extra time (Football)
169	AEW, Airborne Early Warning,Airborne Electronic Warfare
170	af, Afrikaans language (ISO 639-1 code)
171	aF, Attofarad
172	AF- Afghanistan (FIPS 10-4 country code; ISO 3166 digram), Air Force,As f*ck
173	AFAIC, As Far As I'm Concerned
174	AFAICT, As Far As I Can Tell
175	AFAIK, As Far As I Know
176	AFAIR, As Far As I Remember/Recall
177	AFATDS, Advanced Field Artillery Tactical Data System
178	AFC- American Football Conference,Asian Football Confederation
179	AFCEA, Armed Forces Communications and Electronics Association
180	AFDB, African Development Bank
181	AFES, Automatic Fire Extinguishing System
182	AFG, Afghanistan (ISO 3166 trigram)
183	AFIS- Automated Fingerprint Identification System,American Forces Information Service
184	AFIST, Abrams Full Crew Interactive Skills Trainer
185	AFJ, April Fool's Joke
186	AFK, Away From Keyboard (Internet chat abbreviation)
187	AFL- American Federation of Labor,American Football League — either the 1960s league that merged into the National Football League, or one of several other leagues of American football,Arena Football League,Australian Football League,AFL-CIO, American Federation of Labor,Congress of Industrial Organizations
188	AFLAC, American Family Life Assurance Company of Columbus
189	AFM, Army Field Manual (UK; the U.S. more frequently uses just FM),Atomic Force Microscope,Aviation Fleet Maintenance
190	AFN, Afghani (ISO 4217 currency code)
191	AFO, Association of Field Ornithologists
192	AFOSR, U.S. Air Force Office of Scientific Research
193	AFQT, Armed Forces Qualification Test
194	afr, Afrikaans language (ISO 639-2 code)
195	AFRC, Air Force Reserve Command
196	AFRL, Air Force Research Laboratory
197	AFROTC, Air Force Reserve Officer Training Corps
198	AFRRI,(i, U.S.) Armed Forces Radiobiology Research Institute
199	AFRTS, Armed Forces Radio and Television Service
200	AFS- Active Front Steering,Air Facility Sub-System,Amniotic Fluid-derived Stem cell,AFS&A or AFSA, U.S. Air Force Studies and Analysis
201	AFSC- U.S. Air Force Staff College (obsolete; replaced with JFSC),U.S. Air Force Systems Command
202	AFSCN, U.S. Air Force Satellite Control Network
203	AFSPC, Air Force Space Command
204	AFT,American Farmland Trust
205	AFV, armoured fighting vehicle
206	AFWA- Air Force Weather Agency,Association of Fish and Wildlife Agencies,AG[edit]
207	ag, Attogram
208	Ag, Silver (Latin argentum)
209	AGARD, Advisory Group for Aerospace Research and Development
210	AGARDograph, Advanced Guidance for Alliance Research and Development publication
211	AGASA, Akeno Giant Air Shower Array (cosmic ray detector)
212	AGB, Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
213	AGC- Apollo Guidance Computer,Automatic Gain Control
214	AGC, Adjutant General's Corps (British Army)
215	AGDC, Australian Game Developers' Conference
216	AGI, Auxiliary Group Intelligence
217	AGL, Above Ground Level
218	AGM, Annual General Meeting
219	AGN, Active Galactic Nucleus
220	AGO, Angola (ISO 3166 trigram)
221	AGP, Accelerated Graphics Port
222	AGRICOLA, Agriculture Online Access
223	AGS, Alaska Ground Station (LandSat)
224	AGTS, Advanced Gunnery Training System
225	AGU, American Geophysical Union
226	AGW, Autonomous Guided Weapon
227	aH, Attohenry
228	Ah, Ampere-hour
229	AH, Attack Helicopter
230	AHA, American Heart Association
231	AHCPR, Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
232	AHEC, Australian Health Ethics Committee
233	AHPCRC, Army High Performance Computing Research Center
234	AHQ,Air Headquarters
235	AHRQ, Agency for Healthcare Research and Quality
236	AHS, American Housing Survey
237	AI- Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence, Anguilla (ISO 3166 digram)
238	AIA- Aerospace Industries Association,American Institute of Architects, Anguilla (ISO 3166 trigram)
239	AIAA, American Institute of Aeronautics and Astronautics
240	AIC- African Independent Church,Animal Identification Coordinator
241	AICD, Australian Institute of Company Directors
242	AICMFP, And I Claim My Five Pounds
243	AID, U.S. Agency for International Development
244	AIDS, Acquired Immune Deficiency Syndrome
245	AIM,many, including AOL Instant Messenger, Australian Institute of Management; see entry
246	AIMP, Aurora Incremental Modernization Project
247	AIPAC, American Israel Public Affairs Committee
248	AIR, Aircraft Inventory Record
249	AIRFA, American Indian Religious Freedom Act
250	AIRS,(a/i) Aerometric Information Retrieval System (obsolete; replaced with AFS)
251	AIS- Australian Institute of Sport,Automatic Identification System
252	AISB, (British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
253	aJ, Attojoule
254	AJ, Azerbaijan (FIPS 10-4 country code)
255	Ajax, Asynchronous JavaScript And XML
256	AJD, Astronomical Julian day
257	AJP, Allied Joint Publication
258	AJPW, All Japan Pro Wrestling
259	ak, Akan languages (ISO 639-1 code)
260	aK, Attokelvin
261	AK, Alaska (postal symbol)
262	aka, Akan languages (ISO 639-2 code)
263	AKA, Above knee amputation (orthopaedic usage)
264	AKDT, Alaska Standard Daylight Saving Time (UTC−8 hours)
265	AKST, Alaska Standard Time (UTC−9 hours)
266	aL, Attolitre
267	Al, Aluminium
268	ALA, Åland Islands (ISO 3166 trigram)
269	ALAP, As Long/Late As Possible
270	ALARM, Air-Launched Anti-Radar Missile
271	ALB, Albania (ISO 3166 trigram)
272	ALD, Accounting Line Designator (nuclear weapon targeting)
273	ALERT, Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
274	ALF- Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
275	ALG, Algeria (IOC and FIFA trigram, but not ISO 3166)
276	ALGOL, ALGOrithmic Language
277	ALL, Albanian lek (ISO 4217 currency code)
278	ALOA, Associated Locksmiths of America, Inc.
279	ALOC- Air Lines Of Communication, Average Length of Calls
280	ALPA, Air Line Pilots Association
281	ALS, Amyotrophic Lateral Sclerosis,Automatic Landing System
282	ALSHS, Abraham Low Self-Help Systems
283	ALSP, Aggregate Level Simulation Protocol
284	ALTE, Association of Language Testers in Europe
285	ALTACS, Automated decision Logic Tactical Air Combat Simulation
286	am- Amharic language (ISO 639-1 code),Attometre
287	Am, Americium
288	AM-many, including Amplitude Modulation and Ante Meridiem; see entry, Armenia (FIPS 10-4 country code; ISO 3166 digram)
289	AM1,Airman 1st class
290	AMA- American Medical Association,Australian Medical Association
291	AMAPS, Aircraft, Missile, Avionics Performance Simulation
292	AMC- Adaptive modulation and coding (digital communications),U.S. Air Mobility Command,American Motors Corporation,American Movie Classics (TV network; now known simply by the initials),U.S. Army Materiel Command
293	AMCB, U.S. Army/Marine Corps Board
294	AMD- Advanced Micro Devices,Age-related Macular Degeneration, Armenian dram (ISO 4217 currency code)
295	AMF, Afghan Military Force
296	AMFR- Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
297	AMFRS- Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
298	amh, Amharic language (ISO 639-2 code)
299	AML, Acute Myeloid Leukaemia
300	AMLCD, Active Matrix Liquid Crystal Display
301	AMLO- Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
302	AMO, Atlantic Multidecadal Oscillation
303	AMOLED, Active-matrix organic light-emitting diode
304	AMOS- Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
305	AMP- Adenosine MonoPhosphate,Automated Mission Planner
306	AMRAAM, Advanced Medium-Range Air-to-Air Missile
307	AMRDEC, U.S. Aviation & Missile Research, Development, & Engineering Center
308	AMS- Agriculture Marketing Service,American Mathematical Society
309	AMSAA,(i/a) U.S. Army Materiel Systems Analysis Activity
310	AMSO,(i/a) U.S. Army Model and Simulation Office
311	AMSU,Advanced Microwave Sounding Unit
312	AMTE, UK Admiralty Marine Technology Establishment (1977-1984)
313	an, Aragonese language (ISO 639-1 code)
314	aN, Attonewton
315	AN- Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
316	ANA- Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body, Australian National Airways,Australian Natives' Association
317	ANC, African National Congress
318	AND, Andorra (ISO 3166 trigram)
319	ANFO, Ammonium nitrate/fuel oil (explosive)
320	ANG- Air National Guard, Angola (IOC and FIFA trigram, but not ISO 3166), Netherlands Antillian guilder (ISO 4217 currency code)
321	ANGLiCo, Air/Naval Gunfire Liaison Company
322	ANL, Argonne National Laboratory
323	ANM, Acoustic Noise Monitor
324	ANOVA, ANalysis Of VAriance
325	ANS, Applied and Natural Sciences
326	ANSI, American National Standards Institute
327	ANTM, America's Next Top Model
328	ANT- Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram, but not ISO 3166 or FIFA)
329	ANTY,Acronyms, No Thank You
330	ANWR, Arctic National Wildlife Refuge /ˈænwɑr/
331	ANZ, Australia and New Zealand Banking Group
332	ANZAC, Australian and New Zealand Army Corps
333	AO, Angola (FIPS 10-4 country code; ISO 3166 digram), Approach Officer (submarine),Area of Operations
334	AOA, Air Officer in charge of Administration,Argonne National Laboratory, Angolan kwanza (ISO 4217 currency code), Award Of Arms (heraldry)
335	AOC, Air Operations Centre,Air Officer Commanding
336	AOD, Adrenalin O.D. (punk rock band)
337	AOI, Angle Of Incidence Arab Organization for Industrialization
338	AOL, America OnLine
339	AOR, Area of Responsibility
340	AOSTH, Adventures of Sonic the Hedgehog
341	AOTS, Attack of the Show!
342	AOU, American Ornithologists' Union
343	AP- Advanced Placement,Air Publication, Andhra Pradesh (Indian state code), Armed Forces Pacific (postal symbol), Associated Press,Auto Pilot
344	APA -
345	APB, All Points Bulletin (police jargon)
346	APC- Armoured Personnel Carrier,Armour Piercing Capped (ammunition)
347	APEC, Asia Pacific Economic Cooperation
348	APCNR, Armour-Piercing, Composite Non-Rigid (ammunition)
349	APCR, Armour-Piercing, Composite Rigid (ammunition)
350	APDS, Armour-Piercing, Discarding-Sabot (ammunition)
351	APEDS, AMSAA Performance Estimates Data System
352	APEX, Applied Physics Express
353	APFSDS, Armour-Piercing, Fin-Stabilised, Discarding Sabot (ammunition)
354	APHA, American Public Health Association
355	APHE, Armour-Piercing, High Explosive (ammunition)
356	APHIS, Animal and Plant Health Inspection Service
357	API, Application Programming Interface
358	APL- A Programming Language,Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
359	APM, Advanced Power Management
360	APOD, Aerial Port (Airport) Of Debarkation
361	APOE, Aerial Port (Airport) Of Embarkation
362	APOLLO, Apache Point Observatory Lunar Laser-ranging Operation
363	APP, Allied Procedural Publication
364	APR, Annual Percentage Rate
365	APS- Advanced Photo System (cf. APS-C, an image sensor format based on the size of the original APS film frame),American Physical Society,Antiphospholipid Antibody Syndrome,AQ[edit]
366	AQ- AdventureQuest, American Samoa (FIPS 10-4 territory code),Antarctica (ISO 3166 digram), Automatic qualifier, a term used by U.S. sports media from 1998 to 2013 to refer to the six conferences whose champions automatically entered the now-defunct Bowl Championship Series of college football
367	AQIM, Al-Qaeda in the Islamic Maghreb
368	ar, Arabic language (ISO 639-1 code)
369	Ar, Argon
370	AR, Argentina (FIPS 10-4 country code; ISO 3166 digram),Arkansas (postal symbol),Armour, Arunachal Pradesh (Indian state code)
371	ara, Arabic language (ISO 639-2 code)
372	ARAG, Advanced Research and Assessment Group
373	ARB, Administrative Review Board
374	ARBA,(a/i) Army Review Boards Agency
375	ARC, Arc-second Raster Chart,Appalachian Regional Commission
376	ARCA, Automobile Racing Club of America
377	ARCENT, United States Army Central Command
378	ARDA, Advanced Research and Development Activity (became DTO 2006)
379	ARE, UK Admiralty Research Establishment (-1991), United Arab Emirates (ISO 3166 trigram)
380	ARF, ASEAN Regional Forum
381	arg, Aragonese language (ISO 639-2 code)
382	ARG, Argentina (ISO 3166 trigram)
383	ARH, Armed Reconnaissance Helicopter
384	ARI, Acute Respiratory Infection,U.S. Army Research Institute for the Behavioral and Social Sciences
385	ARL, UK Admiralty Research Laboratory (1921-1977),U.S. Army Research Laboratory,UIUC Aviation Research Laboratory
386	ARM, Anti-Radiation Missile,Adjustable-rate mortgage, Armenia (ISO 3166 trigram)
387	ARNet, Acquisition Reform Network
388	ARP, Address Resolution Protocol,Applied Research Programme
389	ARPA, Advanced Research Projects Agency
390	ARRC, ACE Rapid Reaction Corps
391	ARRF, Allied Rapid Reaction Force
392	ARRL, American Radio Relay League
393	ARS, Agricultural Research Service, Argentine peso (ISO 4217 currency code)
394	ARSC, Arctic Region Supercomputing Center
395	ARSPACE, U.S. Army Space Command
396	ART, Adaptive Resonance Theory,Anti-Retroviral Therapy
397	ARTCC, Air Route Traffic Control Center
398	as, Adult swim, Assamese language (ISO 639-1 code),Attosecond
399	aS, Attosiemens
400	As, Arsenic
401	AS, American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
402	AS, ActionScript
403	ASA, AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
404	ASAP, As Soon As Possible
405	ASARS, Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
406	ASB, Associated Student Body,Alternative Service Book (Church of England)
407	ASBO, Anti-Social Behaviour Order
408	ASCAP, American Society of Composers, Authors, and Publishers
409	ASCC, Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
410	ASCIET, All Services Combat Identification Evaluation Team
411	ASCII, American Standard Code for Information Interchange
412	ASD, (U.S.) Assistant Secretary of Defense,autism spectrum disorder
413	ASDIC, Allied Submarine Detection Investigation Committee (Sonar)
414	ASEAN, Association of Southeast Asian Nations
415	ASFAR, Americans for a Society Free of Age Restrictions
416	ASG, Area Support Group
417	ASIC, Australian Securities and Investments Commission, Aviation Security Identification Card
418	ASIO, Australian Security Intelligence Organisation, Audio stream input output
419	ASIP, Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
420	asm, Assamese language (ISO 639-2 code)
421	ASM, Air-to-Surface Missile, American Samoa (ISO 3166 trigram), American Society for Metals, American Society for Microbiology
422	ASMB, American Society for Matrix Biology,Adult Swim Message Board
423	ASME, American Society of Mechanical Engineers,American Society of Magazine ors
424	ASN, Associate of Science in Nursing
425	ASOC,(a/i) 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
426	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
427	ASPI, Australian Strategic Policy Institute
428	ASR, Alkali-silica reaction,Anti Slip Regulation
429	ASRAAM, Advanced Short-Range Air-to-Air Missile
430	ASSC, Association for the Scientific Study of Consciousness
431	AST, Atlantic Standard Time (UTC−4 hours)
432	ASTIA, Armed Services Technical Information Agency
433	ASTM, American Society for Testing and Materials
434	ASTREA, Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
435	ASUW, AntiSUrface Warfare
436	ASVAB,Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
437	ASW, AntiSubmarine Warfare
438	ASWORG, (U.S.) AntiSubmarine Warfare Operations Research Group
439	ASX, Advanced Stream Redirector,Australian Securities Exchange
440	aT, Attotesla
441	At, Astatine
442	AT, Anti-Tank, Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram), Advanced Technology (IBM Personal Computer/AT)
443	ATA, Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array, Antarctica (ISO 3166 trigram)
444	ATAC, Air Transportable Acoustic Communications
445	ATACMS, Army TACtical Missile System
446	ATAPI, Advanced Technology Attachment Packet Interface
447	ATAS, Air-To-Air Stinger (missile)
448	ATAT, Aiken Tactical Airsoft Team / Star Wars vehicle
449	ATB, Active Time Battle, British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
450	ATC, Air Traffic Control,Air Training Corps,U.S. Air Transport Command (1942-1948)- Athletic Trainer, Certified (www.nata.org)
451	ATCCIS, Army Tactical Command and Control Information System
452	ATESS, Aerospace and Telecommunications Engineering Support Squadron
453	ATG, Antigua and Barbuda (ISO 3166 and FIFA trigram)
454	ATGM, Anti-Tank Guided Missile
455	ATGW, Anti-Tank Guided Weapon
456	ATI, Allied Telesyn International, Inc., Array Technologies Incorporated. (ATI Technologies)
457	Atisbo,a Local Government Area in Nigeria named for constituent communities (Ago-Are, Tede, Irawo, Sabe, Baasi, Ofiki and Owo)
458	ATK, Attack
459	ATL, Atlanta, Georgia, the largest city and capital of Georgia
460	ATLAS, All-Terrain Lifter Army System, Assessment Tool for LAnd Systems
461	ATM, Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
462	ATN, Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
463	ATO, Air Tasking Order,Australian Taxation Office
464	ATP, Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
465	ATSD, (U.S.) Assistant Secretary of Defense
466	ATSDR, Agency for Toxic Substances and Disease Registry
467	ATV, All-Terrain Vehicle
468	ATWA, Air, Trees, Water, Animals
469	Au, Gold (Latin Aurum)
470	AU, African Union (was OAU before 2000),American University, Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
471	AUD, Australian dollar (ISO 4217 currency code)
472	AUS, Australia (ISO 3166 trigram)
473	AUSCANNZUKUS, Australia, Canada, New Zealand, United Kingdom, United States (security designation)
474	Auslan, Australian Sign Language
475	AUT, Austria (ISO 3166 trigram)
476	AUTL, Army Universal Task List
477	av, Avar language (ISO 639-1 code)
478	aV, Attovolt
479	Av, Aperture value (photographic mode)
480	AV- Anguilla (FIPS 10-4 territory code), Audio-Visual, Aviation
481	ava, Avar language (ISO 639-2 code)
482	AVA, American Viticultural Area
483	AVB, Audio Video Bridging
484	AVDLR, Aviation Depot Level Repair
485	ave, Avestan language (ISO 639-2 code)
486	AVGP, Armoured Vehicle, General Purpose
487	AVI, Audio Video Interleave
488	AVIM, Aviation Intermediate Maintenance
489	AVLB, Armoured Vehicle Launched Body
490	AVM- Air Vice-Marshal, Arteriovenous malformation
491	AVO, Apprehended Violence Order
492	AVP, Arubaanse Volkspartij
493	AVP, Association of Volleyball Professionals
494	AVRE, Armoured Vehicle Royal Engineers
495	AVTB- Armoured Vehicle Test Bed, Aviation Test Bed
496	AVUM, Aviation Unit Maintenance
497	AVVO, Acute Vaginal Venereal Outbreak
498	aW, Attowatt
499	AW, Aruba (ISO 3166 digram)
500	AWA, American Wrestling Association
501	AWACS, Airborne Warning And Control System
502	AWC, Air Warfare Centre
503	AWD,many, including All Wheel Drive; see entry
504	AWE,(i/a) Advanced Warfighting Experiment
505	AWG, Aruban guilder (ISO 4217 currency code)
506	AWOL, Absent Without Official Leave / Absent WithOut Leave (military jargon)
507	AWP, Awaiting Parts (SM&R code)
508	AWSIM, Air Warfare SIMulation
509	AWST, Australian Western Standard Time
510	AWW, Above Water Warfare
511	AX, Åland Islands (ISO 3166 digram)
512	AXP, Ambulance eXchange Point
513	ay, Aymara language (ISO 639-1 code)
514	AY, Antarctica (FIPS 10-4 territory code)
515	AYBABTU, All Your Base Are Belong To Us
516	aym, Aymara language (ISO 639-2 code)
517	AYU, As Yet Unknown
518	az, Azerbaijani language (ISO 639-1 code)
519	AZ- Arizona (postal symbol),Azerbaijan (ISO 3166 digram), Alkmaar Zaanstreek (Dutch football club)
520	aze, Azerbaijani language (ISO 639-2 code)
521	AZE, Azerbaijan (ISO 3166 trigram)
522	AZN, Azerbaijani manat (ISO 4217 currency code)
523	AZUR, Actions en zone urbaine (French, Urban Operations)
524	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 - (a/i) 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]
525	BB- Barbados (ISO 3166 digram; FIPS 10-4 country code), Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
526	BBB- Better Business Bureau,Blood-brain barrier
527	BBC- Breeding Bird Census,British Broadcasting Corporation, Bumper to Back of Cab (trucking measurement)
528	BBD- Barbadian dollar (ISO 4217 currency code), Bowel Bladder Dysfunction
529	BBL- Be Back Later,Bird Banding Laboratory,British Basketball League,BBN - Bolt, Beranek and Newman,BBQ - Barbecue[1]
530	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)
531	BBYO,B'nai B'rith Youth Organization
532	BC- Before Christ,Blind Copy (in emailers),Boston College, Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
533	BCA- Bachelor of Computer Application,Black Coaches & Administrators,BCC - Blind Carbon Copy
534	BCCI- Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD - Binary-Coded Decimal
535	BCS- Bachelor of Computer Science,Bardeen, Cooper, and Schrieffer superconduction theory,Bowl Championship Series (US college football),BCT - Brigade Combat Team,BD[edit],BD - Bangladesh (ISO 3166 digram) - Bermuda (FIPS 10-4 territory code),BDA - British Dental Association,BDD - Body Dysmorphic Disorder - British Defence Doctrine,Bde - Brigade,BDFL - Benevolent Dictator For Life,BDI - Burundi (ISO 3166 trigram),BDNF - Brain-Derived Neurotrophic Factor,BDO - Battle Dress Overgarment,BDOS - Basic Disk Operating System; part of CP/M,BDS -  - Bachelor of Dental Surgery,BDSM - Bondage and Discipline, Domination and Submission, Sadism and Masochism,BDT - Bangladeshi taka (ISO 4217 currency code) - Bureau de développement des télécommunications (Telecommunication Development Bureau, became ITU-D),BDTA - British Dental Trade Association,BDU - Battle-Dress Uniform,BE[edit],be - Belarusian language (ISO 639-1 code),Be - Beryllium,BE - Belgium (FIPS 10-4 country code; ISO 3166 digram)
536	BEA- Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel - Belarusian language (ISO 639-2 code),BEL - Belgium (ISO 3166 trigram),BEM - British Empire Medal - Bug-Eyed Monster,ben - Bengali language (ISO 639-2 code),BEN - Benin (ISO 3166 trigram),BEO - Banquet Event Order,BERC - Business Environmental Resource Center,BER - Bit Error Rate
537	BH- Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code),BHD - Bahraini dinar (ISO 4217 currency code),BHR - Bahrain (ISO 3166 trigram)
538	BNF- Backus-Naur Form (computing),British National Formulary,BNICE - Biological, Nuclear, Incendiary, Chemical, and Explosive Agents
539	BNP- British National Party,Banque Nationale de Paris, a predecessor to today's BNP Paribas,BNS - Bank of Nova Scotia,BNSF - (i/s) Burlington Northern Santa Fe (also AAR reporting mark),BO[edit],bo - Tibetan language (ISO 639-1 code)
540	BO- Back Orifice, Belarus (FIPS 10-4 country code), Biarritz Olympique (French rugby union club), Bolivia (ISO 3166 digram), Body odor,BO2k - Back Orifice 2000,BOAC - British Overseas Airways Corporation (predecessor of British Airways)
541	BoAML,Bank of America Merrill Lynch
542	BOC- British Orthodontic Society,British Oxygen Company,BÖC - Blue Öyster Cult,bod - Tibetan language (ISO 639-2 code),BOD - Biochemical Oxygen Demand,BODMAS - Brackets, Orders, Division, Multiplication, Addition, Subtraction,BOFH - Bastard Operator From Hell,BOGA - Bend Over and Grab Ankles,BOGOF - Buy One, Get One Free
543	BOGs, Bunch of Guys
544	BOI- Balance Of Investment,Basis Of Issue,BOL - Bolivia (ISO 3166 trigram)
545	BOM- Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting,BOP - Balance of Payments,BOPB - Biarritz Olympique Pays Basque (the complete name of the rugby club),BOPD - Barrel of Oil Per Day
546	BOQ- Bill Of Quotations,Bachelor Officers' Quarters,Bank Of Queensland,bos - Bosnian language (ISO 639-2 code),BOS - Battlefield Operating System
547	BOT- Balance of Trade, Botswana (IOC and FIFA trigram, but not ISO 3166), Build Operate Transfer, Bank of Thailand,BP[edit]
548	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
549	BPV- Battlefield Planning Visualization,Bovine papillomavirus,BQ[edit]
550	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),BR[edit],br - Breton language (ISO 639-1 code),Br - Bromine
551	BR- Brazil (ISO 3166 digram; FIPS 10-4 country code) - Bihar (Indian state code), British Rail,Break Ranks (marching band term),BRA - Brazil (ISO 3166 trigram),BRAG - Bicycle Ride Across Georgia,BRASS - Breathe, Relax, Aim, Sight, Squeeze (Acronym for using a rifle)
552	BRN- Bahrain (IOC trigram, but not FIFA or ISO 3166), Brunei (ISO 3166 trigram),BRSB - Battlefield Reasoning System Brianna,BRU - Brunei (IOC and FIFA trigram, but not ISO 3166),BS[edit],bs - Bosnian language (ISO 639-1 code)
553	BS- The Bahamas (ISO 3166 digram),Bassas da India (FIPS 10-4 territory code),Bachelor of Science degree,British subject
554	Bullshit-
555	BSA- Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
556	BSatCoP,Benjamin Sniddlegrass and the Cauldron of Penguins
557	BSD- Bahamian dollar (ISO 4217 currency code), Berkeley Software Distribution (distinct from BSoD)
558	BSE, Bovine Spongiform Encephalopathy, better known as mad cow disease
559	BSNL-Bharat Sanchar Nigam Limited, Bachelor of Science in Nursing,BSoD - Blue Screen of Death (distinct from BSD)
560	BSP- Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread), Business-sponsored,Bone sialoprotein
561	BST- Binary search tree,Blended Sales Tax, Bovine somatotropin, British Summer Time,BSW - British Standard Whitworth (screw thread),BSX - Bendigo Stock Exchange,BT[edit]
562	Bt- Baronet,Bacillus thuringiensis
563	c, Centi
564	C, Carbon,Coulomb,One Hundred (in Roman numerals)
565	c2c, the British rail company formerly known as LTS Rail
566	C2C, Consumer-To-Consumer electronic commerce,Cam-To-Cam internet chat
567	ca, Catalan language (ISO 639-1 code)
568	Ca, Calcium
569	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
570	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
571	CAAT- or Campaign Against Arms Trade,Center for Alternatives to Animal Testing
572	CAC- California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier,CACM Central American Common Market
573	CACM, Communications of the ACM
574	CAD- Canadian dollar (ISO 4217 currency code), Computer-Aided Design,Computer-Aided Dispatch,Cpplint Anxiety Disorder, Condition suffered by software developers who worry about whether they've left any whitespace on the end of a line
575	CADCAM, Computer-Aided Design/Computer-Aided Manufacturing
576	CADPAT, CAnadian Disruptive PATtern
577	CADMID, Concept, Assessment, Demonstration, Manufacture, In service, Disposal (life cycle mnemonic)
578	CAE- Canadian Aviation Electronics (originally),Certificate in Advanced English
579	CAEn,(i/a) Close Action Engagement (constructive simulation)
580	CAF- Central African Republic (ISO 3166 trigram), Confederation of African Football (or French Confédération Africaine de Football)
581	CAFAD, Combined Arms For Air Defence
582	CAFDE- Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
583	CAFE, Corporate Average Fuel Economy standard
584	CAI, Computer Assisted Instruction
585	CAIR, Council on American-Islamic Relations
586	CALABARZON, A region in the Philippines: CAvite, LAguna, BAtangas, Rizal, queZON
587	CALL, (U.S.) Center for Army Lessons Learned
588	CALM, Communications, Air-interface, Long and Medium range
589	CalPERS, California Public Employees' Retirement System
590	Caltrans, California Department of Transpotation
591	CAM- Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
592	CAMRA, CAMpaign for Real Ale
593	CAN, Canada (ISO 3166 trigram)
594	CANA, Convulsive Antidote, Nerve Agent
595	CANDU, CANada Deuterium Uranium (nuclear reactor design)
596	Canola, Canadian oil, low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
597	CAP- Combat Air Patrol,Civil Air Patrol,Common [Operating/Operational] Air Picture,Crisis Action Procedures,Common Agricultural Policy (European Union)
598	CAPES- CAPability Evaluation System, Combined Arms Planning and Execution System
599	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)
600	CARMONETTE, Computerized Monte Carlo Simulation
601	CARP, Computed Air Release Point
602	CART, Championship Auto Racing Teams (now defunct)
603	CAS- Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
604	CASA, Civil Aviation Safety Authority
605	CASE- Cellular ammunition storage equipment,Computer-Aided Software Engineering
606	CASS, Command Activated Sonobuoy System
607	CASTFOREM, Combined Arms and Support Task FORce Evaluation Model
608	CASTOR, Canadian Automatic Small Telescopes for Orbital Research
609	cat, Catalan language (ISO 639-2 code)
610	CAT- Community Acceptance Testing,Computer-Assisted (or Axial) Tomography
611	CATK, Counterattack
612	CATS, Computer Active Technology Suspension
613	CATT,(a/i) Combined Arms Tactical Trainer
614	CAV, Cavalry
615	CAW, Canadian Auto Workers (trade union)
616	CB- Citizens' Band radio, Cambodia (FIPS 10-4 country code)
617	CBC- Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
618	CBE- Commander of the Order of the British Empire,Cab Beside Engine (see truck)
619	CBGB, Country, Blue Grass, and Blues (former New York City nightclub)
620	CBLA, Comparative bullet lead analysis
621	CBN,CardsApp Brand Number
622	CBM,many, including Canadian Baptist Ministries and Commodore Business Machines; see entry
623	CBML, Coalition Battle Management Language
624	CBOL, Consortium for the Barcode of Life
625	CBOT, Chicago Board of Trade
626	CBR, Case-Based Reasoning
627	CBRN, Chemical, Biological, Radiological, or Nuclear (weapon or event)
628	CBRNE, Chemical, Biological, Radiological, Nuclear or [high-yield] Explosive (weapon or event)
629	CBS- Columbia Broadcasting System,Corps Battle Simulation
630	CBT- Cognitive Behaviour Therapy, Combat
631	CBUS, Columbus, Ohio
632	CC,many, including carbon copy; see entry
633	CCA, Counter Command Activity
634	CCC- Canterbury Clothing Company,Civilian Conservation Corps (U.S., 1930s and 1940s),Corpus Christi College, Oxford
635	CCCP- Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik, Russian Союз Советских Социалистических Республик, Union of Soviet Socialist Republics)
636	CCD- Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
637	CCF, Cartoon Cartoon Fridays
638	CCG- Canadian Coast Guard,Collectible Card Game
639	CCGC- Canadian Coast Guard Cutter,Canadian Coast Guard College
640	CCGH, Canadian Coast Guard Hovercraft
641	CCGS- Canadian Coast Guard Ship,Christ Church Grammar School
642	CCH, Computer-Controlled Hostile
643	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)
644	CCII- Command and Control Information Infrastructure,Community Capital Investment Initiative
645	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
646	CCIT, Comité consultatif international télégraphique (French for International Telegraph Consultative Committee, merged with the CCIF in 1956 to form the CCITT)
647	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)
648	CCK- Cholecystokinin, Cocos (Keeling) Islands (ISO 3166 trigram)
649	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
650	CCOC- Canadian Children's Opera Chorus,Crosley Car Owners Club
651	CCOP, Coalition Common Operating/Operational Picture
652	CCP- Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
653	CCPA, Consumer Credit Protection Act
654	CCR, Creedence Clearwater Revival
655	CCRAp, Canadian Conservative Reform Alliance party
656	CCRP, Command and Control Research Program
657	CCRTS, Command and Control Research and Technology Symposium
658	CCSCS, Coordinadora de Centrales Sindicales del Cono Sur
659	CCSCS, Consultative Committee for Space Data Systems
660	CCSK, Cyclic Code Shift Keying
661	CCT, Current Commitments Team
662	CCTT, Close Combat Tactical Trainer
663	cd, Candela
664	Cd, Cadmium
665	CD,many, including Compact Disc; see entry
666	CD1, Cluster of Differentiation 1 (a small gene family)
667	CDA, UK Centre for Defence Analysis
668	CDC- Centers for Disease Control and Prevention (originally (U.S.) Communicable Disease Center),Control Data Corporation,Cult of the Dead Cow
669	CDD, Capabilities Development Document
670	CDE, Chemical Defence Equipment
671	CDEC, U.S. Combat Development Experimentation Center
672	CDF- California Department of Forestry [and Fire Protection],Common Data Format, Democratic Republic of Congo franc congolais (ISO 4217 currency code)
673	CDipAF, Certified Diploma in Accounting and Finance
674	CDL, Commercial driver's license
675	CDM- Clean Development Mechanism (Kyoto protocol),Cold Dark Matter (astronomy)
676	CDMA, Code Division Multiple Access
677	CDMSII, Cryogenic Dark Matter Search II
678	Cdr, Commander
679	CDS- Chief of the Defence Staff,Credit default swap
680	Cdt, Commandant
681	CDT, Central Daylight Time (UTC−5 hours)
682	ce, Chechen language (ISO 639-1 code)
683	Ce, Cerium
684	CE,many, including Christian/Common Era (cf. AD); see entry
685	CEA, Campaign Effectiveness Analysis
686	CECOM, U.S. Army Communications and Electronics Command
687	CEI, Competitive Enterprise Institute
688	CENTCOM, United States Central Command
689	CENTO, Central Treaty Organization (Baghdad Pact)
690	CEO, Chief Executive Officer
691	CEP, Circular Error Probable
692	CERCLA, U.S. Comprehensive Environmental Response, Compensation, and Liability Act (Superfund)
693	CERDEC,U.S. Communications-Electronics Research, Development and Engineering Center
694	CERT, Computer Emergency Response Team
695	ces, Czech language (ISO 639-2 code)
696	CESS, Centre for Earth Science Studies (India)
697	CEWC,(a/i) Council for Education in World Citizenship
698	Cf, Californium
699	CF- Canadian Forces, Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
700	CFA- Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
701	CFAR- Christine's,Federal Acquisition Regulation
702	CFC- ChloroFluoroCarbon,Canadian Fish Company
703	CFES, Continuous Flow Electrophoresis System
704	CFFZ, Call For Fire Zone
705	CFG- Context-free grammar,Control flow graph
706	CFHT, Canada-France-Hawaii Telescope
707	CFI, Center for Inquiry (CSICOP)
708	CFL- Canadian Football League,Co-ordinated Fire Line
709	CFLCC, Coalition Forces Land Component Command
710	CFM, Certified Facilities Manager [(IFMA)]http://www.ifma.org/
711	CFO, Chief Financial Officer
712	CFP- Call for papers,College Football Playoff,Common Fisheries Policy (EU)
713	CFRP, Carbon fibre reinforced plastic
714	CFS, Chronic Fatigue Syndrome
715	CFSP, Common Foreign and Security Policy
716	CFU, Colony Forming Unit in Microbiology
717	CFV, Cavalry Fighting Vehicle
718	CFZ, Critical Friendly Zone
719	CG, Client Group,Computer Graphics,Controls Group, Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
720	CGDC, Computer Game Developers Conference (became GDC in 1998)
721	CGF, Computer-Generated Forces (Simulation)
722	CGH, Comparative Genomic Hybridisation
723	CGIG, Cross-Government Implementation Group
724	CGM, Computer Graphics Metafile
725	CGO, Republic of the Congo (IOC and FIFA trigram, but not ISO 3166)
726	CGS, Chief of the General Staff
727	CGT, Capital Gains Tax
728	ch, Chamorro language (ISO 639-1 code)
729	ch,ch(L) is used to denote the Chern character of a line bundle
730	CH, Chieftain tank, China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
731	cha, Chamorro language (ISO 639-2 code)
732	CHAMPUS, (U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
733	CHAOS, Cambridge Heart Anti-Oxidant Study
734	CHAPS, Clearing House Automated Payment System
735	CHDK, Canon Hack Development Kit (Canon camera firmware hack)
736	che, Chechen language (ISO 639-2 code)
737	CHE, Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
738	CHF, Swiss franc (ISO 4217 currency code)
739	CHI, Columbia Helicopters, Inc
740	CHI, Computer-Human Interaction
741	CHiP, California Highway Patrol
742	CHIPS, Cosmic Hot Interstellar Plasma Spectrometer
743	CHL, Chile (ISO 3166 trigram)
744	CHLA, Core Historical Literature of Agriculture
745	CHN, China (ISO 3166 trigram)
746	CHOGM, Commonwealth Heads of Government Meeting
747	CHP, California Highway Patrol,Combined Heat and Power
748	CHPSO, California Hospital Patient Safety Organization
749	CHS, Combat Health Support
750	CHT, Certified Hand Therapist
751	chu, Old Church Slavonic language (ISO 639-2 code)
752	chv, Chuvash language (ISO 639-2 code)
753	CREN, Christian Real Estate Network Real Estate Association
754	Ci, Curie
755	CI- Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram), Counter-Intelligence,101 (in Roman numerals)
756	CIA- Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
757	CIAO- Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
758	CIB, Complete In Box (Internet auction/trading listings)
759	CIBC, Canadian Imperial Bank of Commerce
760	CID- Combat Identification, Criminal Investigation Division,Criminal Investigations Department
761	CID,Certified Interior Designer,A Certified Interior Designer (CID) licensed in New York (USA) plans, designs, supervises and/or consults on various aspects of interior spaces.
762	CIEF, Comité international d'enregistrement des fréquences (International Frequency Registration Board)
763	CIF, Cost, Insurance, and Freight (Paid) (shipping)
764	CIMIC, Civil-Military Co-operation
765	CINC, Commander in Chief
766	CINEOS, Campo Imperatore Near-Earth Object Survey
767	CIO- Chief information officer,Congress of Industrial Organizations
768	CIP, Combat Identification Panel
769	CIPE, (European) Centre for International Political Economy
770	CIR, (Commander's) Critical Information Requirements
771	CIR, Corotating Interaction Region
772	CIS- Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
773	CISA, (U.S.) C4I Integration Support Activity
774	CISB, Complete In Sealed Box (Internet auction/trading listings)
775	CISPR, Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
776	CISSP, Certified Information Systems Security Professional
777	CITS, Combat Identification Training System
778	CIV, Côte d'Ivoire (ISO 3166 trigram)
779	CIVETS, Colombia, Indonesia, Vietnam, Egypt, Turkey, South Africa (economics)
780	CIVPOP, Civilian Population
781	CIWS, Close-In Weapon System
782	CHRS,Canadian Heart Rhythm Society
783	CJ, Cayman Islands (FIPS 10-4 country code), Criminal Justice
784	CJC, Canadian Jewish Congress,Cold Junction Compensation
785	CJD, Chronological Julian Day,Creutzfeldt-Jakob Disease
786	CJCS, Chairman of the Joint Chiefs of Staff
787	CJO, Chief of Joint Operations
788	CJTF, Combined Joint Task Force
789	CK, Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
790	CKA, commonly known as, Canada Kicks Ass
791	CKND,Codename: Kids Next Door
792	Cl, Chlorine
793	CL, Chile (ISO 3166 digram), Co-ordination Line,One Hundred and Fifty (in Roman numerals)
794	CLA, Clutterers Anonymous
795	CLEC, Competitive Local Exchange Carrier
796	CLEMARS, California Law Enforcement Mutual Aid Radio System
797	CLI, Command Line Interface/Interpreter
798	CLIC, Compact LInear Collider
799	CLO, Cornell Lab of Ornithology
800	CLOB, Character Large OBject
801	CLOS, Command to Line-Of-Sight (missile control system)
802	CLOS, Common Lisp Object System
803	CLP, Chilean peso (ISO 4217 currency code), Common [Operating/Operational] Land Picture
804	CLPFC, CentroLateral PreFrontal Cortex
805	CLRP, College Loan Repayment Program
806	Cm, Curium
807	CM- Cameroon (FIPS 10-4 country code; ISO 3166 digram), Cruise Missile, Nine Hundred (in Roman numerals)
808	CMA- U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
809	CMB, Cosmic Microwave Background
810	CMBR, Cosmic Microwave Background Radiation
811	CME, Coronal Mass Ejection (usually Sun)
812	CMHC, Canada Mortgage and Housing Corporation
813	CMIIAW, Correct me if I am wrong
814	CMIS- Content Management Interoperability Services,Common management information service
815	CMJ, Christopher Martin-Jenkins (BBC sports commentator)
816	CML- Chemical, Chronic Myelogenous Leukemia (formerly Chronic Myeloid Leukemia)
817	CMM, Capability Maturity Model
818	CMMC, Corps Materiel Management Centre
819	CMML- Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
820	CMO, Civil-Military Operations
821	CMOC, Civil-Military Operations Centre
822	CMOS- Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
823	CMP, Common [Operating/Operational] Maritime Picture
824	CMP, Canadian Military Pattern truck (World War II)
825	CMPD, Chronic Myeloproliferative Disease
826	CMPD, Charlotte Mecklenburg Police Department
827	CMR- Cameroon (ISO 3166 trigram), Coaxial Main Rotors (helicopter type)
828	CMS- Centers for Medicare and Medicaid Services,The Chicago Manual of Style
829	CMT, Country Music Television
830	CMU- Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
831	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)
832	CMYK, Cyan Magenta Yellow Key/blacK (colour model)
833	CN-(i/s) Canadian National (railway; also the AAR reporting mark for said company), China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
834	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
835	CNBC,(a/i) Consumer News and Business Channel
836	CND- Campaign for Nuclear Disarmament,Computer Network Defence
837	CNE- Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
838	CNF, Cost and Freight
839	CNI, Communications, Navigation and Identification
840	CNI, Clinical Nursing Intern
841	CNN- Cable News Network,Cellular Nonlinear Network
842	CNO, Computer Network Operations
843	CNR- Canadian National Railway,Combat Net Radio
844	CNV, Copy-Number Variable (genetics)
845	CNY, Chinese yuan renminbi (ISO 4217 currency code)
846	co, Corsican language (ISO 639-1 code)
847	Co, Cobalt
848	CO,many, including Central Office (phone company); see entry, Colorado (postal symbol), Commanding Officer (military)
849	COA, Certificate/Concept Of Analysis,Course Of Action (military)
850	COB, Close Of Business [day]
851	COBRA,Consolidated Omnibus Budget Reconciliation Act of 1985
852	COCOM, Combatant Command (military)
853	COD, Cash On Delivery, Democratic Republic of the Congo (ISO 3166 trigram)
854	CoDA, Co-Dependents Anonymous
855	codec, Coder-Decoder / Compressor-Decompressor / Compression-Decompression algorithm
856	COE, Cab Over Engine (see truck),Common Operating Environment (military)
857	COEA, Cost Operational Effectiveness Analysis (military)
858	COEIA, Combined Operational Effectiveness and Investment Appraisal (military)
859	COFT, Conduct Of Fire Trainer (military)
860	COG, Centre Of Gravity,Current Operations Group (military), Republic of the Congo (ISO 3166 trigram)
861	COGENT, Cognitive Objects within a Graphical EnviroNmenT
862	COIL, Chemical Oxygen Iodine Laser
863	COIN, Counter-Insurgency (military)
864	COK, Cook Islands (ISO 3166 trigram)
865	COL, Colombia (ISO 3166 trigram)
866	COLA, comp.os.linux.announce,Cost Of Living Adjustment
867	COLT, Combat Observation and Lasing Team (military)
868	COM, Comoros (ISO 3166 trigram), Component Object Model
869	COMECON, Council for Mutual Economic Assistance (economic counterpart of the Warsaw Pact, 1949-1991)
870	COMMZ, Communications Zone (military)
871	COMSEC, Communications Security (military)
872	CONAD, U.S. Continental Air Defense Command
873	CONCACAF, Confederation Of North, Central American and Caribbean Association Football
874	CONOPS, Concept of Operations (military)
875	CONUS, Continental United States
876	COO, Chief Operating Officer
877	COP, Colombian peso (ISO 4217 currency code), Common Operating/Operational Picture
878	COPE, U.K. Committee On Publication Ethics
879	COPUS, U.K. Committee on the Public Understanding of Science
880	cor, Cornish language (ISO 639-2 code)
881	CORBA, Common Object Request Broker Architecture
882	CORD,(i/a) Common Operational Requirements Document
883	CORE, Consortium for Oceanographic Research and Education
884	CORG, (U.S.) Combat Operations Research Group
885	COROT, COnvection, ROtation and planetary Transits
886	cos, Corsican language (ISO 639-2 code),Cosine
887	COS, Cooper Ornithological Society
888	COSCOM, Corps Support Command (military)
889	COSER, COoperative SERvice
890	CoT, Car of Tomorrow (former NASCAR race car design)
891	COTS, Commercial Off The Shelf
892	Coy, Company (military unit)Cow
893	CP, Canadian Pacific,Check Point,Command Post,Club Penguin
894	CPA, Certified Public Accountant
895	CPCU,Certified Property Casualty Underwriter
896	CPD, Capabilities Production Document
897	CPE, Certificate of Proficiency in English
898	CPE, Certified Professional Ergonomist
899	CPF, Calibration Parameter File,Canadian Patrol Frigate
900	CPG, Clinical Practice Guideline
901	CPI, CERDEC Command, Power and Integration
902	CPIM, Certification on Production and Inventory Management
903	CPIR,Computationally-Private Information Retrieval
904	CPON, Certified Pediatric Oncology Nurse
905	CPPCC, Chinese People's Political Consultative Conference
906	CPR, Canadian Pacific Railway
907	CPR, Cardiopulmonary resuscitation
908	CPSM, Continuous Phase Shift Modulation
909	CPSU, Communist Party of the Soviet Union
910	CPT, Contingency Planning Team
911	CPU,Contract Postal Unit
912	CPV, Cape Verde (ISO 3166 trigram)
913	CPX, Command Post eXercise
914	CQ, Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
915	cr, Cree language (ISO 639-1 code)
916	Cr, Chromium
917	CR- Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
918	CRAM, Combined Radiometric Correction Model
919	CRC- Central RTI Component,Chemical Rubber Company,Christian Reformed Church,Control and Reporting Centre,Cyclic Redundancy Check, Costa Rican colón (ISO 4217 currency code),Costa Rica (IOC and FIFA trigram, but not ISO 3166)
920	CRD, Capstone Requirements Document
921	cre, Cree language (ISO 639-2 code)
922	CREB, Cyclic AMP-response Element Binding (protein)
923	CREEP, Committee for the Re-Election of the President, a pejorative nickname used by opponents
924	CRI- China Radio International, Costa Rica (ISO 3166 trigram)
925	CRIPL, Consolidated Remain-In-Place List
926	CRM, Cardiac Rhythm Management,Customer Relationship Management
927	CRO, Croatia (IOC and FIFA trigram, but not ISO 3166)
928	CRP- Committee for the Re-Election of the President,Control and Reporting Post
929	CRT- Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
930	CRTC, Canadian Radio-television and Telecommunications Commission
931	cs, Czech language (ISO 639-1 code)
932	Cs, Caesium
933	CS- Combat Support,Computer Scientist, Costa Rica (FIPS 10-4 country code),Serbia and Montenegro (ISO 3166 digram; obsolete since 2006)
934	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
935	CSC- Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
936	CSERIAC, (U.S. DoD) Crew Systems Ergonomics Information Analysis Center
937	CSG, Corps Support Group
938	CSI,see entry
939	CSICOP, Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
940	CSIP, Commercial Stable Image Platform (AMD)
941	CSK, Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
942	CSL, U.K. Central Science Laboratory
943	CSPI, Center for Science in the Public Interest
944	CSR, Control Supply Rate
945	CSR, Corporate Social Responsibility [1]
946	CSRC, Conflict Studies Research Centre
947	CSRF, Cross-Site Request Forgery
948	CSS- Cascading Style Sheets,Catalina Sky Survey,Central Security Service,Combat Service Support,Confederate States Ship,Content-scrambling system,Cross-site scripting
949	CSSCS, Combat Service Support Control System
950	CST, Central Standard Time (UTC−6 hours)
951	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)
952	CTBT, Comprehensive [Nuclear] Test Ban Treaty
953	CTC, Closed Timelike Curve (relativity),(U.S.) Combat Training Center
954	CTDB, Compact Terrain Data Base (file format)
955	CTE- Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984), Chronic traumatic encephalopathy
956	CTGF, connective tissue growth factor
957	CTI, Co-operative Target Identification
958	CTIL, Critical Tracked Items List
959	CTIS, Central Tire Inflation System
960	CTMS, Clinical Trial Management System
961	CTO, Chief Technical Officer,Chief Technology Officer
962	CTS, Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
963	CTSS, Compatible Time-Sharing System
964	CTU, Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
965	CTVT, Canine Transmissible Venereal Tumour
966	cu, Old Church Slavonic language (ISO 639-1 code)
967	Cu, Copper (Latin Cuprum)
968	CU, Carrie Underwood,Cuba (FIPS 10-4 country code; ISO 3166 digram)
969	CUB, Cuba (ISO 3166 trigram)
970	CUCV, Commercial Utility Cargo Vehicle
971	CUP, Cuban peso (ISO 4217 currency code)
972	CUPS, Common Unix Printing System
973	CUPW, Canadian Union of Postal Workers
974	CUREA, Consortium for Undergraduate Research and Education in Astronomy
975	CuW, Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
976	CUW, Curaçao (ISO 3166 trigram)
977	cv, Chuvash language (ISO 639-1 code)
978	CV,many, including curriculum vitae (résumé); see entry
979	CVCC- Combat Vehicle Command and Control,Compound Vortex Controlled Combustion (1970s Honda automobile engine technology)
980	CVE, Cape Verde escudo (ISO 4217 currency code)
981	CVI, Combat Vehicle Identification
982	CVLL, Crypto Variable Logic Label
983	CVR, Cockpit Voice Recorder,Combat Vehicle Reconnaissance
984	CVS, Concurrent Versions System
985	CVSD, Continuous Variable Slope Delta (modulation)
986	CVT, Continuously Variable Transmission
987	CW, Continuous Wave,Clothes Washer, Cook Islands (FIPS 10-4 territory code)
988	CWC, Chemical Weapons Convention
989	CWS, Canadian Wildlife Service
990	CWRU, Case Western Reserve University
991	CX, Christmas Island (ISO 3166 digram),One Hundred and Ten (in Roman numerals)
992	CXR, Christmas Island (ISO 3166 trigram)
993	cy, Welsh language (ISO 639-1 code)
994	CY, Calendar year, Cyprus (ISO 3166 and FIPS 10-4 country code digram)
995	cym, Welsh language (ISO 639-2 code)
996	CYM, Cayman Islands (ISO 3166 trigram)
997	CYP, Cyprus (ISO 3166 trigram),Cyprus pound (ISO 4217 currency code)
998	CZ, Combat Zone, Czech Republic (ISO 3166 and FIPS 10-4 country code digram)
999	CZE, Czech Republic (ISO 3166 trigram)
1000	CZK, Czech koruna (ISO 4217 currency code)
1001	CZF, (Christian Zombie Fan)
1002	CZMA, (US) Coastal Zone Management Act
1003	d, Deci
1004	D, Deuterium
1005	da, Danish language (ISO 639-1 code),deca
1006	DA, Denmark (FIPS 10-4 country code), Debtors Anonymous, U.S. Department of the Army,District Attorney
1007	DAB,Digital Audio Broadcasting
1008	DACT, Data Automated Communications Terminal,Dissimilar Air Combat Training
1009	DAES, Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis, Experimentation and Simulation
1010	DAF, Dissolved Air Flotation, a technique used in water treatment
1011	DAFIF, Digital Aeronautical Flight Information File
1012	DAK, Disney's Animal Kingdom
1013	dan, Danish language (ISO 639-2 code)
1014	DAO, Division Ammunition Officer
1015	DAQ, Data acquisition, Delivered Audio Quality
1016	DARE, Drug Abuse Resistance Education
1017	DARO,(i/a) (U.S.) Defense Airborne Reconnaissance Office
1018	DARPA, U.S. Defense Advanced Research Projects Agency
1019	DART, Disaster Assistance Response Team,Dublin Area Rapid Transit
1020	DAS, Defensive Aids Suite
1021	DASD, (U.S.) Deputy Assistant Secretary of Defense
1022	DASL, Datapoint's Advanced Systems Language
1023	DAU, (U.S.) Defense Acquisition University
1024	DAWN, (U.S.) Drug Abuse Warning Network
1025	dB, Decibel
1026	Db, Dubnium
1027	DB, Database,Deutsche Bahn
1028	DBA, De Bellis Antiquitatis (miniature wargaming rules)
1029	DBBL, (U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
1030	DBCS, Double Byte Character Set
1031	DBDO, Desert BDO
1032	DBE, Dame Commander of the Order of the British Empire
1033	DBF, Detection By Fire (weapon launch signature)
1034	DBM, De Bellis Multitudinis (miniature wargaming rules),Detection By Movement (military target)
1035	DBR, De Bellis Renationis (miniature wargaming rules)
1036	DBRA, Davis-Bacon Related Acts
1037	DBS, Direct Broadcast Services (television)
1038	DC, da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current, District of Columbia (postal symbol), Douglas Aircraft Company,Dublin Core,Duty Cycle
1039	DCA, Defensive Counter Air,Drum Corps Associates, DiChloroAcetate, Ronald Reagan Washington National Airport (IATA code)
1040	DCAA, (U.S.) Defense Contract Audit Agency
1041	DCAS, Devon and Cornwall Archery Society
1042	DCC, Dallas Christian College
1043	DCC, Digital Command Control (model railroading),Direct Client-to-Client (Internet Relay Chat),Dismounted Close Combat
1044	DCCP, Datagram Congestion Control Protocol
1045	DCD, [Organ] Donation after Cardiac Death
1046	DCE, Data Communication Equipment
1047	DCFC, Death Cab for Cutie
1048	DCI, Detection, Classification and Identification,Drum Corps International,Duellists' Convocation International, now known simply by the initials
1049	DCIM, Digital Camera Images
1050	DCIMS, Dental Classification Information Management System,Dismounted Combat Identification Marking System
1051	DCL,Disney Cruise Line
1052	DCN,Deacon
1053	DCOM,Disney Channel Original Movie
1054	DCOP, Desktop Communication Protocol
1055	DCSOPS, Deputy Chief of Staff for Operations and plans
1056	DCW, Digital Chart of the World
1057	DCYSC, Discovery Channel Young Scientist Challenge
1058	DD,many, including due diligence and dear daughter (increasingly prevalent on social mailing lists, blogs, and bulletin boards); see entry
1059	DDA- Digital Differential Analyzer (graphics algorithm),Digital Differential Analyzer,Deputy District Attorney
1060	DDD- Data Display Debugger,Digital Digital Digital (CD mastering)
1061	DDL, Digital Data Link
1062	DDN, U.S. Defense Data Network
1063	DDoS, Distributed Denial of Service
1064	DDS, Doctor of Dental Surgery
1065	DDT- Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
1066	de, German language (ISO 639-1 code)
1067	DE, Delaware (postal symbol),Germany (ISO 3166 digram)
1068	DEA, Drug Enforcement Administration
1069	DEA, Drug Enforcement Agency
1070	DEC,(a/i) Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
1071	DeCA, (U.S.) Defense Commissary Agency
1072	DECSIM, Model DEComposition and SIMulation algorithm,Directed Energy Combat SIMulation
1073	DECT, Digital European Cordless Telephone
1074	DEFCON, Defence readiness condition
1075	DEFRA, (UK) Department for Environment, Food and Rural Affairs
1076	DELT, Dual Ended Line Test (ing)
1077	DEM, Data Exchange Mechanism,Digital Elevation Model
1078	DEN, Denmark (IOC and FIFA trigram, but not ISO 3166)
1079	DEPSECDEF, (U.S.) Deputy Secretary of Defense
1080	DERA, British Defence Evaluation and Research Agency (1995-2001)
1081	DES, Deep Ecliptic Survey
1082	deu, German language (ISO 639-2 code)
1083	DEU, Germany (ISO 3166 trigram)
1084	DFAS, (U.S.) Defense Finance and Accounting Service
1085	DFCB, Data Format Control Book
1086	DfID, UK Department for International Development
1087	DFM, Dynamic Flowgraph Methodology
1088	DFM,(ii) Discrete Field Model see Superluminal motion
1089	DFSP, Dermatofibrosarcoma protuberans
1090	DfT, UK Department for Transport
1091	DFTBA, Don't Forget To Be Awesome- a term commonly used by the Vlogbrothers
1092	DGPS, Differential GPS
1093	DGZ, Desired Ground Zero
1094	DH, dear husband (increasingly prevalent on social mailing lists, blogs, and bulletin boards),Designated hitter
1095	DHA, DocosaHexaenoic Acid
1096	DHHS, (U.S.) Department of Health and Human Services
1097	DHL, Dalsey, Hillblom, and Lynn (courier service)
1098	DHRA, (U.S.) DoD Human Resources Activity
1099	DHS, U.S. Department of Homeland Security
1100	DHSS, UK Department of Health and Social Security
1101	DHTFYSS, U.S. Don't Have Time For You Silly S****
1102	DHY, Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
1103	DIA, U.S. Defense Intelligence Agency
1104	DIAC, Department of Immigration and Citizenship (Australia) [1]
1105	DiC,Design Island Centre (computing usually used in a teaching situation)
1106	DICASS, DIrectional Command Activated Sonobuoy System
1107	DILLIGAD, Do I Look Like I Give A Damn? (military shorthand, slightly less offensive than the following)
1108	DILLIGAF, Do I Look Like I Give A Fuck? (military shorthand)
1109	DIF, Data Interchange Format
1110	DIFAR, DIrectional Frequency Analysis and Recording
1111	DIME, Dense Inert Metal Explosive
1112	DIMM, Dual In-line Memory Module (computing)
1113	DINKY, Double Income, No Kids Yet
1114	DIP, Dual In-line Package (electronics)
1115	DIPS, Defense independent pitching statistics
1116	DIR, Defence Industrial Research
1117	DIS- Defence Intelligence Staff,(U.S.) Defense Investigative Service,Distributed Interactive Simulation,Draft International Standard (ISO)
1118	DISA- U.S. Defense Information Systems Agency,Distinguished Individual Service Award
1119	DISCOM, Division Support Command
1120	DISE, Deployable Intelligence Support Element
1121	DISSTAF, DIS Search and Target Acquisition Fidelity experiment
1122	DITY,(i/a) Do-It-Yourself
1123	div, Dhivehi language (ISO 639-2 code)
1124	DIVAD, Division Air Defence
1125	DIY, Do It Yourself
1126	DJ, Disc Jockey,Dinner Jacket, Djibouti (ISO 3166 digram; FIPS 10-4 country code)
1127	DJD, Degenerative Joint Disease,Dublin Julian Day,Discoveries in the Judaean Desert
1128	DJF, Djibouti franc (ISO 4217 currency code)
1129	DJI, Djibouti (ISO 3166 trigram)
1130	DJS, Director, Joint Staff
1131	DK, Denmark (ISO 3166 digram)
1132	DKK, Danish krone (ISO 4217 currency code)
1133	DL,Dexter's Laboratory
1134	DLA, U.S. Defense Logistics Agency, Dental Laboratories Association
1135	DLIC, Detachment Left-In-Contact
1136	DLIR, Depot-Level Inspection and Repair
1137	DLL, Dynamic Link Library
1138	DLPMC, DorsoLateral PreMotor Cortex
1139	DLR, Deutsches Zentrum für Luft- und Raumfahrt (German, German Aerospace Centre),Docklands Light Railway
1140	DLRP, Data Link Reference Point
1141	DLS, Deep Lens Survey
1142	DLSA, (U.S.) Defense Legal Services Agency
1143	DLSc, Diploma in Library Science
1144	DLSC, U.S. Defense Logistics Services Center,U.S. Defense Logistics Support Command,Department of Library Special Collections (Western Kentucky University Libraries),Direct Loan Servicing Center,Directorate of Land Strategic Concepts (Canada),Dominican Lay Scholars Community
1145	DLTBGYD,Don't let the bastards grind you down
1146	DM- Dominica (ISO 3166 digram), Dungeon Master (role-playing games)
1147	DMA- Designated market area (primarily a U.S. term),U.S. Defense Mapping Agency (became NIMA, then NGA),Direct Memory Access (computing), Dominica (ISO 3166 trigram)
1148	DMC, (U.S.) Defense Management Council
1149	DMCA,Digital Millennium Copyright Act
1150	DMI, Desktop Management Interface (computing)
1151	DMM,Digital Multimeter
1152	DMOC, Distributed Mission Operations Centre
1153	DMPA, (U.S.) Defense Medical Programs Activity
1154	DMPFC, DorsoMedial PreFrontal Cortex
1155	DMPK, Drug Metabolism and Pharmacokinetics
1156	DMRB, Design Manual for Roads and Bridges
1157	DMS, U.S. Defense Message System
1158	DMSP, U.S. Defense Meteorological Satellite Program
1159	DMT, Dimethyltryptamine
1160	DMU, Diesel Multiple Unit, a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
1161	DMV, Department of Motor Vehicles
1162	DMZ, DeMilitarized Zone
1163	DN, Deacon
1164	DNA, U.S. Defense Nuclear Agency,DeoxyriboNucleic Acid,Douglas Noël Adams
1165	DNAW, Day Night All Weather
1166	DND, Department of National Defence (Canada),Do Not Disturb
1167	DNDi, Drugs for Neglected Diseases initiative
1168	DNDO, U.S. Domestic Nuclear Detection Office
1169	DNM, Defence Nuclear Material
1170	DNK, Denmark (ISO 3166 trigram)
1171	DNR, Do Not Resuscitate
1172	DNS, Domain Name System
1173	DO, Dominica (FIPS 10-4 country code),Dominican Republic (ISO 3166 digram), Doctor of Osteopathic Medicine
1174	DOA, Dead On Arrival,Dead or Alive
1175	DOB, Date Of Birth
1176	DOD, U.S. Department of Defense
1177	DODAF, U.S. Department of Defense Architectural Framework
1178	DoDD, U.S. Department of Defense Directive
1179	DoDEA, (U.S.) Department of Defense Education Activity
1180	DOE,(i/a) U.S. Department of Energy
1181	DOHC, Dual-OverHead-Cam engine
1182	DOI, Digital Object Identifier,U.S. Department of the Interior
1183	DOMS, (U.S.) Director of Military Support
1184	DOP, Dominican peso (ISO 4217 currency code)
1185	DORA, Defence of the Realm Act
1186	DOS, Denial of Service (DoS, cf. DDoS),Density of State,Disk Operating System
1187	DOT, Department of Transportation (U.S. federal or state),Damage Over Time (common in World of Warcraft)
1188	DOTA,short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1189	DotD, Deal of the Day (marketing gimmick)
1190	DOTMLPF, Doctrine, Organization, Training, Materiel, Leadership, Personnel, and Facilities (mnemonic)
1191	DOW, Died of Wounds
1192	DP, Division de production (Algerian petroleum company)
1193	DP, Decision Point,Dynamic Programming
1194	DPA, UK Defence Procurement Agency
1195	DPCO, Double-Pole Change Over
1196	DPDT, Double-Pole Double-Throw
1197	DPICM, Dual-Purpose Improved Conventional Munition
1198	DPKO, UN Department for Peacekeeping Operations
1199	DPMO, (U.S.) Defense Prisoner of War/Missing Personnel Office
1200	DPPDB, Digital Point Positioning Database
1201	DPRE, Displaced Person or Refugee (plural Displaced Persons and Refugees) (originally Displaced Persons, Refugees, Evacuees)
1202	DPRK, Democratic People's Republic of Korea
1203	DPST, Double-Pole Single-Throw
1204	DQ, Dairy Queen, Jarvis Island (FIPS 10-4 country code)
1205	DR, Dead Reckoning, Dominican Republic (FIPS 10-4 country code), Danmarks Radio (Danish Broadcasting Corporation)
1206	DRA, Defence Research Agency (UK, 1991-1995),Democratic Republic of America
1207	DRC, Democratic Republic of the Congo
1208	DRDC, Defence Research & Development Canada
1209	DREA,(i/a) Defence Research Establishment Atlantic (obsolete 2002)
1210	DRES,(i/a) Defence Research Establishment Suffield (obsolete 2002)
1211	DRET,(i/a) Defence Research Establishment Toronto (obsolete 2002)
1212	DREV,(i/a) Defence Research Establishment Valcartier (obsolete 2002)
1213	DRI, Detection, Recognition, Identification,Dietary Reference Intake
1214	DRIC,(i/a) (U.S.) Defense Research Information Center
1215	DRL, Daytime Running Lights,Dorman Roberts Ltd.
1216	DRM, Digital Rights Management
1217	DRMS, (U.S.) Defense Revitalization and Marketing Service
1218	DRPR, Drawing Practices
1219	DRT, Document Related Technologies
1220	Ds, Darmstadtium
1221	DS- Dear son (increasingly prevalent on social mailing lists, blogs, and bulletin boards),Defence Scientist,Direct Support, Dust Storm (METAR Code)
1222	DSA- (U.S.) Defense Support Activities,Division Support Area
1223	DSAA- (U.S.) Defense Security Assistance Agency,Driving Schools Association of the Americas,DECT Standard Authentication Algorithm
1224	DSAS, Disney Sing Along Songs
1225	DSB, (U.S.) Defense Science Board
1226	DSC- Differential Scanning Calorimeter,Digital Selective Calling,Digital Still Camera,Distinguished Service Cross,Doctor of Surgical Chiropody (obsolete),Document structure convention (PostScript programming),Dynamic Stability Control
1227	DSCS, U.S. Defense Satellite Communications System
1228	DSCSOC, DSCS Operations Center
1229	DSD, Defence Studies Department (King's College, London)
1230	DSE, Dry Sheep Equivalent
1231	DSG,Direct-Shift Gearbox
1232	DSID, Dismounted Soldier Identification System
1233	DSL, Digital Subscriber Line
1234	DSLR, Digital single-lens reflex (camera)
1235	DSM, Diagnostic and Statistical Manual of Mental Disorders
1236	DSN, Deep Space Network
1237	DSO, Distinguished Service Order (British military decoration)
1238	DSP- Defense Standardization Program,Defense Support Program,Digital Signal Processing
1239	DSPL, Design Specialists and Plans Language
1240	DSR, Deformed Special Relativity
1241	DSRV- Deaf Sports Recreation Victoria,Deep Submergence Rescue Vehicle
1242	DSS- Digitized Sky Survey,Discarding-Sabot Shell (ammunition)
1243	DST, Daylight saving time
1244	DSTL, British Defence Science and Technology Laboratory
1245	DSWA, (U.S.) Defense Special Weapons Agency
1246	DTA, Dental Technologists Association
1247	DTD, Digital Terrain Data
1248	DTE, Data Terminal Equipment,Down To Earth
1249	DTG, Date-Time Group
1250	DTH, Direct To Home (television)
1251	DTI, UK Department of Trade and Industry
1252	DTIC, (U.S.) Defense Technical Information Center
1253	DTL, Diode-Transistor Logic (electronics)
1254	DTMF, Dual-tone multi-frequency signaling
1255	DTLOMS, Doctrine, Training, Leader development, Organization, Materiel, and Soldier (mnemonic)
1256	DTO, Disruptive Technology Office (was ARDA)
1257	DTOMLS, Doctrine, Training, Organization, Materiel, Leader and Soldier development (mnemonic)
1258	DTR, Determine The Relationship
1259	DTSA, (U.S.) Defense Technology Security Administration
1260	DU- Depleted Uranium, Dust (METAR Code)
1261	DUI- Data Use Identifier,Data Use Institute,Davis Unified Ignition,Diving Unlimited International,Documento Único de Identidad,Documento Unico de Importación,Driving Under the Influence,Duke University Improv
1262	DUMBO, Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1263	DUSD, (U.S.) Deputy Under-Secretary of Defense
1264	dv, Dhivehi language (ISO 639-1 code)
1265	DVD, Digital Versatile Disk (was Digital Video Disk)
1266	DVLC, UK Driver and Vehicle Licencing Centre
1267	DVM, Doctor of Veterinary Medicine
1268	DVO, Direct View Optics
1269	DVOM,Digital Volt-Ohm Meter
1270	DVP,various meanings (disambiguation page)
1271	DW, Drum Workshop
1272	DWG, Divisional Wargame (military simulation)
1273	DWI, Dance With Intensity,Danish West Indies,Diffusion-weighted imaging,Direct water injection,Disaster Welfare Inquiry,Drinking Water Inspectorate,Driving While Intoxicated/Impaired
1274	DWM, Doctor Who Magazine
1275	DWIM, Do What I Mean
1276	DWTS, Dancing with the Stars
1277	DWW, Down with Webster
1278	DX- Dexterity (role-playing games), DeXtrorphan,Distant (radio), D-Generation X (professional wrestling stable)
1279	DXA, Dual-energy X-ray Absorptiometry
1280	DXM, DeXtroMethorphan
1281	Dy, Dysprosium
1282	DY, Dahomey (ISO 3166 digram; obsolete since 1977)
1283	dz, Dzongkha language (ISO 639-1 code)
1284	DZ, Algeria (ISO 3166 digram),Drizzle (METAR Code), Drop Zone
1285	DZA, Algeria (ISO 3166 trigram)
1286	DZD, Algerian dinar (ISO 4217 currency code)
1287	dzo, Dzongkha language (ISO 639-2 code)
1288	E, East
1289	EA, Electronic Attack,Emotions Anonymous,Engagement Area,Electronic Arts,Enrolled Agent,Environmental Assessment,Enterprise Architect, Exaampere
1290	EABU, Explain Acronyms Before Use
1291	EAC, Echelons Above Corps
1292	EAPC, Euro-Atlantic Partnership Council
1293	EASA, European Aviation Safety Agency
1294	EAST, Experimental Advanced Superconducting Tokamak
1295	EBD, Electronic Brake Distribution
1296	EBE, Extraterrestrial Biological Entity
1297	EBO,(i/a) Effects Based Operations,Encyclopædia Britannica Online,European Board of Ophthalmology
1298	EBSA, Employee Benefits Security Administration
1299	EBW, Electron Beam Welding
1300	EBW, Exploding BridgeWire
1301	EC- Ecuador (ISO 3166 digram; FIPS 10-4 country code), Electronic Combat,European Community (see EEC), Exacoulomb
1302	ECB- England (and Wales) Cricket Board,European Central Bank
1303	ECBR, European Coalition for Biomedical Research
1304	ECASS, European Centre for Analysis in the Social Sciences [1]
1305	ECCM, Electronic Counter-Counter-Measures
1306	ECFS, Electronic Case Filing System
1307	ECG, Electrocardiogram
1308	ECHO- Each Community Helps Others (EPA programme),Educational Concerns for Hunger Organization,European Commission Host Organization,European Commission Humanitarian aid Office, Exchange Clearing House,Expanded Characteristic Option, Explanatory Coherence by Harmony Optimization
1309	ECHR, European Convention on Human Rights
1310	ECJ, European Court of Justice
1311	ECL, Emitter Coupled Logic (electronics)
1312	ECM- Electronic Counter-Measures,Enterprise Content Management
1313	ECommHR, European Commission on Human Rights
1314	ECS- Emergency Contact System,Enhanced Chip Set (computing),EOSDIS Core System,Extended Chip Set (computing)
1315	ECSC, European Coal and Steel Community (distant ancestor of the EU)
1316	ECT, ElectroConvulsive Therapy
1317	ECtHR, European Court of Human Rights
1318	ECU- Ecuador (ISO 3166 trigram), European Currency Unit (ancestor of the euro)
1319	ECW- Eastern Championship Wrestling/Extreme Championship Wrestling,ED[edit]
1320	EDA, European Defence Agency
1321	EDAC, Error Detection And Correction
1322	EDCS, Environmental Data Coding Specification
1323	EDD- Earliest due date,Electron-detachment dissociation,Elena Delle Donne (American basketball player),Employment Development Department (California state agency),End-diastolic dimension,Expected Date of Delivery (pregnancy)
1324	EDECSIM, Extended Directed Energy Combat Simulation
1325	EDGAR, Electronic Data Gathering, Analysis, and Retrieval (U.S. Securities and Exchange Commission filings database)
1326	EDH, Eastman Dental Hospital
1327	EDS- Electronic Data Systems,Electronic Differential System
1328	EDSA, Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1329	EDT, Eastern Daylight Saving Time (UTC−4 hours)
1330	EDTA- Electric Drive Transportation Association, EthyleneDiamineTetraAcetic acid,EE[edit]
1331	ee, Ewe language (ISO 639-1 code)
1332	EE- Estonia (ISO 3166 digram; from the country's native name of Eesti), Electrical engineering,Electrical Engineer,E&E, Escape and Evasion (training)
1333	EEC, European Economic Community (predecessor of the EU)
1334	EEG, ElectroEncephaloGram
1335	EEK, Estonian kroon (ISO 4217 currency code)
1336	EENT, End Evening Nautical Twilight
1337	EEO, Equal Employment Opportunity
1338	EEOC, (U.S.) Equal Employment Opportunity Commission
1339	EEZ, Economic Exclusion Zone or Exclusive Economic Zone
1340	EF- Electro-focus (Canon lens mount),Entry Foyer, Exafarad
1341	EFF, Electronic Frontier Foundation
1342	EFL,English as a Foreign Language
1343	EFM, Enterprise Feedback Management
1344	EFOA, European Fuel Oxygenates Association
1345	EFSA, European Food Safety Authority
1346	EFT, Electronic Fund Transfer
1347	EFTA- European Free Trade Area, European Free Trade Association
1348	EFV, Expeditionary Fighting Vehicle
1349	EG, Egypt (ISO 3166 digram; FIPS 10-4 country code)
1350	EGBUS, External Genitalia, Bartholin's glands, Urethra & Skene's glands
1351	EGCG, EpiGalloCatechin-3-Gallate
1352	EGIS, Erieye Ground Interface Segment
1353	EGP, Egyptian pound (ISO 4217 currency code)
1354	EGRET, Energetic Gamma-Ray Experiment Telescope
1355	EGY, Egypt (ISO 3166 trigram)
1356	EH, Exahenry,Western Sahara (ISO 3166 digram)
1357	EHA- Education for All Handicapped Children Act (U.S. federal legislation; since superseded by the Individuals with Disabilities Education Act), Emotional Health Anonymous
1358	EHF, Extremely High Frequency
1359	EHR, Equipment History Record
1360	Ei, Exbi
1361	EI, Ireland (FIPS 10-4 country code; from Éire)
1362	EIA, Environmental Impact Assessment
1363	EIAH,Environnements Informatiques pour l'Apprentissage Humain
1364	EIAH,Encyclopedia of Iranian Architectural History
1365	EIC,East India Company
1366	EICS,East India Company's Service
1367	eID,electronic ID
1368	EIRP, Effective Isotropic Radiated Power
1369	EIS, Environmental Impact Statement
1370	EJ, Exajoule
1371	EK, Equatorial Guinea (FIPS 10-4 country code),Exakelvin
1372	EKG, Electrocardiogram (from German Elektrokardiogramm)
1373	EKMS, Electronic Key Management System
1374	el, Greek language (ISO 639-1 code)
1375	EL, Exalitre
1376	ELF-(a/i) Earth Liberation Front,Endangered Language Fund,Eritrean Liberation Front,Executable and Linkable Format,Extremely Low Frequency
1377	ELINT, Electronic Intelligence
1378	ell, Greek language (ISO 639-2 code)
1379	ELL, English Language Learner
1380	ELM, Edge-Localised Mode (plasma physics)
1381	ELO, Electric Light Orchestra
1382	ELP- Emerson, Lake & Palmer,European Left Party
1383	ELSS, Emergency Life Support Stores
1384	ELT, Emergency Locator Transmitter
1385	Em, Exametre
1386	EM, ElectroMagnetism/ElectroMagnetic
1387	EMA,(i/a) European Medicines Agency
1388	EMC- Electric Membership Corporation,Electromagnetic Compatibility,Electro-Motive Corporation,European Muon Collaboration,Evergreen Marine Corporation
1389	EMCON, (Electromagnetic) Emissions Control
1390	EMD- General Motors Electro-Motive Division,Engineering and Manufacturing Development,European Missile Defence
1391	EMDG, Euro-Missile Dynamics Group
1392	EMDR, Eye Movement Desensitisation and Reprocessing
1393	EMEA, Europe, Middle East and Africa
1394	EMF- Electromotive force,Epsom Mad Funkers (1990s-2000s indie dance band)
1395	EMG, ElectroMyoGraph
1396	EMO, Emergency Measures Organisation- Emotional
1397	EMP, ElectroMagnetic Pulse
1398	EMS, Emergency Medical Services
1399	EMT, Emergency Medical Technician
1400	EMU, Electric Multiple Unit,a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
1401	en, English language (ISO 639-1 code)
1402	EN- Corps of Engineers, Estonia (FIPS 10-4 country code),Exanewton
1403	ENCODE, Encyclopedia of DNA Elements (human genome data project)
1404	ENE, East North-East
1405	eng, English language (ISO 639-2 code)
1406	ENG, England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1407	ENT, Ear, Nose and Throat
1408	ENTEC, Euro NATO Training Engineer Centre
1409	ENVL, Envelope
1410	ENY, Enemy
1411	eo, Esperanto language (ISO 639-1 code)
1412	EO- Electro-Optics,Engagement Operations
1413	EOD, Explosive Ordnance Disposal
1414	EOG, ElectroOculoGraphy
1415	EOS- Earth Observation Satellite,(a/i) Electro-Optical System, Canon's autofocusing system for film and digital SLR cameras, Electrophoresis Operations in Space, a space manufacturing project of the McDonnell Douglas Astronautics Company
1416	EOSAT, Earth Observation Satellite
1417	EOSDIS,(a/i) Earth Observation Satellite Data and Information System
1418	EOTS- Electro-Optical Tactical Sensor,(a/i) Eye Of The Storm (World of Warcraft)
1419	EOM, End of Message
1420	EP, European Parliament
1421	EP, Extended play
1422	EPA- EicosaPentaenoic Acid, Environmental Protection Agency
1423	EPCOT, Experimental Prototype Community Of Tomorrow
1424	EPCR- Endothelial protein C receptor,European Professional Club Rugby
1425	EPGS, EOS Polar Ground Sites
1426	EPIRB,(a/i) Emergency Position Indicating Radio Beacon
1427	EPL, English Premier League
1428	epo, Esperanto language (ISO 639-2 code)
1429	EPOS, Electronic Point Of Sale
1430	EPPA, Employee Polygraph Protection Act
1431	EPR, European Pressurised [Nuclear] Reactor
1432	EPW- Earth Penetrator Weapon/Warhead,Economic and Political Weekly (Indian publication),Enemy Prisoner of War,EQ[edit]
1433	EQ, Emotional Quotient
1434	EQG, Equatorial Guinea (FIFA trigram, but not IOC or ISO 3166)
1435	Er, Erbium
1436	ER- Emergency Room, Eritrea (ISO 3166 digram; FIPS 10-4 country code)
1437	ERA- Earned run average,Engineering Research Associates,Equal Rights Amendment,English Racing Automobiles,European Railway Agency
1438	ERCIM,(a/i) European Research Consortium for Informatics and Mathematics
1439	ERI, Eritrea (ISO 3166 trigram)
1440	ERLAWS, Eastern Ruapehu Lahar Alarm and Warning System
1441	ERN, Eritrean nakfa (ISO 4217 currency code)
1442	EROS, Earth Resources Observation System
1443	ERP, Engineer Regulating Point
1444	ERR, Eesti Rahvusringhääling
1445	ERS, Earth Resources Survey
1446	ERTS, Earth Resources Technology Satellite (became Landsat)
1447	ERV, Endogenous RetroVirus
1448	es, Spanish language (ISO 639-1 code)
1449	Es- Einsteinium,Exasecond
1450	ES- El Salvador (FIPS 10-4 country code), Electronic warfare Support, Exasiemens,Spain (ISO 3166 digram; from the country's native name of España)
1451	ESA- Electro-Spark Alloying,Endangered Species Act,European Space Agency
1452	ESC- Embryonic Stem Cell,Electronic Stability Control
1453	ESD, ElectroStatic Discharge
1454	ESDP, European Security and Defence Policy
1455	ESE, East South-East
1456	ESH, Western Sahara (ISO 3166 trigram)
1457	ESL, English as a Second Language
1458	ESM, Electronic warfare Support Measures
1459	ESO, European Southern Observatory
1460	ESOL, English for Speakers of Other Languages
1461	ESP- Electronic Stability Program,Extra-sensory perception, Spain (ISO 3166 trigram)
1462	ESPGHAN,European Society for Paediatric Gastroenterology, Hepatology and Nutrition
1463	ESPN, Entertainment and Sports Programming Network
1464	est, Estonian language (ISO 639-2 code)
1465	EST- Eastern Standard Time (UTC−5 hours), Estonia (ISO 3166 trigram)
1466	ESU, Emergency Services Unit
1467	ESV, Engineer Support Vehicle
1468	et, Estonian language (ISO 639-1 code)
1469	ET- Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1470	Exatesla- Extra Terrestrial
1471	ETB, Ethiopian Birr (ISO 4217 currency code)
1472	ETF, Emergency Task Force (a special police unit, also jocularly said to stand for Extra-Thick Fuzz)
1473	ETH, Ethiopia (ISO 3166 trigram)
1474	ETI, Extra-Terrestrial Intelligence
1475	ETLA, Extended TLA
1476	ETM- Electronic Technical Manual,Enhanced Thematic Mapper
1477	ETOPS, Extended-range Twin-engine Operational Performance Standards (aviation)
1478	ETT, Embedded Training Team
1479	eu, Basque language (ISO 639-1 code)
1480	Eu, Europium
1481	EU- Europa Island (FIPS 10-4 country code), European Union
1482	EUCOM, (U.S.) European Command
1483	EUR, euro (ISO 4217 currency code)
1484	eus, Basque language (ISO 639-2 code)
1485	EUUSA, European Union and United States of America
1486	EV, Exavolt
1487	EVA- Earned Value Analysis,Economic value added,Ethylene-Vinyl Acetate,Extra-Vehicular Activity
1488	EVIL, Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1489	EW, Electronic Warfare, Exawatt
1490	ewe, Ewe language (ISO 639-2 code)
1491	EWR, Newark Liberty International Airport (IATA airport code)
1492	EWTN, Eternal Word Television Network
1493	EXFOR, Experimental Force (military)
1494	EXREP, Expeditious Repair (SM&R code)
1495	EZ, Czech Republic (FIPS 10-4 country code), Extraction Zone
1496	f, Femto
1497	F, Farad,Fluorine
1498	fa, Persian language (ISO 639-1 code)
1499	FA,Food Addicts in Recovery Anonymous
1500	fA, Femtoampere
1501	FA, Field Artillery,Financial Aid,Football Association (England)
1502	FAA, U.S. Federal Aviation Administration,Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1503	FAAD, Forward Area Air Defence
1504	FAADEZ, Forward Area Air Defence Engagement Zone
1505	FAAN, Fellow of the American Academy of Neurology
1506	FAAFP,Fellow of the American Academy of Family Physicians
1507	FAAN, Fellow of the American Academy of Nursing
1508	FAAQ,(a/i) Frequently Asked and Anticipated Questions (cf. FAQ)
1509	FAASV, Field Artillery Ammunition Supply Vehicle
1510	FAB, Feline Advisory Bureau (UK feline charity)
1511	FAC, Forward Air Controller,Front of Allies for Change,Frontal Affinity Chromatography,Full Aperture Calibrator
1512	FACA, (US) Federal Advisory Committee Act
1513	FACH, Fuerza Aérea de Chile
1514	FACN, Fellow of the American College of Nutrition
1515	FACP, Fellow of the American College of Physicians
1516	FACS, Fellow of the American College of Surgeons, Formal Aspects of Computing Science,Fluorescent-activated cell sorting
1517	FACTS, Flexible Alternating Current Transmission System
1518	FAD, Flavin Adenine Dinucleotide,Fuck A Duck, Funding Authorization Document
1519	FAH, Federation of American Hospitals,Fine Arts and Humanities,Foreign Affairs Handbook
1520	FAM, Foreign Affairs Manual
1521	fao, Faroese language (ISO 639-2 code)
1522	FAO, Food and Agriculture Organization
1523	FAPA,Fellow of the American Psychological Association
1524	FAPHA,Fellow of the American Public Health Association
1525	FARP, Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1526	fas, Persian language (ISO 639-2 code)
1527	FAS, Federation of American Scientists,Fetal Alcohol Syndrome
1528	FASCAM, Family of Scatterable Mines[1]
1529	FASD, Fetal Alcohol Spectrum Disorder
1530	FASEB,(a/i) Federation of American Societies for Experimental Biology
1531	FAT, Field Artillery Tractor,File Allocation Table
1532	FAVS, Future Armoured Vehicle System
1533	FAW, Football Association of Wales
1534	FB,Facebook, An on-line social network
1535	FBCS, Fellow of the British Computer Society
1536	FBI, Federal Bureau of Investigation
1537	FBIS, Foreign Broadcast Information Service
1538	FBIDST, Fellow of the British Institute of Dental and Surgical Technologists
1539	FBM, Board foot
1540	FBR- Fast Breeder Reactor,Foundation for Biomedical Research,Friedman, Billings, Ramsey (now known as Arlington Asset Investment)
1541	FBS-Federal Bureau of Statistics (Pakistan),Fetal bovine serum,Football Bowl Subdivision (U.S. college football),Fukuoka Broadcasting Corporation,FC[edit]
1542	fC, Femtocoulomb
1543	FC- Fire Control,Football Club, Funnel Cloud (METAR Code)
1544	FCA- Fellowship of Christian Athletes,Fiat Chrysler Automobiles,Fraction of Combat Active forces
1545	FCC, U.S. Federal Communications Commission
1546	FCE, First Certificate in English
1547	FCF, Financial Free Cash Flow
1548	FCLA,Fraud Claims Law Associate
1549	FCM- Federation of Canadian Municipalities,Fogarty's Cove Music
1550	FCO, UK Foreign and Commonwealth Office
1551	FCS- Football Championship Subdivision (U.S. college football),Future Combat System
1552	FCW, Florida Championship Wrestling
1553	FCZ, Forward Combat Zone
1554	FD, Falun Dafa
1555	FDA, Food and Drug Administration (U.S.)
1556	FDC, Federal Detention Center (U.S.),Fire Direction Centre
1557	FDDI, Fibre Distributed Data Interface
1558	FDBK,(I) Feedback
1559	FDR, Flight Data Recorder,Franklin Delano Roosevelt
1560	Fe, Iron (Latin Ferrum)
1561	FE, Fully Exposed (armoured vehicle target, as opposed to Hull-Down)
1562	FEAR, First Encounter Assault Recon,False Evidence Appears Real
1563	FEAST,(a/i) Forum for European-Australian Science and Technology Cooperation
1564	FEATS, Festival of European Anglophone Theatrical Societies link title
1565	FEBA, Forward Edge of the Battle Area
1566	FED,(a/i) Field emission display
1567	FEDEP, Federation Development Process (Simulation)
1568	FEF, Frontal Eye Field (neurophysiology)
1569	FEMA-(a/i) Farm Equipment Manufacturers Association,(a/i) U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1570	FENS,(a/i) Federation of European Neuroscience Societies
1571	FEP, Firepower Enhancement Program,Fleet satellite (FLTSAT) Extremely high frequency (EHF) Package
1572	FES, Flywheel Energy Storage
1573	FEST, Frankfurt English Speaking Theatre link title
1574	FET, Field-effect transistor
1575	FEZ,(a/i) Fighter Engagement Zone
1576	ff, Fula language (ISO 639-1 code)
1577	fF, Femtofarad
1578	FF- Final Fantasy, Firefox (Web browser)
1579	FFA- Football Federation Australia,Pacific Islands Forum Fisheries Agency,Free-Fire Area,Fusiform Face Area,Future Farmers of America (today the National FFA Organization)
1580	FFB, Frum From Birth (referring to an observant Jew born into a religiously observant family)
1581	FFC, Free For Chat
1582	FFE, Fukuoka Futures Exchange
1583	FFG, Guided Missile Frigate (hull classification symbol)
1584	FFOV, Forward Field Of View
1585	FFS, For Fuck's Sake
1586	FFT- Fast Fourier Transform,Final Fantasy Tactics,FG[edit]
1587	FG, Falun Gong
1588	fg, Femtogram
1589	FG, Fog (METAR Code),French Guiana (FIPS 10-4 territory code)
1590	FGR, Flickr Group Roulette
1591	fH, Femtohenry
1592	FHFIF, Foster's Home for Imaginary Friends
1593	FHI, Family Health International, Fuji Heavy Industries, Ltd.
1594	fi, Finnish language (ISO 639-1 code)
1595	FI, Finland (ISO 3166 digram; FIPS 10-4 country code)
1596	FIB, Fucking Illinois Bastard (Wisconsin slang, variants exist)
1597	FIBUA,(i/a) Fighting In Built-Up Areas
1598	FIC, Fellowship for Intentional Community
1599	FID, Foreign Internal Defence
1600	FIE, Fly-In Echelon
1601	FIFO, First In, First Out
1602	FIFRA, Federal Insecticide, Fungicide, and Rodenticide Act
1603	FIGJAM, Fuck I'm Good, Just Ask Me
1604	fij, Fijian language (ISO 639-2 code)
1605	FILO, First In, Last Out (see also LIFO)
1606	FIMPT, Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1607	fin, Finnish language (ISO 639-2 code)
1608	FIN, Finland (ISO 3166 trigram)
1609	FIPS, Federal Information Processing Standard
1610	FIRES,Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1611	FISH, Fluorescence In-Situ Hybridisation
1612	FiST, Fire Support Team
1613	FITS, Flexible Image Transport System
1614	FIU, Florida International University
1615	fj, Fijian language (ISO 639-1 code)
1616	fJ, Femtojoule
1617	FJ, Fiji (ISO 3166 digram; FIPS 10-4 country code)
1618	FJD, Fiji dollar (ISO 4217 currency code)
1619	FJI, Fiji (ISO 3166 trigram)
1620	FJN, Financial Job Network
1621	fK, Femtokelvin
1622	FK, Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1623	FKP, Falkland Islands pound (ISO 4217 currency code)
1624	FKSM, Fort Knox Supplemental Manual
1625	FKT, Fastest Known Time
1626	fL, Femtolitre
1627	FL, Florida (postal symbol)
1628	FLA, Florida, Front Line Assembly,Future Large Aircraft
1629	FLAB, Four-letter abbreviation
1630	FLAC,(a/i) Free Lossless Audio Codec
1631	FLAC,(a/i) Free Legal Advice Centres
1632	FLB, Forward Logistics Base
1633	FLET,(a/i) Forward Line of Enemy Troops
1634	FLG, Falun Gong
1635	FLIP, Flight Information Publication
1636	FLIR, Forward Looking InfraRed (sensor)
1637	FLK, Falkland Islands (ISO 3166 trigram)
1638	FLOT,(a/i) Forward Line of Own Troops
1639	FLSA, Fair Labor Standards Act
1640	FLQ, Free Legal Questions
1641	FLTSAT, Fleet Satellite
1642	FLTSATCOM, Fleet Satellite Communication System
1643	FLUBOS, Fat, Lazy, Useless, Bag Of Shit
1644	FM, Factory Mutual http://fmglobal.com
1645	fm, Femtometre
1646	Fm, Fermium
1647	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)
1648	FMC- Federal Magistrates' Court (an Australian federal court, formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1649	FMCA, Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1650	FMCAfam, Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1651	FME, Formal Methods Europe
1652	FMECA, Failure Modes and Effect Criticality Analysis
1653	FMJD, Fédération Mondiale du Jeu de Dames[2]
1654	FMLA, Family Medical Leave Act
1655	fMRI, Functional Magnetic Resonance Imaging
1656	FMS- Federal Magistrates Service (an Australian federal court, now FMC), Flight Management System,Foreign Military Sales
1657	FMSF, False Memory Syndrome Foundation
1658	FMTV, Family of Medium Tactical Vehicles
1659	FMCG, (Fast Moving Consumer Goods)
1660	fN, Femtonewton
1661	FNA, Functional Needs Analysis
1662	fo, Faroese language (ISO 639-1 code)
1663	FO, Faroe Islands (ISO 3166 digram; FIPS 10-4 territory code), Force Operations (military),Forward Observer,Frame Optional (military symbology)
1664	FOAD, Fuck Off And Die
1665	FOAF, Friend Of A friend
1666	FoB, Free On Board (shipping)
1667	FOB,(i/a) Forward Operating Base
1668	FOC, Full Operational Capability,First of Class
1669	FoE, Friends of the Earth
1670	FOGC, Federal Oil and Gas Council
1671	FOH, Front Of House
1672	FOIA, Freedom of Information Act
1673	FOM, Federation Object Model
1674	FONSI, Finding of No Significant Impact
1675	FOO, Forward Observation Officer
1676	FOR, Field Of Regard,Frame Of Reference
1677	Fortran, The IBM Mathematical FORmula TRANslating System (programming language)
1678	FOS, Florida Ornithological Society,Full Operational Status
1679	FoS, Family of Systems
1680	FOSE, Fallout 3 Script Extender
1681	FOSE, Federal Office Systems Expo
1682	FOT, Free on truck
1683	FOTA, Fellow of the Orthodontic Technicians Association
1684	FOTC,Flight of the Conchords
1685	FOUO, For Official Use Only
1686	FOV, Field Of View
1687	FP, French Polynesia (FIPS 10-4 territory code)
1688	fps, frames per second (motion pictures, television, computer graphics)
1689	FPS- Fire Prevention System,First Person Shooter (computer/video games)
1690	FOOP, Friends Of Organ Pipes (Volunteer group)
1691	FQ, Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1692	FQDN, Fully Qualified Domain Name
1693	fr, French language (ISO 639-1 code)
1694	Fr, Francium
1695	FR, France (FIPS 10-4 country code; ISO 3166 digram)
1696	fra, French language (ISO 639-2 code)
1697	FRA- Federal Railroad Administration, France (ISO 3166 trigram)
1698	FRAGO, Fragmentary Order (military)
1699	FRAND, Fair, reasonable, and non-discriminatory (concept in standards-setting and intellectual property law)
1700	FRCP- Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1701	FRICBM, Full Range ICBM
1702	frr, North Frisian language (ISO 639-2 code)
1703	FRO, Faroe Islands (ISO 3166 trigram)
1704	FRS- Fellow of the Royal Society,U.S. Federal Reserve System
1705	FRSA, Fellow of the Royal Society of Art
1706	fry, West Frisian language (ISO 639-2 code)
1707	FRY, Federal Republic of Yugoslavia
1708	fs, Femtosecond
1709	fS, Femtosiemens
1710	FS- Fire Support (military), French Southern and Antarctic Territories (FIPS 10-4 territory code)
1711	FSA- Fire Support Area,UK Food Standards Agency,Functional Solution Analysis
1712	FSC- Federal Supply Classification, Forest Stewardship Council (ecological pressure group
1713	FSCL, Fire Support Co-ordination Line
1714	FSE, Fire Support Element
1715	FSF, Free Software Foundation
1716	FSH, Follicle Stimulating Hormone
1717	FSI, Fuel Stratified Injection
1718	FSM- Federated States of Micronesia (ISO 3166 trigram), Flying Spaghetti Monster (satirical religion)
1719	FSO- Fire Support Officer,Flotilla Staff Officer,Foreign Service Officer
1720	FSS, Fire Support Station
1721	FSSP, Families of Structurally Similar Proteins
1722	FST- Finance Support Team,Finlands Svenska Television (Finland's Swedish-language television),Future Soviet Tank (Cold War era)
1723	FSTC, Foreign Science Technology Center (now NGIC)
1724	fT, Femtotesla
1725	FTC, Federal Trade Commission
1726	FTE, Full Time Equivalent
1727	FTL, Faster Than Light
1728	FTP, File Transfer Protocol
1729	FTW, For The Win (a commonly used phrase used online to indicate success) F@#K The World, Forever Together Where ever (gang slogan)
1730	FTS, Flight Termination System used during some rocket launches
1731	FTS, Fuck That Shit
1732	FU, Smoke (METAR Code)
1733	FUBAR, Fucked/Fouled Up Beyond All Recognition/Repair
1734	FUCK, For, Unlawful, Carnal, Knowledge (Van Halen album title)
1735	FUD, Fear, Uncertainty & Doubt (marketing strategy)
1736	ful, Fula language (ISO 639-2 code)
1737	fV, Femtovolt
1738	fW, Femtowatt
1739	FW, Forward
1740	FWC, Football World Cup
1741	FWF, Fixed Word Format
1742	FWI, French West Indies
1743	FWIW, For What It's Worth
1744	FWS, U.S. Fish and Wildlife Service
1745	FWT, Fresh Water Tank
1746	FX, Firefox,Fox Extended, Metropolitan France (ISO 3166 digram; obsolete 1997),Special effect
1747	FXX, Metropolitan France (ISO 3166 trigram; obsolete 1997)
1748	fy, West Frisian language (ISO 639-1 code)
1749	FY, Fiscal Year, Former Yugoslav Republic of Macedonia (NATO country code)
1750	FYA, For Your Agenda
1751	FYDP, Five-Year Defense Plan (U.S.)
1752	FYI, For Your Information
1753	FYROM, Former Yugoslav Republic of Macedonia
1754	FZDZ, Freezing Drizzle (METAR Code)
1755	FZFG, Freezing Fog (METAR Code)
1756	FZRA, Freezing Rain (METAR Code)
1757	g, Gram
1758	G, Gauss, General Audiences (movie rating)
1759	G1, Assistant Chief-of-Staff, Personnel
1760	G2, Assistant Chief-of-Staff, Intelligence
1761	G3,many, including Heckler & Koch G3; see entry, Assistant Chief-of-Staff, Operations and Plans
1762	G4, Generation Four PowerPC microprocessor, Assistant Chief-of-Staff, Logistics
1763	G5, Generation Five PowerPC microprocessor, Assistant Chief-of-Staff, Public Affairs
1764	G6, Assistant Chief-of-Staff, Information Technology, Group of 6 (France, Germany, United States, Japan, United Kingdom, Italy) (1975)
1765	G7, Assistant Chief-of-Staff, Training, Group of 7 (G6 + Canada) (1976)
1766	G8, Assistant Chief-of-Staff, Finance, Group of 8 (G7 + Russia) (1998)
1767	G9, Assistant Chief-of-Staff, Civil-Military Co-operation (CIMIC)
1768	G10, Group of 10 (G7 + Belgium, Netherlands, Sweden, Switzerland; numbering 11 in fact)
1769	G15, Group of 15 (subset of G77, formed 1989: Algeria, Argentina, Brazil, Chile, Egypt, India, Indonesia, Jamaica, Kenya, Nigeria, Malaysia, Mexico, Peru, Senegal, Sri Lanka, Venezuela and Zimbabwe; currently numbers 17)
1770	G20, Group of 20 (G8 + Argentina, Australia, Brazil, China, India, Indonesia, Mexico, Saudi Arabia, South Africa, South Korea, Turkey + current European Union presiding country) (1999)
1771	G24, Group of 24 (subset of G77, formed 1971: Algeria, Argentina, Brazil, Colombia, Côte d'Ivoire, Democratic Republic of the Congo, Egypt, Ethiopia, Gabon, Ghana, Guatemala, India, Iran, Lebanon, Mexico, Nigeria, Pakistan, Peru, Philippines, South Africa, Syria, Sri Lanka, Trinidad and Tobago and Venezuela)
1772	G77, Group of 77 (issued from the United Nations Conference on Commerce and Development, 1964; currently numbers 133)
1773	Ga, Gallium,Gigaannum
1774	GA, Gabon (ISO 3166 digram),The Gambia (FIPS 10-4 country code), Gamblers Anonymous,Georgia (postal symbol),Gigaampere,Goa (Indian state code)
1775	GAAR, General Anti-Avoidance Rule (tax evasion)
1776	GAB, Gabon (ISO 3166 trigram)
1777	GABA, Gamma-AminoButyric Acid
1778	GAD, Generalized Anxiety Disorder
1779	GAF, Garfield and Friends
1780	GALCIT, Guggenheim Aeronautical Laboratory, California Institute of Technology
1781	GAO, U.S. Government Accountability Office
1782	GAW, Global Atmospheric Watch
1783	GB, Gabon (FIPS 10-4 country code),United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10]
1784	GBBC, Great (Global) Backyard Bird Count
1785	GBE, Knight/Dame Grand Cross of the Order of the British Empire
1786	GBH- Great Bash Heel (Japanese professional wrestling stable),Gregory Bonner Hale (British design and advertising agency),Grievous bodily harm
1787	GBP, United Kingdom pound sterling (ISO 4217 currency code)
1788	GBR, United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1789	GBU, Glide-Bomb Unit,Global Business Unit
1790	GC- East Germany (NATO country code; obsolete 1990), General classification (cycling),General counsel,George Cross (British civil decoration), Gigacoulomb [Grindr cruise]
1791	GCA, Graduate in Claims Administration
1792	GCD,see entry
1793	GCF, Greatest Common Factor
1794	GCI, Ground-controlled interception
1795	GCN, Gamma-ray burst Coordination Network
1796	GCS, Global Coordinate System
1797	GCSE, General Certificate of Secondary Education (UK)
1798	gd, Scottish Gaelic language (ISO 639-1 code)
1799	Gd, Gadolinium
1800	GD, Grenada (ISO 3166 digram)
1801	GDC, Game Developers Conference,General Dental Council
1802	GDL, Game Definition Language
1803	GDP, General Dental Practitioner (UK),Gross Domestic Product
1804	GDR, German Democratic Republic (cf. DDR)
1805	GDR, General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1806	GDW, Game Designers Workshop
1807	Ge, Germanium
1808	GE, General Electric,Genetic Engineering (cf. GM), Georgia (ISO 3166 digram)
1809	GEBCO, General Bathymetric Chart of the Oceans
1810	GEC, Great Engineering Challenge
1811	GED, General Educational Development (high school equivalency credential in the U.S. and Canada)
1812	GEEP, Geophysical Equipment Exploration Platform
1813	GEL, Georgian lari (ISO 4217 currency code),Gilbert and Ellice Islands (ISO 3166 trigram; obsolete 1977)
1814	GEMA, Gas and Electricity Markets Authority,Georgia Emergency Management Agency, Gesellschaft für musikalische Aufführungs- und mechanische Vervielfältigungsrechte (German performance rights organisation), Global Engine Manufacturing Alliance
1815	GEN, Full General (four stars) in the U.S. Army
1816	GEO, Geostationary Earth Orbit, Georgia (ISO 3166 trigram)
1817	GEOS, Graphical Environment Operating System
1818	GEQ, Equatorial Guinea (IOC trigram, but not FIFA or ISO 3166)
1819	GER, Germany (IOC and FIFA trigram, but not ISO 3166)
1820	GeV, Gigaelectron-volt
1821	GEV, Ground Effect Vehicle
1822	GF- French Guiana (ISO 3166 digram),Gigafarad
1823	GFCF- Gluten-free, casein-free diet,Gross fixed capital formation
1824	GFCI, Ground Fault Circuit Interruptor (aka GFI)
1825	GFDL, GNU Free Documentation License
1826	GFE- Girlfriend experience (used in escort services),Good Faith Estimate,Government Furnished Equipment
1827	GFI, Ground Fault Interruptor (aka GFCI)
1828	GFL, German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1829	GFN, Global Footprint Network
1830	GG, Georgia (FIPS 10-4 country code)
1831	GGK,Good God Karma
1832	GGP- General Game Playing,General Growth Properties (U.S. shopping center owner),GH[edit]
1833	GH, Ghana (ISO 3166 digram; FIPS 10-4 country code),Gigahenry
1834	GHA, Ghana (ISO 3166 trigram)
1835	GHB, gamma-Hydroxybutyric acid
1836	GHC, Ghanan cedi (ISO 4217 currency code)
1837	Gi, Gibi
1838	GI, Galvanised Iron,Gastro-Intestinal,General Issue, Gibraltar (ISO 3166 digram; FIPS 10-4 territory code), Government Issue
1839	GIB, Gibraltar (ISO 3166 trigram)
1840	GIF, Graphics Interchange Format
1841	GIG, Global Information Grid
1842	GIGO, Garbage In Garbage Out (computing)
1843	GIMP, GNU Image Manipulation Program
1844	GIN, Guinea (ISO 3166 trigram), Guidelines International Network
1845	GINK,Going Insane Not Knowing,orig. Colorado 2010 M.Kalfas
1846	GINO, Godzilla In Name Only
1847	GIP, Gibraltar pound (ISO 4217 currency code)
1848	GIS, Geographic Information System, Google Image Search
1849	GISS,(a/i) General Impression of Size and Shape,Goddard Institute for Space Studies
1850	GJ, Gigajoule,Grenada (FIPS 10-4 country code),Gujarat (Indian state code)
1851	GJD, Geocentric Julian Day
1852	GK, Gigakelvin,Guernsey (FIPS 10-4 territory code)
1853	gl, Galician language (ISO 639-1 code)
1854	GL- Gigalitre, Graphics Language, Greenland (ISO 3166 digram; FIPS 10-4 territory code), Grenade Launcher
1855	gla, Scottish Gaelic language (ISO 639-2 code)
1856	GLAAD, Gay and Lesbian Alliance Against Defamation
1857	GLAC, General Ledger Accounting Code
1858	GLAST, Gamma-ray Large Area Space Telescope
1859	GLBA, Gramm-Leach-Bliley Act
1860	GLC, Gas-liquid chromatography
1861	gle, Irish language (ISO 639-2 code)
1862	glg, Galician language (ISO 639-2 code)
1863	GLINT- Gallium-arsenide Laser Illuminator for Night TV,Gated Laser Illuminator for Narrow Television, Gated Laser Intensifier (tape),Gospel Literature International,Graphical Linux Installation Tool
1864	GLP, Guadeloupe (ISO 3166 trigram)
1865	GLUT,(a/i) OpenGL Utility Toolkit
1866	glv, Manx language (ISO 639-2 code)
1867	GLV, Gained Life Value
1868	Gm, Gigametre
1869	GM- The Gambia (ISO 3166 digram), GameMaster (role-playing),General Motors,Genetically Modified, Germany (FIPS 10-4 country code), Guru Meditation (computing)
1870	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
1871	GMB- The Gambia (ISO 3166 trigram), General, Municipal, Boilermakers (and Allied Trade Union)
1872	GMC- U.K. General Medical Council,Gospel Music Channel
1873	GMD, Gambian dalasi (ISO 4217 currency code)
1874	GMFSC, Ground Mobile Forces Satellite Communications
1875	GMI- Generic Model Interface,Geometry Model Instance
1876	GML-Generalized Markup Language,Geography Markup Language,Game Maker Language,Graph Modelling Language,Graphical Motion Language,GUI Markup Language
1877	GMO, Genetically Modified Organism
1878	GMPCS, Global Mobile Personal Communications by Satellite
1879	GMT- Giant Magellan Telescope,Greenwich Mean Time,GN[edit]
1880	gn, Guaraní language (ISO 639-1 code)
1881	GN- Giganewton,Guinea (ISO 3166 digram)
1882	GNAS, Grand National Archery Society
1883	GNB, Guinea-Bissau (ISO 3166 trigram)
1884	GNF, Guinean franc (ISO 4217 currency code)
1885	GNOME, GNU Network Object Model Environment
1886	GNP, Gross National Product
1887	GNQ, Equatorial Guinea (ISO 3166 trigram)
1888	GnRH, Gonadotropin-Releasing Hormone
1889	GNU, GNU's Not Unix
1890	GO, Glorioso Islands (FIPS 10-4 territory code)
1891	GOA- General of the Army (United States only), Gun Owners of America
1892	GOAT, Greatest of all time (LL Cool J album title)
1893	GOC, General Officer Commanding
1894	GOES, Geostationary Operational Environmental Satellite
1895	GOP, Grand Old Party
1896	gorp, granola, oats, raisins, peanuts (another name for trail mix), probably a backronym
1897	GOSC,(a/i) General Officer Steering Committee
1898	GOSH, Great Ormond Street Hospital
1899	GOSP, Gas/Oil Separation Plant
1900	GOTS, Government off-the-shelf
1901	GOYADIN, Get Off Your Arse, Do It Now (anti-procrastination mantra)
1902	GP, General Practitioner,General Purpose,Grand Prix, Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1903	GPA, Grade Point Average
1904	GPC, Global Path Cache
1905	GPG, GNU Privacy Guard
1906	GPIB, General-Purpose Instrumentation/Interface Bus
1907	GPL, GNU General Public License
1908	GPMP, General Purpose Macro Processor
1909	GPO, General Post Office
1910	GPPC, Genetics and Public Policy Center
1911	GPR, Ground-Penetrating Radar
1912	GPS, General Problem Solver,Global Positioning System
1913	GPT, GEC-Plessey Telecommunications,General Purpose Technology,Get Paid To website
1914	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]
1915	GR, Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1916	GRAIL, Gravity Recovery and Interior Laboratory
1917	GRAS, Generally recognized as safe (FDA list)
1918	GRB, Gamma-Ray Burst
1919	GRC, Greece (ISO 3166 trigram)
1920	GRD, Grenada (ISO 3166 trigram)
1921	GRE- Graduate Record Examination, Greece (IOC and FIFA trigram, but not ISO 3166)
1922	grep, [search] Globally for Regular Expression, Print [lines]
1923	GRid,Global Release Identifier, a music industry identifier from the RIAA and IFPI
1924	GRID, Gay-Related Immune Deficiency (original name of AIDS)
1925	GriT, Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1926	GRL, Greenland (ISO 3166 trigram)
1927	GRN- Grenada (IOC and FIFA trigram, but not ISO 3166), Goods Received Note
1928	grn, Guaraní language (ISO 639-2 code)
1929	GRP, Graphite-reinforced plastic, see Carbon-fiber-reinforced polymer
1930	Gs, Gigasecond
1931	GS- General Schedule (US civil service pay scale),General Support, Gigasiemens,South Georgia and the South Sandwich Islands (ISO 3166 digram)
1932	GSR, Gun Shot Residue
1933	GSA, U.S. General Services Administration
1934	GSD, Graphical Situation Display
1935	GSGB,(God send glamour boy 9-10/10)
1936	GSK, GlaxoSmithKline [good sexual karma]
1937	GSN,(a/i) Game Show Network
1938	GSO, General Services Officer (U.S. Department of State)
1939	GSOH, Good Sense Of Humour
1940	GSP,Georges St-Pierre (Canadian MMA fighter)
1941	GSS, Generic Security Services
1942	GST, Goods and Services Tax (Australia, Canada, and other countries)
1943	GSW, Gunshot wound
1944	GT, Gigatesla, Gran Turismo,Grand Touring, Guatemala (FIPS 10-4 country code; ISO 3166 digram)
1945	GTA, Grand Theft Auto
1946	GTB, Get to bed, namely to get a new job after a long time of searching, usually following a phone call
1947	GTC, Gran Telescopio Canarias (Spanish, Canaries Great Telescope)
1948	GTD, Getting Things Done
1949	GTG, Got To Go (Internet chat)
1950	GTK, Good To Know (Internet chat)
1951	GTGN, Getty Thesaurus of Geographic Names
1952	GTM, Guatemala (ISO 3166 trigram)
1953	GTQ, Guatemalan quetzal (ISO 4217 currency code)
1954	GTV, Gross Tumor Volume quetzal (ISO 4217 currency code)
1955	gu, Gujarati language (ISO 639-1 code)
1956	GU, Guam (postal symbol; ISO 3166 digram)
1957	GUA, Guatemala (IOC and FIFA trigram, but not ISO 3166)
1958	GUF, French Guiana (ISO 3166 trigram)
1959	GUILT, Gangliated Utrophin Immuno Latency Toxin
1960	guj, Gujarati language (ISO 639-2 code)
1961	GULCR, Grupo de Usuarios de Linux de Costa Rica
1962	GUT, Grand Unification Theory
1963	gv, Manx language (ISO 639-1 code)
1964	GV, Gigavolt,Guinea (FIPS 10-4 country code)
1965	GW, Games Workshop,Germ Warfare, Gigawatt, Guided Weapon, Guinea-Bissau (ISO 3166 digram)
1966	GWARS, Ground Warfare System (simulation)
1967	GWAS, Grand Western Archery Society
1968	GWOT, Global War on Terrorism
1969	GWS, Gulf War Syndrome,Greater Western Sydney
1970	GXA, Global XML Web Services Architecture
1971	GXE, Gene-enivronment interaction
1972	GXF, General Exchange Format
1973	GXH, IATA code of Gannan Xiahe Airport
1974	GXL, Graph eXchange Language
1975	GXM, Matrox Graphics eXpansion Module
1976	GXP, Grid Exit Point, Global Xchange Programme, Indication of highest performance level on some Pontiac vehicles
1977	GxP, Good X Practice (X can mean: clinical, manufacturing, pharmaceutical, etc.)
1978	GXY, IATA code of Greeley-Weld County Airport
1979	GY, Guyana (FIPS 10-4 country code; ISO 3166 digram)
1980	GYD, Guyana dollar (ISO 4217 currency code)
1981	GYY, Gary/Chicago International Airport (IATA Airport Code)
1982	GZ, Gaza Strip (FIPS 10-4 territory code), Ground Zero
1983	GZK, Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1984	h, Hecto
1985	H, Henry,Hydrogen
1986	ha, Hausa language (ISO 639-1 code),Hectare
1987	HA, Haiti (FIPS 10-4 country code), High Availability
1988	HAARP, High Frequency Active Auroral Research Program
1989	HAART, Highly Active Anti-Retroviral Therapy
1990	HAI, Human Awareness Institute
1991	HAL, Hardware Abstraction Layer
1992	HALO, High Altitude Low Opening (parachute jump)
1993	HALT- Highly Accelerated Life Test, Hungry Angry Lonely Tired
1994	HAM, Amateur radio operator
1995	HANS, Head And Neck Support (device used in many race cars)
1996	HARM, High-speed Anti-Radiation Missile
1997	hat, Haitian Creole language (ISO 639-2 code)
1998	HAT,(i/a) Highest Astronomical Tide (nautical charts), Hungarian Automated Telescope
1999	hau, Hausa language (ISO 639-2 code)
2000	HAW, Heavy Antitank Weapon
2001	HAWK, Homing All the Way Killer (air defence system)
2002	HAZ, Heat-Affected Zone
2003	HAZMAT, Hazardous Materials
2004	HBCD, HexaBromoCycloDodecane
2005	HBCI, Home Banking Computer Interface
2006	HBO, Home Box Office
2007	HBR, Harvard Business Review
2008	HBT, Heterojunction Bipolar Transistor
2009	HBV, Hepatitis B Virus
2010	HCCI, Homogeneous Charge Compression Ignition
2011	HCF, Highest Common Factor
2012	HCI, Human-Computer Interaction/Interface
2013	HCSC, Higher Command and Staff Course
2014	HCT, Higher Colleges of Technology, tertiary education institution in the United Arab Emirates (UAE)
2015	HD- Henry Draper (star catalogue),Hull-Down (armoured vehicle target, as opposed to Fully Exposed),High Definition,Huntington's Disease
2016	HDD- Hard Disk Drive,High-Density Disk
2017	HDL, High-Density Lipoprotein
2018	HDM, Human Decision-Making
2019	HDMI,High Definition Multimedia Interface
2020	HDR- Hard disk recorder,Henningson, Durham & Richardson (founders of the engineering and construction firm now known by their initials),High dynamic range, a term used in both digital imaging and 3D rendering,Hot Dry Rock (experimental geothermal technology),Human Development Report (UN publication)
2021	HDRA, Henry Doubleday Research Association
2022	HDTV, High-Definition Television
2023	he, Hebrew language (ISO 639-1 code)
2024	He, Helium
2025	HE, High Explosive
2026	HEAT, High Explosive Anti-Tank (ammunition)
2027	heb, Hebrew language (ISO 639-2 code)
2028	HEBA, Hellenic Basketball Clubs Association
2029	HEER, High-Explosive Extended Range (ammunition)
2030	HEIC, Honourable East India Company
2031	HEMP, High-Altitude Electromagnetic Pulse
2032	HEO- High Earth Orbit, Highly Elliptical Orbit
2033	HEOSS, High Earth Orbit Space Surveillance
2034	HEP, High-Explosive Plastic (ammunition)
2035	HEPA,(a/i) High-Efficiency Particulate Air (filter)
2036	her, Herero language (ISO 639-2 code)
2037	HESH, High-Explosive, Squash-Head (ammunition)
2038	HESV, Heavy Engineering Support Vehicle
2039	HETT, Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
2040	HEU, Highly Enriched Uranium
2041	Hewitts, Hills in England, Wales and Ireland over Two Thousand feet (with topographic prominence of at least 30 m)
2042	Hf, Hafnium
2043	HF, High Frequency
2044	HFE, Human Fertilisation and Embryology (UK Act)
2045	HFE, The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
2046	HFEA, Human Fertilisation and Embryology Authority (UK)
2047	Hg, Mercury (Latin Hydrargyrum)
2048	HGC, UK Human Genetics Commission
2049	HGF, Human Growth Factor
2050	HGTV, Home & Garden Television
2051	HHB,Ha Ha Bonk,The noise made when you laugh your head off. Used instead of LOL...
2052	hi, Hindi language (ISO 639-1 code)
2053	HI, Hawaii (postal symbol)
2054	HIH, His (or Her) Imperial Highness
2055	HIM, His (or Her) Imperial Majesty
2056	HIMAD, High to Medium Altitude Air Defence (see also H/MAD)
2057	HIMEZ, High Altitude Missile Engagement Zone
2058	HIMYM,How I Met Your Mother
2059	hin, Hindi language (ISO 639-2 code)
2060	HIPAA, U.S. Health Insurance Portability and Accountability Act
2061	Hipparcos, HIgh Precision Parallax COllecting Satellite
2062	Hird, Hurd of interfaces representing depth (cf. HURD)
2063	HiRISE, High Resolution Imaging Science Experiment
2064	HIT, Health Information Technology
2065	HIV, Human Immunodeficiency Virus
2066	HIWT, Hobart Institute of Welding Technology
2067	HJD, Heliocentric Julian Day
2068	HK, Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
2069	HKD, Hong Kong dollar (ISO 4217 currency code)
2070	HKG, Hong Kong (ISO 3166 trigram)
2071	HKS, HyperKinetic Syndrome
2072	hL, Hectolitre
2073	HL, Holding Line
2074	HLA, High Level Architecture (simulation),Human Leukocyte Antigen
2075	HLL, High-Level Language
2076	HLN, Headline News
2077	HLOS, High Level Output Specification
2078	HLVW, Heavy Logistics Vehicle, Wheeled
2079	HM, Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
2080	HMCE, Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
2081	HMCS- Her/His Majesty's Canadian Ship,Her Majesty's Courts Service (former UK agency; succeeded by Her Majesty's Courts and Tribunals Service)
2082	HMD, Heard and McDonald Islands (ISO 3166 trigram)
2083	HMF, HydroxyMethyl Furfural
2084	HMM, Hidden Markov model
2085	hmo, Hiri Motu language (ISO 639-2 code)
2086	HMO, Health maintenance organization
2087	HMP, Her Majesty's Prison
2088	HMRC, Her/His Majesty's Revenue and Customs
2089	HMS- Helmet-mounted display,Her/His Majesty's Ship (Royal Navy)
2090	HMSO, Her Majesty's Stationery Office
2091	HMV, His Master's Voice
2092	HN, Honduras (ISO 3166 digram)
2093	HND, Honduras (ISO 3166 trigram)
2094	HNL, Honduran lempira (ISO 4217 currency code)
2095	ho, Hiri Motu language (ISO 639-1 code)
2096	Ho, Holmium
2097	HO, Honduras (FIPS 10-4 country code)
2098	HOLLAND, Hope Our Love Lasts And Never Dies
2099	HOMES,the Great Lakes; Huron, Ontario, Michigan, Erie, Superior
2100	HONY,Humans of New York, a photoblog.
2101	HOPI, Hybrid Optical and Packet Infrastructure (see Internet2, Abilene Network)
2102	HoReCa, Hotel, Restaurant and Catering
2103	HORIZON, Hélicoptère d'observation radar et d'investigation sur zone (French, Zone Investigation and Radar Observation Helicopter)
2104	HOSTAC, Helicopter Operations from Ships Other Than Aircraft Carriers
2105	HOT, Highly Optimised Tolerance
2106	HOTAS, Hands on throttle-and-stick
2107	HOV, High Occupancy Vehicle
2108	hp, horse power
2109	HP, Hewlett-Packard,Hindustan Petroleum, Himachal Pradesh (Indian state code)
2110	HPA, UK Health Protection Agency
2111	HPCL, Hindustan Petroleum Corporation Limited
2112	HPLC, High Performance Liquid Chromatography
2113	HPT, High[er] Payoff Target
2114	HPV, Human Papilloma Virus
2115	HQ, HeadQuarters, Howland Island (FIPS 10-4 territory code)
2116	HQDA, HeadQuarters, Department of the Army
2117	hr, Croatian language (ISO 639-1 code)
2118	HR- Croatia (FIPS 10-4 country code; ISO 3166 digram,from the country's native name of Hrvatska), Haryana (Indian state code), Harvard Revised star catalogue,Human Resources
2119	HRBL, High-level Representation of Behavior Language (original name of the Herbal language)
2120	HRD, Human Resource Development
2121	HRED, (U.S. Army Research Laboratory's) Human Research and Engineering Directorate (Aberdeen Proving Ground, Maryland)
2122	HRF, High iness Forces
2123	HRH, His (or Her) Royal Highness
2124	HRK, Croatian kuna (ISO 4217 currency code)
2125	HRM, His (or Her) Royal Majesty
2126	HRM, Human Resource Management
2127	HRT, Hormone Replacement Therapy
2128	hrv, Croatian language (ISO 639-2 code)
2129	HRV- Croatia (ISO 3166 trigram), High Resolution Visible,HS[edit]
2130	Hs, Hassium
2131	HSBC, The Hong Kong and Shanghai Banking Corporation
2132	HSC, Higher School Certificate
2133	HSM, High School Musical
2134	HSMAD, Human Science/Modeling and Analysis Data
2135	HSN, Home Shopping Network
2136	HSPH, Harvard School of Public Health
2137	HSS- Health Service Support, High-Speed Steel
2138	HSSI, High-Speed Serial Interface
2139	HST,see entry
2140	HSV- Herpes Simplex Virus,Hue Saturation Value (colour model),HT[edit]
2141	ht, Haitian Creole language (ISO 639-1 code)
2142	HTA, HyperText Application
2143	HTC-High Tech Computer Corporation, original name of the company now known simply as HTC,Horry Telephone Cooperative
2144	HTFU, Harden The Fuck Up
2145	HTG, Haitian gourde (ISO 4217 currency code)
2146	HTH, Hope That Helps
2147	HTI, Haiti (ISO 3166 trigram)
2148	HTML, HyperText Markup Language
2149	HTR, Heated Towel Rail
2150	HTS, High-Temperature Superconducting wire
2151	HTTP, HyperText Transfer Protocol
2152	HU, Hungary (ISO 3166 digram; FIPS 10-4 country code)
2153	HUD,(i/a) Head-Up Display,Housing and Urban Development
2154	HUF, Hungarian forint (ISO 4217 currency code)
2155	HUHA, Head up his/her ass (Marine salute; probably a backcronym)
2156	HUMINT, Human Intelligence (military parlance)
2157	hun, Hungarian language (ISO 639-2 code)
2158	HUN, Hungary (ISO 3166 trigram)
2159	HURD, Hird of Unix-Replacing Daemons (cf. Hird)
2160	HVU, High Value Unit (military)
2161	HV, Upper Volta (ISO 3166 digram; obsolete 1984)
2162	HVAC, Heating, ventilation and air conditioning Used in architecture, business and marketing; refers to a building's entire system of heating, moving, or cooling air.
2163	HVAP, High Velocity Armour Piercing (ammunition)
2164	HVHF,High velocity human factors
2165	HVM, High Velocity Missile
2166	HVO, Upper Volta (ISO 3166 trigram; obsolete 1984)
2167	HVP, HarborView Properties,High vacuum process,Hydrolyzed vegetable protein,Human Variome Project,High Velocity Protection,H.V.P. (rapper),High Voltage Protection,High Vapor Pressure,Hub Voice Processor,High-Velocity Projectile,High-Video Pass,High-Velocity Particle
2168	HW, Hardware, High Water (nautical charts)
2169	HWM, Hardware morphing (computer graphics rendering)
2170	HX, IATA code of Hong Kong Airlines, Medical history, Hydrogen halide, Concept automobile by HUMMER
2171	HXB, The glycoprotein Tenascian C
2172	hy, Armenian language (ISO 639-1 code)
2173	hye, Armenian language (ISO 639-2 code)
2174	HYS, Harvard, Yale, Stanford (perennially named as the top three law schools in the U.S.)
2175	hz, Herero language (ISO 639-1 code)
2176	Hz, Hertz
2177	HZ, Haze (METAR Code)
2178	I, Iodine,One (in Roman numerals)
2179	ia, Interlingua language (ISO 639-1 code)
2180	IA, Iowa (postal symbol)
2181	IAAL, I Am A Lawyer
2182	IAB, International Association for Biologicals
2183	IACREOT, International Association of Clerks, Recorders, Election Officials, and Treasurers
2184	IAD, Ion Assisted Deposition
2185	IADS, Integrated Air Defence System
2186	IAEA, International Atomic Energy Agency
2187	IAF,{i} Industrial Areas Foundation
2188	IAFG, Information Assurance Focus Group
2189	IAI, International African Institute,Israel Aircraft Industries
2190	IANA, Internet Assigned Numbers Authority
2191	IANAL, I Am Not A Lawyer
2192	IAQ, Indoor air quality,Infrequently Asked Questions
2193	IAS, Image Assessment System
2194	IASIP, It's Always Sunny in Philadelphia
2195	IATA,(a/i) International Air Transport Association
2196	IATF,International Automotive Task Force
2197	IATSE,International Alliance of Theatrical Stage Employees
2198	IAU, International Association of Universities,International Astronomical Union
2199	IAUC, International Astronomical Union Circular
2200	IAW, In Accordance With
2201	IB, International Baccalaureate
2202	IBA, Important Bird Area
2203	IBD, Inflammatory Bowel Disease
2204	IBDM, Information Based Decision Making
2205	IBDS, Integrated Biological Detection System,International Business Development Specialist
2206	IBM, International Business Machines
2207	ibo, Igbo language (ISO 639-2 code)
2208	IBRD, International Bank for Reconstruction and Development (part of the World Bank)
2209	IBS, Irritable Bowel Syndrome
2210	IC, Ice Crystals (METAR Code),Iceland (FIPS 10-4 country code), Integrated Circuit,[inner circle]
2211	ICANN, Internet Corporation for Assigned Names and Numbers
2212	ICAO, International Civil Aviation Organization
2213	ICBM, Intercontinental Ballistic Missile
2214	ICBN, International Code of Botanical Nomenclature
2215	ICC, Integrated Command and Control,International Criminal Court,International Cricket Council,Interstate Commerce Commission,International Chamber of Commerce
2216	ICD, Implantable Cardioverter-Defibrillator,Initial Capabilities Document,International Classification of Diseases
2217	ICE,(i/a) In case of emergency
2218	ICES,(a/i) International Council for the Exploration of the Sea
2219	ICF, Intelligent Community Forum
2220	ICM, Improved Conventional Munition,Integrated Collection Management,International Congress of Mathematicians,Iraq Campaign Medal
2221	ICMP, Internet Control Message Protocol
2222	ICNAF, International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
2223	ICNI, Integrated Communication, Navigation, and Identification
2224	ICO, Intermediate Circular Orbit
2225	ICP, Inductively coupled plasma,Insane Clown Posse
2226	ICPE,(a/i) International Conference on Pharmacoepidemiology, the annual conference of the International Society for Pharmacoepidemiology
2227	ICRAF, International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
2228	ICRISAT,(i/a) International Crops Research Institute for the Semi-Arid Tropics
2229	ICRL, Individual Component Repair List
2230	ICRS, International Celestial Reference System
2231	ICS, In-Country Support,Intelligence and Communications Systems,Interim Contractor Support
2232	ICSI, Intracytoplasmic Sperm Injection
2233	ICT, Information and communication technologies
2234	ICTH, Island Closest to Heaven/Hell Final Fantasy VIII
2235	ICV, Infantry Carrier Vehicle
2236	ICW, In Co-ordination With,Indonesia Corruption Watch,Infectious and Chemotherapeutic Waste,Insulating Concrete Wall,Integral Crystalline Waterproofing, Interactive Courseware
2237	ICYMI, In Case You Missed It
2238	ICZN, International Code of Zoological Nomenclature,International Commission on Zoological Nomenclature
2239	id, Indonesian language (ISO 639-1 code)
2240	ID- Idaho (postal symbol), Identity, Indonesia (FIPS 10-4 country code; ISO 3166 digram), Infantry Division,Intelligent Design,ID10T Error, Idiot User Error (IT help desk inside joke)
2241	IDA- U.S. Institute for Defense Analyses,International Development Association (part of the World Bank
2242	IDC, International Data Corporation
2243	IDDI, I don't do initialisms (see irony)
2244	IDE- Integrated Development Environment,Integrated Drive Electronics
2245	IDeA, Improvement and Development Agency, the former name of Local Government Improvement and Development in the United Kingdom
2246	IDEA- Individuals with Disabilities Education Act (U.S.),International Data Encryption Algorithm,International Design Excellence Awards
2247	IDF- Israel Defense Forces,Intel Development Forum,International Dairy Federation
2248	IDGAF, I don't give a fuck
2249	IDK, I don't know
2250	IDKIBTI,I don't know, I'm black, that's it
2251	IDL, Interface Definition Language
2252	IDN, Indonesia (ISO 3166 trigram)
2253	ido, Ido language (ISO 639-2 code)
2254	IDR, Indonesian rupiah (ISO 4217 currency code)
2255	ie, Interlingue language (ISO 639-1 code)
2256	IE, Indo-European languages,Internet Explorer, Ireland (ISO 3166 digram),Iced Earth
2257	IEA, International Energy Agency
2258	IEC, International Electrotechnical Commission
2259	IED, Improvised Explosive Device
2260	IELTS, International English Language Testing System
2261	IER, Information Exchange Requirement
2262	IET, Institution of Engineering and Technology
2263	IET,(ii) Initial Entry Training
2264	IETF, Internet Engineering Task Force
2265	IEW, Intelligence and Electronic Warfare
2266	IFAB, International Football Association Board
2267	IFAH, International Federation for Animal Health
2268	IFAP, International Federation of Agricultural Producers
2269	IFC, International Finance Corporation (part of the World Bank), Independent Film Channel
2270	IFF, Identification, Friend or Foe,Individually Fresh Frozen,International Flavors and Fragrances
2271	IFFN, Identification, Friend, Foe, or Neutral
2272	IFO, Identified Flying Object (see also UFO)
2273	IFOR, UN Implementation Force, Institute for Operations Research,International Fellowship of Reconciliation
2274	IFOV, Instantaneous Field of View
2275	IFPI, International Federation of Phonographic Industries
2276	IFR, Instrument Flight Rules
2277	IFRB, International Frequency Registration Board
2278	IFV, Infantry Fighting Vehicle
2279	ig, Igbo language (ISO 639-1 code)
2280	IG, Inspector General
2281	IGNOU, Indira Gandhi National Open University
2282	IGS, International Ground Station
2283	IGY, Israeli Gay Youth,International Geophysical Year
2284	IHH, Idiopathic Hypogonadotropic Hypogonadism
2285	IHO,(i/a) International Hydrographic Organization
2286	IHR, Institute for Historical Review
2287	IHSI,Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
2288	ii, Sichuan Yi language (ISO 639-1 code)
2289	II, Two (in Roman numerals)
2290	IICA, Inter-American Institute for Cooperation on Agriculture
2291	IIE, Innovative Interstellar Explorer
2292	iii, Sichuan Yi language (ISO 639-2 code)
2293	III, Three (in Roman numerals)
2294	IIRC, If I Recall/Remember Correctly
2295	IISS, International Institute for Strategic Studies
2296	IIT, Illinois Institute of Technology,Indian Institutes of Technology,Indiana Institute of Technology
2297	IJN, Imperial Japanese Navy (World War II)
2298	IJWP, Interim Joint Warfare Publication
2299	ik, Inupiaq language (ISO 639-1 code)
2300	IKEA, Ingvar Kamprad (the company's founder), Elmtaryd (the farm where he was born and raised), Agunnaryd (a village and parish near the farm)
2301	iku, Inuktitut language (ISO 639-2 code)
2302	IL, Illinois (postal symbol),Israel (ISO 3166 digram)
2303	ILC, International Law Commission,International Linear Collider
2304	ILDS, Improved Landmine Detection System
2305	ile, Interlingue language (ISO 639-2 code)
2306	ILO, International Labour Organization
2307	ILRI, International Livestock Research Institute
2308	ILS, Israeli shekel (ISO 4217 currency code)
2309	ILY, IATA code for Islay Airport (Scotland), I Love You [pronounced ILL-LEE]
2310	IM- Isle of Man (FIPS 10-4 territory code), Instant Message (internet speech)
2311	IMA- Intermediate Maintenance Activity,Institute of Mathematics and Applications
2312	IMBD, International Migratory Bird Day
2313	IMDb,Internet Movie Database
2314	IME, In My Experience
2315	IMF- id music file/id's music format (audio file format),Impossible Missions Force, the protagonist organization in the Mission: Impossible media franchise,International Monetary Fund (the most common use for the initialism)
2316	IMHO, In My Humble/Honest Opinion, cf. IMO
2317	IML, International Mister Leather
2318	IMLAST, International Movement for Leisure Activities in Science and Technology,see MILSET
2319	IMNM,,Immune-mediated necrotizing myopathy a rare, but serious ADR of statins [1]
2320	IMNSHO, In My Not So Humble Opinion
2321	IMPAC, International Merchant Purchase Authorization Card
2322	IMPACT, International Medical Products Anti-Counterfeiting Taskforce
2323	IMPATT, IMPact Avalanche Transit Time diode
2324	IMPT, Institute of Maxillofacial Prosthetists and Technologists
2325	IMRO-Internal Macedonian Revolutionary Organization,Irish Music Rights Organisation
2326	IMRL, Individual Material iness List
2327	IMS- Information Management System,International Meat Secretariat,Ion Mobility Spectrometer
2328	IMSA- Illinois Mathematics and Science Academy,International Mind Sports Association,International Motor Sports Association
2329	IMsL, International Ms. Leather
2330	IMT, Integrated Management Tool
2331	IMU, International Mathematical Union
2332	In, Indium
2333	IN, India (FIPS 10-4 country code; ISO 3166 digram),Indiana (postal symbol),Infantry
2334	ina, Interlingua language (ISO 639-2 code)
2335	INA, Immigration and Nationality Act
2336	INAS, International Near-Earth Asteroid Survey
2337	INCITS, InterNational Committee for Information Technology Standards
2338	ind, Indonesian language (ISO 639-2 code)
2339	IND, India (ISO 3166 trigram)
2340	inet, the Internet
2341	INDIGO, (U.S.) INtelligence DIvision Gaming Operation
2342	INFORMS, (U.S.) Institute for Operations Research and the Management Sciences
2343	INFOSEC, Information Security
2344	INLA, Irish National Liberation Army
2345	INMARSAT, International Maritime Satellite organization
2346	INR, Indian rupee (ISO 4217 currency code)
2347	INRIA, Institut national de recherche en informatique et en automatique
2348	INS, Immigration and Naturalization Service
2349	InSAR, Interferometric synthetic aperture radar
2350	INST, Information Standards and Technology
2351	INTSUM, Intelligence Summary
2352	INTERFET, International Force for East Timor
2353	io, Ido language (ISO 639-1 code)
2354	IO, British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
2355	IOC- Initial Operational Capability,Intergovernmental Oceanic Commission,International Olympic Committee,International Ornithological Congress
2356	IOLTA, Interest on Lawyer Trust Accounts (charitable funding mechanism, especially for legal aid)
2357	IOM- Iowa, Ohio, Michigan (soybean origin),Institute of Medicine,International Organisation for Migration,Isle of Man
2358	IONA, Islands of the North Atlantic (alternate name for Great Britain, Ireland, the Isle of Man, and related islands)
2359	IOT, British Indian Ocean Territory (ISO 3166 trigram)
2360	IP, Clipperton Island (FIPS 10-4 territory code), Initial Point,Intellectual Property,Internet Protocol
2361	IPA, India Pale Ale,International Phonetic Alphabet,Isopropyl alcohol
2362	IPB, Intelligence Preparation of the Battlefield
2363	IPCC, Intergovernmental Panel on Climate Change,Independent Police Complaints Commission
2364	ipk, Inupiaq language (ISO 639-2 code)
2365	IPL, Inferior Parietal Lobule
2366	IPO, Initial Public Offering
2367	IPR, In Progress Review,Intellectual Property Rights,Intelligence Production Requirement
2368	IPT, Integrated Product/Project Team
2369	IPTS, Institute for Prospective Technological Studies
2370	IPTV, Internet Protocol TeleVision
2371	IPW, Interrogation of Prisoners of War
2372	IQ, Intelligence Quotient, Iraq (ISO 3166 digram)
2373	IQD, Iraqi dinar (ISO 4217 currency code)
2374	Ir, Iridium
2375	IR, Infrared,Intelligence requirement (military), Iran (FIPS 10-4 country code; ISO 3166 digram),Iran Air (IATA alpha code) see entry for more
2376	IRA, Individual Retirement Account,Irish Republican Army (see also List of organisations known as the Irish Republican Army for groups claiming descent from this organisation)
2377	IRAD, Internal Research and Development
2378	IRAN,(I) Inspect and Repair As Necessary
2379	IRAS, Infrared Astronomical Satellite
2380	IRB, International Rugby Board
2381	IRBM, Intermediate Range Ballistic Missile
2382	IRC, International Red Cross,International Reply Coupon,Internet Relay Chat
2383	IREA, Intermountain Rural Electric Association
2384	IRL, Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
2385	IRN, Iran (ISO 3166 trigram)
2386	IRINN,Islamic Republic of Iran News Network
2387	IRO, International Refugee Organisation
2388	IRQ, Iraq (ISO 3166 trigram)
2389	IRR, Iranian rial (ISO 4217 currency code)
2390	IRS, U.S. Internal Revenue Service
2391	IRST, Infra-red Search and Track
2392	is, Icelandic language (ISO 639-1 code)
2393	IS- Iceland (ISO 3166 digram),Israel (FIPS 10-4 country code)
2394	ISA- Individual Savings Account,Industry Standard Architecture,Instruction Set Architecture,International Seabed Authority
2395	ISAAA, International Service for the Acquisition of Agri-biotech Applications
2396	ISAF- International Sailing Federation,International Security Assistance Force
2397	ISAR, Inverse SAR (Synthetic Aperture Radar)
2398	ISB, Intermediate Staging Base
2399	ISBN, International Standard Book Number (ISO 2108)
2400	ISCCP, International Satellite Cloud Climatology Project
2401	ISCII, Indian Standard Code for Information Interchange
2402	ISDN,Integrated Services Digital Network
2403	ISEF, Intel International Science and Engineering Fair
2404	ISEN, Internet Search Environment Number
2405	ISF, Internal Security Force
2406	ISI-Indian Standards Institute, former name of the Bureau of Indian Standards,Inter-Services Intelligence (Pakistan),Islamic State of Iraq, an umbrella organization for several Iraqi insurgent groups
2407	ISIL,(i/a) Islamic State of Iraq and the Levant
2408	ISIS-(i/a) Institute for Science and International Security,Islamic State of Iraq and Syria
2409	ISK, Icelandic krona (ISO 4217 currency code)
2410	isl, Icelandic language (ISO 639-2 code)
2411	ISL, Iceland (ISO 3166 trigram)
2412	ISLN, International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
2413	ISM- Industrial, scientific or medical, Interstellar medium
2414	ISMB, International Society of Matrix Biologists
2415	ISMC, Intelligent Sounding Meaningless Conversation
2416	ISOGP, Indian Society of Orthodontics for General Practitioners [2]
2417	ISP- International Standardized Profile,Internet Service Provider,Information Systems Professional
2418	ISPE,(a/i) International Society for Pharmacoepidemiology
2419	ISR- Intelligence, Surveillance and Reconnaissance, Israel (ISO 3166 trigram)
2420	ISRO, Indian Space Research Organisation
2421	ISS- International Shorebird Survey (North America),International Space Station
2422	ISSCR, International Society for Stem Cell Research
2423	ISSN, International standard serial number (ISO 3297)
2424	IST- Information System Technology,UCF Institute for Simulation and Training
2425	ISTAR, Intelligence, Surveillance, Target Acquisition, and Reconnaissance
2426	ISTC, Institute of Scientific and Technical Communications (UK)
2427	ISTS, Intel Science Talent Search
2428	ISU- Integrated Sight Unit,International Skating Union,IT[edit]
2429	it, Italian language (ISO 639-1 code)
2430	IT- InferoTemporal (neurophysiology),Information Technology, Italy (FIPS 10-4 country code; ISO 3166 digram)
2431	ita, Italian language (ISO 639-2 code)
2432	ITA, Italy (ISO 3166 trigram)
2433	ITAG, Inertial Terrain-Aided Guidance
2434	ITALY, I'll Truly Always Love You
2435	ITAS, Improved Target Acquisition Sight
2436	ITC, InferoTemporal Cortex (neurophysiology)
2437	ITCZ,(i/p) Intertropical Convergence Zone
2438	ITEC, Information Technology Exposition & Conference
2439	ITEMS, Interactive Tactical Environment Management System
2440	ITER, International Thermonuclear Experimental Reactor
2441	ITF, International Tennis Federation
2442	ITK, In The Know
2443	ITN, Independent Television News (British)
2444	ITS- Incompatible Time-sharing System,Individual Training Standards
2445	ITT, International Telephone and Telegraph (U.S.)
2446	ITTO, International Tropical Timber Organization
2447	ITU- Intent-to-Use,International Telecommunication Union (International Telegraph Union 1865-1932),IU[edit]
2448	iu, Inuktitut language (ISO 639-1 code)
2449	IUCN, International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
2450	IUSS, Integrated Undersea Surveillance System,Integrated Unit Simulation System,International Union of Soil Sciences
2451	IV, Côte d'Ivoire (FIPS 10-4 country code; from Ivory Coast),Four (in Roman numerals), IntraVenous (as in intravenous drip or intravenous therapy)
2452	IVD, Internet Video Device, intra vas device
2453	Iveco, Industrial Vehicles Corporation
2454	IVF, In Vitro Fertilisation
2455	IVI, Interchangeable Virtual Instrument
2456	IVIS,(i/a) Inter-Vehicle Information System
2457	IVL, Inter-Visibility Line
2458	IVM, In Vitro [Oocyte] Maturation
2459	IVO, In Vicinity Of
2460	IW, Information Warfare
2461	IWARS, Infantry Warrior Simulation
2462	IWC, International Whaling Commission
2463	IWW, Industrial Workers of the World
2464	IX, Nine (in Roman numerals)
2465	IXT, IntraText digital library; IntraText lexical hypertext
2466	IY, Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
2467	IZ, Iraq (FIPS 10-4 country code)
2468	J, Joule
2469	J1, Joint [Manpower &] Personnel Directorate
2470	J2, Joint Intelligence Directorate
2471	J2EE, Java 2 Platform, Enterprise ion
2472	J2ME, Java 2 Platform, Micro ion
2473	J2SE, Java 2 Platform, Standard ion
2474	J3, Joint Operations Directorate
2475	J4, Joint Logistics Directorate
2476	J5, Joint Strategic Plans & Policy Directorate
2477	J6, Joint Information Technology Directorate (Command, Control, Communications & Computer Systems)
2478	J7, Joint Operational Plans & Interoperability Directorate
2479	J8, Joint Force Structure, Resources, & Assessment Directorate
2480	J9, Joint Public Affairs Directorate (Civilian-Military Cooperation)
2481	ja, Japanese language (ISO 639-1 code)
2482	JA, Japan (FIPS 10-4 country code)
2483	JAFT, Just A Field Test
2484	JAG, Judge Advocate General Corps (military law)
2485	JAL, Japan Airlines
2486	JALLC, Joint Analysis and Lessons Learned Centre (NATO)
2487	JAM, Jamaica (ISO 3166 trigram)
2488	JAMA, Journal of the American Medical Association
2489	JANET, Joint Academic Network
2490	JANUS, Joint Academic Network Using Satellites (UK),Joint Army Navy Uniform Simulation, Joint Army-Navy Staff,Just ANother Useless Simulation (Note: The U.S. Army Janus simulation is not an acronym)
2491	JATO, Jet-Assisted Take-Off
2492	jav, Javanese language (ISO 639-2 code)
2493	JB, Junior Branch
2494	JB, Jail Bait
2495	JBFSA, Joint Blue Force Situational Awareness
2496	JCDB, Joint Common Data Base
2497	JCDS, Joint Chiefs of the Defence Staff
2498	JCIDS, Joint Capabilities Integration and Development System
2499	JCIET, Joint Combat Identification Evaluation Team
2500	JCL, Job Control Language

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