PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
2	e.g.	'exempli gratia' in Latin, meaning: 'for example'
3	0D	obvious deed
4	1AM	Air Mechanic 1st Class
5	1D	One-Dimensional
6	2AM	Air Mechanic 2nd Class
7	2D	Two-dimensional
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	4G	Fourth-generation mobile telephone system
16	4WD	Four-wheel drive
17	5D	Five-Dimensional
18	6D	Six-Dimensional
19	7D	Seven-Dimensional
20	8D	Eight-Dimensional
21	9D	Nine-Dimensional
22	A	Ampere
23	A/C	Air Conditioned/Conditioning
24	A10	Atlantic 10 Conference
25	A1C	Airman First Class
26	A4	European standard office paper size
27	aA	Attoampere
28	AAA	administration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
29	AAAS	American Association for the Advancement of Science
30	AAAV	Advanced Amphibious Assault Vehicle
31	AADAC	Alberta Alcohol and Drug Abuse Commission
32	AADD	Adult attention deficit disorder
33	AADT	annual average daily traffic
34	AAFES	Army and Air Force Exchange Service
35	AAIS	advanced airborne interceptor simulator
36	AAM	air-to-air missile
37	AAMOF	as a matter of fact
38	AAN	American Academy of Nursing
39	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
40	AAODL	Atmospheric Aerosols and Optics Data Library
41	AAPC	Accounting and Auditing Policy Committee
42	AARP	American Association of Retired Persons (now officially known only by the initials)
43	AASPEM	advanced air-to-air system performance evaluation model
44	AAT	Australian Antarctic Territory
45	AAV	Amphibious Assault Vehicle
46	AAWC	anti-air warfare commander
47	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
48	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
49	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
50	ABC	the first three letters of the Latin script known as the alphabet
51	ABC	abstinence, be faithful, condoms
52	ABC	Active Body Control
53	ABC	airway, breathing, circulation
54	ABC	Alcoholic Beverage Commission
55	ABC	alien big cat
56	ABC	always be careful
57	ABC	American-born Chinese
58	ABC	anti-lock brake controller
59	ABC	atomic, biological, chemical
60	ABCS	(U.S.) Army Battle Command System
61	ABET	Accreditation Board for Engineering and Technology
62	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
63	ABGI	Addington-Barker Group International
64	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
65	ABL	American Basketball League
66	ABLE	AirBorne Law Enforcement (police air support unit)
67	ABMC	American Battle Monuments Commission
68	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
69	ABPI	Association of the British Pharmaceutical Industry
70	ABRSM	Associated Board of the Royal Schools of Music
71	ABS	anti-lock braking system
72	ABSA	Amalgamated Banks of South Africa
73	ABSTRIPS	abstraction-based STRIPS
74	ABV	Alcohol by volume
75	ABW	Aruba (ISO 3166 trigram)
76	Ac	Actinium
77	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Associazione Calcio (Italian,'football (soccer) club')
78	aC	Attocoulomb
79	AC1	Aircraftman 1st Class
80	AC2	Aircraftman 2nd Class
81	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
82	ACARS	Aircraft Communications Addressing and Reporting System
83	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
84	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
85	ACCD	American Coalition of Citizens with Disabilities
86	ACCS	Air Communications and Control Squadron
87	ACDA	Arms Control & Disarmament Agency
88	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
89	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
90	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
91	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
92	ACHT	Average Call Hold Time
93	ACINT	Acoustic Intelligence
94	ACK	Acknowledge (telecommunications; cf. NAK)
95	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
96	ACLJ	American Center for Law and Justice
97	ACLOS	Automatic CLOS (missile control system)
98	ACLS	American Council of Learned Societies
99	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
100	ACM	many,including Association for Computing Machinery; see entry
101	ACMC	(U.S.) Assistant Commandant of the Marine Corps
102	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
103	ACNA	Anglican Church in North America
104	ACO	Airspace Control Order
105	ACOBA	Advisory Committee on Business Appointments
106	ACOG	American College of Obstetricians and Gynecologists
107	ACOM	(U.S.) Atlantic Command
108	ACORN	Association of Community Organizations for Reform Now
109	ACP	African,Caribbean and Pacific Group of States,Air Control Point
110	ACR	Advanced Concepts and Requirements
111	ACRI	African Crisis Initiative
112	ACRT	Advanced Concepts Research Tool simulator
113	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
114	ACSC	Army Command and Staff College (various nations)
115	ACST	American Cooperative School of Tunis
116	ACST	Australian Central Standard Time
117	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
118	ACTD	Advanced Concept Technology Demonstration
119	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)
120	ACTU	Australian Council of Trade Unions
121	ACU	American Conservative Union
122	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
123	AD	Anno Domini (Latin for 'In the year of our Lord')
124	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
125	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
126	ADAGE	Air Defense Air to Ground Engagement (simulation)
127	ADAP	AIDS Drug Assistance Program
128	ADAS	Asiago-DLR Asteroid Survey
129	ADAT	Alesis Digital Audio Tape (recording format)
130	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
131	ADB	Asian Development Bank
132	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
133	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
134	ADDIE	Analyze Design Develop Implement and Evaluate
135	ADDNS	Advanced Deployable Day/Night Simulation
136	ADGB	Air Defence of Great Britain
137	ADHD	Attention-Deficit Hyperactivity Disorder
138	ADHS	Attention-Deficit Hyperactivity Syndrome
139	ADI	Acceptable/Allowable Daily Intake
140	ADL	Anti-Defamation League
141	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
142	ADOA	Air Defence Operations Area
143	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
144	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
145	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
146	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
147	ADT	Atlantic Daylight Time (UTC−3 hours)
148	ADTB	Army Doctrine and Training Bulletin
149	ADW	Air Defence Warning
150	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
151	AEDT	Australian Eastern Daylight Time
152	AEF	American Expeditionary Force
153	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
154	AESR	Aeronautical Equipment Service Record
155	AEST	Australian Eastern Standard Time
156	aet	After extra time (Football)
157	AEW	Airborne Early Warning,Airborne Electronic Warfare
158	AF	Afghanistan (ISO 3166 digram),Air Force,As f*ck
159	aF	Attofarad
160	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
161	AFAIC	As Far As I'm Concerned
162	AFAICT	As Far As I Can Tell
163	AFAIK	As Far As I Know
164	AFAIR	As Far As I Remember/Recall
165	AFAM	Associazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
166	AFATDS	Advanced Field Artillery Tactical Data System
167	AFCEA	Armed Forces Communications and Electronics Association
168	AFDB	African Development Bank
169	AFES	Automatic Fire Extinguishing System
170	AFG	Afghanistan (ISO 3166 trigram)
171	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
172	AFIST	Abrams Full Crew Interactive Skills Trainer
173	AFJ	April Fool's Joke
174	AFK	Away From Keyboard (Internet chat abbreviation)
175	AFLAC	American Family Life Assurance Company of Columbus
176	AFO	Association of Field Ornithologists
177	AFOSR	U.S. Air Force Office of Scientific Research
178	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
179	AFQT	Armed Forces Qualification Test
180	AFRC	Air Force Reserve Command
181	AFRL	Air Force Research Laboratory
182	AFROTC	Air Force Reserve Officer Training Corps
183	AFRRI	(U.S.) Armed Forces Radiobiology Research Institute
184	AFRTS	Armed Forces Radio and Television Service
185	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
186	AFSCN	U.S. Air Force Satellite Control Network
187	AFSPC	Air Force Space Command
188	AFT	American Farmland Trust
189	AFV	armoured fighting vehicle
190	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
191	ag	Attogram
192	Ag	Silver (Latin for 'argentum')
193	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
194	AGARD	Advisory Group for Aerospace Research and Development
195	AGARDograph	Advanced Guidance for Alliance Research and Development publication
196	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
197	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
198	AGC	Adjutant General's Corps (British Army)
199	AGDC	Australian Game Developers' Conference
200	AGI	Auxiliary Group Intelligence
201	AGM	Annual General Meeting
202	AGN	Active Galactic Nucleus
203	AGO	Angola (ISO 3166 trigram)
204	AGP	Accelerated Graphics Port
205	AGRICOLA	Agriculture Online Access
206	AGS	Alaska Ground Station (LandSat)
207	AGTS	Advanced Gunnery Training System
208	AGU	American Geophysical Union
209	AGW	Autonomous Guided Weapon
210	Ah	Ampere-hour
211	AH	Attack Helicopter
212	aH	Attohenry
213	AHA	American Heart Association
214	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
215	AHEC	Australian Health Ethics Committee
216	AHPCRC	Army High Performance Computing Research Center
217	AHQ	Air Headquarters
218	AHRQ	Agency for Healthcare Research and Quality
219	AHS	American Housing Survey
220	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
221	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
222	AIAA	American Institute of Aeronautics and Astronautics
223	AIC	African Independent Church,Animal Identification Coordinator
224	AICD	Australian Institute of Company Directors
225	AICMFP	And I Claim My Five Pounds
226	AID	U.S. Agency for International Development
227	AIDS	Acquired Immune Deficiency Syndrome
228	AIM	Australian Institute of Management
229	AIMP	Aurora Incremental Modernization Project
230	AIPAC	American Israel Public Affairs Committee
231	AIR	Aircraft Inventory Record
232	AIRFA	American Indian Religious Freedom Act
233	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
234	AIS	Australian Institute of Sport,Automatic Identification System
235	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
236	aJ	Attojoule
237	Ajax	Asynchronous JavaScript And XML
238	AJD	Astronomical Julian day
239	AJP	Allied Joint Publication
240	AJPW	All Japan Pro Wrestling
241	AK	Alaska (postal symbol)
242	aK	Attokelvin
243	AKA	Above knee amputation (orthopaedic usage)
244	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
245	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
246	AKST	Alaska Standard Time (UTC−9 hours)
247	AL	Alabama (postal symbol),Albania (ISO 3166 digram),Anno Lucis (Latin,'Year of Light',in Masonic tradition,most often seen on plaques bearing the founding dates of buildings,in years AD and years AL)
248	Al	Aluminium
249	aL	Attolitre
250	ALA	Åland Islands (ISO 3166 trigram)
251	ALAP	As Long/Late As Possible
252	ALARM	Air-Launched Anti-Radar Missile
253	ALB	Albania (ISO 3166 trigram)
254	ALD	Accounting Line Designator (nuclear weapon targeting)
255	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
256	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
257	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
258	ALGOL	ALGOrithmic Language
259	ALPA	Air Line Pilots Association
260	ALS	Amyotrophic Lateral Sclerosis
261	ALSHS	Abraham Low Self-Help Systems
262	ALSP	Aggregate Level Simulation Protocol
263	ALTE	Association of Language Testers in Europe
264	Am	Americium
265	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (ISO 3166 digram)
266	AM1	Airman 1st class
267	AMCB	U.S. Army/Marine Corps Board
268	AMFOM	Advanced Missile Fly Out Model
269	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
270	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
271	AML	Acute Myeloid Leukaemia
272	AMLCD	Active Matrix Liquid Crystal Display
273	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
274	AMO	Atlantic Multidecadal Oscillation
275	AMOLED	Active-matrix organic light-emitting diode
276	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
277	AMP	Adenosine MonoPhosphate,Automated Mission Planner
278	AMRAAM	Advanced Medium-Range Air-to-Air Missile
279	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
280	AMS	Agriculture Marketing Service,American Mathematical Society
281	AMSAA	U.S. Army Materiel Systems Analysis Activity
282	AMSO	U.S. Army Model and Simulation Office
283	AMSU	Advanced Microwave Sounding Unit
284	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
285	AN	Netherlands Antilles (ISO 3166 digram)
286	aN	Attonewton
287	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
288	ANC	African National Congress
289	AND	Andorra (ISO 3166 trigram)
290	ANFO	Ammonium nitrate/fuel oil (explosive)
291	ANGLiCo	Air/Naval Gunfire Liaison Company
292	ANL	Argonne National Laboratory
293	ANM	Acoustic Noise Monitor
294	ANOVA	ANalysis Of VAriance
295	ANS	Applied and Natural Sciences
296	ANSI	American National Standards Institute
297	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
298	ANTM	America's Next Top Model
299	ANTY	Acronyms,No Thank You
300	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
301	ANZ	Australia and New Zealand Banking Group
302	ANZAC	Australian and New Zealand Army Corps
303	AO	Angola (ISO 3166 digram),Approach Officer (submarine),Area of Operations
304	AOC	Air Operations Centre,Air Officer Commanding
305	AOD	Adrenalin O.D. (punk rock band)
306	AOI	Angle Of Incidence (Arab Organization for Industrialization)
307	AOL	America OnLine
308	AOR	Area of Responsibility
309	AOSTH	Adventures of Sonic the Hedgehog
310	AOTS	Attack of the Show!
311	AOU	American Ornithologists' Union
312	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
313	APB	All Points Bulletin (police jargon)
314	APEC	Asia Pacific Economic Cooperation
315	APEDS	AMSAA Performance Estimates Data System
316	APEX	Applied Physics Express
317	APHA	American Public Health Association
318	APHIS	Animal and Plant Health Inspection Service
319	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
320	APOD	Aerial Port (Airport) Of Debarkation
321	APOE	Aerial Port (Airport) Of Embarkation
322	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
323	APP	Allied Procedural Publication
324	APR	Annual Percentage Rate
325	AQIM	Al-Qaeda in the Islamic Maghreb
326	AR	Argentina (ISO 3166 digram),Arkansas (postal symbol),Armour,Arunachal Pradesh (Indian state code)
327	Ar	Argon
328	ARAG	Advanced Research and Assessment Group
329	ARB	Administrative Review Board
330	ARBA	Army Review Boards Agency
331	ARCA	Automobile Racing Club of America
332	ARCENT	United States Army Central Command
333	ARDA	Advanced Research and Development Activity (became DTO 2006)
334	ARF	ASEAN Regional Forum
335	ARG	Argentina (ISO 3166 trigram)
336	ARH	Armed Reconnaissance Helicopter
337	ARNet	Acquisition Reform Network
338	ARP	Applied Research Programme
339	ARPA	Advanced Research Projects Agency
340	ARRC	ACE Rapid Reaction Corps
341	ARRF	Allied Rapid Reaction Force
342	ARRL	American Radio Relay League
343	ARSC	Arctic Region Supercomputing Center
344	ARSPACE	U.S. Army Space Command
345	ARTCC	Air Route Traffic Control Center
346	ARWG	Army Research Working Group
347	AS	ActionScript
348	AS	American Samoa (postal symbol; ISO 3166 digram),Assam / Asom (Indian state code)
349	As	Arsenic
350	aS	Attosiemens
351	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
352	ASAP	As Soon As Possible
353	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
354	asbl	association sans but lucratif (French 'Non-profit organisation')
355	ASBO	Anti-Social Behaviour Order
356	ASCAP	American Society of Composers,Authors,and Publishers
357	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
358	ASCII	American Standard Code for Information Interchange
359	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
360	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
361	ASEAN	Association of Southeast Asian Nations
362	ASFAR	Americans for a Society Free of Age Restrictions
363	ASG	Area Support Group
364	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
365	ASICS	Anima sana in corpore sano (Latin for 'A sound mind in a sound body') (athletic shoe manufacturer)
366	ASIO	Australian Security Intelligence Organisation,Audio stream input output
367	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
368	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
369	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
370	ASMB	American Society for Matrix Biology,Adult Swim Message Board
371	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
372	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
373	ASN	Associate of Science in Nursing
374	ASOC	Air Sovereignty Operations Centre,Air Support Operations Centre,Airport Security and Operations Centre,Antarctic and Southern Ocean Coalition,Atlanta Symphony Orchestra Chorus,Australian Standard Offence Classification
375	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
376	ASPI	Australian Strategic Policy Institute
377	ASR	Alkali-silica reaction,Anti Slip Regulation
378	ASRAAM	Advanced Short-Range Air-to-Air Missile
379	ASSC	Association for the Scientific Study of Consciousness
380	AST	Atlantic Standard Time (UTC−4 hours)
381	ASTIA	Armed Services Technical Information Agency
382	ASTM	American Society for Testing and Materials
383	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
384	ASUW	AntiSUrface Warfare
385	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
386	ASVEL	Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for 'Sporting Association'; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
387	ASW	AntiSubmarine Warfare
388	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
389	ASX	Advanced Stream Redirector,Australian Securities Exchange
390	AT	Anti-Tank,Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
391	At	Astatine
392	aT	Attotesla
393	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
394	ATAC	Air Transportable Acoustic Communications
395	ATAPI	Advanced Technology Attachment Packet Interface
396	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
397	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
398	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
399	ATESS	Aerospace and Telecommunications Engineering Support Squadron
400	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
401	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
402	ATGM	Anti-Tank Guided Missile
403	ATGW	Anti-Tank Guided Weapon
404	ATK	Attack
405	ATL	Atlanta,Georgia,the largest city and capital of Georgia
406	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
407	ATM	At The Moment
408	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
409	ATO	Air Tasking Order,Australian Taxation Office
410	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
411	ATSD	(U.S.) Assistant Secretary of Defense
412	ATSDR	Agency for Toxic Substances and Disease Registry
413	ATV	All-Terrain Vehicle
414	ATWA	Air,Trees,Water,Animals
415	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram)
416	Au	Gold (Latin 'Aurum')
417	AUC	Ab Urbe Condita / Anno Urbis Conditae (Latin for 'from the founding of the city' / 'in the year since the founding of the city') (of Rome),Area Under the Curve (concentration time curve; medicine)
418	AUS	Australia (ISO 3166 trigram)
419	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
420	Auslan	Australian Sign Language
421	AUT	Austria (ISO 3166 trigram)
422	AUTL	Army Universal Task List
423	AV	Audio-Visual,Aviation
424	Av	Aperture value (photographic mode)
425	aV	Attovolt
426	AVA	American Viticultural Area
427	AVB	Audio Video Bridging
428	AVDLR	Aviation Depot Level Repair
429	AVGP	Armoured Vehicle, General Purpose
430	AVIM	Aviation Intermediate Maintenance
431	AVLB	Armoured Vehicle Launched Body
432	AVM	Air Vice-Marshal, Arteriovenous malformation
433	AVO	Apprehended Violence Order
434	AVP	Arubaanse Volkspartij
435	AVP	Association of Volleyball Professionals
436	AVRE	Armoured Vehicle Royal Engineers
437	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
438	AVUM	Aviation Unit Maintenance
439	AVVO	Acute Vaginal Venereal Outbreak
440	AW	Aruba (ISO 3166 digram)
441	aW	Attowatt
442	AWA	American Wrestling Association
443	AWC	Air Warfare Centre
444	AWD	All Wheel Drive
445	AWE	Advanced Warfighting Experiment
446	AWP	Awaiting Parts (SM&R code)
447	AWSIM	Air Warfare SIMulation
448	AWST	Australian Western Standard Time
449	AWW	Above Water Warfare
450	AX	Åland Islands (ISO 3166 digram)
451	AXP	Ambulance eXchange Point
452	AYBABTU	All Your Base Are Belong To Us
453	AYU	As Yet Unknown
454	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
455	AZE	Azerbaijan (ISO 3166 trigram)
456	AZUR	Actions en zone urbaine (French for: Urban Operations)
457	BAR	Barbados (IOC trigram,but not FIFA or ISO 3166),British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD , Binational Agricultural Research and Development fund (between the US and Israel),BARDA , Biomedical Advanced Research and Development Agency,BART , Bay Area Rapid Transit,BAS , Battalion Aid Station,BASE , Building,Antenna,Span,Earth (parachute from),BASF , Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory,a German chemicals company),BASIC , Beginner's All-purpose Symbolic Instruction Code (acronym was added later,originally it was simply Basic),BAT , Basic Aid Training,BATF , U.S. Bureau of Alcohol,Tobacco,and Firearms,BATS , Behavior Analysis Training System ,Bradley Advanced Training System,BATTeRS , Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit]
458	BB	Barbados (ISO 3166 digram),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
459	BBB	Better Business Bureau,Blood-brain barrier
460	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
461	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
462	BBN	Bolt,Beranek and Newman
463	BBQ	Barbecue
464	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)
465	BBYO	B'nai B'rith Youth Organization
466	BC	Before Christ,Blind Copy (in emailers),Boston College,British Columbia (postal symbol)
467	BCA	Bachelor of Computer Application,Black Coaches & Administrators
468	BCC	Blind Carbon Copy
469	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
470	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
471	BEL	Belgium (ISO 3166 trigram)
472	BEN	Benin (ISO 3166 trigram)
473	BEO	Banquet Event Order
474	BERC	Business Environmental Resource Center
475	BER	Bit Error Rate
476	BH	Bahrain (ISO 3166 digram)
477	BHR	Bahrain (ISO 3166 trigram)
478	BNF	Backus-Naur Form (computing), British National Formulary
479	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
480	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
481	BNS	Bank of Nova Scotia
482	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
483	BO	Back Orifice,Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
484	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
485	BoAML	Bank of America Merrill Lynch
486	BOC	British Orthodontic Society, British Oxygen Company
487	BÖC	Blue Öyster Cult
488	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
489	BOFH	Bastard Operator From Hell
490	BOGA	Bend Over and Grab Ankles
491	BOGOF	Buy One,Get One Free
492	BOGs	Bunch of Guys
493	BOI	Balance Of Investment,Basis Of Issue
494	BOL	Bolivia (ISO 3166 trigram)
495	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
496	BOPD	Barrel of Oil Per Day
497	BOS	Battlefield Operating System
498	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
499	BP	Battle Position,British Petroleum (today,BP does not officially stand for anything),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
500	BPV	Battlefield Planning Visualization,Bovine papillomavirus
501	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)
502	BR	Brazil (ISO 3166 digram) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
503	BRA	Brazil (ISO 3166 trigram)
504	BRAG	Bicycle Ride Across Georgia
505	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
506	BRIC	Brazil, Russia, India, and China
507	BRICS	Brazil, Russia, India, China, and South Africa
508	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
509	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
510	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
511	BSN	Baloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
512	BSNL	Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
513	BSoD	Blue Screen of Death (distinct from BSD)
514	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
515	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
516	BSW	British Standard Whitworth (screw thread)
517	BSX	Bendigo Stock Exchange
518	BT	Baal teshuva (Hebrew,'master of repentance') ,used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph,Bhutan (ISO 3166 digram),BitTorrent,British Telecom,the former name of the company now known as BT Group,BTDT , Been There,Done That,Bti , Bacillus thuringiensis israelensis,BTID , Battlefield Target Identification Device,BTIS , Battlefield Target Identification System
519	Bt	Baronet,Bacillus thuringiensis
520	BTO	Built To Order
521	BTP	British Transport Police
522	BTR	Bronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
523	BTU	British Thermal Unit
524	BTW	By The Way
525	BU	Burma (ISO 3166 digram; obsolete since 1989)
526	BUAV	British Union for the Abolition of Vivisection
527	BUG-E	Battlefield Universal Gateway Equipment ('buggy')
528	BUNO	Bureau Number (aircraft serial number)
529	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
530	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram)
531	BVD	Bradley,Voorhees & Day (underwear manufacturer)
532	BVR	Beyond Visual Range
533	BVT	Bouvet Island (ISO 3166 trigram)
534	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
535	BW	Bring Wedges (ISO digram)
536	BW	Botswana (ISO 3166 digram)
537	BWA	Botswana (ISO 3166 trigram)
538	BWARS	Bees,Wasps & Ants Recording Society
539	BWC	Biological and Toxin Weapons Convention
540	BWR	Boiling-Water Reactor
541	BX	Base eXchange
542	BY	Belarus (ISO 3166 digram), Bavaria
543	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
544	BYOC	Bring Your Own Computer (play on BYOB)
545	BYOF	Bring Your Own Flask
546	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
547	BYU	Brigham Young University
548	BZ	Belize (ISO 3166 digram)
549	BZP	Benzylpiperazine
550	C	Carbon, Coulomb, One Hundred (in Roman numerals)
551	c	Centi
552	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
553	c2c	the British rail company formerly known as LTS Rail
554	Ca	Calcium
555	CA	California (postal symbol),Canada (ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
556	CAA	Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association
557	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
558	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
559	CACM	Central American Common Market
560	CACM	Communications of the ACM
561	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
562	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
563	CADPAT	CAnadian Disruptive PATtern
564	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
565	CAEn	Close Action Engagement (constructive simulation)
566	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
567	CAFAD	Combined Arms For Air Defence
568	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
569	CAFE	Corporate Average Fuel Economy standard
570	CAI	Computer Assisted Instruction
571	CAIR	Council on American-Islamic Relations
572	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
573	CALL	Center for Army Lessons Learned
574	CALM	Communications,Air-interface,Long and Medium range
575	CalPERS	California Public Employees' Retirement System
576	Caltrans	California Department of Transpotation
577	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
578	CAMRA	CAMpaign for Real Ale
579	CAN	Canada (ISO 3166 trigram)
580	CANDU	CANada Deuterium Uranium (nuclear reactor design)
581	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
582	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
583	CARE	Citizens Association for Racial Equality (former New Zealand organisation),Community database on Accidents on the Roads in Europe,Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe)
584	CARMONETTE	Computerized Monte Carlo Simulation
585	CARP	Computed Air Release Point
586	CART	Championship Auto Racing Teams (now defunct)
587	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
588	CASA	Civil Aviation Safety Authority
589	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
590	CASS	Command Activated Sonobuoy System
591	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
592	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
593	CAT	Community Acceptance Testing
594	CATK	Counterattack
595	CATS	Computer Active Technology Suspension
596	CATT	Combined Arms Tactical Trainer
597	CAV	Cavalry
598	CAVOK	Ceiling And Visibility OK ('Kav-okay')
599	CAW	Canadian Auto Workers (trade union)
600	CB	Citizens' Band radio
601	CBASSE	Commission on Behavioral And Social Sciences and Education ('sea bass')
602	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
603	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
604	CBF	Confederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
605	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
606	CBLA	Comparative bullet lead analysis
607	CBM	Canadian Baptist Ministries
608	CBM	Commodore Business Machines
609	CBML	Coalition Battle Management Language
610	CBN	CardsApp Brand Number
611	CBOL	Consortium for the Barcode of Life
612	CBOT	Chicago Board of Trade
613	CBP	Customs and Border Protection
614	CBR	Case-Based Reasoning
615	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
616	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
617	CBS	Columbia Broadcasting System,Corps Battle Simulation
618	CBUS	Columbus,Ohio
619	CC	carbon copy
620	CCA	Counter Command Activity
621	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
622	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
623	CCD	Confraternity of Christian Doctrine (Catechism)
624	CCF	Cartoon Cartoon Fridays
625	CCG	Canadian Coast Guard,Collectible Card Game
626	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
627	CCGH	Canadian Coast Guard Hovercraft
628	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
629	CCH	Computer-Controlled Hostile
630	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)
631	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
632	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
633	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
634	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)
635	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
636	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
637	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
638	CCOP	Coalition Common Operating/Operational Picture
639	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
640	CCPA	Consumer Credit Protection Act
641	CCR	Creedence Clearwater Revival
642	CCRAp	Canadian Conservative Reform Alliance party
643	CCRP	Command and Control Research Program
644	CCRTS	Command and Control Research and Technology Symposium
645	CCSCS	Consultative Committee for Space Data Systems
646	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
647	CCSIL	Command and Control Simulation Interface Language ('cecil')
648	CCSK	Cyclic Code Shift Keying
649	CCT	Current Commitments Team
650	Cd	Cadmium
651	cd	Candela
652	CD	Compact Disc
653	CD1	Cluster of Differentiation 1 (a small gene family)
654	CDA	UK Centre for Defence Analysis
655	CDD	Capabilities Development Document
656	CDE	Chemical Defence Equipment
657	CDIAC	Carbon Dioxide Information Analysis Center ('see-dee-ack')
658	CDipAF	Certified Diploma in Accounting and Finance
659	CDL	Commercial driver's license
660	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
661	CDMA	Code Division Multiple Access
662	CDMSII	Cryogenic Dark Matter Search II
663	Cdr	Commander
664	CDT	Central Daylight Time (UTC−5 hours)
665	Cdt	Commandant
666	Ce	Cerium
667	CE	Christian/Common Era
668	CEA	Campaign Effectiveness Analysis
669	CECOM	U.S. Army Communications and Electronics Command
670	CEDEX	Courrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
671	CEGEP	Collège d'enseignement général et professionnel (French,'College of General and Vocational Education')
672	CEI	Competitive Enterprise Institute
673	CENTCOM	United States Central Command
674	CENTO	Central Treaty Organization (Baghdad Pact)
675	CENZUB	Centre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
676	CEO	Chief Executive Officer
677	CEP	Circular Error Probable
678	CEPT	Conférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
679	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
680	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
681	CERGA	Centre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
682	CERN	Centre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
683	CERT	Computer Emergency Response Team
684	CESS	Centre for Earth Science Studies (India)
685	CEST	Central European Summer Time
686	CET	Central European Time
687	CEWC	Council for Education in World Citizenship
688	Cf	Californium
689	CF	Canadian Forces,Central African Republic (ISO 3166 digram)
690	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
691	CFAR	Christine's,Federal Acquisition Regulation
692	CFC	ChloroFluoroCarbon,Canadian Fish Company
693	CFES	Continuous Flow Electrophoresis System
694	CFFZ	Call For Fire Zone
695	CFG	Context-free grammar,Control flow graph
696	CFHT	Canada-France-Hawaii Telescope
697	CFI	Center for Inquiry (CSICOP)
698	CFL	Canadian Football League,Co-ordinated Fire Line
699	CFLCC	Coalition Forces Land Component Command
700	CFM	Certified Facilities Manager
701	CFO	Chief Financial Officer
702	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
703	CFR	Code of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
704	CFRP	Carbon fibre reinforced plastic
705	CFS	Chronic Fatigue Syndrome
706	CFSP	Common Foreign and Security Policy
707	CFU	Colony Forming Unit in Microbiology
708	CFV	Cavalry Fighting Vehicle
709	CFZ	Critical Friendly Zone
710	CG	Client Group,Computer Graphics,Controls Group,Republic of the Congo (ISO 3166 digram)
711	CGH	Comparative Genomic Hybridisation
712	CGIG	Cross-Government Implementation Group
713	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
714	CGS	Chief of the General Staff
715	CGT	Capital Gains Tax
716	ch	ch(L) is used to denote the Chern character of a line bundle
717	CH	Chieftain tank,Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
718	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
719	CHAOS	Cambridge Heart Anti-Oxidant Study
720	CHAPS	Clearing House Automated Payment System
721	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
722	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
723	CHI	Columbia Helicopters,Inc
724	CHiP	California Highway Patrol
725	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
726	CHL	Chile (ISO 3166 trigram)
727	CHLA	Core Historical Literature of Agriculture
728	CHN	China (ISO 3166 trigram)
729	CHOGM	Commonwealth Heads of Government Meeting
730	CHPSO	California Hospital Patient Safety Organization
731	CHRS	Canadian Heart Rhythm Society
732	CHT	Certified Hand Therapist
733	CI	Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
734	Ci	Curie
735	CIA	U.S. Central Intelligence Agency, Cairo International Airport, Culinary Institute of America
736	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
737	CIB	Complete In Box (Internet auction/trading listings)
738	CIBC	Canadian Imperial Bank of Commerce
739	CICS	Customer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
740	CID	Certified Interior Designer
741	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
742	CIF	Cost,Insurance,and Freight (Paid) (shipping)
743	CIMMYT	Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
744	CINC	Commander in Chief
745	CINEOS	Campo Imperatore Near-Earth Object Survey
746	CIO	Chief information officer,Congress of Industrial Organizations
747	CIPE	(European) Centre for International Political Economy
748	CIR	(Commander's) Critical Information Requirements
749	CIR	Corotating Interaction Region
750	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
751	CISA	(U.S.) C4I Integration Support Activity
752	CISB	Complete In Sealed Box (Internet auction/trading listings)
753	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
754	CISSP	Certified Information Systems Security Professional
755	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
756	CIV	Côte d'Ivoire (ISO 3166 trigram)
757	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
758	CIVPOP	Civilian Population
759	CIWS	Close-In Weapon System
760	CJ	Criminal Justice
761	CJC	Canadian Jewish Congress,Cold Junction Compensation
762	CJCS	Chairman of the Joint Chiefs of Staff
763	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
764	CJO	Chief of Joint Operations
765	CJTF	Combined Joint Task Force
766	CK	Cook Islands (ISO 3166 digram)
767	CKA	commonly known as, Canada Kicks Ass
768	CKND	Codename: Kids Next Door
769	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
770	Cl	Chlorine
771	CLA	Clutterers Anonymous
772	CLEC	Competitive Local Exchange Carrier
773	CLEMARS	California Law Enforcement Mutual Aid Radio System
774	CLIC	Compact LInear Collider
775	CLO	Cornell Lab of Ornithology
776	CLOS	Command to Line-Of-Sight (missile control system)
777	CLPFC	CentroLateral PreFrontal Cortex
778	CLRP	College Loan Repayment Program
779	CM	Cameroon (ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
780	Cm	Curium
781	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
782	CMHC	Canada Mortgage and Housing Corporation
783	CMIIAW	Correct me if I am wrong
784	CMIS	Common management information service
785	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
786	CMLL	Consejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
787	CMMC	Corps Materiel Management Centre
788	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
789	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
790	CMP	Common [Operating/Operational] Maritime Picture
791	CMPD	Charlotte Mecklenburg Police Department
792	CMPD	Chronic Myeloproliferative Disease
793	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
794	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
795	CMT	Country Music Television
796	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
797	CMW	Marconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales,Australia),Chicago,Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit)
798	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
799	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram)
800	CNA	Center for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company),National (Fire Insurance Company),and American (Casualty Company),the three companies that merged to form what is now known as CNA Financial
801	CNBC	Consumer News and Business Channel
802	CND	Campaign for Nuclear Disarmament,Computer Network Defence
803	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
804	CNF	Cost and Freight
805	CNI	Clinical Nursing Intern
806	CNI	Communications,Navigation and Identification
807	CNN	Cable News Network,Cellular Nonlinear Network
808	CNV	Copy-Number Variable (genetics)
809	Co	Cobalt
810	COB	Close Of Business [day]
811	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
812	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
813	CoDA	Co-Dependents Anonymous
814	COGENT	Cognitive Objects within a Graphical EnviroNmenT
815	COIL	Chemical Oxygen Iodine Laser
816	COK	Cook Islands (ISO 3166 trigram)
817	COL	Colombia (ISO 3166 trigram)
818	COLA	Cost Of Living Adjustment
819	CONAD	U.S. Continental Air Defense Command
820	CONMEBOL	Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
821	CONUS	Continental United States
822	COO	Chief Operating Officer
823	COPE	U.K. Committee On Publication Ethics
824	COPUS	U.K. Committee on the Public Understanding of Science
825	CORD	Common Operational Requirements Document
826	CORE	Consortium for Oceanographic Research and Education
827	COS	Cooper Ornithological Society
828	COSER	COoperative SERvice
829	CoT	Car of Tomorrow (former NASCAR race car design)
830	COTS	Commercial Off The Shelf
831	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
832	CPA	Certified Public Accountant
833	CPAC	Conservative Political Action Conference,Cable Public Affairs Channel ('see-pack')
834	CPCU	Certified Property Casualty Underwriter
835	CPD	Capabilities Production Document
836	CPE	Certificate of Proficiency in English
837	CPE	Certified Professional Ergonomist
838	CPF	Calibration Parameter File,Canadian Patrol Frigate
839	CPG	Clinical Practice Guideline
840	CPIM	Certification on Production and Inventory Management
841	CPIR	Computationally-Private Information Retrieval
842	CPON	Certified Pediatric Oncology Nurse
843	CPPCC	Chinese People's Political Consultative Conference
844	CPR	Canadian Pacific Railway
845	CPR	Cardiopulmonary resuscitation
846	CPSM	Continuous Phase Shift Modulation
847	CPSU	Communist Party of the Soviet Union
848	CPT	Contingency Planning Team
849	CPU	Contract Postal Unit
850	CPV	Cape Verde (ISO 3166 trigram)
851	CPX	Command Post eXercise
852	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator)
853	CQD	Close Quarters Drill (Morse distress code preceding SOS: CQ 'calling all stations',D 'Distress'; often incorrectly interpreted as 'Come Quick,Distress')
854	Cr	Chromium
855	CR	Costa Rica (ISO 3166 digram)
856	CRAM	Combined Radiometric Correction Model
857	CRD	Capstone Requirements Document
858	CREB	Cyclic AMP-response Element Binding (protein)
859	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
860	CREN	Christian Real Estate Network Real Estate Association
861	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
862	CRIPL	Consolidated Remain-In-Place List
863	CRM	Cardiac Rhythm Management,Customer Relationship Management
864	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
865	CRP	Committee for the Re-Election of the President,Control and Reporting Post
866	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
867	CRTC	Canadian Radio-television and Telecommunications Commission
868	Cs	Caesium
869	CSA	Canadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area,Czech Airlines,C/S/A,CINC,Service,and Agency
870	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
871	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
872	CSG	Corps Support Group
873	CSI	see entry
874	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
875	CSIP	Commercial Stable Image Platform (AMD)
876	CSIS	Canadian Security Intelligence Service ('seessiss'),(U.S.) Center for Strategic & International Studies
877	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
878	CSL	U.K. Central Science Laboratory
879	CSPI	Center for Science in the Public Interest
880	CSR	Control Supply Rate
881	CSR	Corporate Social Responsibility
882	CSRC	Conflict Studies Research Centre
883	CSRF	Cross-Site Request Forgery
884	CST	Central Standard Time (UTC−6 hours)
885	CT	Computed tomography (medical scan also known as a CAT scan),Central Time zone,Chrono Trigger (Computer/Video games),Connecticut (postal symbol),Canterbury (postal symbol),Chhattisgarh (Indian state code)
886	CTA	Central African Republic (FIFA trigram,but not ISO 3166 or IOC),Chicago Transit Authority,Comando-Geral de Tecnologia Aerospacial (Portuguese,[Brazilian] 'General Command for Aerospace Technology')
887	CTBT	Comprehensive [Nuclear] Test Ban Treaty
888	CTDB	Compact Terrain Data Base (file format)
889	CTE	Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984),Chronic traumatic encephalopathy
890	CTGF	connective tissue growth factor
891	CTI	Co-operative Target Identification
892	CTIL	Critical Tracked Items List
893	CTIS	Central Tire Inflation System
894	CTMS	Clinical Trial Management System
895	CTO	Chief Technical Officer,Chief Technology Officer
896	CTS	Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
897	CTSS	Compatible Time-Sharing System
898	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
899	CTVT	Canine Transmissible Venereal Tumour
900	CU	Carrie Underwood, Cuba (ISO 3166 digram)
901	Cu	Copper (Latin 'Cuprum')
902	CUB	Cuba (ISO 3166 trigram)
903	CUCV	Commercial Utility Cargo Vehicle
904	CUNY	City University of New York ('CUE-knee')
905	CUPE	Canadian Union of Public Employees ('CUE-pee')
906	CUPS	Common Unix Printing System
907	CUPW	Canadian Union of Postal Workers
908	CUREA	Consortium for Undergraduate Research and Education in Astronomy
909	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
910	CUW	Curaçao (ISO 3166 trigram)
911	CV	curriculum vitae (résumé)
912	CVLL	Crypto Variable Logic Label
913	CVSD	Continuous Variable Slope Delta (modulation)
914	CVT	Continuously Variable Transmission
915	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer
916	CWA	Communications Workers of America
917	CWC	Chemical Weapons Convention
918	CWRU	Case Western Reserve University
919	CWS	Canadian Wildlife Service
920	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
921	CXR	Christmas Island (ISO 3166 trigram)
922	CY	Calendar year, or: Cyprus (ISO 3166 country code digram)
923	CYM	Cayman Islands (ISO 3166 trigram)
924	CZE	Czech Republic (ISO 3166 trigram)
925	CZF	(Christian Zombie Fan)
926	CZMA	(US) Coastal Zone Management Act
927	d	Deci
928	D	Deuterium
929	DA	Debtors Anonymous,U.S. Department of the Army,District Attorney
930	DADVSI	Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French,'Law on copyrights and related rights in the information society')
931	DAES	Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis,Experimentation and Simulation
932	DAF	Dissolved Air Flotation,a technique used in water treatment
933	DAFIF	Digital Aeronautical Flight Information File
934	DAK	Disney's Animal Kingdom
935	DAO	Division Ammunition Officer
936	DAQ	Data acquisition,Delivered Audio Quality
937	DARE	Drug Abuse Resistance Education
938	DARO	(U.S.) Defense Airborne Reconnaissance Office
939	DARPA	U.S. Defense Advanced Research Projects Agency
940	DART	Disaster Assistance Response Team,Dublin Area Rapid Transit
941	DAS	Defensive Aids Suite
942	DASD	(U.S.) Deputy Assistant Secretary of Defense
943	DASL	Datapoint's Advanced Systems Language
944	DAU	(U.S.) Defense Acquisition University
945	DAWN	(U.S.) Drug Abuse Warning Network
946	dB	Decibel
947	DB	Deutsche Bahn
948	Db	Dubnium
949	DBA	De Bellis Antiquitatis (miniature wargaming rules)
950	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
951	DBDO	Desert BDO
952	DBE	Dame Commander of the Order of the British Empire
953	DBF	Detection By Fire (weapon launch signature)
954	DBR	De Bellis Renationis (miniature wargaming rules)
955	DBRA	Davis-Bacon Related Acts
956	DBS	Direct Broadcast Services (television)
957	DC	da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current,District of Columbia (postal symbol),Douglas Aircraft Company,Dublin Core,Duty Cycle
958	DCA	Defensive Counter Air,Drum Corps Associates,DiChloroAcetate
959	DCAA	(U.S.) Defense Contract Audit Agency
960	DCAS	Devon and Cornwall Archery Society
961	DCC	Dallas Christian College
962	DCD	[Organ] Donation after Cardiac Death
963	DCE	Data Communication Equipment
964	DCFC	Death Cab for Cutie
965	DCI	Detection,Classification and Identification,Drum Corps International,Duellists' Convocation International,now known simply by the initials
966	DCL	Disney Cruise Line
967	DCN	Deacon
968	DCOM	Disney Channel Original Movie
969	DCSOPS	Deputy Chief of Staff for Operations and plans
970	DCW	Digital Chart of the World
971	DCYSC	Discovery Channel Young Scientist Challenge
972	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
973	DDA	Deputy District Attorney
974	DDN	U.S. Defense Data Network
975	DDS	Doctor of Dental Surgery
976	DDT	Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
977	DE	Delaware (postal symbol),Germany (ISO 3166 digram)
978	DEA	Drug Enforcement Administration
979	DEA	Drug Enforcement Agency
980	DEC	Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
981	DeCA	(U.S.) Defense Commissary Agency
982	DEFCON	Defence readiness condition
983	DEFRA	(UK) Department for Environment,Food and Rural Affairs
984	DELT	Dual Ended Line Test (ing)
985	DEM	Data Exchange Mechanism,Digital Elevation Model
986	DEN	Denmark (IOC and FIFA trigram,but not ISO 3166)
987	DEPSECDEF	(U.S.) Deputy Secretary of Defense
988	DERA	British Defence Evaluation and Research Agency (1995-2001)
989	DES	Deep Ecliptic Survey
990	DEU	Germany (ISO 3166 trigram)
991	DF	Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for 'federal district')
992	DFAS	(U.S.) Defense Finance and Accounting Service
993	DFB	Deutscher Fußball-Bund (German for 'German Football Association')
994	DFCB	Data Format Control Book
995	DfID	UK Department for International Development
996	DFM	Discrete Field Model see Superluminal motion
997	DFM	Dynamic Flowgraph Methodology
998	DFSP	Dermatofibrosarcoma protuberans
999	DfT	UK Department for Transport
1000	DFTBA	Don't Forget To Be Awesome,a term commonly used by the Vlogbrothers
1001	DG	Dei gratia (Latin,'by the grace of God'),Director-General,Data General
1002	DGA	Direction générale des armées (French 'Armed Forces General Directorate')
1003	DGPS	Differential GPS
1004	DGZ	Desired Ground Zero
1005	DHA	DocosaHexaenoic Acid
1006	DHHS	(U.S.) Department of Health and Human Services
1007	DHRA	(U.S.) DoD Human Resources Activity
1008	DHS	U.S. Department of Homeland Security
1009	DHSS	UK Department of Health and Social Security
1010	DHTFYSS	U.S. Don't Have Time For You Silly S****
1011	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
1012	DIA	U.S. Defense Intelligence Agency
1013	DIAC	Department of Immigration and Citizenship (Australia) [1]
1014	DiC	Design Island Centre (computing usually used in a teaching situation)
1015	DICASS	DIrectional Command Activated Sonobuoy System
1016	DIFAR	DIrectional Frequency Analysis and Recording
1017	DIME	Dense Inert Metal Explosive
1018	DIP	Dual In-line Package (electronics)
1019	DIPS	Defense independent pitching statistics
1020	DIR	Defence Industrial Research
1021	DISCOM	Division Support Command
1022	DISE	Deployable Intelligence Support Element
1023	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
1024	DITY	Do-It-Yourself
1025	DIVAD	Division Air Defence
1026	DIY	Do It Yourself
1027	DJI	Djibouti (ISO 3166 trigram)
1028	DK	Denmark (ISO 3166 digram)
1029	DL	Dexter's Laboratory
1030	DLIC	Detachment Left-In-Contact
1031	DLIR	Depot-Level Inspection and Repair
1032	DLPMC	DorsoLateral PreMotor Cortex
1033	DLRP	Data Link Reference Point
1034	DLS	Deep Lens Survey
1035	DLSA	(U.S.) Defense Legal Services Agency
1036	DLSc	Diploma in Library Science
1037	DLTBGYD	Don't let the bastards grind you down
1038	DMC	(U.S.) Defense Management Council
1039	DMCA	Digital Millennium Copyright Act
1040	DMM	Digital Multimeter
1041	DMOC	Distributed Mission Operations Centre
1042	DMPA	(U.S.) Defense Medical Programs Activity
1043	DMPFC	DorsoMedial PreFrontal Cortex
1044	DMPK	Drug Metabolism and Pharmacokinetics
1045	DMRB	Design Manual for Roads and Bridges
1046	DMS	U.S. Defense Message System
1047	DMSP	U.S. Defense Meteorological Satellite Program
1048	DMT	Dimethyltryptamine
1049	DMV	Department of Motor Vehicles
1050	DMZ	DeMilitarized Zone
1051	DN	Deacon
1052	DNAW	Day Night All Weather
1053	DNDi	Drugs for Neglected Diseases initiative
1054	DNDO	U.S. Domestic Nuclear Detection Office
1055	DNK	Denmark (ISO 3166 trigram)
1056	DNM	Defence Nuclear Material
1057	DNR	Do Not Resuscitate
1058	DNS	Domain Name System
1059	DO	Dominican Republic (ISO 3166 digram),Doctor of Osteopathic Medicine
1060	DOA	Dead On Arrival,Dead or Alive
1061	DOB	Date Of Birth
1062	DOD	U.S. Department of Defense
1063	DODAF	U.S. Department of Defense Architectural Framework
1064	DoDD	U.S. Department of Defense Directive
1065	DoDEA	(U.S.) Department of Defense Education Activity
1066	DOE	U.S. Department of Energy
1067	DOHC	Dual-OverHead-Cam engine
1068	DOI	U.S. Department of the Interior
1069	DORA	Defence of the Realm Act
1070	DOS	Density of State
1071	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1072	DotD	Deal of the Day (marketing gimmick)
1073	DOW	Died of Wounds
1074	DP	Division de production (Algerian petroleum company)
1075	DPA	UK Defence Procurement Agency
1076	DPCO	Double-Pole Change Over
1077	DPDT	Double-Pole Double-Throw
1078	DPI	Dots Per Inch
1079	DPICM	Dual-Purpose Improved Conventional Munition
1080	DPKO	UN Department for Peacekeeping Operations
1081	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1082	DPPDB	Digital Point Positioning Database
1083	DPRK	Democratic People's Republic of Korea
1084	DPST	Double-Pole Single-Throw
1085	DQ	Dairy Queen
1086	DR	Dead Reckoning,Danmarks Radio (Danish Broadcasting Corporation)
1087	DRC	Democratic Republic of the Congo
1088	DRDC	Defence Research & Development Canada
1089	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1090	DRES	Defence Research Establishment Suffield (obsolete 2002)
1091	DRET	Defence Research Establishment Toronto (obsolete 2002)
1092	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1093	DRIC	(U.S.) Defense Research Information Center
1094	DRMS	(U.S.) Defense Revitalization and Marketing Service
1095	DRPR	Drawing Practices
1096	DRT	Document Related Technologies
1097	Ds	Darmstadtium
1098	DSAS	Disney Sing Along Songs
1099	DSB	(U.S.) Defense Science Board
1100	DSCS	U.S. Defense Satellite Communications System
1101	DSCSOC	DSCS Operations Center
1102	DSE	Dry Sheep Equivalent
1103	DSG	Direct-Shift Gearbox
1104	DSID	Dismounted Soldier Identification System
1105	DSL	Digital Subscriber Line
1106	DSLR	Digital single-lens reflex (camera)
1107	DSM	Diagnostic and Statistical Manual of Mental Disorders
1108	DSN	Deep Space Network
1109	DSPL	Design Specialists and Plans Language
1110	DSR	Deformed Special Relativity
1111	DST	Daylight Saving Time
1112	DSTL	British Defence Science and Technology Laboratory
1113	DSWA	(U.S.) Defense Special Weapons Agency
1114	DTA	Dental Technologists Association
1115	DTD	Digital Terrain Data
1116	DTG	Date-Time Group
1117	DTH	Direct To Home (television)
1118	DTI	UK Department of Trade and Industry
1119	DTIC	(U.S.) Defense Technical Information Center
1120	DTL	Diode-Transistor Logic (electronics)
1121	DTMF	Dual-tone multi-frequency signaling
1122	DTO	Disruptive Technology Office (was ARDA)
1123	DTR	Determine The Relationship
1124	DTSA	(U.S.) Defense Technology Security Administration
1125	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1126	DUSD	(U.S.) Deputy Under-Secretary of Defense
1127	DVLC	UK Driver and Vehicle Licencing Centre
1128	DVM	Doctor of Veterinary Medicine
1129	DVO	Direct View Optics
1130	DVOM	Digital Volt-Ohm Meter
1131	DVP	various meanings (disambiguation page)
1132	DW	Drum Workshop
1133	DWIM	Do What I Mean
1134	DWM	Doctor Who Magazine
1135	DWTS	Dancing with the Stars
1136	DWW	Down with Webster
1137	DXA	Dual-energy X-ray Absorptiometry
1138	DXM	DeXtroMethorphan
1139	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1140	Dy	Dysprosium
1141	DZA	Algeria (ISO 3166 trigram)
1142	E	East
1143	EABU	Explain Acronyms Before Use
1144	EAC	Echelons Above Corps
1145	EAPC	Euro-Atlantic Partnership Council
1146	EAST	Experimental Advanced Superconducting Tokamak
1147	EBD	Electronic Brake Distribution
1148	EBE	Extraterrestrial Biological Entity
1149	EBSA	Employee Benefits Security Administration
1150	EBW	Electron Beam Welding
1151	EBW	Exploding BridgeWire
1152	ECASS	European Centre for Analysis in the Social Sciences [1]
1153	ECBR	European Coalition for Biomedical Research
1154	ECCM	Electronic Counter-Counter-Measures
1155	ECFS	Electronic Case Filing System
1156	ECG	Electrocardiogram
1157	ECHR	European Convention on Human Rights
1158	ECJ	European Court of Justice
1159	ECL	Emitter Coupled Logic (electronics)
1160	ECommHR	European Commission on Human Rights
1161	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1162	ECT	ElectroConvulsive Therapy
1163	ECtHR	European Court of Human Rights
1164	EDA	European Defence Agency
1165	EDAC	Error Detection And Correction
1166	EDCS	Environmental Data Coding Specification
1167	EDH	Eastman Dental Hospital
1168	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1169	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1170	EEC	European Economic Community (predecessor of the EU)
1171	EEG	ElectroEncephaloGram
1172	EENT	End Evening Nautical Twilight
1173	EEO	Equal Employment Opportunity
1174	EEOC	(U.S.) Equal Employment Opportunity Commission
1175	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1176	EFF	Electronic Frontier Foundation
1177	EFL	English as a Foreign Language
1178	EFM	Enterprise Feedback Management
1179	EFOA	European Fuel Oxygenates Association
1180	EFSA	European Food Safety Authority
1181	EFT	Electronic Fund Transfer
1182	EFV	Expeditionary Fighting Vehicle
1183	EG	Egypt (ISO 3166 digram)
1184	EGCG	EpiGalloCatechin-3-Gallate
1185	EGIS	Erieye Ground Interface Segment
1186	EGRET	Energetic Gamma-Ray Experiment Telescope
1187	EGY	Egypt (ISO 3166 trigram)
1188	EHF	Extremely High Frequency
1189	EHR	Equipment History Record
1190	Ei	Exbi
1191	EIA	Environmental Impact Assessment
1192	EIAH	Encyclopedia of Iranian Architectural History
1193	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1194	EIC	East India Company
1195	EICS	East India Company's Service
1196	eID	electronic ID
1197	EIRP	Effective Isotropic Radiated Power
1198	EIS	Environmental Impact Statement
1199	EJ	Exajoule
1200	EK	Exakelvin
1201	EKG	Electrocardiogram (from German Elektrokardiogramm)
1202	EKMS	Electronic Key Management System
1203	EL	Exalitre
1204	ELINT	Electronic Intelligence
1205	ELL	English Language Learner
1206	ELM	Edge-Localised Mode (plasma physics)
1207	ELO	Electric Light Orchestra
1208	ELSS	Emergency Life Support Stores
1209	EM	ElectroMagnetism/ElectroMagnetic
1210	Em	Exametre
1211	EMA	European Medicines Agency
1212	EMCON	(Electromagnetic) Emissions Control
1213	EMDG	Euro-Missile Dynamics Group
1214	EMDR	Eye Movement Desensitisation and Reprocessing
1215	EMEA	Europe,Middle East and Africa
1216	EMG	ElectroMyoGraph
1217	EMP	ElectroMagnetic Pulse
1218	EMS	Emergency Medical Services
1219	EMT	Emergency Medical Technician
1220	EN	Corps of Engineers,Exanewton
1221	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1222	ENE	East North-East
1223	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1224	ENTEC	Euro NATO Training Engineer Centre
1225	ENVL	Envelope
1226	ENY	Enemy
1227	EOD	Explosive Ordnance Disposal
1228	EOG	ElectroOculoGraphy
1229	EOM	End of Message
1230	EOSAT	Earth Observation Satellite
1231	EOSDIS	Earth Observation Satellite Data and Information System
1232	EP	European Parliament
1233	EP	Extended play
1234	EPCOT	Experimental Prototype Community Of Tomorrow
1235	EPGS	EOS Polar Ground Sites
1236	EPIRB	Emergency Position Indicating Radio Beacon
1237	EPL	English Premier League
1238	EPOS	Electronic Point Of Sale
1239	EPPA	Employee Polygraph Protection Act
1240	EPR	European Pressurised [Nuclear] Reactor
1241	EQ	Emotional Quotient
1242	Er	Erbium
1243	ERCIM	European Research Consortium for Informatics and Mathematics
1244	ERI	Eritrea (ISO 3166 trigram)
1245	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1246	EROS	Earth Resources Observation System
1247	ERP	Engineer Regulating Point
1248	ERR	Eesti Rahvusringhääling
1249	ERS	Earth Resources Survey
1250	ERTS	Earth Resources Technology Satellite (became Landsat)
1251	ERV	Endogenous RetroVirus
1252	ES	Electronic warfare Support,Exasiemens,Spain (ISO 3166 digram; from the country's native name of España)
1253	ESD	ElectroStatic Discharge
1254	ESDP	European Security and Defence Policy
1255	ESE	East South-East
1256	ESH	Western Sahara (ISO 3166 trigram)
1257	ESL	English as a Second Language
1258	ESM	Electronic warfare Support Measures
1259	ESO	European Southern Observatory
1260	ESOL	English for Speakers of Other Languages
1261	ESPN	Entertainment and Sports Programming Network
1262	ESU	Emergency Services Unit
1263	ESV	Engineer Support Vehicle
1264	ET	Ethiopia (ISO 3166 digram)
1265	ETH	Ethiopia (ISO 3166 trigram)
1266	ETI	Extra-Terrestrial Intelligence
1267	ETLA	Extended TLA
1268	ETT	Embedded Training Team
1269	EU	European Union
1270	Eu	Europium
1271	EUCOM	(U.S.) European Command
1272	EUUSA	European Union and United States of America
1273	EV	Exavolt
1274	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1275	EWTN	Eternal Word Television Network
1276	Exatesla	Extra Terrestrial
1277	EXREP	Expeditious Repair (SM&R code)
1278	EZ	Extraction Zone
1279	f	Femto
1280	fA	Femtoampere
1281	FA	Food Addicts in Recovery Anonymous
1282	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1283	FAAD	Forward Area Air Defence
1284	FAADEZ	Forward Area Air Defence Engagement Zone
1285	FAAFP	Fellow of the American Academy of Family Physicians
1286	FAAN	Fellow of the American Academy of Neurology
1287	FAAN	Fellow of the American Academy of Nursing
1288	FAAQ	Frequently Asked and Anticipated Questions
1289	FAASV	Field Artillery Ammunition Supply Vehicle
1290	FAB	Feline Advisory Bureau (UK feline charity)
1291	FACA	(US) Federal Advisory Committee Act
1292	FACH	Fuerza Aérea de Chile
1293	FACN	Fellow of the American College of Nutrition
1294	FACP	Fellow of the American College of Physicians
1295	FACTS	Flexible Alternating Current Transmission System
1296	FAM	Foreign Affairs Manual
1297	FAO	Food and Agriculture Organization
1298	FAPA	Fellow of the American Psychological Association
1299	FAPHA	Fellow of the American Public Health Association
1300	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1301	FASCAM	Family of Scatterable Mines[1]
1302	FASD	Fetal Alcohol Spectrum Disorder
1303	FASEB	Federation of American Societies for Experimental Biology
1304	FAT	Field Artillery Tractor
1305	FAVS	Future Armoured Vehicle System
1306	FAW	Football Association of Wales
1307	FBCS	Fellow of the British Computer Society
1308	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1309	FBIS	Foreign Broadcast Information Service
1310	FBM	Board foot
1311	fC	Femtocoulomb
1312	FCC	U.S. Federal Communications Commission
1313	FCE	First Certificate in English
1314	FCF	Financial Free Cash Flow
1315	FCLA	Fraud Claims Law Associate
1316	FCO	UK Foreign and Commonwealth Office
1317	FCW	Florida Championship Wrestling
1318	FD	Falun Dafa
1319	FDA	Food and Drug Administration (U.S.)
1320	FDBK	(I) Feedback
1321	Fe	Iron (Latin Ferrum)
1322	FEAST	Forum for European-Australian Science and Technology Cooperation
1323	FEATS	Festival of European Anglophone Theatrical Societies link title
1324	FEBA	Forward Edge of the Battle Area
1325	FED	Field Emission Display
1326	FEDEP	Federation Development Process (Simulation)
1327	FEF	Frontal Eye Field (neurophysiology)
1328	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1329	FENS	Federation of European Neuroscience Societies
1330	FES	Flywheel Energy Storage
1331	FEST	Frankfurt English Speaking Theatre link title
1332	FET	Field-effect transistor
1333	FEZ	Fighter Engagement Zone
1334	fF	Femtofarad
1335	FF	Final Fantasy
1336	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1337	FFC	Free For Chat
1338	FFE	Fukuoka Futures Exchange
1339	FFF	Fédération française de football (French for: French Football Federation)
1340	FFG	Guided Missile Frigate (hull classification symbol)
1341	FFOV	Forward Field Of View
1342	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1343	FFS	For Fuck's Sake
1344	FFT	Final Fantasy Tactics
1345	FG	Falun Gong
1346	fg	Femtogram
1347	FG	Fog (METAR Code)
1348	FGOTUS	First Gentleman of the United States
1349	FGR	Flickr Group Roulette
1350	fH	Femtohenry
1351	FHFIF	Foster's Home for Imaginary Friends
1352	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1353	FI	Finland (ISO 3166 digram)
1354	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1355	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1356	FIBUA	Fighting In Built-Up Areas
1357	FIC	Fellowship for Intentional Community
1358	FID	Foreign Internal Defence
1359	FIE	Fly-In Echelon
1360	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1361	FIFe	Fédération internationale féline (French for: International Feline Federation)
1362	FIFO	First In, First Out
1363	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1364	FIGJAM	Fuck I'm Good, Just Ask Me
1365	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1366	FIN	Finland (ISO 3166 trigram)
1367	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1368	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1369	FIS	Fédération internationale de ski (French for: International Ski Federation)
1370	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1371	FISH	Fluorescence In-Situ Hybridisation
1372	FiST	Fire Support Team
1373	FITS	Flexible Image Transport System
1374	FIU	Florida International University
1375	fJ	Femtojoule
1376	FJ	Fiji (ISO 3166 digram)
1377	FJI	Fiji (ISO 3166 trigram)
1378	FJN	Financial Job Network
1379	FK	Falkland Islands (ISO 3166 digram)
1380	fK	Femtokelvin
1381	FKSM	Fort Knox Supplemental Manual
1382	FKT	Fastest Known Time
1383	fL	Femtolitre
1384	FL	Florida (postal symbol)
1385	fl	floruit (Latin for: living) (genealogy)
1386	FLA	Florida,Front Line Assembly,Future Large Aircraft
1387	FLAB	Four-letter abbreviation
1388	FLAC	Free Legal Advice Centres
1389	FLAC	Free Lossless Audio Codec
1390	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1391	FLB	Forward Logistics Base
1392	FLET	Forward Line of Enemy Troops
1393	FLG	Falun Gong
1394	FLIP	Flight Information Publication
1395	FLIR	Forward Looking InfraRed (sensor)
1396	FLK	Falkland Islands (ISO 3166 trigram)
1397	FLOT	Forward Line of Own Troops
1398	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1399	FLQ	Free Legal Questions
1400	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1401	FLSA	Fair Labor Standards Act
1402	FLTSAT	Fleet Satellite
1403	FLTSATCOM	Fleet Satellite Communication System
1404	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1405	FM	Factory Mutual
1406	FM	Federal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram),Field Manual,Flight Manager,Frequency Modulation (electronics)
1407	fm	Femtometre
1408	Fm	Fermium
1409	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1410	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1411	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1412	FMCG	Fast Moving Consumer Goods
1413	FME	Formal Methods Europe
1414	FMECA	Failure Modes and Effect Criticality Analysis
1415	FMJD	Fédération Mondiale du Jeu de Dames
1416	FMLA	Family Medical Leave Act
1417	FoE	Friends of the Earth
1418	FOGC	Federal Oil and Gas Council
1419	FOH	Front Of House
1420	FOIA	Freedom of Information Act
1421	FOM	Federation Object Model
1422	FONSI	Finding of No Significant Impact
1423	FOO	Forward Observation Officer
1424	FOOP	Friends Of Organ Pipes (Volunteer group)
1425	FoS	Family of Systems
1426	FOSE	Fallout 3 Script Extender
1427	FOSE	Federal Office Systems Expo
1428	FOT	Free on truck
1429	FOTA	Fellow of the Orthodontic Technicians Association
1430	FOTC	Flight of the Conchords
1431	FOUO	For Official Use Only
1432	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1433	FPS	Fire Prevention System
1434	FQ	French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1435	FR	France (ISO 3166 digram)
1436	Fr	Francium
1437	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1438	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1439	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1440	FRICBM	Full Range ICBM
1441	FRO	Faroe Islands (ISO 3166 trigram)
1442	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1443	FRSA	Fellow of the Royal Society of Art
1444	FRY	Federal Republic of Yugoslavia
1445	fs	Femtosecond
1446	fS	Femtosiemens
1447	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1448	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1449	FSCL	Fire Support Co-ordination Line
1450	FSE	Fire Support Element
1451	FSF	Free Software Foundation
1452	FSH	Follicle Stimulating Hormone
1453	FSI	Fuel Stratified Injection
1454	FSS	Fire Support Station
1455	FSSP	Families of Structurally Similar Proteins
1456	FSTC	Foreign Science Technology Center (now NGIC)
1457	fT	Femtotesla
1458	FTC	Federal Trade Commission
1459	FTE	Full Time Equivalent
1460	FTL	Faster Than Light
1461	FTS	Flight Termination System used during some rocket launches
1462	FTS	Fuck That Shit
1463	FU	Smoke (METAR Code)
1464	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1465	fV	Femtovolt
1466	fW	Femtowatt
1467	FW	Forward
1468	FWC	Football World Cup
1469	FWF	Fixed Word Format
1470	FWI	French West Indies
1471	FWIW	For What It's Worth
1472	FWS	U.S. Fish and Wildlife Service
1473	FWT	Fresh Water Tank
1474	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1475	FYA	For Your Agenda
1476	FYDP	Five-Year Defense Plan (U.S.)
1477	FYI	For Your Information
1478	FYROM	Former Yugoslav Republic of Macedonia
1479	FZDZ	Freezing Drizzle (METAR Code)
1480	FZFG	Freezing Fog (METAR Code)
1481	FZRA	Freezing Rain (METAR Code)
1482	g	Gram
1483	G3	Heckler & Koch G3
1484	GAAR	General Anti-Avoidance Rule (tax evasion)
1485	GAB	Gabon (ISO 3166 trigram)
1486	GABA	Gamma-AminoButyric Acid
1487	GAD	Generalized Anxiety Disorder
1488	GAF	Garfield and Friends
1489	GAO	U.S. Government Accountability Office
1490	GAW	Global Atmospheric Watch
1491	GB	United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10]
1492	GBBC	Great (Global) Backyard Bird Count
1493	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1494	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1495	GCA	Graduate in Claims Administration
1496	GCD	see entry
1497	GCF	Greatest Common Factor
1498	GCI	Ground-controlled interception
1499	GCN	Gamma-ray burst Coordination Network
1500	GCS	Global Coordinate System
1501	GCSE	General Certificate of Secondary Education (UK)
1502	Gd	Gadolinium
1503	GD	Grenada (ISO 3166 digram)
1504	GDL	Game Definition Language
1505	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1506	GDR	German Democratic Republic (cf. DDR)
1507	GDW	Game Designers Workshop
1508	Ge	Germanium
1509	GEBCO	General Bathymetric Chart of the Oceans
1510	GEC	Great Engineering Challenge
1511	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1512	GEEP	Geophysical Equipment Exploration Platform
1513	GEN	Full General (four stars) in the U.S. Army
1514	GeV	Gigaelectron-volt
1515	GEV	Ground Effect Vehicle
1516	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1517	GFI	Ground Fault Interruptor (aka GFCI)
1518	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1519	GFN	Global Footprint Network
1520	GGK	Good God Karma
1521	GHA	Ghana (ISO 3166 trigram)
1522	GHB	gamma-Hydroxybutyric acid
1523	Gi	Gibi
1524	GIB	Gibraltar (ISO 3166 trigram)
1525	GIG	Global Information Grid
1526	GINO	Godzilla In Name Only
1527	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1528	GJ	Gigajoule,Gujarat (Indian state code)
1529	GJD	Geocentric Julian Day
1530	GK	Gigakelvin
1531	GLAAD	Gay and Lesbian Alliance Against Defamation
1532	GLAC	General Ledger Accounting Code
1533	GLAST	Gamma-ray Large Area Space Telescope
1534	GLBA	Gramm-Leach-Bliley Act
1535	GLC	Gas-liquid chromatography
1536	GLP	Guadeloupe (ISO 3166 trigram)
1537	GLV	Gained Life Value
1538	Gm	Gigametre
1539	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Guru Meditation (computing)
1540	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
1541	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1542	GMFSC	Ground Mobile Forces Satellite Communications
1543	GMO	Genetically Modified Organism
1544	GMPCS	Global Mobile Personal Communications by Satellite
1545	GNAS	Grand National Archery Society
1546	GNB	Guinea-Bissau (ISO 3166 trigram)
1547	GNP	Gross National Product
1548	GNQ	Equatorial Guinea (ISO 3166 trigram)
1549	GnRH	Gonadotropin-Releasing Hormone
1550	GOA	General of the Army (United States only)
1551	GOAT	Greatest Of All Time
1552	GOC	General Officer Commanding
1553	GOES	Geostationary Operational Environmental Satellite
1554	GOP	Grand Old Party
1555	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1556	GOSC	General Officer Steering Committee
1557	GOSH	Great Ormond Street Hospital
1558	GOSP	Gas/Oil Separation Plant
1559	GOTS	Government off-the-shelf
1560	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1561	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram)
1562	GPA	Grade Point Average
1563	GPC	Global Path Cache
1564	GPIB	General-Purpose Instrumentation/Interface Bus
1565	GPO	General Post Office
1566	GPPC	Genetics and Public Policy Center
1567	GPR	Ground-Penetrating Radar
1568	GPS	General Problem Solver,Global Positioning System
1569	GPT	General Purpose Technology, Get paid to surf (an online business model)
1570	GQ	Equatorial Guinea (ISO 3166 digram),Gentlemen's Quarterly (the original name of the magazine now known simply as GQ),GR[edit]
1571	GR	Greece (ISO 3166 digram),Hail (METAR Code)
1572	GRAIL	Gravity Recovery and Interior Laboratory
1573	GRAS	Generally recognized as safe (FDA list)
1574	GRB	Gamma-Ray Burst
1575	GRC	Greece (ISO 3166 trigram)
1576	GRD	Grenada (ISO 3166 trigram)
1577	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1578	grep	[search] Globally for Regular Expression,Print [lines]
1579	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1580	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1581	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1582	GRL	Greenland (ISO 3166 trigram)
1583	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1584	Gs	Gigasecond
1585	GSA	U.S. General Services Administration
1586	GSD	Graphical Situation Display
1587	GSGB	(God send glamour boy 9-10/10)
1588	GSK	GlaxoSmithKline [good sexual karma]
1589	GSN	Game Show Network
1590	GSO	General Services Officer (U.S. Department of State)
1591	GSOH	Good Sense Of Humour
1592	GSP	Georges St-Pierre (Canadian MMA fighter)
1593	GSR	Gun Shot Residue
1594	GSS	Generic Security Services
1595	GSW	Gunshot wound
1596	GTD	Getting Things Done
1597	GTG	Got To Go (Internet chat)
1598	GTGN	Getty Thesaurus of Geographic Names
1599	GTK	Good To Know (Internet chat)
1600	GTM	Guatemala (ISO 3166 trigram)
1601	GU	Guam (postal symbol; ISO 3166 digram)
1602	GUF	French Guiana (ISO 3166 trigram)
1603	GUILT	Gangliated Utrophin Immuno Latency Toxin
1604	GULCR	Grupo de Usuarios de Linux de Costa Rica
1605	GUT	Grand Unification Theory
1606	GV	Gigavolt
1607	GWARS	Ground Warfare System (simulation)
1608	GWAS	Grand Western Archery Society
1609	GWOT	Global War on Terrorism
1610	GXE	Gene-enivronment interaction
1611	GXM	Matrox Graphics eXpansion Module
1612	GY	Guyana (ISO 3166 digram)
1613	GZ	Ground Zero
1614	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1615	h	Hecto
1616	H	Henry
1617	H1	First half of the year
1618	H2	Second half of the year
1619	HA	High Availability
1620	HAARP	High Frequency Active Auroral Research Program
1621	HAART	Highly Active Anti-Retroviral Therapy
1622	HAI	Human Awareness Institute
1623	HAL	Hardware Abstraction Layer
1624	HALO	High Altitude Low Opening (parachute jump)
1625	HAM	Amateur radio operator
1626	HANS	Head And Neck Support (device used in many race cars)
1627	HARM	High-speed Anti-Radiation Missile
1628	HAW	Heavy Antitank Weapon
1629	HAWK	Homing All the Way Killer (air defence system)
1630	HAZ	Heat-Affected Zone
1631	HAZMAT	Hazardous Materials
1632	HBCD	HexaBromoCycloDodecane
1633	HBO	Home Box Office
1634	HBR	Harvard Business Review
1635	HBT	Heterojunction Bipolar Transistor
1636	HBV	Hepatitis B Virus
1637	HCCI	Homogeneous Charge Compression Ignition
1638	HCF	Highest Common Factor
1639	HCSC	Higher Command and Staff Course
1640	HDL	High-Density Lipoprotein
1641	HDM	Human Decision-Making
1642	HDRA	Henry Doubleday Research Association
1643	He	Helium
1644	HE	High Explosive
1645	HEAT	High Explosive Anti-Tank (ammunition)
1646	HEBA	Hellenic Basketball Clubs Association
1647	HEER	High-Explosive Extended Range (ammunition)
1648	HEIC	Honourable East India Company
1649	HEMP	High-Altitude Electromagnetic Pulse
1650	HEOSS	High Earth Orbit Space Surveillance
1651	HEP	High-Explosive Plastic (ammunition)
1652	HEPA	High-Efficiency Particulate Air (filter)
1653	HESV	Heavy Engineering Support Vehicle
1654	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1655	HEU	Highly Enriched Uranium
1656	Hf	Hafnium
1657	HF	High Frequency
1658	HFE	Human Fertilisation and Embryology (UK Act)
1659	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1660	HFEA	Human Fertilisation and Embryology Authority (UK)
1661	Hg	Mercury (Latin Hydrargyrum)
1662	HGC	UK Human Genetics Commission
1663	HGF	Human Growth Factor
1664	HGTV	Home & Garden Television
1665	HI	Hawaii (postal symbol)
1666	HIH	His (or Her) Imperial Highness
1667	HIM	His (or Her) Imperial Majesty
1668	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1669	HIMEZ	High Altitude Missile Engagement Zone
1670	HIMYM	How I Met Your Mother
1671	HIPAA	U.S. Health Insurance Portability and Accountability Act
1672	Hipparcos	HIgh Precision Parallax COllecting Satellite
1673	Hird	Hurd of interfaces representing depth (cf. HURD)
1674	HiRISE	High Resolution Imaging Science Experiment
1675	HIT	Health Information Technology
1676	HIV	Human Immunodeficiency Virus
1677	HIWT	Hobart Institute of Welding Technology
1678	HJD	Heliocentric Julian Day
1679	HK	Hong Kong (ISO 3166 digram)
1680	HKG	Hong Kong (ISO 3166 trigram)
1681	HKS	HyperKinetic Syndrome
1682	hL	Hectolitre
1683	HL	Holding Line
1684	HLL	High-Level Language
1685	HLN	Headline News
1686	HLOS	High Level Output Specification
1687	HM	Heard Island and McDonald Islands (ISO 3166 digram)
1688	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1689	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1690	HMF	HydroxyMethyl Furfural
1691	HMO	Health maintenance organization
1692	HMP	Her Majesty's Prison
1693	HMRC	Her/His Majesty's Revenue and Customs
1694	HMSO	Her Majesty's Stationery Office
1695	HMV	His Master's Voice
1696	HN	Honduras (ISO 3166 digram)
1697	HND	Honduras (ISO 3166 trigram)
1698	Ho	Holmium
1699	HOLLAND	Hope Our Love Lasts And Never Dies
1700	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1701	HOT	Highly Optimised Tolerance
1702	HOTAS	Hands on throttle-and-stick
1703	HOV	High Occupancy Vehicle
1704	hp	horse power
1705	HPA	UK Health Protection Agency
1706	HPCL	Hindustan Petroleum Corporation Limited
1707	HPLC	High Performance Liquid Chromatography
1708	HPT	High[er] Payoff Target
1709	HPV	Human Papilloma Virus
1710	HQ	HeadQuarters
1711	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1712	HRD	Human Resource Development
1713	HRF	High iness Forces
1714	HRH	His (or Her) Royal Highness
1715	HRM	His (or Her) Royal Majesty
1716	HRM	Human Resource Management
1717	HRT	Hormone Replacement Therapy
1718	Hs	Hassium
1719	HSBC	The Hong Kong and Shanghai Banking Corporation
1720	HSC	Higher School Certificate
1721	HSM	High School Musical
1722	HSMAD	Human Science/Modeling and Analysis Data
1723	HSN	Home Shopping Network
1724	HSPH	Harvard School of Public Health
1725	HSSI	High-Speed Serial Interface
1726	HST	see entry
1727	HTA	HyperText Application
1728	HTFU	Harden The Fuck Up
1729	HTH	Hope That Helps
1730	HTI	Haiti (ISO 3166 trigram)
1731	HTR	Heated Towel Rail
1732	HTS	High-Temperature Superconducting wire
1733	HTTP	HyperText Transfer Protocol
1734	HU	Hungary (ISO 3166 digram)
1735	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1736	HUN	Hungary (ISO 3166 trigram)
1737	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1738	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1739	HVAP	High Velocity Armour Piercing (ammunition)
1740	HVHF	High velocity human factors
1741	HVM	High Velocity Missile
1742	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1743	HWM	Hardware morphing (computer graphics rendering)
1744	HXB	The glycoprotein Tenascian C
1745	HZ	Haze (METAR Code)
1746	Hz	Hertz
1747	IA	Iowa (postal symbol)
1748	IAAL	I Am A Lawyer
1749	IAB	International Association for Biologicals
1750	IAD	Ion Assisted Deposition
1751	IADS	Integrated Air Defence System
1752	IAEA	International Atomic Energy Agency
1753	IAF	{i} Industrial Areas Foundation
1754	IAFG	Information Assurance Focus Group
1755	IANA	Internet Assigned Numbers Authority
1756	IANAL	I Am Not A Lawyer
1757	IAS	Image Assessment System
1758	IASIP	It's Always Sunny in Philadelphia
1759	IATA	International Air Transport Association
1760	IATF	International Automotive Task Force
1761	IATSE	International Alliance of Theatrical Stage Employees
1762	IAUC	International Astronomical Union Circular
1763	IAW	In Accordance With
1764	IB	International Baccalaureate
1765	IBA	Important Bird Area
1766	IBD	Inflammatory Bowel Disease
1767	IBDM	Information Based Decision Making
1768	IBM	International Business Machines
1769	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1770	IBS	Irritable Bowel Syndrome
1771	IC	Ice Crystals (METAR Code),Integrated Circuit,[inner circle]
1772	ICANN	Internet Corporation for Assigned Names and Numbers
1773	ICAO	International Civil Aviation Organization
1774	ICBM	Intercontinental Ballistic Missile
1775	ICBN	International Code of Botanical Nomenclature
1776	ICE	In case of emergency, Immigration and Customs Enforcement
1777	ICES	International Council for the Exploration of the Sea
1778	ICF	Intelligent Community Forum
1779	ICMP	Internet Control Message Protocol
1780	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1781	ICO	Intermediate Circular Orbit
1782	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1783	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1784	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1785	ICRL	Individual Component Repair List
1786	ICRS	International Celestial Reference System
1787	ICSI	Intracytoplasmic Sperm Injection
1788	ICT	Information and communication technologies
1789	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1790	ICV	Infantry Carrier Vehicle
1791	ICYMI	In Case You Missed It
1792	ID	Idaho (postal symbol),Identity,Indonesia (ISO 3166 digram),Infantry Division,Intelligent Design,ID10T Error,Idiot User Error (IT help desk inside joke)
1793	IDC	International Data Corporation
1794	IDDI	I don't do initialisms (see irony)
1795	IDGAF	I don't give a fuck
1796	IDK	I don't know
1797	IDL	Interface Definition Language
1798	IDN	Indonesia (ISO 3166 trigram)
1799	IEA	International Energy Agency
1800	IEC	International Electrotechnical Commission
1801	IED	Improvised Explosive Device
1802	IELTS	International English Language Testing System
1803	IER	Information Exchange Requirement
1804	IET	Initial Entry Training
1805	IET	Institution of Engineering and Technology
1806	IETF	Internet Engineering Task Force
1807	IEW	Intelligence and Electronic Warfare
1808	IFAB	International Football Association Board
1809	IFAH	International Federation for Animal Health
1810	IFAP	International Federation of Agricultural Producers
1811	IFO	Identified Flying Object (see also UFO)
1812	IFOV	Instantaneous Field of View
1813	IFPI	International Federation of Phonographic Industries
1814	IFRB	International Frequency Registration Board
1815	IFV	Infantry Fighting Vehicle
1816	IG	Inspector General
1817	IGNOU	Indira Gandhi National Open University
1818	IGS	International Ground Station
1819	IHH	Idiopathic Hypogonadotropic Hypogonadism
1820	IHO	International Hydrographic Organization
1821	IHR	Institute for Historical Review
1822	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1823	II	Two (in Roman numerals)
1824	IICA	Inter-American Institute for Cooperation on Agriculture
1825	IIE	Innovative Interstellar Explorer
1826	III	Three (in Roman numerals)
1827	IIRC	If I Recall/Remember Correctly
1828	IISS	International Institute for Strategic Studies
1829	IJN	Imperial Japanese Navy (World War II)
1830	IJWP	Interim Joint Warfare Publication
1831	ILDS	Improved Landmine Detection System
1832	ILO	International Labour Organization
1833	ILRI	International Livestock Research Institute
1834	ILY	I Love You [pronounced ILL-LEE]
1835	IM	Instant Message (internet speech)
1836	IMBD	International Migratory Bird Day
1837	IMDb	Internet Movie Database
1838	IME	In My Experience
1839	IMHO	In My Humble/Honest Opinion
1840	IML	International Mister Leather
1841	IMNSHO	In My Not So Humble Opinion
1842	IMPAC	International Merchant Purchase Authorization Card
1843	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1844	IMPATT	IMPact Avalanche Transit Time diode
1845	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1846	IMRL	Individual Material iness List
1847	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1848	IMsL	International Ms. Leather
1849	IMT	Integrated Management Tool
1850	IMU	International Mathematical Union
1851	IN	India (ISO 3166 digram),Indiana (postal symbol),Infantry
1852	In	Indium
1853	INA	Immigration and Nationality Act
1854	INAS	International Near-Earth Asteroid Survey
1855	INCITS	InterNational Committee for Information Technology Standards
1856	IND	India (ISO 3166 trigram)
1857	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1858	inet	the Internet
1859	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1860	INFOSEC	Information Security
1861	INLA	Irish National Liberation Army
1862	INMARSAT	International Maritime Satellite organization
1863	INRIA	Institut national de recherche en informatique et en automatique
1864	INS	Immigration and Naturalization Service
1865	InSAR	Interferometric synthetic aperture radar
1866	INST	Information Standards and Technology
1867	INTERFET	International Force for East Timor
1868	INTSUM	Intelligence Summary
1869	IO	British Indian Ocean Territory (ISO 3166 digram)
1870	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1871	IPB	Intelligence Preparation of the Battlefield
1872	IPL	Inferior Parietal Lobule
1873	IPO	Initial Public Offering
1874	IPT	Integrated Product/Project Team
1875	IPTS	Institute for Prospective Technological Studies
1876	IPTV	Internet Protocol TeleVision
1877	IPW	Interrogation of Prisoners of War
1878	Ir	Iridium
1879	IRAD	Internal Research and Development
1880	IRAN	(I) Inspect and Repair As Necessary
1881	IRAS	Infrared Astronomical Satellite
1882	IRB	International Rugby Board
1883	IRBM	Intermediate Range Ballistic Missile
1884	IREA	Intermountain Rural Electric Association
1885	IRINN	Islamic Republic of Iran News Network
1886	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1887	IRN	Iran (ISO 3166 trigram)
1888	IRO	International Refugee Organisation
1889	IRQ	Iraq (ISO 3166 trigram)
1890	IRS	U.S. Internal Revenue Service
1891	IRST	Infra-red Search and Track
1892	IS	Iceland (ISO 3166 digram)
1893	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1894	ISAR	Inverse SAR (Synthetic Aperture Radar)
1895	ISB	Intermediate Staging Base
1896	ISBN	International Standard Book Number (ISO 2108)
1897	ISCCP	International Satellite Cloud Climatology Project
1898	ISCII	Indian Standard Code for Information Interchange
1899	ISDN	Integrated Services Digital Network
1900	ISEF	Intel International Science and Engineering Fair
1901	ISEN	Internet Search Environment Number
1902	ISF	Internal Security Force
1903	ISIL	Islamic State of Iraq and the Levant
1904	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1905	ISL	Iceland (ISO 3166 trigram)
1906	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1907	ISMB	International Society of Matrix Biologists
1908	ISMC	Intelligent Sounding Meaningless Conversation
1909	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1910	ISPE	International Society for Pharmacoepidemiology
1911	ISRO	Indian Space Research Organisation
1912	ISSCR	International Society for Stem Cell Research
1913	ISSN	International standard serial number (ISO 3297)
1914	ISTC	Institute of Scientific and Technical Communications (UK)
1915	ISTS	Intel Science Talent Search
1916	ITA	Italy (ISO 3166 trigram)
1917	ITAG	Inertial Terrain-Aided Guidance
1918	ITALY	I'll Truly Always Love You
1919	ITAS	Improved Target Acquisition Sight
1920	ITC	InferoTemporal Cortex (neurophysiology)
1921	ITCZ	Intertropical Convergence Zone
1922	ITEC	Information Technology Exposition & Conference
1923	ITEMS	Interactive Tactical Environment Management System
1924	ITER	International Thermonuclear Experimental Reactor
1925	ITF	International Tennis Federation
1926	ITK	In The Know
1927	ITN	Independent Television News (British)
1928	ITT	International Telephone and Telegraph (U.S.)
1929	ITTO	International Tropical Timber Organization
1930	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1931	IV	Four (in Roman numerals),IntraVenous (as in intravenous drip or intravenous therapy)
1932	Iveco	Industrial Vehicles Corporation
1933	IVF	In Vitro Fertilisation
1934	IVI	Interchangeable Virtual Instrument
1935	IVIS	Inter-Vehicle Information System
1936	IVL	Inter-Visibility Line
1937	IVM	In Vitro [Oocyte] Maturation
1938	IVO	In Vicinity Of
1939	IW	Information Warfare
1940	IWARS	Infantry Warrior Simulation
1941	IWC	International Whaling Commission
1942	IWW	Industrial Workers of the World
1943	IX	Nine (in Roman numerals)
1944	IXT	IntraText digital library; IntraText lexical hypertext
1945	J	Joule
1946	J1	Joint [Manpower &] Personnel Directorate
1947	J2	Joint Intelligence Directorate
1948	J3	Joint Operations Directorate
1949	J4	Joint Logistics Directorate
1950	J5	Joint Strategic Plans & Policy Directorate
1951	J7	Joint Operational Plans & Interoperability Directorate
1952	JAFT	Just A Field Test
1953	JAL	Japan Airlines
1954	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1955	JAM	Jamaica (ISO 3166 trigram)
1956	JAMA	Journal of the American Medical Association
1957	JANET	Joint Academic Network
1958	JATO	Jet-Assisted Take-Off
1959	JB	Jail Bait
1960	JB	Junior Branch
1961	JBFSA	Joint Blue Force Situational Awareness
1962	JCDB	Joint Common Data Base
1963	JCDS	Joint Chiefs of the Defence Staff
1964	JCIDS	Joint Capabilities Integration and Development System
1965	JCL	Job Control Language
1966	JCP	Java Community Process
1967	JCS	Joint Chiefs of Staff
1968	JCW	Juggalo Championship Wrestling
1969	JDBC	Java Data Base Connectivity
1970	JDEM	Joint Dark Energy Mission
1971	JDL	Jewish Defense League
1972	JEFX	Joint Expeditionary Force eXperiment
1973	JET	Joint European Torus
1974	JEZ	Joint Engagement Zone
1975	JFACC	Joint Force Air Component Commander
1976	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1977	JFC	Joint Force Commander
1978	JFK	John Fitzgerald Kennedy or the airport named after him.
1979	JFLCC	Joint Force Land Component Commander
1980	JFMCC	Joint Force Maritime Component Commander
1981	JFO	Journal of Field Ornithology
1982	JFSOCC	Joint Force Special Operations Component Commander
1983	JFTX	Joint Field Training Exercise
1984	JH	Japan Highway Public Corporation
1985	JH	Jharkhand (Indian state code)
1986	JI	Joint Implementation
1987	JIB	Joint Information Bureau
1988	JIC	Joint Intelligence Centre
1989	JINI	Java Intelligent Network Infrastructure
1990	JITC	Joint Interoperability Test Command
1991	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1992	JJAP	Japanese Journal of Applied Physics
1993	JL	Japan Airlines (IATA airline designator)
1994	JLA	Justice League of America
1995	JM	Jamaica (ISO 3166 digram)
1996	JMS	Java Message Service
1997	JO	Jordan (ISO 3166 digram)
1998	JOA	Joint Operations Area
1999	JOPES	Joint Operations Planning and Execution System
2000	JOR	Jordan (ISO 3166 trigram)
2001	JOTS	Joint Operations Tactical System
2002	JPL	Jet Propulsion Laboratory
2003	JPN	Japan (ISO 3166 trigram)
2004	JPOW	Joint Project Optic Windmill
2005	JRDF	Joint Rapid Deployment Forces
2006	JRE	Java Runtime Environment
2007	JREF	James Randi Educational Foundation
2008	JROC	Joint Requirements Oversight Council
2009	JROCM	JROC Memorandum
2010	JRRF	Joint Rapid Reaction Force
2011	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
2012	JSAP	Japan Society of Applied Physics
2013	JSCSC	Joint Services Command and Staff College
2014	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
2015	JSF	Joint Strike Fighter
2016	JSIMS	Joint Simulation System
2017	JSOA	Joint Special Operations Area
2018	JSOTF	Joint Special Operations Task Force
2019	JSP	JavaServer Page
2020	JSP	Joint Services Publication
2021	JSR	Java Specification Request
2022	JSS	Joint Support Ship Project
2023	JTC	Joint Training Confederation
2024	JTF	Joint Task Force
2025	JTFEX	Joint Task Force Exercise
2026	JTLS	Joint Theater Level Simulation
2027	JTMD	Joint Theatre Missile Defence
2028	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
2029	JUGFET	JUnction Gate Field-Effect Transistor
2030	JUICE	JUpiter ICy Moon Explorer
2031	JUO	Joint Urban Operations
2032	JV	Joint Venture,Junior Varsity
2033	JW	Jehovah's Witnesses
2034	JWARS	Joint Warfare System (simulation)
2035	JWP	Joint Warfare Publication
2036	JY	Japanese Yen
2037	JZ	Joint Zone
2038	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
2039	k	Kilo-
2040	K	picokelvin
2041	K9	Canine Police Unit
2042	Ka	Kamov Design Bureau
2043	kA	Kiloampere
2044	KA	Knowledge Acquisition,Karnataka (Indian state code)
2045	KAF	Kandahar Air Field
2046	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2047	KARNAC	Knowledge Aided Retrieval in Activity Context
2048	KARR	Knight Automated Roving Robot (Knight Rider character)
2049	KATUSA	Korean Augmentation To United States Army
2050	KAZ	Kazakhstan (ISO 3166 trigram)
2051	KBE	Knight Commander of the Order of the British Empire
2052	KBO	Kuiper Belt Object
2053	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2054	kC	Kilocoulomb
2055	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2056	KCL	King's College London
2057	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2058	KCS	Kansas City Southern Railway (AAR reporting mark)
2059	KD	Kawasaki Disease,Kraft Dinner
2060	KE	Kenya (ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2061	KEDO	Korean Peninsula Energy Development Organization
2062	KEN	Kenya (ISO 3166 trigram)
2063	KERA	Kentucky Education Reform Act (of 1990)
2064	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2065	KESR	Kent and East Sussex Railway.
2066	KET	Kentucky Educational Television,Key English Test
2067	kF	Kilofarad
2068	KFC	Kentucky Fried Chicken
2069	KFOR	UN Kosovo Force
2070	KFUPM	King Fahd University of Petroleum & Minerals
2071	KG	Kyrgyzstan (ISO 3166 digram)
2072	KGO	Knight of the Guelphic Order of Hanover
2073	KGZ	Kyrgyzstan (ISO 3166 trigram)
2074	KH	Cambodia (ISO 3166 digram)
2075	kH	Kilohenry
2076	KHL	Kontinental Hockey League
2077	KHM	Cambodia (ISO 3166 trigram)
2078	KHz	Kilohertz
2079	Ki	Kibi
2080	KI	Kiribati (ISO 3166 digram)
2081	KIA	Killed In Action
2082	KIDS	Knowledge-based Integrated Design System
2083	KIR	Kiribati (ISO 3166 trigram)
2084	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2085	KIT	Keep In Touch
2086	KITECH	Korean Institute of Industrial Technology
2087	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2088	kJ	Kilojoule
2089	kK	Kilokelvin
2090	KKK	Ku Klux Klan
2091	kL	Kilolitre
2092	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2093	KLOC	Kilo Lines Of Code
2094	KM	Comoros,Knowledge Management
2095	kN	Kilonewton
2096	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2097	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2098	KO	Knocked Out
2099	KOR	Republic of Korea (ISO 3166 trigram)
2100	KP	Kim Possible
2101	KPMG	Klynveld,Peat,Marwick,Goerdeler
2102	KPNO	Kitt Peak National Observatory
2103	KQ	Kenya Airways (IATA airline designator)
2104	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2105	Kr	Krypton
2106	KS	Kansas (postal symbol)
2107	kS	Kilosiemens
2108	KSC	Kennedy Space Center
2109	KSI	Killed or Seriously Injured
2110	KSU	Kansas State University
2111	KT	Knight of the Order of the Thistle, Knights Templar
2112	kT	Kilotesla
2113	KTS	Knight of the Tower and Sword (of Portugal)
2114	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2115	kV	Kilovolt
2116	KV	Kosovo
2117	kW	Kilowatt
2118	KW	Kuwait (ISO 3166 digram)
2119	KWB	Kids' WB!
2120	KWT	Kuwait (ISO 3166 trigram)
2121	KX	Cayman Airways (IATA airline designator)
2122	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2123	KZ	Kazakhstan (ISO 3166 digram)
2124	KZN	KwaZulu-Natal
2125	La	Lanthanum
2126	LA	Laos (ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2127	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2128	LAB	Logistics Assault Base
2129	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2130	LACMA	Los Angeles County Museum of Art
2131	LAD	Laser Aiming Device
2132	LADW	Local Air Defence Warning
2133	LAESI	Local Authority & Emergency Service Information
2134	LANL	Los Alamos National Laboratory
2135	LAO	Laos (ISO 3166 trigram)
2136	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2137	LARC	Livermore Advanced Research Computer (cf. LLNL)
2138	LARP	Live-Action Role-Playing
2139	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2140	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2141	LATA	Local Access Transport Area
2142	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2143	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2144	LAW	Light Antitank Weapon
2145	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2146	LB	Lebanon (ISO 3166 digram)
2147	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2148	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2149	LBN	Lebanon (ISO 3166 trigram)
2150	LBNL	Lawrence Berkeley National Laboratory
2151	LBR	Liberia (ISO 3166 trigram)
2152	LBS	Location-Based Services
2153	LBT	Large Binocular Telescope
2154	LBW	Leg Before Wicket
2155	LBY	Libya (ISO 3166 trigram)
2156	LCA	Saint Lucia (ISO 3166 trigram)
2157	LCC	Land Component Commander
2158	LCCP	Light Contingency Communications Package
2159	LCD	Liquid Crystal Display
2160	LCM	Least/Lowest Common Multiple
2161	LCS	League of Legends Championship Series
2162	LDA	Lateral Drift Apparatus (paratroops)
2163	LDC	Lesser Developing/Developed Country
2164	LDL	Low-Density Lipoprotein
2165	LDV	Local Defence Volunteers (British Home Guard)
2166	LDW	Lane Departure Warning (ADAS)
2167	LEC	Local Exchange Carrier
2168	LED	Light-Emitting Diode
2169	LEGAD	Legal Advice
2170	Legs	level emotion gad speed
2171	LEMOSS	Long-Endurance MObile Submarine Simulator
2172	LEN	Large Extension Node
2173	LEP	Large Electron-Positron collider
2174	LER	Loss-Exchange Ratio
2175	LEU	Low-Enriched Uranium
2176	LF	Low Frequency
2177	LFO	Low Frequency Oscillation / Oscillator
2178	LFTR	Liquid fluoride thorium reactor
2179	LGB	Lesbian,Gay,Bisexual
2180	LGBT	Lesbian,Gay,Bisexual,Transgender
2181	LGBTQ	Lesbian,Gay,Bisexual,Transgender,Queer
2182	LGLO	Love God,Love Others
2183	LGM	Little Green Men
2184	LGS	Landsat Ground Station
2185	LH	Luteinising Hormone
2186	LHC	Large Hadron Collider
2187	LHS	Left Hand Side
2188	LI	Fifty-one (in Roman numerals),Liechtenstein (ISO 3166 digram)
2189	Li	Lithium
2190	LIBOR	London Interbank Offered Rate
2191	LIBS	Laser Induced Breakdown Spectroscopy
2192	LIE	Liechtenstein (ISO 3166 trigram)
2193	LIGO	Laser Interferometer Gravitational-Wave Observatory
2194	LINEAR	Lincoln Near-Earth Asteroid Research
2195	LISA	Laser Interferometer Space Antenna
2196	LIVE	Liquid Inertial Vibration Eliminator
2197	LJJ	Lord Justices of Appeal
2198	LK	Sri Lanka (ISO 3166 digram)
2199	LKA	Sri Lanka (ISO 3166 trigram)
2200	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2201	LLAD	Low Level Air Defence
2202	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2203	LLC	Limited Liability Company
2204	LLLTV	Low-Light Level Television
2205	LLNL	Lawrence Livermore National Laboratory
2206	LLP	Limited Liability Partnership
2207	LLTR	Low-Level Transit Route
2208	LMAO	Laughing My Ass Off (Internet shorthand)
2209	LMB	Lick My Balls
2210	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2211	LMN	Lifetime Movie Network
2212	LMS	Like My Status (Internet shorthand)
2213	LMV	() Light Motor Vehicle
2214	LNER	London and North Eastern Railway
2215	LNG	Liquefied Natural Gas
2216	LNO	Liaison Officer
2217	LNR	Ligue Nationale de Rugby (French for: 'National Rugby League')
2218	LOA	Limit Of Advance
2219	LOC	Level of Operational Capability, Limited Operational Capability
2220	LOD	Limit of Detection,see Detection limit
2221	LoD	Lines of Development (UK)
2222	LOFAR	Low Frequency Analysis and Recording
2223	LOGPAC	Logistics Package
2224	LOL	Laughing Out Loud (Internet shorthand)
2225	LOMEZ	Low Altitude Missile Engagement Zone
2226	LONEOS	Lowell Observatory Near-Earth-Object Search
2227	LOOGY	Lefty One-Out GuY,a sometimes pejorative nickname for the left-handed specialist in baseball
2228	LORTID	LOng Range Target IDentification
2229	LOS	Line Of Sight
2230	LOSAT	Line-Of-Sight Anti-Tank (missile)
2231	LOTA	Licentiate of the Orthodontic Technicians Association
2232	LOTIS	Livermore Optical Transient Imaging System
2233	LOTS	Logistics Over-The-Shore
2234	LP	Linkin Park,Linkup Point,Listening Post,Long Playing record,Louisiana Pacific (cf. LP Field)
2235	LPC	Linear Predictive Coding
2236	LPD	Landing Platform Dock (Navy hull classification),Low Probability of Detection
2237	LPG	Liquefied Petroleum Gas (cf. LNG)
2238	LPI	Low Probability of Intercept
2239	LPS	Landsat Processing System,LipoPolySaccharide
2240	Lr	Lawrencium
2241	LR	Liberia (ISO 3166 digram)
2242	LRC	Logistics iness Center
2243	LRGW	Long-Range Guided Weapon
2244	LRICBM	Limited Range ICBM
2245	LRIP	Low Rate Initial Production
2246	LRP	Logistics Release Point
2247	LRPE	Long-Range Planning Element
2248	LRS	Long Range Surveillance
2249	LRU	Line-Replaceable Unit
2250	LSAT	Law School Admission Test (often pronounced as 'el-SAT')
2251	LSI	Large-Scale Integration
2252	LSIF	Labour Sponsored Investment Fund
2253	LSND	Liquid Scintillator Neutrino Detector
2254	LSO	Lesotho (ISO 3166 trigram)
2255	LSST	Large Synoptic Survey Telescope
2256	LST	Landing Ship,Tank (World War II; also known,not entirely affectionately,as 'Large Slow Target')
2257	LSVW	Light Support Vehicle,Wheeled
2258	LT	Lithuania (ISO 3166 digram)
2259	Lt	Lieutenant
2260	LtC	Lieutenant-Colonel (U.S.)
2261	LTC	Long-Term Costing
2262	Ltd	Limited
2263	LTDP	Long-Term Defence Plan
2264	LTG	Lieutenant General,Lightning (METAR Code)
2265	LTI	Linear Time-Invariant
2266	LTM	Acronym for Laughing To Myself
2267	LTP	Long-Term Potentiation
2268	LTU	Lithuania (ISO 3166 trigram)
2269	LU	Acronym Love You
2270	LU	Loonatics Unleashed
2271	Lu	Lutetium
2272	LUCA	Last Universal Common Ancestor
2273	LUG	Linux User Group
2274	LULU	Locally Unwanted Land Use (urbanism)
2275	LUT	Limited User Test (ing),Local User Terminal
2276	LUVW	Light Utility Vehicle,Wheeled
2277	LUX	Luxembourg (ISO 3166 trigram)
2278	LV	Las Vegas,Latvia (ISO 3166 digram),Launch Vehicle,Leading Vehicle,Leave,Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria
2279	LVA	Latvia (ISO 3166 trigram)
2280	LVAD	Left Ventricular Assist Device,Low-Velocity Airdrop
2281	LVEF	Left Ventricular Ejection Fraction
2282	LW	Land Warrior,Low Water (nautical charts)
2283	Lw	Lawrencium (obsolete 1963)
2284	LWR	Laser warning receiver
2285	LWRC	Land Warfare Resources Corporation
2286	LWS	Land Warrior System
2287	LX	Electrics (theatrical term)
2288	LX	Luxembourg (amateur radio ITU prefix),Swiss International Air Lines (IATA code)
2289	LY	Libya (ISO 3166 digram),Lithuania (amateur radio ITU prefix)
2290	LYAO	Laugh Your Ass Off
2291	LYLAS	Love You Like A Sister
2292	LZ	Bulgaria (amateur radio ITU prefix),Landing Zone
2293	M	Mega-,One thousand (in Roman numerals)
2294	m	Metre,Milli
2295	MA	Marijuana Anonymous,Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram)
2296	Ma	Megaannum
2297	mA	Milliampere
2298	MAA	Mathematical Association of America
2299	MAAC	Metro Atlantic Athletic Conference
2300	MACE	Multi-Agent Computing Environment
2301	MACHO	MAssive Compact Halo Object
2302	MADD	Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency,Multiply-Add
2303	MAF	Maintenance Action Form
2304	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2305	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2306	MAGTF	Marine Air-Ground Task Force
2307	Mahasz	Magyar Hanglemezkiadók Szövetsége (Hungarian for: 'Association of Hungarian Record Companies')
2308	MALD	Miniature Air-Launched Decoy
2309	MANPADS	MAN-Portable Air Defence System
2310	MANPRINT	MANpower and PeRsonnel INTegration
2311	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2312	MAOI	Monoamine oxidase inhibitor
2313	MAPS	Monitoring Avian Productivity and Survivorship
2314	MAR	Morocco (ISO 3166 trigram)
2315	MarBEF	Marine Biodiversity and Ecosystem Functioning
2316	MARCENT	United States Marine Forces Central Command
2317	MARFORCC	Marine Force Component Commander
2318	MASAS	Monte Agliale Supernovae and Asteroid Survey
2319	Maser	Microwave Amplification by Stimulated Emission of Radiation
2320	MASH	Mobile Army Surgical Hospital
2321	MASINT	Measurement And Signature Intelligence
2322	MAVS	Mobile Artillery Vehicle System
2323	MB	Manitoba (postal symbol),Medal of Bravery (Canada)
2324	MBA	Main Battle Area,Main Belt Asteroid,Masters of Business Administration
2325	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2326	MBCC	Migratory Bird Conservation Commission (U.S.)
2327	MBCS	Multi-Byte Character Set
2328	MBI	Moody Bible Institute
2329	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2330	MBM	Meat and Bone Meal
2331	MBT	Main Battle Tank
2332	MBTI	Myers-Briggs Type Indicator
2333	mC	Millicoulomb
2334	MCDL	Model Composition Definition Language
2335	MCFT	Modified Compression Field Theory
2336	MCG	Melbourne Cricket Ground
2337	MCIS	Mellon Collie and the Infinite Sadness
2338	MCM	Mine Counter-Measures
2339	MCMV	Mine Counter-Measure Vessel
2340	MCR	My Chemical Romance
2341	MCSF	Marine Corps Security Forces
2342	MCT	Movement Control Team
2343	MCTIS	Mounted Co-operative Target Identification System
2344	Md	Mendelevium
2345	MDNA	Madonna's 12th studio album title (2012)
2346	MDO	Membership Driven Organisation
2347	MDP	Markov Decision Process
2348	MDT	Mountain Daylight Time (UTC-6 hours)
2349	MDV	Maldives (ISO 3166 trigram)
2350	Me	Messerschmitt
2351	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2352	MECO	Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation)
2353	MEDEVAC	Medical evacuation
2354	MEDS	Mission Essential Data Set
2355	MEG	MagnetoEncephaloGraphy
2356	MELT	Metallic Line/Loop Test (ing)
2357	MEMS	Microelectromechanical System
2358	MER	Mars Exploration Rover
2359	MERL	Mitsubishi Electric Research Laboratories
2360	MES	Manufacturing Execution Systems
2361	METAR	[Meteorological] Aviation Routine weather report
2362	METOC	Meteorological and Oceanographic
2363	MeV	Megaelectronvolt
2364	MEX	Mexico (ISO 3166 trigram)
2365	MEZ	Missile Engagement Zone
2366	MF	Megafarad
2367	mF	Millifarad
2368	MG	Machine Gun,Madagascar (ISO 3166 digram),Major General,Morris Garage
2369	MGPAM	My Gym Partner's a Monkey
2370	MGS	Mobile Gun System
2371	mH	Millihenry
2372	MHC	Major Histocompatibility Complex
2373	MHHW	Mean Higher High Water (nautical charts)
2374	MHL	Marshall Islands (ISO 3166 trigram)
2375	MHLW	Mean Higher Low Water (nautical charts)
2376	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2377	MHW	Mean High Water (nautical charts)
2378	MHWN	Mean High Water Neaps (nautical charts)
2379	MHWS	Mean High Water Springs (nautical charts)
2380	MHz	Megahertz
2381	Mi	Mebi
2382	MIA	Missing In Action
2383	MICLIC	Mine Clearing Line Charge
2384	MICOM	Missile Command
2385	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2386	MIDAS	Man-machine Integration Design and Analysis System
2387	MIDI	Musical Instrument Digital Interface
2388	MIDS	Multi-Function Information Distribution System
2389	MIFG	Shallow Fog (METAR Code)
2390	MIKE	Monitoring of Illegal Killing of Elephants
2391	MIL	Man-In-the-Loop
2392	MILC	Mirrorless interchangeable-lens camera
2393	MILF	Mother I'd Like to Fuck
2394	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2395	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2396	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2397	MIRV	Multiple Independent Reentry Vehicle
2398	MISREP	Mission Report
2399	MISSI	Multilevel Information System Security Initiative
2400	MITL	Man-In-The-Loop
2401	MITS	see entry
2402	mJ	Millijoule
2403	MJD	Modified Julian Day
2404	mK	Millikelvin
2405	MKG	Michael Kidd-Gilchrist (American basketball player)
2406	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2407	mL	Millilitre
2408	MLB	Major League Baseball
2409	MLC	Member of the Legislative Council (in India)
2410	MLE	Maximum likelihood estimation
2411	MLHW	Mean Lower High Water (nautical charts)
2412	MLI	Mali (ISO 3166 trigram)
2413	MLL	Major League Lacrosse
2414	MLLW	Mean Lower Low Water (nautical charts)
2415	MLP	My Little Pony
2416	MLRS	Multiple-Launch Rocket System
2417	MLT	Malta (ISO 3166 trigram)
2418	MLW	Mean Low Water (nautical charts)
2419	MLWN	Mean Low Water Neaps (nautical charts)
2420	MLWS	Mean Low Water Springs (nautical charts)
2421	Mm	Megametre
2422	mm	Millimetre
2423	MMEV	Multi-Mission Effects Vehicle
2424	MMI	Magical MonkeyZ Inc.
2425	MMI	Man-Machine Interface
2426	MMI	McLean Meditation Institute
2427	MMIC	McLean Meditation Institute Certified
2428	MMO	Massively Multiplayer Online (computer game)
2429	MMOR	Master of Management in Operations Research
2430	MMORPG	Massively multiplayer online role-playing game
2431	MMPR	Mighty Morphin Power Rangers
2432	MMS	Multimission Modular Spacecraft
2433	Mn	Manganese
2434	mN	Millinewton
2435	MNB	Multinational Brigade
2436	MNE	Montenegro (ISO 3166 trigram)
2437	MNMF	Multi-National Maritime Force
2438	MNP	Northern Mariana Islands (ISO 3166 trigram)
2439	MNS	Mission Needs Statement
2440	Mo	Molybdenum
2441	MOA	Museum of Art (Brigham Young University)
2442	MOCAS	Mechanization Of Contract Administration Services
2443	MoD	Ministry of Defence (United Kingdom) and various other countries
2444	modem	Modulator-Demodulator
2445	Moe	Marvel of entertainment
2446	MOE	Measure Of Effectiveness
2447	MOF	Ministry of Finance (Japan)
2448	MOFA	Ministry of Foreign Affairs (Japan)
2449	MOID	Minimum Orbital Intersection Distance
2450	MOJWA	Movement for Oneness and Jihad in West Africa
2451	MOLO	Mobile Other Licensed Operator (UK)
2452	MOM	Master's Degree in Oriental medicine
2453	MOM	Message Oriented Middleware
2454	MoM	Multiple of the median
2455	MoMA	Museum of Modern Art (NYC)
2456	MOND	Modified Newtonian Dynamics
2457	MOO	Measure Of Outcome
2458	MOPP	Mission-Oriented Protective Posture
2459	MORP	Meteorite Observation and Recovery Project
2460	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2461	MOT	Ministry of Transport (UK)
2462	MOTA	Member of the Orthodontic Technicians Association
2463	MOTESS	Moving Object and Transient Event Search System
2464	MOU	Memorandum Of Understanding
2465	MOW	Maintenance of way (also MW)
2466	MOZ	Mozambique (ISO 3166 trigram)
2467	MPa	Megapascal
2468	mPa	Millipascal
2469	MPAA	Motion Picture Association of America
2470	MPEC	Minor Planet Electronic Circular
2471	MPEG	Motion Pictures (Coding) Experts Group
2472	MPEV	Multi-Purpose Engineering Vehicle
2473	MPF	Maritime Prepositioning Force
2474	MPFC	Medial PreFrontal Cortex
2475	MPG	Miles Per Gallon
2476	MPMC	Medial PreMotor Cortex
2477	MPSI	Member of the Pharmaceutical Society of Ireland
2478	MPSoC	MultiProcessor System-on-Chip
2479	MPSRON	Maritime Propositioning Ship Squadron
2480	MR	Mauritania (ISO 3166 digram)
2481	MRAV	Multi-Role Armoured Vehicle
2482	MRBM	Medium Range Ballistic Missile
2483	MRC	Maintenance Requirements Card
2484	MRD	Motorized Rifle Division
2485	MRGW	Medium-Range Guided Weapon
2486	MRI	Magnetic Resonance Imaging
2487	MRL	Multiple Rocket Launcher
2488	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2489	MRS	Magnetic Resonance Spectroscopy
2490	MRSA	Methicillin-resistant Staphylococcus aureus
2491	MRTFB	U.S. Major Range and Test Facility Base
2492	Ms	Megasecond
2493	mS	Millisiemens
2494	MSD	Minimum Safe Distance
2495	MSDB	Multi Source Data Base
2496	MSE	Multiple Subscriber Element
2497	MSG	Message
2498	MSLP	Mean Sea Level Pressure
2499	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2500	MSO	Multiple System Operator

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