PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
2	0D	obvious deed
3	1AM	Air Mechanic 1st Class
4	1D	One-Dimensional
5	2AM	Air Mechanic 2nd Class
6	2D	Two-dimensional
7	2LA	Two Letter Acronym
8	2Lt	2nd Lieutenant
9	3AM	Air Mechanic 3rd Class
10	3D	Three-Dimensional
11	3G	Third-generation mobile telephone system
12	3i	Investors In Industry (venture capitalists)
13	3M	Minnesota Mining and Manufacturing Company
14	4G	Fourth-generation mobile telephone system
15	4WD	Four-wheel drive
16	5D	Five-Dimensional
17	6D	Six-Dimensional
18	7D	Seven-Dimensional
19	8D	Eight-Dimensional
20	9D	Nine-Dimensional
21	A	Ampere
22	A10	Atlantic 10 Conference
23	A1C	Airman First Class
24	A4	European standard office paper size
25	aA	Attoampere
26	AAA	administration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
27	AAAS	American Association for the Advancement of Science
28	AAAV	Advanced Amphibious Assault Vehicle
29	AADAC	Alberta Alcohol and Drug Abuse Commission
30	AADD	Adult attention deficit disorder
31	AADT	annual average daily traffic
32	AAFES	Army and Air Force Exchange Service
33	AAIS	advanced airborne interceptor simulator
34	AAM	air-to-air missile
35	AAMOF	as a matter of fact
36	AAN	American Academy of Nursing
37	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
38	AAODL	Atmospheric Aerosols and Optics Data Library
39	AAPC	Accounting and Auditing Policy Committee
40	AARP	American Association of Retired Persons (now officially known only by the initials)
41	AASPEM	advanced air-to-air system performance evaluation model
42	AAT	Australian Antarctic Territory
43	AAV	Amphibious Assault Vehicle
44	AAWC	anti-air warfare commander
45	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
46	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
47	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48	ABC	the first three letters of the Latin script known as the alphabet
49	ABC	abstinence, be faithful, condoms
50	ABC	Active Body Control
51	ABC	airway, breathing, circulation
52	ABC	Alcoholic Beverage Commission
53	ABC	alien big cat
54	ABC	always be careful
55	ABC	American-born Chinese
56	ABC	anti-lock brake controller
57	ABC	atomic, biological, chemical
58	ABCS	(U.S.) Army Battle Command System
59	ABET	Accreditation Board for Engineering and Technology
60	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
61	ABGI	Addington-Barker Group International
62	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
63	ABL	American Basketball League
64	ABLE	AirBorne Law Enforcement (police air support unit)
65	ABMC	American Battle Monuments Commission
66	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67	ABPI	Association of the British Pharmaceutical Industry
68	ABRSM	Associated Board of the Royal Schools of Music
69	ABS	acrylonitrile butadiene styrene, or: anti-lock braking system
70	ABSA	Amalgamated Banks of South Africa
71	ABSTRIPS	abstraction-based STRIPS
72	ABV	Alcohol by volume
73	ABW	Aruba (ISO 3166 trigram)
74	Ac	Actinium
75	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Antigua and Barbuda (FIPS 10-4 country code),Associazione Calcio (Italian,'football (soccer) club'),A/C,Air Conditioned/Conditioning,Aircraft
76	aC	Attocoulomb
77	AC1	Aircraftman 1st Class
78	AC2	Aircraftman 2nd Class
79	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80	ACARS	Aircraft Communications Addressing and Reporting System
81	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83	ACCD	American Coalition of Citizens with Disabilities
84	ACCS	Air Communications and Control Squadron
85	ACDA	Arms Control & Disarmament Agency
86	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
88	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
90	ACHT	Average Call Hold Time
91	ACINT	Acoustic Intelligence
92	ACK	Acknowledge (telecommunications; cf. NAK)
93	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94	ACLJ	American Center for Law and Justice
95	ACLOS	Automatic CLOS (missile control system)
96	ACLS	American Council of Learned Societies
97	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98	ACM	many,including Association for Computing Machinery; see entry
99	ACMC	(U.S.) Assistant Commandant of the Marine Corps
100	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101	ACNA	Anglican Church in North America
102	ACO	Airspace Control Order
103	ACOBA	Advisory Committee on Business Appointments
104	ACOG	American College of Obstetricians and Gynecologists
105	ACOM	(U.S.) Atlantic Command
106	ACORN	Association of Community Organizations for Reform Now
107	ACP	African,Caribbean and Pacific Group of States,Air Control Point
108	ACR	Advanced Concepts and Requirements
109	ACRI	African Crisis Initiative
110	ACRT	Advanced Concepts Research Tool simulator
111	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112	ACSC	Army Command and Staff College (various nations)
113	ACST	American Cooperative School of Tunis
114	ACST	Australian Central Standard Time
115	ACT	Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP,AIDS Coalition to Unleash Power
116	ACTD	Advanced Concept Technology Demonstration
117	ACTF	(U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R,ACT-Rational (cognitive model),ACT-R/PM,ACT-R/Perceptual-Motor (cognitive model)
118	ACTU	Australian Council of Trade Unions
119	ACU	American Conservative Union
120	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
121	AD	Air Defence,Andorra (ISO 3166 digram),Anno Domini (Latin,'In the year of our Lord')
122	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124	ADAGE	Air Defense Air to Ground Engagement (simulation)
125	ADAP	AIDS Drug Assistance Program
126	ADAS	Asiago-DLR Asteroid Survey
127	ADAT	Alesis Digital Audio Tape (recording format)
128	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129	ADB	Asian Development Bank
130	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132	ADDIE	Analyze Design Develop Implement and Evaluate
133	ADDNS	Advanced Deployable Day/Night Simulation
134	ADGB	Air Defence of Great Britain
135	ADHD	Attention-Deficit Hyperactivity Disorder
136	ADHS	Attention-Deficit Hyperactivity Syndrome
137	ADI	Acceptable/Allowable Daily Intake
138	ADIZ	Air Defence Identification Zone
139	ADL	Anti-Defamation League
140	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141	ADOA	Air Defence Operations Area
142	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
144	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
145	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
146	ADT	Atlantic Daylight Time (UTC−3 hours)
147	ADTB	Army Doctrine and Training Bulletin
148	ADW	Air Defence Warning
149	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
150	AEDT	Australian Eastern Daylight Time
151	AEF	American Expeditionary Force
152	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
153	AESR	Aeronautical Equipment Service Record
154	AEST	Australian Eastern Standard Time
155	aet	After extra time (Football)
156	AEW	Airborne Early Warning,Airborne Electronic Warfare
157	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
158	aF	Attofarad
159	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160	AFAIC	As Far As I'm Concerned
161	AFAICT	As Far As I Can Tell
162	AFAIK	As Far As I Know
163	AFAIR	As Far As I Remember/Recall
164	AFAM	Associazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
165	AFATDS	Advanced Field Artillery Tactical Data System
166	AFCEA	Armed Forces Communications and Electronics Association
167	AFDB	African Development Bank
168	AFES	Automatic Fire Extinguishing System
169	AFG	Afghanistan (ISO 3166 trigram)
170	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171	AFIST	Abrams Full Crew Interactive Skills Trainer
172	AFJ	April Fool's Joke
173	AFK	Away From Keyboard (Internet chat abbreviation)
174	AFLAC	American Family Life Assurance Company of Columbus
175	AFO	Association of Field Ornithologists
176	AFOSR	U.S. Air Force Office of Scientific Research
177	AFQT	Armed Forces Qualification Test
178	AFRC	Air Force Reserve Command
179	AFRL	Air Force Research Laboratory
180	AFROTC	Air Force Reserve Officer Training Corps
181	AFRTS	Armed Forces Radio and Television Service
182	AFSCN	U.S. Air Force Satellite Control Network
183	AFSPC	Air Force Space Command
184	AFT	American Farmland Trust
185	AFV	armoured fighting vehicle
186	ag	Attogram
187	Ag	Silver (Latin argentum)
188	AGARD	Advisory Group for Aerospace Research and Development
189	AGARDograph	Advanced Guidance for Alliance Research and Development publication
190	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
191	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
192	AGC	Adjutant General's Corps (British Army)
193	AGDC	Australian Game Developers' Conference
194	AGI	Auxiliary Group Intelligence
195	AGL	Above Ground Level
196	AGM	Annual General Meeting
197	AGN	Active Galactic Nucleus
198	AGO	Angola (ISO 3166 trigram)
199	AGP	Accelerated Graphics Port
200	AGRICOLA	Agriculture Online Access
201	AGS	Alaska Ground Station (LandSat)
202	AGTS	Advanced Gunnery Training System
203	AGU	American Geophysical Union
204	AGW	Autonomous Guided Weapon
205	Ah	Ampere-hour
206	AH	Attack Helicopter
207	aH	Attohenry
208	AHA	American Heart Association
209	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
210	AHEC	Australian Health Ethics Committee
211	AHPCRC	Army High Performance Computing Research Center
212	AHQ	Air Headquarters
213	AHRQ	Agency for Healthcare Research and Quality
214	AHS	American Housing Survey
215	AIAA	American Institute of Aeronautics and Astronautics
216	AICD	Australian Institute of Company Directors
217	AICMFP	And I Claim My Five Pounds
218	AID	U.S. Agency for International Development
219	AIDS	Acquired Immune Deficiency Syndrome
220	AIM	Australian Institute of Management
221	AIMP	Aurora Incremental Modernization Project
222	AIPAC	American Israel Public Affairs Committee
223	AIR	Aircraft Inventory Record
224	AIRFA	American Indian Religious Freedom Act
225	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
226	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
227	aJ	Attojoule
228	AJ	Azerbaijan (FIPS 10-4 country code)
229	Ajax	Asynchronous JavaScript And XML
230	AJD	Astronomical Julian day
231	AJP	Allied Joint Publication
232	AJPW	All Japan Pro Wrestling
233	AK	Alaska (postal symbol)
234	aK	Attokelvin
235	AKA	Above knee amputation (orthopaedic usage)
236	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
237	AKST	Alaska Standard Time (UTC−9 hours)
238	Al	Aluminium
239	aL	Attolitre
240	ALA	Åland Islands (ISO 3166 trigram)
241	ALAP	As Long/Late As Possible
242	ALARM	Air-Launched Anti-Radar Missile
243	ALB	Albania (ISO 3166 trigram)
244	ALD	Accounting Line Designator (nuclear weapon targeting)
245	ALGOL	ALGOrithmic Language
246	ALPA	Air Line Pilots Association
247	ALSHS	Abraham Low Self-Help Systems
248	ALSP	Aggregate Level Simulation Protocol
249	ALTE	Association of Language Testers in Europe
250	Am	Americium
251	AM1	Airman 1st class
252	AMCB	U.S. Army/Marine Corps Board
253	AML	Acute Myeloid Leukaemia
254	AMLCD	Active Matrix Liquid Crystal Display
255	AMO	Atlantic Multidecadal Oscillation
256	AMOLED	Active-matrix organic light-emitting diode
257	AMRAAM	Advanced Medium-Range Air-to-Air Missile
258	AMSAA	U.S. Army Materiel Systems Analysis Activity
259	AMSO	U.S. Army Model and Simulation Office
260	AMSU	Advanced Microwave Sounding Unit
261	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
262	aN	Attonewton
263	ANC	African National Congress
264	AND	Andorra (ISO 3166 trigram)
265	ANFO	Ammonium nitrate/fuel oil (explosive)
266	ANGLiCo	Air/Naval Gunfire Liaison Company
267	ANL	Argonne National Laboratory
268	ANM	Acoustic Noise Monitor
269	ANOVA	ANalysis Of VAriance
270	ANS	Applied and Natural Sciences
271	ANSI	American National Standards Institute
272	ANTM	America's Next Top Model
273	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
274	ANZ	Australia and New Zealand Banking Group
275	ANZAC	Australian and New Zealand Army Corps
276	AOD	Adrenalin O.D. (punk rock band)
277	AOI	Angle Of Incidence Arab Organization for Industrialization
278	AOL	America OnLine
279	AOR	Area of Responsibility
280	AOSTH	Adventures of Sonic the Hedgehog
281	AOTS	Attack of the Show!
282	AOU	American Ornithologists' Union
283	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
284	APB	All Points Bulletin (police jargon)
285	APEC	Asia Pacific Economic Cooperation
286	APEDS	AMSAA Performance Estimates Data System
287	APEX	Applied Physics Express
288	APHA	American Public Health Association
289	APHIS	Animal and Plant Health Inspection Service
290	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
291	APOD	Aerial Port (Airport) Of Debarkation
292	APOE	Aerial Port (Airport) Of Embarkation
293	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
294	APP	Allied Procedural Publication
295	APR	Annual Percentage Rate
296	AQIM	Al-Qaeda in the Islamic Maghreb
297	Ar	Argon
298	ARAG	Advanced Research and Assessment Group
299	ARB	Administrative Review Board
300	ARBA	Army Review Boards Agency
301	ARCA	Automobile Racing Club of America
302	ARCENT	United States Army Central Command
303	ARDA	Advanced Research and Development Activity (became DTO 2006)
304	ARF	ASEAN Regional Forum
305	ARG	Argentina (ISO 3166 trigram)
306	ARH	Armed Reconnaissance Helicopter
307	ARNet	Acquisition Reform Network
308	ARP	Applied Research Programme
309	ARPA	Advanced Research Projects Agency
310	ARRC	ACE Rapid Reaction Corps
311	ARRF	Allied Rapid Reaction Force
312	ARRL	American Radio Relay League
313	ARSC	Arctic Region Supercomputing Center
314	ARSPACE	U.S. Army Space Command
315	ARTCC	Air Route Traffic Control Center
316	AS	ActionScript
317	As	Arsenic
318	aS	Attosiemens
319	ASAP	As Soon As Possible
320	ASBO	Anti-Social Behaviour Order
321	ASCII	American Standard Code for Information Interchange
322	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
323	ASEAN	Association of Southeast Asian Nations
324	ASFAR	Americans for a Society Free of Age Restrictions
325	ASG	Area Support Group
326	ASN	Associate of Science in Nursing
327	ASPI	Australian Strategic Policy Institute
328	ASRAAM	Advanced Short-Range Air-to-Air Missile
329	ASSC	Association for the Scientific Study of Consciousness
330	AST	Atlantic Standard Time (UTC−4 hours)
331	ASTIA	Armed Services Technical Information Agency
332	ASTM	American Society for Testing and Materials
333	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
334	ASUW	AntiSUrface Warfare
335	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
336	ASW	AntiSubmarine Warfare
337	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
338	ASX	Advanced Stream Redirector,Australian Securities Exchange
339	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
340	At	Astatine
341	aT	Attotesla
342	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
343	ATAC	Air Transportable Acoustic Communications
344	ATACMS	Army TACtical Missile System
345	ATAPI	Advanced Technology Attachment Packet Interface
346	ATAS	Air-To-Air Stinger (missile)
347	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
348	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
349	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
350	ATCCIS	Army Tactical Command and Control Information System
351	ATESS	Aerospace and Telecommunications Engineering Support Squadron
352	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
353	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
354	ATGM	Anti-Tank Guided Missile
355	ATGW	Anti-Tank Guided Weapon
356	ATK	Attack
357	ATL	Atlanta,Georgia,the largest city and capital of Georgia
358	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
359	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
360	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
361	ATO	Air Tasking Order,Australian Taxation Office
362	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
363	ATSD	(U.S.) Assistant Secretary of Defense
364	ATSDR	Agency for Toxic Substances and Disease Registry
365	ATV	All-Terrain Vehicle
366	ATWA	Air,Trees,Water,Animals
367	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
368	Au	Gold (Latin Aurum)
369	AUS	Australia (ISO 3166 trigram)
370	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
371	Auslan	Australian Sign Language
372	AUT	Austria (ISO 3166 trigram)
373	AUTL	Army Universal Task List
374	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
375	Av	Aperture value (photographic mode)
376	aV	Attovolt
377	AVA	American Viticultural Area
378	AVB	Audio Video Bridging
379	AVDLR	Aviation Depot Level Repair
380	AVGP	Armoured Vehicle, General Purpose
381	AVIM	Aviation Intermediate Maintenance
382	AVLB	Armoured Vehicle Launched Body
383	AVM	Air Vice-Marshal, Arteriovenous malformation
384	AVO	Apprehended Violence Order
385	AVP	Arubaanse Volkspartij
386	AVP	Association of Volleyball Professionals
387	AVRE	Armoured Vehicle Royal Engineers
388	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
389	AVUM	Aviation Unit Maintenance
390	AVVO	Acute Vaginal Venereal Outbreak
391	AW	Aruba (ISO 3166 digram)
392	aW	Attowatt
393	AWA	American Wrestling Association
394	AWC	Air Warfare Centre
395	AWD	All Wheel Drive
396	AWE	Advanced Warfighting Experiment
397	AWP	Awaiting Parts (SM&R code)
398	AWSIM	Air Warfare SIMulation
399	AWST	Australian Western Standard Time
400	AWW	Above Water Warfare
401	AX	Åland Islands (ISO 3166 digram)
402	AXP	Ambulance eXchange Point
403	AY	Antarctica (FIPS 10-4 territory code)
404	AYBABTU	All Your Base Are Belong To Us
405	AYU	As Yet Unknown
406	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
407	AZE	Azerbaijan (ISO 3166 trigram)
408	AZUR	Actions en zone urbaine (French for: Urban Operations)
409	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]
410	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
411	BBB	Better Business Bureau,Blood-brain barrier
412	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
413	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
414	BBN	Bolt,Beranek and Newman
415	BBQ	Barbecue
416	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)
417	BBYO	B'nai B'rith Youth Organization
418	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
419	BCA	Bachelor of Computer Application,Black Coaches & Administrators
420	BCC	Blind Carbon Copy
421	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
422	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
423	BEL	Belgium (ISO 3166 trigram)
424	BEN	Benin (ISO 3166 trigram)
425	BEO	Banquet Event Order
426	BERC	Business Environmental Resource Center
427	BER	Bit Error Rate
428	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
429	BHR	Bahrain (ISO 3166 trigram)
430	BNF	Backus-Naur Form (computing), British National Formulary
431	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
432	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
433	BNS	Bank of Nova Scotia
434	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
435	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
436	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
437	BoAML	Bank of America Merrill Lynch
438	BOC	British Orthodontic Society, British Oxygen Company
439	BÖC	Blue Öyster Cult
440	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
441	BOFH	Bastard Operator From Hell
442	BOGA	Bend Over and Grab Ankles
443	BOGOF	Buy One,Get One Free
444	BOGs	Bunch of Guys
445	BOI	Balance Of Investment,Basis Of Issue
446	BOL	Bolivia (ISO 3166 trigram)
447	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
448	BOPD	Barrel of Oil Per Day
449	BOS	Battlefield Operating System
450	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
451	BP	Battle Position,British Petroleum (today,BP does not officially stand for anything),Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
452	BPV	Battlefield Planning Visualization,Bovine papillomavirus
453	BQ	British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire,Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code)
454	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
455	BRA	Brazil (ISO 3166 trigram)
456	BRAG	Bicycle Ride Across Georgia
457	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
458	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
459	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
460	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
461	BSoD	Blue Screen of Death (distinct from BSD)
462	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
463	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
464	BSW	British Standard Whitworth (screw thread)
465	BSX	Bendigo Stock Exchange
466	BTO	Built To Order
467	BTP	British Transport Police
468	BTU	British Thermal Unit
469	BTW	By The Way
470	BUAV	British Union for the Abolition of Vivisection
471	BUNO	Bureau Number (aircraft serial number)
472	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
473	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
474	BVD	Bradley,Voorhees & Day (underwear manufacturer)
475	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
476	BW	Bring Wedges (ISO digram)
477	BW	Botswana (ISO 3166 digram)
478	BWA	Botswana (ISO 3166 trigram)
479	BWARS	Bees,Wasps & Ants Recording Society
480	BWC	Biological and Toxin Weapons Convention
481	BWR	Boiling-Water Reactor
482	BX	Base eXchange
483	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
484	BYOC	Bring Your Own Computer (play on BYOB)
485	BYOF	Bring Your Own Flask
486	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
487	BYU	Brigham Young University
488	BZ	Belize (ISO 3166 digram)
489	BZP	Benzylpiperazine
490	C	Carbon, Coulomb, One Hundred (in Roman numerals)
491	c	Centi
492	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
493	c2c	the British rail company formerly known as LTS Rail
494	Ca	Calcium
495	CA	California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
496	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
497	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
498	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
499	CACM	Central American Common Market
500	CACM	Communications of the ACM
501	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
502	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
503	CADPAT	CAnadian Disruptive PATtern
504	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
505	CAEn	Close Action Engagement (constructive simulation)
506	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
507	CAFAD	Combined Arms For Air Defence
508	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
509	CAFE	Corporate Average Fuel Economy standard
510	CAI	Computer Assisted Instruction
511	CAIR	Council on American-Islamic Relations
512	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
513	CALL	Center for Army Lessons Learned
514	CALM	Communications,Air-interface,Long and Medium range
515	CalPERS	California Public Employees' Retirement System
516	Caltrans	California Department of Transpotation
517	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
518	CAMRA	CAMpaign for Real Ale
519	CAN	Canada (ISO 3166 trigram)
520	CANDU	CANada Deuterium Uranium (nuclear reactor design)
521	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
522	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
523	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)
524	CARMONETTE	Computerized Monte Carlo Simulation
525	CARP	Computed Air Release Point
526	CART	Championship Auto Racing Teams (now defunct)
527	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
528	CASA	Civil Aviation Safety Authority
529	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
530	CASS	Command Activated Sonobuoy System
531	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
532	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
533	CAT	Community Acceptance Testing
534	CATK	Counterattack
535	CATS	Computer Active Technology Suspension
536	CATT	Combined Arms Tactical Trainer
537	CAV	Cavalry
538	CAW	Canadian Auto Workers (trade union)
539	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
540	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
541	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
542	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
543	CBLA	Comparative bullet lead analysis
544	CBM	Canadian Baptist Ministries
545	CBM	Commodore Business Machines
546	CBML	Coalition Battle Management Language
547	CBN	CardsApp Brand Number
548	CBOL	Consortium for the Barcode of Life
549	CBOT	Chicago Board of Trade
550	CBR	Case-Based Reasoning
551	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
552	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
553	CBS	Columbia Broadcasting System,Corps Battle Simulation
554	CBUS	Columbus,Ohio
555	CC	carbon copy
556	CCA	Counter Command Activity
557	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
558	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
559	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
560	CCF	Cartoon Cartoon Fridays
561	CCG	Canadian Coast Guard,Collectible Card Game
562	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
563	CCGH	Canadian Coast Guard Hovercraft
564	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
565	CCH	Computer-Controlled Hostile
566	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)
567	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
568	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
569	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
570	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)
571	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
572	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
573	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
574	CCOP	Coalition Common Operating/Operational Picture
575	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
576	CCPA	Consumer Credit Protection Act
577	CCR	Creedence Clearwater Revival
578	CCRAp	Canadian Conservative Reform Alliance party
579	CCRP	Command and Control Research Program
580	CCRTS	Command and Control Research and Technology Symposium
581	CCSCS	Consultative Committee for Space Data Systems
582	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
583	CCSK	Cyclic Code Shift Keying
584	CCT	Current Commitments Team
585	Cd	Cadmium
586	cd	Candela
587	CD	Compact Disc
588	CD1	Cluster of Differentiation 1 (a small gene family)
589	CDA	UK Centre for Defence Analysis
590	CDD	Capabilities Development Document
591	CDE	Chemical Defence Equipment
592	CDipAF	Certified Diploma in Accounting and Finance
593	CDL	Commercial driver's license
594	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
595	CDMA	Code Division Multiple Access
596	CDMSII	Cryogenic Dark Matter Search II
597	Cdr	Commander
598	CDT	Central Daylight Time (UTC−5 hours)
599	Cdt	Commandant
600	Ce	Cerium
601	CE	Christian/Common Era
602	CEA	Campaign Effectiveness Analysis
603	CECOM	U.S. Army Communications and Electronics Command
604	CEI	Competitive Enterprise Institute
605	CENTCOM	United States Central Command
606	CENTO	Central Treaty Organization (Baghdad Pact)
607	CEO	Chief Executive Officer
608	CEP	Circular Error Probable
609	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
610	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
611	CERT	Computer Emergency Response Team
612	CESS	Centre for Earth Science Studies (India)
613	CEST	Central European Summer Time
614	CET	Central European Time
615	CEWC	Council for Education in World Citizenship
616	Cf	Californium
617	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
618	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
619	CFAR	Christine's,Federal Acquisition Regulation
620	CFC	ChloroFluoroCarbon,Canadian Fish Company
621	CFES	Continuous Flow Electrophoresis System
622	CFFZ	Call For Fire Zone
623	CFG	Context-free grammar,Control flow graph
624	CFHT	Canada-France-Hawaii Telescope
625	CFI	Center for Inquiry (CSICOP)
626	CFL	Canadian Football League,Co-ordinated Fire Line
627	CFLCC	Coalition Forces Land Component Command
628	CFM	Certified Facilities Manager
629	CFO	Chief Financial Officer
630	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
631	CFRP	Carbon fibre reinforced plastic
632	CFS	Chronic Fatigue Syndrome
633	CFSP	Common Foreign and Security Policy
634	CFU	Colony Forming Unit in Microbiology
635	CFV	Cavalry Fighting Vehicle
636	CFZ	Critical Friendly Zone
637	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
638	CGH	Comparative Genomic Hybridisation
639	CGIG	Cross-Government Implementation Group
640	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
641	CGS	Chief of the General Staff
642	CGT	Capital Gains Tax
643	ch	ch(L) is used to denote the Chern character of a line bundle
644	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
645	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
646	CHAOS	Cambridge Heart Anti-Oxidant Study
647	CHAPS	Clearing House Automated Payment System
648	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
649	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
650	CHI	Columbia Helicopters,Inc
651	CHiP	California Highway Patrol
652	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
653	CHL	Chile (ISO 3166 trigram)
654	CHLA	Core Historical Literature of Agriculture
655	CHN	China (ISO 3166 trigram)
656	CHOGM	Commonwealth Heads of Government Meeting
657	CHPSO	California Hospital Patient Safety Organization
658	CHRS	Canadian Heart Rhythm Society
659	CHT	Certified Hand Therapist
660	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
661	Ci	Curie
662	CIA	Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
663	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
664	CIB	Complete In Box (Internet auction/trading listings)
665	CIBC	Canadian Imperial Bank of Commerce
666	CID	Certified Interior Designer
667	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
668	CINC	Commander in Chief
669	CINEOS	Campo Imperatore Near-Earth Object Survey
670	CIPE	(European) Centre for International Political Economy
671	CIR	(Commander's) Critical Information Requirements
672	CIR	Corotating Interaction Region
673	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
674	CISA	(U.S.) C4I Integration Support Activity
675	CISB	Complete In Sealed Box (Internet auction/trading listings)
676	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
677	CISSP	Certified Information Systems Security Professional
678	CIV	Côte d'Ivoire (ISO 3166 trigram)
679	CIVPOP	Civilian Population
680	CIWS	Close-In Weapon System
681	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
682	CJC	Canadian Jewish Congress,Cold Junction Compensation
683	CJCS	Chairman of the Joint Chiefs of Staff
684	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
685	CJO	Chief of Joint Operations
686	CJTF	Combined Joint Task Force
687	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
688	CKA	commonly known as, Canada Kicks Ass
689	CKND	Codename: Kids Next Door
690	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
691	Cl	Chlorine
692	CLA	Clutterers Anonymous
693	CLEC	Competitive Local Exchange Carrier
694	CLEMARS	California Law Enforcement Mutual Aid Radio System
695	CLIC	Compact LInear Collider
696	CLO	Cornell Lab of Ornithology
697	CLOS	Command to Line-Of-Sight (missile control system)
698	CLPFC	CentroLateral PreFrontal Cortex
699	CLRP	College Loan Repayment Program
700	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
701	Cm	Curium
702	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
703	CMHC	Canada Mortgage and Housing Corporation
704	CMIIAW	Correct me if I am wrong
705	CMIS	Common management information service
706	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
707	CMM	Capability Maturity Model
708	CMMC	Corps Materiel Management Centre
709	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
710	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
711	CMP	Common [Operating/Operational] Maritime Picture
712	CMPD	Charlotte Mecklenburg Police Department
713	CMPD	Chronic Myeloproliferative Disease
714	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
715	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
716	CMT	Country Music Television
717	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
718	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)
719	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
720	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
721	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
722	CNBC	Consumer News and Business Channel
723	CND	Campaign for Nuclear Disarmament,Computer Network Defence
724	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
725	CNF	Cost and Freight
726	CNI	Clinical Nursing Intern
727	CNI	Communications,Navigation and Identification
728	CNN	Cable News Network,Cellular Nonlinear Network
729	CNV	Copy-Number Variable (genetics)
730	Co	Cobalt
731	COB	Close Of Business [day]
732	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
733	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
734	CoDA	Co-Dependents Anonymous
735	COGENT	Cognitive Objects within a Graphical EnviroNmenT
736	COIL	Chemical Oxygen Iodine Laser
737	COK	Cook Islands (ISO 3166 trigram)
738	COL	Colombia (ISO 3166 trigram)
739	COLA	Cost Of Living Adjustment
740	CONAD	U.S. Continental Air Defense Command
741	CONUS	Continental United States
742	COO	Chief Operating Officer
743	COPE	U.K. Committee On Publication Ethics
744	COPUS	U.K. Committee on the Public Understanding of Science
745	CORD	Common Operational Requirements Document
746	CORE	Consortium for Oceanographic Research and Education
747	COS	Cooper Ornithological Society
748	COSER	COoperative SERvice
749	CoT	Car of Tomorrow (former NASCAR race car design)
750	COTS	Commercial Off The Shelf
751	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
752	CPA	Certified Public Accountant
753	CPCU	Certified Property Casualty Underwriter
754	CPD	Capabilities Production Document
755	CPE	Certificate of Proficiency in English
756	CPE	Certified Professional Ergonomist
757	CPF	Calibration Parameter File,Canadian Patrol Frigate
758	CPG	Clinical Practice Guideline
759	CPIM	Certification on Production and Inventory Management
760	CPIR	Computationally-Private Information Retrieval
761	CPON	Certified Pediatric Oncology Nurse
762	CPPCC	Chinese People's Political Consultative Conference
763	CPR	Canadian Pacific Railway
764	CPR	Cardiopulmonary resuscitation
765	CPSM	Continuous Phase Shift Modulation
766	CPSU	Communist Party of the Soviet Union
767	CPT	Contingency Planning Team
768	CPU	Contract Postal Unit
769	CPV	Cape Verde (ISO 3166 trigram)
770	CPX	Command Post eXercise
771	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
772	Cr	Chromium
773	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
774	CRAM	Combined Radiometric Correction Model
775	CRD	Capstone Requirements Document
776	CREB	Cyclic AMP-response Element Binding (protein)
777	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
778	CREN	Christian Real Estate Network Real Estate Association
779	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
780	CRIPL	Consolidated Remain-In-Place List
781	CRM	Cardiac Rhythm Management,Customer Relationship Management
782	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
783	CRP	Committee for the Re-Election of the President,Control and Reporting Post
784	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
785	CRTC	Canadian Radio-television and Telecommunications Commission
786	Cs	Caesium
787	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
788	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
789	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
790	CSG	Corps Support Group
791	CSI	see entry
792	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
793	CSIP	Commercial Stable Image Platform (AMD)
794	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
795	CSL	U.K. Central Science Laboratory
796	CSPI	Center for Science in the Public Interest
797	CSR	Control Supply Rate
798	CSR	Corporate Social Responsibility
799	CSRC	Conflict Studies Research Centre
800	CSRF	Cross-Site Request Forgery
801	CST	Central Standard Time (UTC−6 hours)
802	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)
803	CTBT	Comprehensive [Nuclear] Test Ban Treaty
804	CTDB	Compact Terrain Data Base (file format)
805	CTGF	connective tissue growth factor
806	CTI	Co-operative Target Identification
807	CTIL	Critical Tracked Items List
808	CTIS	Central Tire Inflation System
809	CTMS	Clinical Trial Management System
810	CTSS	Compatible Time-Sharing System
811	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
812	CTVT	Canine Transmissible Venereal Tumour
813	Cu	Copper (Latin Cuprum)
814	CUB	Cuba (ISO 3166 trigram)
815	CUCV	Commercial Utility Cargo Vehicle
816	CUPS	Common Unix Printing System
817	CUPW	Canadian Union of Postal Workers
818	CUREA	Consortium for Undergraduate Research and Education in Astronomy
819	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
820	CUW	Curaçao (ISO 3166 trigram)
821	CV	curriculum vitae (résumé)
822	CVLL	Crypto Variable Logic Label
823	CVSD	Continuous Variable Slope Delta (modulation)
824	CVT	Continuously Variable Transmission
825	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
826	CWC	Chemical Weapons Convention
827	CWRU	Case Western Reserve University
828	CWS	Canadian Wildlife Service
829	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
830	CXR	Christmas Island (ISO 3166 trigram)
831	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
832	CYM	Cayman Islands (ISO 3166 trigram)
833	CZE	Czech Republic (ISO 3166 trigram)
834	CZF	(Christian Zombie Fan)
835	CZMA	(US) Coastal Zone Management Act
836	d	Deci
837	D	Deuterium
838	DAFIF	Digital Aeronautical Flight Information File
839	DAK	Disney's Animal Kingdom
840	DAO	Division Ammunition Officer
841	DARE	Drug Abuse Resistance Education
842	DARO	(U.S.) Defense Airborne Reconnaissance Office
843	DARPA	U.S. Defense Advanced Research Projects Agency
844	DAS	Defensive Aids Suite
845	DASD	(U.S.) Deputy Assistant Secretary of Defense
846	DASL	Datapoint's Advanced Systems Language
847	DAU	(U.S.) Defense Acquisition University
848	DAWN	(U.S.) Drug Abuse Warning Network
849	dB	Decibel
850	DB	Deutsche Bahn
851	Db	Dubnium
852	DBA	De Bellis Antiquitatis (miniature wargaming rules)
853	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
854	DBDO	Desert BDO
855	DBE	Dame Commander of the Order of the British Empire
856	DBF	Detection By Fire (weapon launch signature)
857	DBR	De Bellis Renationis (miniature wargaming rules)
858	DBRA	Davis-Bacon Related Acts
859	DBS	Direct Broadcast Services (television)
860	DCAA	(U.S.) Defense Contract Audit Agency
861	DCAS	Devon and Cornwall Archery Society
862	DCC	Dallas Christian College
863	DCD	[Organ] Donation after Cardiac Death
864	DCE	Data Communication Equipment
865	DCFC	Death Cab for Cutie
866	DCL	Disney Cruise Line
867	DCN	Deacon
868	DCOM	Disney Channel Original Movie
869	DCSOPS	Deputy Chief of Staff for Operations and plans
870	DCW	Digital Chart of the World
871	DCYSC	Discovery Channel Young Scientist Challenge
872	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
873	DDA	Deputy District Attorney
874	DDN	U.S. Defense Data Network
875	DDS	Doctor of Dental Surgery
876	DEA	Drug Enforcement Administration
877	DEA	Drug Enforcement Agency
878	DeCA	(U.S.) Defense Commissary Agency
879	DEFCON	Defence readiness condition
880	DELT	Dual Ended Line Test (ing)
881	DEPSECDEF	(U.S.) Deputy Secretary of Defense
882	DERA	British Defence Evaluation and Research Agency (1995-2001)
883	DES	Deep Ecliptic Survey
884	DEU	Germany (ISO 3166 trigram)
885	DFAS	(U.S.) Defense Finance and Accounting Service
886	DFCB	Data Format Control Book
887	DfID	UK Department for International Development
888	DFM	Discrete Field Model see Superluminal motion
889	DFM	Dynamic Flowgraph Methodology
890	DFSP	Dermatofibrosarcoma protuberans
891	DfT	UK Department for Transport
892	DGPS	Differential GPS
893	DGZ	Desired Ground Zero
894	DHA	DocosaHexaenoic Acid
895	DHHS	(U.S.) Department of Health and Human Services
896	DHRA	(U.S.) DoD Human Resources Activity
897	DHS	U.S. Department of Homeland Security
898	DHSS	UK Department of Health and Social Security
899	DHTFYSS	U.S. Don't Have Time For You Silly S****
900	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
901	DIA	U.S. Defense Intelligence Agency
902	DIAC	Department of Immigration and Citizenship (Australia) [1]
903	DiC	Design Island Centre (computing usually used in a teaching situation)
904	DICASS	DIrectional Command Activated Sonobuoy System
905	DIFAR	DIrectional Frequency Analysis and Recording
906	DIME	Dense Inert Metal Explosive
907	DIP	Dual In-line Package (electronics)
908	DIPS	Defense independent pitching statistics
909	DIR	Defence Industrial Research
910	DISCOM	Division Support Command
911	DISE	Deployable Intelligence Support Element
912	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
913	DITY	Do-It-Yourself
914	DIVAD	Division Air Defence
915	DIY	Do It Yourself
916	DJI	Djibouti (ISO 3166 trigram)
917	DK	Denmark (ISO 3166 digram)
918	DL	Dexter's Laboratory
919	DLIC	Detachment Left-In-Contact
920	DLIR	Depot-Level Inspection and Repair
921	DLPMC	DorsoLateral PreMotor Cortex
922	DLRP	Data Link Reference Point
923	DLS	Deep Lens Survey
924	DLSA	(U.S.) Defense Legal Services Agency
925	DLSc	Diploma in Library Science
926	DLTBGYD	Don't let the bastards grind you down
927	DMC	(U.S.) Defense Management Council
928	DMCA	Digital Millennium Copyright Act
929	DMM	Digital Multimeter
930	DMOC	Distributed Mission Operations Centre
931	DMPA	(U.S.) Defense Medical Programs Activity
932	DMPFC	DorsoMedial PreFrontal Cortex
933	DMPK	Drug Metabolism and Pharmacokinetics
934	DMRB	Design Manual for Roads and Bridges
935	DMS	U.S. Defense Message System
936	DMSP	U.S. Defense Meteorological Satellite Program
937	DMT	Dimethyltryptamine
938	DMV	Department of Motor Vehicles
939	DMZ	DeMilitarized Zone
940	DN	Deacon
941	DNAW	Day Night All Weather
942	DNDi	Drugs for Neglected Diseases initiative
943	DNDO	U.S. Domestic Nuclear Detection Office
944	DNK	Denmark (ISO 3166 trigram)
945	DNM	Defence Nuclear Material
946	DNR	Do Not Resuscitate
947	DNS	Domain Name System
948	DOB	Date Of Birth
949	DOD	U.S. Department of Defense
950	DODAF	U.S. Department of Defense Architectural Framework
951	DoDD	U.S. Department of Defense Directive
952	DoDEA	(U.S.) Department of Defense Education Activity
953	DOE	U.S. Department of Energy
954	DOHC	Dual-OverHead-Cam engine
955	DOI	U.S. Department of the Interior
956	DORA	Defence of the Realm Act
957	DOS	Density of State
958	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
959	DotD	Deal of the Day (marketing gimmick)
960	DOW	Died of Wounds
961	DP	Division de production (Algerian petroleum company)
962	DPA	UK Defence Procurement Agency
963	DPCO	Double-Pole Change Over
964	DPDT	Double-Pole Double-Throw
965	DPI	Dots Per Inch
966	DPICM	Dual-Purpose Improved Conventional Munition
967	DPKO	UN Department for Peacekeeping Operations
968	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
969	DPPDB	Digital Point Positioning Database
970	DPRK	Democratic People's Republic of Korea
971	DPST	Double-Pole Single-Throw
972	DRC	Democratic Republic of the Congo
973	DRDC	Defence Research & Development Canada
974	DREA	Defence Research Establishment Atlantic (obsolete 2002)
975	DRES	Defence Research Establishment Suffield (obsolete 2002)
976	DRET	Defence Research Establishment Toronto (obsolete 2002)
977	DREV	Defence Research Establishment Valcartier (obsolete 2002)
978	DRIC	(U.S.) Defense Research Information Center
979	DRMS	(U.S.) Defense Revitalization and Marketing Service
980	DRPR	Drawing Practices
981	DRT	Document Related Technologies
982	Ds	Darmstadtium
983	DSAS	Disney Sing Along Songs
984	DSB	(U.S.) Defense Science Board
985	DSCS	U.S. Defense Satellite Communications System
986	DSCSOC	DSCS Operations Center
987	DSE	Dry Sheep Equivalent
988	DSG	Direct-Shift Gearbox
989	DSID	Dismounted Soldier Identification System
990	DSL	Digital Subscriber Line
991	DSLR	Digital single-lens reflex (camera)
992	DSM	Diagnostic and Statistical Manual of Mental Disorders
993	DSN	Deep Space Network
994	DSPL	Design Specialists and Plans Language
995	DSR	Deformed Special Relativity
996	DST	Daylight Saving Time
997	DSTL	British Defence Science and Technology Laboratory
998	DSWA	(U.S.) Defense Special Weapons Agency
999	DTA	Dental Technologists Association
1000	DTD	Digital Terrain Data
1001	DTG	Date-Time Group
1002	DTH	Direct To Home (television)
1003	DTI	UK Department of Trade and Industry
1004	DTIC	(U.S.) Defense Technical Information Center
1005	DTL	Diode-Transistor Logic (electronics)
1006	DTMF	Dual-tone multi-frequency signaling
1007	DTO	Disruptive Technology Office (was ARDA)
1008	DTR	Determine The Relationship
1009	DTSA	(U.S.) Defense Technology Security Administration
1010	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1011	DUSD	(U.S.) Deputy Under-Secretary of Defense
1012	DVLC	UK Driver and Vehicle Licencing Centre
1013	DVM	Doctor of Veterinary Medicine
1014	DVO	Direct View Optics
1015	DVOM	Digital Volt-Ohm Meter
1016	DVP	various meanings (disambiguation page)
1017	DW	Drum Workshop
1018	DWIM	Do What I Mean
1019	DWM	Doctor Who Magazine
1020	DWTS	Dancing with the Stars
1021	DWW	Down with Webster
1022	DXA	Dual-energy X-ray Absorptiometry
1023	DXM	DeXtroMethorphan
1024	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1025	Dy	Dysprosium
1026	DZA	Algeria (ISO 3166 trigram)
1027	E	East
1028	EABU	Explain Acronyms Before Use
1029	EAC	Echelons Above Corps
1030	EAPC	Euro-Atlantic Partnership Council
1031	EAST	Experimental Advanced Superconducting Tokamak
1032	EBD	Electronic Brake Distribution
1033	EBE	Extraterrestrial Biological Entity
1034	EBSA	Employee Benefits Security Administration
1035	EBW	Electron Beam Welding
1036	EBW	Exploding BridgeWire
1037	ECASS	European Centre for Analysis in the Social Sciences [1]
1038	ECBR	European Coalition for Biomedical Research
1039	ECCM	Electronic Counter-Counter-Measures
1040	ECFS	Electronic Case Filing System
1041	ECG	Electrocardiogram
1042	ECHR	European Convention on Human Rights
1043	ECJ	European Court of Justice
1044	ECL	Emitter Coupled Logic (electronics)
1045	ECommHR	European Commission on Human Rights
1046	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1047	ECT	ElectroConvulsive Therapy
1048	ECtHR	European Court of Human Rights
1049	EDA	European Defence Agency
1050	EDAC	Error Detection And Correction
1051	EDCS	Environmental Data Coding Specification
1052	EDH	Eastman Dental Hospital
1053	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1054	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1055	EEC	European Economic Community (predecessor of the EU)
1056	EEG	ElectroEncephaloGram
1057	EENT	End Evening Nautical Twilight
1058	EEO	Equal Employment Opportunity
1059	EEOC	(U.S.) Equal Employment Opportunity Commission
1060	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1061	EFF	Electronic Frontier Foundation
1062	EFL	English as a Foreign Language
1063	EFM	Enterprise Feedback Management
1064	EFOA	European Fuel Oxygenates Association
1065	EFSA	European Food Safety Authority
1066	EFT	Electronic Fund Transfer
1067	EFV	Expeditionary Fighting Vehicle
1068	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1069	EGCG	EpiGalloCatechin-3-Gallate
1070	EGIS	Erieye Ground Interface Segment
1071	EGRET	Energetic Gamma-Ray Experiment Telescope
1072	EGY	Egypt (ISO 3166 trigram)
1073	EHF	Extremely High Frequency
1074	EHR	Equipment History Record
1075	Ei	Exbi
1076	EI	Ireland (FIPS 10-4 country code; from Éire)
1077	EIA	Environmental Impact Assessment
1078	EIAH	Encyclopedia of Iranian Architectural History
1079	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1080	EIC	East India Company
1081	EICS	East India Company's Service
1082	eID	electronic ID
1083	EIRP	Effective Isotropic Radiated Power
1084	EIS	Environmental Impact Statement
1085	EJ	Exajoule
1086	EKG	Electrocardiogram (from German Elektrokardiogramm)
1087	EKMS	Electronic Key Management System
1088	EL	Exalitre
1089	ELINT	Electronic Intelligence
1090	ELL	English Language Learner
1091	ELM	Edge-Localised Mode (plasma physics)
1092	ELO	Electric Light Orchestra
1093	ELSS	Emergency Life Support Stores
1094	EM	ElectroMagnetism/ElectroMagnetic
1095	Em	Exametre
1096	EMA	European Medicines Agency
1097	EMCON	(Electromagnetic) Emissions Control
1098	EMDG	Euro-Missile Dynamics Group
1099	EMDR	Eye Movement Desensitisation and Reprocessing
1100	EMEA	Europe,Middle East and Africa
1101	EMG	ElectroMyoGraph
1102	EMP	ElectroMagnetic Pulse
1103	EMS	Emergency Medical Services
1104	EMT	Emergency Medical Technician
1105	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1106	ENE	East North-East
1107	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1108	ENTEC	Euro NATO Training Engineer Centre
1109	ENVL	Envelope
1110	ENY	Enemy
1111	EOD	Explosive Ordnance Disposal
1112	EOG	ElectroOculoGraphy
1113	EOM	End of Message
1114	EOSAT	Earth Observation Satellite
1115	EOSDIS	Earth Observation Satellite Data and Information System
1116	EP	European Parliament
1117	EP	Extended play
1118	EPCOT	Experimental Prototype Community Of Tomorrow
1119	EPGS	EOS Polar Ground Sites
1120	EPIRB	Emergency Position Indicating Radio Beacon
1121	EPL	English Premier League
1122	EPOS	Electronic Point Of Sale
1123	EPPA	Employee Polygraph Protection Act
1124	EPR	European Pressurised [Nuclear] Reactor
1125	EQ	Emotional Quotient
1126	Er	Erbium
1127	ERCIM	European Research Consortium for Informatics and Mathematics
1128	ERI	Eritrea (ISO 3166 trigram)
1129	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1130	EROS	Earth Resources Observation System
1131	ERP	Engineer Regulating Point
1132	ERR	Eesti Rahvusringhääling
1133	ERS	Earth Resources Survey
1134	ERTS	Earth Resources Technology Satellite (became Landsat)
1135	ERV	Endogenous RetroVirus
1136	ESD	ElectroStatic Discharge
1137	ESDP	European Security and Defence Policy
1138	ESE	East South-East
1139	ESH	Western Sahara (ISO 3166 trigram)
1140	ESL	English as a Second Language
1141	ESM	Electronic warfare Support Measures
1142	ESO	European Southern Observatory
1143	ESOL	English for Speakers of Other Languages
1144	ESPN	Entertainment and Sports Programming Network
1145	ESU	Emergency Services Unit
1146	ESV	Engineer Support Vehicle
1147	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1148	ETH	Ethiopia (ISO 3166 trigram)
1149	ETI	Extra-Terrestrial Intelligence
1150	ETLA	Extended TLA
1151	ETT	Embedded Training Team
1152	Eu	Europium
1153	EUCOM	(U.S.) European Command
1154	EUUSA	European Union and United States of America
1155	EV	Exavolt
1156	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1157	EWTN	Eternal Word Television Network
1158	Exatesla	Extra Terrestrial
1159	EXREP	Expeditious Repair (SM&R code)
1160	f	Femto
1161	fA	Femtoampere
1162	FA	Food Addicts in Recovery Anonymous
1163	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1164	FAAD	Forward Area Air Defence
1165	FAADEZ	Forward Area Air Defence Engagement Zone
1166	FAAFP	Fellow of the American Academy of Family Physicians
1167	FAAN	Fellow of the American Academy of Neurology
1168	FAAN	Fellow of the American Academy of Nursing
1169	FAAQ	Frequently Asked and Anticipated Questions
1170	FAASV	Field Artillery Ammunition Supply Vehicle
1171	FAB	Feline Advisory Bureau (UK feline charity)
1172	FACA	(US) Federal Advisory Committee Act
1173	FACH	Fuerza Aérea de Chile
1174	FACN	Fellow of the American College of Nutrition
1175	FACP	Fellow of the American College of Physicians
1176	FACTS	Flexible Alternating Current Transmission System
1177	FAM	Foreign Affairs Manual
1178	FAO	Food and Agriculture Organization
1179	FAPA	Fellow of the American Psychological Association
1180	FAPHA	Fellow of the American Public Health Association
1181	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1182	FASCAM	Family of Scatterable Mines[1]
1183	FASD	Fetal Alcohol Spectrum Disorder
1184	FASEB	Federation of American Societies for Experimental Biology
1185	FAT	Field Artillery Tractor
1186	FAVS	Future Armoured Vehicle System
1187	FAW	Football Association of Wales
1188	FBCS	Fellow of the British Computer Society
1189	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1190	FBIS	Foreign Broadcast Information Service
1191	FBM	Board foot
1192	fC	Femtocoulomb
1193	FCC	U.S. Federal Communications Commission
1194	FCE	First Certificate in English
1195	FCF	Financial Free Cash Flow
1196	FCLA	Fraud Claims Law Associate
1197	FCO	UK Foreign and Commonwealth Office
1198	FCW	Florida Championship Wrestling
1199	FD	Falun Dafa
1200	FDA	Food and Drug Administration (U.S.)
1201	FDBK	(I) Feedback
1202	Fe	Iron (Latin Ferrum)
1203	FEAST	Forum for European-Australian Science and Technology Cooperation
1204	FEATS	Festival of European Anglophone Theatrical Societies link title
1205	FEBA	Forward Edge of the Battle Area
1206	FED	Field Emission Display
1207	FEDEP	Federation Development Process (Simulation)
1208	FEF	Frontal Eye Field (neurophysiology)
1209	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1210	FENS	Federation of European Neuroscience Societies
1211	FES	Flywheel Energy Storage
1212	FEST	Frankfurt English Speaking Theatre link title
1213	FET	Field-effect transistor
1214	FEZ	Fighter Engagement Zone
1215	fF	Femtofarad
1216	FF	Final Fantasy
1217	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1218	FFC	Free For Chat
1219	FFE	Fukuoka Futures Exchange
1220	FFF	Fédération française de football (French for: French Football Federation)
1221	FFG	Guided Missile Frigate (hull classification symbol)
1222	FFOV	Forward Field Of View
1223	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1224	FFS	For Fuck's Sake
1225	FFT	Final Fantasy Tactics
1226	FG	Falun Gong
1227	fg	Femtogram
1228	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1229	FGOTUS	First Gentleman of the United States
1230	FGR	Flickr Group Roulette
1231	fH	Femtohenry
1232	FHFIF	Foster's Home for Imaginary Friends
1233	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1234	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1235	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1236	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1237	FIBUA	Fighting In Built-Up Areas
1238	FIC	Fellowship for Intentional Community
1239	FID	Foreign Internal Defence
1240	FIE	Fly-In Echelon
1241	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1242	FIFe	Fédération internationale féline (French for: International Feline Federation)
1243	FIFO	First In, First Out
1244	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1245	FIGJAM	Fuck I'm Good, Just Ask Me
1246	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1247	FIN	Finland (ISO 3166 trigram)
1248	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1249	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1250	FIS	Fédération internationale de ski (French for: International Ski Federation)
1251	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1252	FISH	Fluorescence In-Situ Hybridisation
1253	FiST	Fire Support Team
1254	FITS	Flexible Image Transport System
1255	FIU	Florida International University
1256	fJ	Femtojoule
1257	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1258	FJI	Fiji (ISO 3166 trigram)
1259	FJN	Financial Job Network
1260	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1261	fK	Femtokelvin
1262	FKSM	Fort Knox Supplemental Manual
1263	FKT	Fastest Known Time
1264	fL	Femtolitre
1265	FL	Florida (postal symbol)
1266	fl	floruit (Latin for: living) (genealogy)
1267	FLA	Florida,Front Line Assembly,Future Large Aircraft
1268	FLAB	Four-letter abbreviation
1269	FLAC	Free Legal Advice Centres
1270	FLAC	Free Lossless Audio Codec
1271	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1272	FLB	Forward Logistics Base
1273	FLET	Forward Line of Enemy Troops
1274	FLG	Falun Gong
1275	FLIP	Flight Information Publication
1276	FLIR	Forward Looking InfraRed (sensor)
1277	FLK	Falkland Islands (ISO 3166 trigram)
1278	FLOT	Forward Line of Own Troops
1279	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1280	FLQ	Free Legal Questions
1281	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1282	FLSA	Fair Labor Standards Act
1283	FLTSAT	Fleet Satellite
1284	FLTSATCOM	Fleet Satellite Communication System
1285	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1286	FM	Factory Mutual
1287	FM	Federal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code),Field Manual,Flight Manager,Frequency Modulation (electronics)
1288	fm	Femtometre
1289	Fm	Fermium
1290	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1291	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1292	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1293	FMCG	Fast Moving Consumer Goods
1294	FME	Formal Methods Europe
1295	FMECA	Failure Modes and Effect Criticality Analysis
1296	FMJD	Fédération Mondiale du Jeu de Dames
1297	FMLA	Family Medical Leave Act
1298	FoE	Friends of the Earth
1299	FOGC	Federal Oil and Gas Council
1300	FOH	Front Of House
1301	FOIA	Freedom of Information Act
1302	FOM	Federation Object Model
1303	FONSI	Finding of No Significant Impact
1304	FOO	Forward Observation Officer
1305	FOOP	Friends Of Organ Pipes (Volunteer group)
1306	FoS	Family of Systems
1307	FOSE	Fallout 3 Script Extender
1308	FOSE	Federal Office Systems Expo
1309	FOT	Free on truck
1310	FOTA	Fellow of the Orthodontic Technicians Association
1311	FOTC	Flight of the Conchords
1312	FOUO	For Official Use Only
1313	FP	French Polynesia (FIPS 10-4 territory code)
1314	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1315	FPS	Fire Prevention System
1316	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1317	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1318	Fr	Francium
1319	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1320	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1321	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1322	FRICBM	Full Range ICBM
1323	FRO	Faroe Islands (ISO 3166 trigram)
1324	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1325	FRSA	Fellow of the Royal Society of Art
1326	FRY	Federal Republic of Yugoslavia
1327	fs	Femtosecond
1328	fS	Femtosiemens
1329	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1330	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1331	FSCL	Fire Support Co-ordination Line
1332	FSE	Fire Support Element
1333	FSF	Free Software Foundation
1334	FSH	Follicle Stimulating Hormone
1335	FSI	Fuel Stratified Injection
1336	FSS	Fire Support Station
1337	FSSP	Families of Structurally Similar Proteins
1338	FSTC	Foreign Science Technology Center (now NGIC)
1339	fT	Femtotesla
1340	FTC	Federal Trade Commission
1341	FTE	Full Time Equivalent
1342	FTL	Faster Than Light
1343	FTS	Flight Termination System used during some rocket launches
1344	FTS	Fuck That Shit
1345	FU	Smoke (METAR Code)
1346	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1347	fV	Femtovolt
1348	fW	Femtowatt
1349	FW	Forward
1350	FWC	Football World Cup
1351	FWF	Fixed Word Format
1352	FWI	French West Indies
1353	FWIW	For What It's Worth
1354	FWS	U.S. Fish and Wildlife Service
1355	FWT	Fresh Water Tank
1356	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1357	FYA	For Your Agenda
1358	FYDP	Five-Year Defense Plan (U.S.)
1359	FYI	For Your Information
1360	FYROM	Former Yugoslav Republic of Macedonia
1361	FZDZ	Freezing Drizzle (METAR Code)
1362	FZFG	Freezing Fog (METAR Code)
1363	FZRA	Freezing Rain (METAR Code)
1364	g	Gram
1365	G3	Heckler & Koch G3
1366	GAAR	General Anti-Avoidance Rule (tax evasion)
1367	GAB	Gabon (ISO 3166 trigram)
1368	GABA	Gamma-AminoButyric Acid
1369	GAD	Generalized Anxiety Disorder
1370	GAF	Garfield and Friends
1371	GAO	U.S. Government Accountability Office
1372	GAW	Global Atmospheric Watch
1373	GBBC	Great (Global) Backyard Bird Count
1374	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1375	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1376	GCA	Graduate in Claims Administration
1377	GCD	see entry
1378	GCF	Greatest Common Factor
1379	GCI	Ground-controlled interception
1380	GCN	Gamma-ray burst Coordination Network
1381	GCS	Global Coordinate System
1382	GCSE	General Certificate of Secondary Education (UK)
1383	Gd	Gadolinium
1384	GD	Grenada (ISO 3166 digram)
1385	GDL	Game Definition Language
1386	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1387	GDR	German Democratic Republic (cf. DDR)
1388	GDW	Game Designers Workshop
1389	Ge	Germanium
1390	GEBCO	General Bathymetric Chart of the Oceans
1391	GEC	Great Engineering Challenge
1392	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1393	GEEP	Geophysical Equipment Exploration Platform
1394	GEN	Full General (four stars) in the U.S. Army
1395	GeV	Gigaelectron-volt
1396	GEV	Ground Effect Vehicle
1397	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1398	GFI	Ground Fault Interruptor (aka GFCI)
1399	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1400	GFN	Global Footprint Network
1401	GG	Georgia (FIPS 10-4 country code)
1402	GGK	Good God Karma
1403	GHA	Ghana (ISO 3166 trigram)
1404	GHB	gamma-Hydroxybutyric acid
1405	Gi	Gibi
1406	GIB	Gibraltar (ISO 3166 trigram)
1407	GIG	Global Information Grid
1408	GINO	Godzilla In Name Only
1409	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1410	GJD	Geocentric Julian Day
1411	GLAAD	Gay and Lesbian Alliance Against Defamation
1412	GLAC	General Ledger Accounting Code
1413	GLAST	Gamma-ray Large Area Space Telescope
1414	GLBA	Gramm-Leach-Bliley Act
1415	GLC	Gas-liquid chromatography
1416	GLP	Guadeloupe (ISO 3166 trigram)
1417	GLV	Gained Life Value
1418	Gm	Gigametre
1419	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1420	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
1421	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1422	GMFSC	Ground Mobile Forces Satellite Communications
1423	GMO	Genetically Modified Organism
1424	GMPCS	Global Mobile Personal Communications by Satellite
1425	GNAS	Grand National Archery Society
1426	GNB	Guinea-Bissau (ISO 3166 trigram)
1427	GNP	Gross National Product
1428	GNQ	Equatorial Guinea (ISO 3166 trigram)
1429	GnRH	Gonadotropin-Releasing Hormone
1430	GO	Glorioso Islands (FIPS 10-4 territory code)
1431	GOA	General of the Army (United States only)
1432	GOAT	Greatest Of All Time
1433	GOC	General Officer Commanding
1434	GOES	Geostationary Operational Environmental Satellite
1435	GOP	Grand Old Party
1436	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1437	GOSC	General Officer Steering Committee
1438	GOSH	Great Ormond Street Hospital
1439	GOSP	Gas/Oil Separation Plant
1440	GOTS	Government off-the-shelf
1441	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1442	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1443	GPA	Grade Point Average
1444	GPC	Global Path Cache
1445	GPIB	General-Purpose Instrumentation/Interface Bus
1446	GPO	General Post Office
1447	GPPC	Genetics and Public Policy Center
1448	GPR	Ground-Penetrating Radar
1449	GPS	General Problem Solver,Global Positioning System
1450	GPT	General Purpose Technology, Get paid to surf (an online business model)
1451	GQ	Equatorial Guinea (ISO 3166 digram),Gentlemen's Quarterly (the original name of the magazine now known simply as GQ),Guam (FIPS 10-4 territory code),GR[edit]
1452	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1453	GRAIL	Gravity Recovery and Interior Laboratory
1454	GRAS	Generally recognized as safe (FDA list)
1455	GRB	Gamma-Ray Burst
1456	GRC	Greece (ISO 3166 trigram)
1457	GRD	Grenada (ISO 3166 trigram)
1458	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1459	grep	[search] Globally for Regular Expression,Print [lines]
1460	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1461	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1462	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1463	GRL	Greenland (ISO 3166 trigram)
1464	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1465	Gs	Gigasecond
1466	GSA	U.S. General Services Administration
1467	GSD	Graphical Situation Display
1468	GSGB	(God send glamour boy 9-10/10)
1469	GSK	GlaxoSmithKline [good sexual karma]
1470	GSN	Game Show Network
1471	GSO	General Services Officer (U.S. Department of State)
1472	GSOH	Good Sense Of Humour
1473	GSP	Georges St-Pierre (Canadian MMA fighter)
1474	GSR	Gun Shot Residue
1475	GSS	Generic Security Services
1476	GSW	Gunshot wound
1477	GTD	Getting Things Done
1478	GTG	Got To Go (Internet chat)
1479	GTGN	Getty Thesaurus of Geographic Names
1480	GTK	Good To Know (Internet chat)
1481	GTM	Guatemala (ISO 3166 trigram)
1482	GU	Guam (postal symbol; ISO 3166 digram)
1483	GUF	French Guiana (ISO 3166 trigram)
1484	GUILT	Gangliated Utrophin Immuno Latency Toxin
1485	GULCR	Grupo de Usuarios de Linux de Costa Rica
1486	GUT	Grand Unification Theory
1487	GWARS	Ground Warfare System (simulation)
1488	GWAS	Grand Western Archery Society
1489	GWOT	Global War on Terrorism
1490	GXE	Gene-enivronment interaction
1491	GXM	Matrox Graphics eXpansion Module
1492	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1493	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1494	h	Hecto
1495	HAARP	High Frequency Active Auroral Research Program
1496	HAART	Highly Active Anti-Retroviral Therapy
1497	HAI	Human Awareness Institute
1498	HAL	Hardware Abstraction Layer
1499	HALO	High Altitude Low Opening (parachute jump)
1500	HAM	Amateur radio operator
1501	HANS	Head And Neck Support (device used in many race cars)
1502	HARM	High-speed Anti-Radiation Missile
1503	HAW	Heavy Antitank Weapon
1504	HAWK	Homing All the Way Killer (air defence system)
1505	HAZ	Heat-Affected Zone
1506	HAZMAT	Hazardous Materials
1507	HBCD	HexaBromoCycloDodecane
1508	HBO	Home Box Office
1509	HBR	Harvard Business Review
1510	HBT	Heterojunction Bipolar Transistor
1511	HBV	Hepatitis B Virus
1512	HCCI	Homogeneous Charge Compression Ignition
1513	HCF	Highest Common Factor
1514	HCSC	Higher Command and Staff Course
1515	HDL	High-Density Lipoprotein
1516	HDM	Human Decision-Making
1517	HDRA	Henry Doubleday Research Association
1518	He	Helium
1519	HE	High Explosive
1520	HEAT	High Explosive Anti-Tank (ammunition)
1521	HEBA	Hellenic Basketball Clubs Association
1522	HEER	High-Explosive Extended Range (ammunition)
1523	HEIC	Honourable East India Company
1524	HEMP	High-Altitude Electromagnetic Pulse
1525	HEOSS	High Earth Orbit Space Surveillance
1526	HEP	High-Explosive Plastic (ammunition)
1527	HEPA	High-Efficiency Particulate Air (filter)
1528	HESV	Heavy Engineering Support Vehicle
1529	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1530	HEU	Highly Enriched Uranium
1531	Hf	Hafnium
1532	HF	High Frequency
1533	HFE	Human Fertilisation and Embryology (UK Act)
1534	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1535	HFEA	Human Fertilisation and Embryology Authority (UK)
1536	Hg	Mercury (Latin Hydrargyrum)
1537	HGC	UK Human Genetics Commission
1538	HGF	Human Growth Factor
1539	HGTV	Home & Garden Television
1540	HI	Hawaii (postal symbol)
1541	HIH	His (or Her) Imperial Highness
1542	HIM	His (or Her) Imperial Majesty
1543	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1544	HIMEZ	High Altitude Missile Engagement Zone
1545	HIMYM	How I Met Your Mother
1546	HIPAA	U.S. Health Insurance Portability and Accountability Act
1547	Hipparcos	HIgh Precision Parallax COllecting Satellite
1548	Hird	Hurd of interfaces representing depth (cf. HURD)
1549	HiRISE	High Resolution Imaging Science Experiment
1550	HIT	Health Information Technology
1551	HIV	Human Immunodeficiency Virus
1552	HIWT	Hobart Institute of Welding Technology
1553	HJD	Heliocentric Julian Day
1554	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1555	HKG	Hong Kong (ISO 3166 trigram)
1556	HKS	HyperKinetic Syndrome
1557	hL	Hectolitre
1558	HL	Holding Line
1559	HLL	High-Level Language
1560	HLN	Headline News
1561	HLOS	High Level Output Specification
1562	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1563	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1564	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1565	HMF	HydroxyMethyl Furfural
1566	HMO	Health maintenance organization
1567	HMP	Her Majesty's Prison
1568	HMRC	Her/His Majesty's Revenue and Customs
1569	HMSO	Her Majesty's Stationery Office
1570	HMV	His Master's Voice
1571	HN	Honduras (ISO 3166 digram)
1572	HND	Honduras (ISO 3166 trigram)
1573	Ho	Holmium
1574	HO	Honduras (FIPS 10-4 country code)
1575	HOLLAND	Hope Our Love Lasts And Never Dies
1576	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1577	HOT	Highly Optimised Tolerance
1578	HOTAS	Hands on throttle-and-stick
1579	HOV	High Occupancy Vehicle
1580	hp	horse power
1581	HPA	UK Health Protection Agency
1582	HPCL	Hindustan Petroleum Corporation Limited
1583	HPLC	High Performance Liquid Chromatography
1584	HPT	High[er] Payoff Target
1585	HPV	Human Papilloma Virus
1586	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1587	HRD	Human Resource Development
1588	HRF	High iness Forces
1589	HRH	His (or Her) Royal Highness
1590	HRM	His (or Her) Royal Majesty
1591	HRM	Human Resource Management
1592	HRT	Hormone Replacement Therapy
1593	Hs	Hassium
1594	HSBC	The Hong Kong and Shanghai Banking Corporation
1595	HSC	Higher School Certificate
1596	HSM	High School Musical
1597	HSMAD	Human Science/Modeling and Analysis Data
1598	HSN	Home Shopping Network
1599	HSPH	Harvard School of Public Health
1600	HSSI	High-Speed Serial Interface
1601	HST	see entry
1602	HTA	HyperText Application
1603	HTFU	Harden The Fuck Up
1604	HTH	Hope That Helps
1605	HTI	Haiti (ISO 3166 trigram)
1606	HTML	HyperText Markup Language
1607	HTR	Heated Towel Rail
1608	HTS	High-Temperature Superconducting wire
1609	HTTP	HyperText Transfer Protocol
1610	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1611	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1612	HUN	Hungary (ISO 3166 trigram)
1613	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1614	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1615	HVAP	High Velocity Armour Piercing (ammunition)
1616	HVHF	High velocity human factors
1617	HVM	High Velocity Missile
1618	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1619	HWM	Hardware morphing (computer graphics rendering)
1620	HXB	The glycoprotein Tenascian C
1621	HZ	Haze (METAR Code)
1622	Hz	Hertz
1623	IA	Iowa (postal symbol)
1624	IAAL	I Am A Lawyer
1625	IAB	International Association for Biologicals
1626	IAD	Ion Assisted Deposition
1627	IADS	Integrated Air Defence System
1628	IAEA	International Atomic Energy Agency
1629	IAF	{i} Industrial Areas Foundation
1630	IAFG	Information Assurance Focus Group
1631	IANA	Internet Assigned Numbers Authority
1632	IANAL	I Am Not A Lawyer
1633	IAS	Image Assessment System
1634	IASIP	It's Always Sunny in Philadelphia
1635	IATA	International Air Transport Association
1636	IATF	International Automotive Task Force
1637	IATSE	International Alliance of Theatrical Stage Employees
1638	IAUC	International Astronomical Union Circular
1639	IAW	In Accordance With
1640	IB	International Baccalaureate
1641	IBA	Important Bird Area
1642	IBD	Inflammatory Bowel Disease
1643	IBDM	Information Based Decision Making
1644	IBM	International Business Machines
1645	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1646	IBS	Irritable Bowel Syndrome
1647	ICANN	Internet Corporation for Assigned Names and Numbers
1648	ICAO	International Civil Aviation Organization
1649	ICBM	Intercontinental Ballistic Missile
1650	ICBN	International Code of Botanical Nomenclature
1651	ICE	In case of emergency
1652	ICES	International Council for the Exploration of the Sea
1653	ICF	Intelligent Community Forum
1654	ICMP	Internet Control Message Protocol
1655	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1656	ICO	Intermediate Circular Orbit
1657	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1658	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1659	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1660	ICRL	Individual Component Repair List
1661	ICRS	International Celestial Reference System
1662	ICSI	Intracytoplasmic Sperm Injection
1663	ICT	Information and communication technologies
1664	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1665	ICV	Infantry Carrier Vehicle
1666	ICYMI	In Case You Missed It
1667	IDC	International Data Corporation
1668	IDDI	I don't do initialisms (see irony)
1669	IDGAF	I don't give a fuck
1670	IDK	I don't know
1671	IDL	Interface Definition Language
1672	IDN	Indonesia (ISO 3166 trigram)
1673	IEA	International Energy Agency
1674	IEC	International Electrotechnical Commission
1675	IED	Improvised Explosive Device
1676	IELTS	International English Language Testing System
1677	IER	Information Exchange Requirement
1678	IET	Initial Entry Training
1679	IET	Institution of Engineering and Technology
1680	IETF	Internet Engineering Task Force
1681	IEW	Intelligence and Electronic Warfare
1682	IFAB	International Football Association Board
1683	IFAH	International Federation for Animal Health
1684	IFAP	International Federation of Agricultural Producers
1685	IFO	Identified Flying Object (see also UFO)
1686	IFOV	Instantaneous Field of View
1687	IFPI	International Federation of Phonographic Industries
1688	IFRB	International Frequency Registration Board
1689	IFV	Infantry Fighting Vehicle
1690	IG	Inspector General
1691	IGNOU	Indira Gandhi National Open University
1692	IGS	International Ground Station
1693	IHH	Idiopathic Hypogonadotropic Hypogonadism
1694	IHO	International Hydrographic Organization
1695	IHR	Institute for Historical Review
1696	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1697	II	Two (in Roman numerals)
1698	IICA	Inter-American Institute for Cooperation on Agriculture
1699	IIE	Innovative Interstellar Explorer
1700	III	Three (in Roman numerals)
1701	IIRC	If I Recall/Remember Correctly
1702	IISS	International Institute for Strategic Studies
1703	IJN	Imperial Japanese Navy (World War II)
1704	IJWP	Interim Joint Warfare Publication
1705	ILDS	Improved Landmine Detection System
1706	ILO	International Labour Organization
1707	ILRI	International Livestock Research Institute
1708	ILY	I Love You [pronounced ILL-LEE]
1709	IMBD	International Migratory Bird Day
1710	IMDb	Internet Movie Database
1711	IME	In My Experience
1712	IMHO	In My Humble/Honest Opinion
1713	IML	International Mister Leather
1714	IMNSHO	In My Not So Humble Opinion
1715	IMPAC	International Merchant Purchase Authorization Card
1716	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1717	IMPATT	IMPact Avalanche Transit Time diode
1718	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1719	IMRL	Individual Material iness List
1720	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1721	IMsL	International Ms. Leather
1722	IMT	Integrated Management Tool
1723	IMU	International Mathematical Union
1724	In	Indium
1725	INA	Immigration and Nationality Act
1726	INAS	International Near-Earth Asteroid Survey
1727	INCITS	InterNational Committee for Information Technology Standards
1728	IND	India (ISO 3166 trigram)
1729	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1730	inet	the Internet
1731	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1732	INFOSEC	Information Security
1733	INLA	Irish National Liberation Army
1734	INMARSAT	International Maritime Satellite organization
1735	INRIA	Institut national de recherche en informatique et en automatique
1736	INS	Immigration and Naturalization Service
1737	InSAR	Interferometric synthetic aperture radar
1738	INST	Information Standards and Technology
1739	INTERFET	International Force for East Timor
1740	INTSUM	Intelligence Summary
1741	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1742	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1743	IPB	Intelligence Preparation of the Battlefield
1744	IPL	Inferior Parietal Lobule
1745	IPO	Initial Public Offering
1746	IPT	Integrated Product/Project Team
1747	IPTS	Institute for Prospective Technological Studies
1748	IPTV	Internet Protocol TeleVision
1749	IPW	Interrogation of Prisoners of War
1750	Ir	Iridium
1751	IRAD	Internal Research and Development
1752	IRAN	(I) Inspect and Repair As Necessary
1753	IRAS	Infrared Astronomical Satellite
1754	IRB	International Rugby Board
1755	IRBM	Intermediate Range Ballistic Missile
1756	IREA	Intermountain Rural Electric Association
1757	IRINN	Islamic Republic of Iran News Network
1758	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1759	IRN	Iran (ISO 3166 trigram)
1760	IRO	International Refugee Organisation
1761	IRQ	Iraq (ISO 3166 trigram)
1762	IRS	U.S. Internal Revenue Service
1763	IRST	Infra-red Search and Track
1764	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1765	ISAR	Inverse SAR (Synthetic Aperture Radar)
1766	ISB	Intermediate Staging Base
1767	ISBN	International Standard Book Number (ISO 2108)
1768	ISCCP	International Satellite Cloud Climatology Project
1769	ISCII	Indian Standard Code for Information Interchange
1770	ISDN	Integrated Services Digital Network
1771	ISEF	Intel International Science and Engineering Fair
1772	ISEN	Internet Search Environment Number
1773	ISF	Internal Security Force
1774	ISIL	Islamic State of Iraq and the Levant
1775	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1776	ISL	Iceland (ISO 3166 trigram)
1777	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1778	ISMB	International Society of Matrix Biologists
1779	ISMC	Intelligent Sounding Meaningless Conversation
1780	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1781	ISPE	International Society for Pharmacoepidemiology
1782	ISRO	Indian Space Research Organisation
1783	ISSCR	International Society for Stem Cell Research
1784	ISSN	International standard serial number (ISO 3297)
1785	ISTC	Institute of Scientific and Technical Communications (UK)
1786	ISTS	Intel Science Talent Search
1787	ITA	Italy (ISO 3166 trigram)
1788	ITAG	Inertial Terrain-Aided Guidance
1789	ITALY	I'll Truly Always Love You
1790	ITAS	Improved Target Acquisition Sight
1791	ITC	InferoTemporal Cortex (neurophysiology)
1792	ITCZ	Intertropical Convergence Zone
1793	ITEC	Information Technology Exposition & Conference
1794	ITEMS	Interactive Tactical Environment Management System
1795	ITER	International Thermonuclear Experimental Reactor
1796	ITF	International Tennis Federation
1797	ITK	In The Know
1798	ITN	Independent Television News (British)
1799	ITT	International Telephone and Telegraph (U.S.)
1800	ITTO	International Tropical Timber Organization
1801	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1802	Iveco	Industrial Vehicles Corporation
1803	IVF	In Vitro Fertilisation
1804	IVI	Interchangeable Virtual Instrument
1805	IVIS	Inter-Vehicle Information System
1806	IVL	Inter-Visibility Line
1807	IVM	In Vitro [Oocyte] Maturation
1808	IVO	In Vicinity Of
1809	IW	Information Warfare
1810	IWARS	Infantry Warrior Simulation
1811	IWC	International Whaling Commission
1812	IWW	Industrial Workers of the World
1813	IX	Nine (in Roman numerals)
1814	IXT	IntraText digital library; IntraText lexical hypertext
1815	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1816	IZ	Iraq (FIPS 10-4 country code)
1817	J	Joule
1818	J1	Joint [Manpower &] Personnel Directorate
1819	J2	Joint Intelligence Directorate
1820	J3	Joint Operations Directorate
1821	J4	Joint Logistics Directorate
1822	J5	Joint Strategic Plans & Policy Directorate
1823	J7	Joint Operational Plans & Interoperability Directorate
1824	JA	Japan (FIPS 10-4 country code)
1825	JAFT	Just A Field Test
1826	JAL	Japan Airlines
1827	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1828	JAM	Jamaica (ISO 3166 trigram)
1829	JAMA	Journal of the American Medical Association
1830	JANET	Joint Academic Network
1831	JATO	Jet-Assisted Take-Off
1832	JB	Jail Bait
1833	JB	Junior Branch
1834	JBFSA	Joint Blue Force Situational Awareness
1835	JCDB	Joint Common Data Base
1836	JCDS	Joint Chiefs of the Defence Staff
1837	JCIDS	Joint Capabilities Integration and Development System
1838	JCL	Job Control Language
1839	JCP	Java Community Process
1840	JCS	Joint Chiefs of Staff
1841	JCW	Juggalo Championship Wrestling
1842	JDBC	Java Data Base Connectivity
1843	JDEM	Joint Dark Energy Mission
1844	JDL	Jewish Defense League
1845	JE	Jersey (FIPS 10-4 territory code)
1846	JEFX	Joint Expeditionary Force eXperiment
1847	JET	Joint European Torus
1848	JEZ	Joint Engagement Zone
1849	JFACC	Joint Force Air Component Commander
1850	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1851	JFC	Joint Force Commander
1852	JFK	John Fitzgerald Kennedy or the airport named after him.
1853	JFLCC	Joint Force Land Component Commander
1854	JFMCC	Joint Force Maritime Component Commander
1855	JFO	Journal of Field Ornithology
1856	JFSOCC	Joint Force Special Operations Component Commander
1857	JFTX	Joint Field Training Exercise
1858	JH	Japan Highway Public Corporation
1859	JH	Jharkhand (Indian state code)
1860	JI	Joint Implementation
1861	JIB	Joint Information Bureau
1862	JIC	Joint Intelligence Centre
1863	JINI	Java Intelligent Network Infrastructure
1864	JITC	Joint Interoperability Test Command
1865	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1866	JJAP	Japanese Journal of Applied Physics
1867	JL	Japan Airlines (IATA airline designator)
1868	JLA	Justice League of America
1869	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1870	JMS	Java Message Service
1871	JN	Jan Mayen Island (FIPS 10-4 territory code)
1872	JNI	Java Native Interface
1873	JNLP	Java Network Launch Protocol
1874	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1875	JOA	Joint Operations Area
1876	JOPES	Joint Operations Planning and Execution System
1877	JOR	Jordan (ISO 3166 trigram)
1878	JOTS	Joint Operations Tactical System
1879	JPL	Jet Propulsion Laboratory
1880	JPN	Japan (ISO 3166 trigram)
1881	JPOW	Joint Project Optic Windmill
1882	JRDF	Joint Rapid Deployment Forces
1883	JRE	Java Runtime Environment
1884	JREF	James Randi Educational Foundation
1885	JROC	Joint Requirements Oversight Council
1886	JROCM	JROC Memorandum
1887	JRRF	Joint Rapid Reaction Force
1888	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1889	JSAP	Japan Society of Applied Physics
1890	JSCSC	Joint Services Command and Staff College
1891	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
1892	JSF	Joint Strike Fighter
1893	JSIMS	Joint Simulation System
1894	JSOA	Joint Special Operations Area
1895	JSOTF	Joint Special Operations Task Force
1896	JSP	JavaServer Page
1897	JSP	Joint Services Publication
1898	JSR	Java Specification Request
1899	JSS	Joint Support Ship Project
1900	JTC	Joint Training Confederation
1901	JTF	Joint Task Force
1902	JTFEX	Joint Task Force Exercise
1903	JTLS	Joint Theater Level Simulation
1904	JTMD	Joint Theatre Missile Defence
1905	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
1906	JU	Juan de Nova Island (FIPS 10-4 territory code)
1907	JUGFET	JUnction Gate Field-Effect Transistor
1908	JUICE	JUpiter ICy Moon Explorer
1909	JUO	Joint Urban Operations
1910	JV	Joint Venture,Junior Varsity
1911	JW	Jehovah's Witnesses
1912	JWARS	Joint Warfare System (simulation)
1913	JWP	Joint Warfare Publication
1914	JY	Japanese Yen
1915	JZ	Joint Zone
1916	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
1917	k	Kilo-
1918	K	picokelvin
1919	K9	Canine Police Unit
1920	Ka	Kamov Design Bureau
1921	kA	Kiloampere
1922	KA	Knowledge Acquisition,Karnataka (Indian state code)
1923	KAF	Kandahar Air Field
1924	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
1925	KARNAC	Knowledge Aided Retrieval in Activity Context
1926	KARR	Knight Automated Roving Robot (Knight Rider character)
1927	KATUSA	Korean Augmentation To United States Army
1928	KAZ	Kazakhstan (ISO 3166 trigram)
1929	KBE	Knight Commander of the Order of the British Empire
1930	KBO	Kuiper Belt Object
1931	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
1932	kC	Kilocoulomb
1933	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
1934	KCL	King's College London
1935	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
1936	KCS	Kansas City Southern Railway (AAR reporting mark)
1937	KD	Kawasaki Disease,Kraft Dinner
1938	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
1939	KEDO	Korean Peninsula Energy Development Organization
1940	KEN	Kenya (ISO 3166 trigram)
1941	KERA	Kentucky Education Reform Act (of 1990)
1942	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
1943	KESR	Kent and East Sussex Railway.
1944	KET	Kentucky Educational Television,Key English Test
1945	kF	Kilofarad
1946	KFC	Kentucky Fried Chicken
1947	KFOR	UN Kosovo Force
1948	KFUPM	King Fahd University of Petroleum & Minerals
1949	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
1950	KGO	Knight of the Guelphic Order of Hanover
1951	KGZ	Kyrgyzstan (ISO 3166 trigram)
1952	KH	Cambodia (ISO 3166 digram)
1953	kH	Kilohenry
1954	KHL	Kontinental Hockey League
1955	KHM	Cambodia (ISO 3166 trigram)
1956	KHz	Kilohertz
1957	Ki	Kibi
1958	KI	Kiribati (ISO 3166 digram)
1959	KIA	Killed In Action
1960	KIDS	Knowledge-based Integrated Design System
1961	KIR	Kiribati (ISO 3166 trigram)
1962	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
1963	KIT	Keep In Touch
1964	KITECH	Korean Institute of Industrial Technology
1965	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
1966	kJ	Kilojoule
1967	kK	Kilokelvin
1968	KKK	Ku Klux Klan
1969	kL	Kilolitre
1970	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
1971	KLOC	Kilo Lines Of Code
1972	KM	Comoros,Knowledge Management
1973	kN	Kilonewton
1974	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
1975	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
1976	KO	Knocked Out
1977	KOR	Republic of Korea (ISO 3166 trigram)
1978	KP	Kim Possible
1979	KPMG	Klynveld,Peat,Marwick,Goerdeler
1980	KPNO	Kitt Peak National Observatory
1981	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
1982	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
1983	Kr	Krypton
1984	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
1985	kS	Kilosiemens
1986	KSC	Kennedy Space Center
1987	KSI	Killed or Seriously Injured
1988	KSU	Kansas State University
1989	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
1990	kT	Kilotesla
1991	KTS	Knight of the Tower and Sword (of Portugal)
1992	KU	Kuwait (FIPS 10-4 country code)
1993	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
1994	kV	Kilovolt
1995	KV	Kosovo
1996	kW	Kilowatt
1997	KW	Kuwait (ISO 3166 digram)
1998	KWB	Kids' WB!
1999	KWT	Kuwait (ISO 3166 trigram)
2000	KX	Cayman Airways (IATA airline designator)
2001	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2002	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2003	KZN	KwaZulu-Natal
2004	La	Lanthanum
2005	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2006	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2007	LAB	Logistics Assault Base
2008	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2009	LACMA	Los Angeles County Museum of Art
2010	LAD	Laser Aiming Device
2011	LADW	Local Air Defence Warning
2012	LAESI	Local Authority & Emergency Service Information
2013	LAN	Local Area Network
2014	LANL	Los Alamos National Laboratory
2015	LAO	Laos (ISO 3166 trigram)
2016	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2017	LARC	Livermore Advanced Research Computer (cf. LLNL)
2018	LARP	Live-Action Role-Playing
2019	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2020	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2021	LATA	Local Access Transport Area
2022	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2023	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2024	LAW	Light Antitank Weapon
2025	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2026	LB	Lebanon (ISO 3166 digram)
2027	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2028	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2029	LBN	Lebanon (ISO 3166 trigram)
2030	LBNL	Lawrence Berkeley National Laboratory
2031	LBR	Liberia (ISO 3166 trigram)
2032	LBS	Location-Based Services
2033	LBT	Large Binocular Telescope
2034	LBW	Leg Before Wicket
2035	LBY	Libya (ISO 3166 trigram)
2036	LCA	Saint Lucia (ISO 3166 trigram)
2037	LCC	Land Component Commander
2038	LCCP	Light Contingency Communications Package
2039	LCD	Liquid Crystal Display
2040	LCM	Least/Lowest Common Multiple
2041	LCS	League of Legends Championship Series
2042	LDA	Lateral Drift Apparatus (paratroops)
2043	LDC	Lesser Developing/Developed Country
2044	LDL	Low-Density Lipoprotein
2045	LDV	Local Defence Volunteers (British Home Guard)
2046	LDW	Lane Departure Warning (ADAS)
2047	LE	Lebanon (FIPS 10-4 country code)
2048	LEC	Local Exchange Carrier
2049	LED	Light-Emitting Diode
2050	LEGAD	Legal Advice
2051	Legs	level emotion gad speed
2052	LEMOSS	Long-Endurance MObile Submarine Simulator
2053	LEN	Large Extension Node
2054	LEP	Large Electron-Positron collider
2055	LER	Loss-Exchange Ratio
2056	LEU	Low-Enriched Uranium
2057	LF	Low Frequency
2058	LFO	Low Frequency Oscillation / Oscillator
2059	LFTR	Liquid fluoride thorium reactor
2060	LG	Latvia (FIPS 10-4 country code)
2061	LGM	Little Green Men
2062	LGS	Landsat Ground Station
2063	LHC	Large Hadron Collider
2064	LHS	Left Hand Side
2065	Li	Lithium
2066	LIBOR	London Interbank Offered Rate
2067	LIBS	Laser Induced Breakdown Spectroscopy
2068	LIE	Liechtenstein (ISO 3166 trigram)
2069	LIGO	Laser Interferometer Gravitational-Wave Observatory
2070	LINEAR	Lincoln Near-Earth Asteroid Research
2071	LISA	Laser Interferometer Space Antenna
2072	LIVE	Liquid Inertial Vibration Eliminator
2073	LJJ	Lord Justices of Appeal
2074	LK	Sri Lanka (ISO 3166 digram)
2075	LKA	Sri Lanka (ISO 3166 trigram)
2076	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2077	LLAD	Low Level Air Defence
2078	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2079	LLC	Limited Liability Company
2080	LLLTV	Low-Light Level Television
2081	LLNL	Lawrence Livermore National Laboratory
2082	LLP	Limited Liability Partnership
2083	LLTR	Low-Level Transit Route
2084	LMAO	Laughing My Ass Off (Internet shorthand)
2085	LMB	Lick My Balls
2086	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2087	LMN	Lifetime Movie Network
2088	LMS	Like My Status (Internet shorthand)
2089	LMV	() Light Motor Vehicle
2090	LNER	London and North Eastern Railway
2091	LNG	Liquefied Natural Gas
2092	LNO	Liaison Officer
2093	LO	Slovakia (FIPS 10-4 country code)
2094	LOA	Limit Of Advance
2095	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2096	LoD	Lines of Development (UK)
2097	LOFAR	Low Frequency Analysis and Recording
2098	LOGPAC	Logistics Package
2099	LOL	Laughing Out Loud (Internet shorthand)
2100	LOMEZ	Low Altitude Missile Engagement Zone
2101	LONEOS	Lowell Observatory Near-Earth-Object Search
2102	LORTID	LOng Range Target IDentification
2103	LOS	Line Of Sight
2104	LOSAT	Line-Of-Sight Anti-Tank (missile)
2105	LOTA	Licentiate of the Orthodontic Technicians Association
2106	LOTIS	Livermore Optical Transient Imaging System
2107	LOTS	Logistics Over-The-Shore
2108	LPC	Linear Predictive Coding
2109	LPG	Liquefied Petroleum Gas (cf. LNG)
2110	LPI	Low Probability of Intercept
2111	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2112	Lr	Lawrencium
2113	LR	Liberia (ISO 3166 digram)
2114	LRC	Logistics iness Center
2115	LRGW	Long-Range Guided Weapon
2116	LRICBM	Limited Range ICBM
2117	LRIP	Low Rate Initial Production
2118	LRP	Logistics Release Point
2119	LRPE	Long-Range Planning Element
2120	LRS	Long Range Surveillance
2121	LRU	Line-Replaceable Unit
2122	LSI	Large-Scale Integration
2123	LSIF	Labour Sponsored Investment Fund
2124	LSND	Liquid Scintillator Neutrino Detector
2125	LSO	Lesotho (ISO 3166 trigram)
2126	LSST	Large Synoptic Survey Telescope
2127	Lt	Lieutenant
2128	LtC	Lieutenant-Colonel (U.S.)
2129	LTC	Long-Term Costing
2130	Ltd	Limited
2131	LTDP	Long-Term Defence Plan
2132	LTI	Linear Time-Invariant
2133	LTM	Acronym for Laughing To Myself
2134	LTP	Long-Term Potentiation
2135	LTU	Lithuania (ISO 3166 trigram)
2136	LU	Acronym Love You
2137	LU	Loonatics Unleashed
2138	Lu	Lutetium
2139	LUCA	Last Universal Common Ancestor
2140	LUG	Linux User Group
2141	LULU	Locally Unwanted Land Use (urbanism)
2142	LUX	Luxembourg (ISO 3166 trigram)
2143	LVA	Latvia (ISO 3166 trigram)
2144	LVEF	Left Ventricular Ejection Fraction
2145	Lw	Lawrencium (obsolete 1963)
2146	LWR	Laser warning receiver
2147	LWRC	Land Warfare Resources Corporation
2148	LWS	Land Warrior System
2149	LX	Electrics (theatrical term)
2150	LYAO	Laugh Your Ass Off
2151	LYLAS	Love You Like A Sister
2152	Ma	Megaannum
2153	mA	Milliampere
2154	MAA	Mathematical Association of America
2155	MAAC	Metro Atlantic Athletic Conference
2156	MACE	Multi-Agent Computing Environment
2157	MACHO	MAssive Compact Halo Object
2158	MAF	Maintenance Action Form
2159	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2160	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2161	MAGTF	Marine Air-Ground Task Force
2162	MALD	Miniature Air-Launched Decoy
2163	MANPADS	MAN-Portable Air Defence System
2164	MANPRINT	MANpower and PeRsonnel INTegration
2165	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2166	MAOI	Monoamine oxidase inhibitor
2167	MAPS	Monitoring Avian Productivity and Survivorship
2168	MAR	Morocco (ISO 3166 trigram)
2169	MarBEF	Marine Biodiversity and Ecosystem Functioning
2170	MARCENT	United States Marine Forces Central Command
2171	MARFORCC	Marine Force Component Commander
2172	MASAS	Monte Agliale Supernovae and Asteroid Survey
2173	Maser	Microwave Amplification by Stimulated Emission of Radiation
2174	MASH	Mobile Army Surgical Hospital
2175	MASINT	Measurement And Signature Intelligence
2176	MAVS	Mobile Artillery Vehicle System
2177	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2178	MBCC	Migratory Bird Conservation Commission (U.S.)
2179	MBCS	Multi-Byte Character Set
2180	MBI	Moody Bible Institute
2181	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2182	MBM	Meat and Bone Meal
2183	MBT	Main Battle Tank
2184	MBTI	Myers-Briggs Type Indicator
2185	mC	Millicoulomb
2186	MCDL	Model Composition Definition Language
2187	MCFT	Modified Compression Field Theory
2188	MCG	Melbourne Cricket Ground
2189	MCIS	Mellon Collie and the Infinite Sadness
2190	MCM	Mine Counter-Measures
2191	MCMV	Mine Counter-Measure Vessel
2192	MCR	My Chemical Romance
2193	MCSF	Marine Corps Security Forces
2194	MCT	Movement Control Team
2195	MCTIS	Mounted Co-operative Target Identification System
2196	Md	Mendelevium
2197	MDNA	Madonna's 12th studio album title (2012)
2198	MDO	Membership Driven Organisation
2199	MDP	Markov Decision Process
2200	MDT	Mountain Daylight Time (UTC-6 hours)
2201	MDV	Maldives (ISO 3166 trigram)
2202	Me	Messerschmitt
2203	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2204	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)
2205	MEDEVAC	Medical evacuation
2206	MEDS	Mission Essential Data Set
2207	MEG	MagnetoEncephaloGraphy
2208	MELT	Metallic Line/Loop Test (ing)
2209	MEMS	Microelectromechanical System
2210	MER	Mars Exploration Rover
2211	MERL	Mitsubishi Electric Research Laboratories
2212	MES	Manufacturing Execution Systems
2213	METAR	[Meteorological] Aviation Routine weather report
2214	METOC	Meteorological and Oceanographic
2215	MeV	Megaelectronvolt
2216	MEX	Mexico (ISO 3166 trigram)
2217	MEZ	Missile Engagement Zone
2218	mF	Millifarad
2219	MGPAM	My Gym Partner's a Monkey
2220	MGS	Mobile Gun System
2221	mH	Millihenry
2222	MHC	Major Histocompatibility Complex
2223	MHHW	Mean Higher High Water (nautical charts)
2224	MHL	Marshall Islands (ISO 3166 trigram)
2225	MHLW	Mean Higher Low Water (nautical charts)
2226	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2227	MHW	Mean High Water (nautical charts)
2228	MHWN	Mean High Water Neaps (nautical charts)
2229	MHWS	Mean High Water Springs (nautical charts)
2230	MHz	Megahertz
2231	Mi	Mebi
2232	MIA	Missing In Action
2233	MICLIC	Mine Clearing Line Charge
2234	MICOM	Missile Command
2235	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2236	MIDAS	Man-machine Integration Design and Analysis System
2237	MIDI	Musical Instrument Digital Interface
2238	MIDS	Multi-Function Information Distribution System
2239	MIFG	Shallow Fog (METAR Code)
2240	MIKE	Monitoring of Illegal Killing of Elephants
2241	MIL	Man-In-the-Loop
2242	MILC	Mirrorless interchangeable-lens camera
2243	MILF	Mother I'd Like to Fuck
2244	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2245	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2246	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2247	MIRV	Multiple Independent Reentry Vehicle
2248	MISREP	Mission Report
2249	MISSI	Multilevel Information System Security Initiative
2250	MITL	Man-In-The-Loop
2251	MITS	see entry
2252	mJ	Millijoule
2253	MJD	Modified Julian Day
2254	mK	Millikelvin
2255	MKG	Michael Kidd-Gilchrist (American basketball player)
2256	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2257	mL	Millilitre
2258	MLB	Major League Baseball
2259	MLC	Member of the Legislative Council (in India)
2260	MLE	Maximum likelihood estimation
2261	MLHW	Mean Lower High Water (nautical charts)
2262	MLI	Mali (ISO 3166 trigram)
2263	MLL	Major League Lacrosse
2264	MLLW	Mean Lower Low Water (nautical charts)
2265	MLP	My Little Pony
2266	MLRS	Multiple-Launch Rocket System
2267	MLT	Malta (ISO 3166 trigram)
2268	MLW	Mean Low Water (nautical charts)
2269	MLWN	Mean Low Water Neaps (nautical charts)
2270	MLWS	Mean Low Water Springs (nautical charts)
2271	Mm	Megametre
2272	mm	Millimetre
2273	MMEV	Multi-Mission Effects Vehicle
2274	MMI	Magical MonkeyZ Inc.
2275	MMI	Man-Machine Interface
2276	MMI	McLean Meditation Institute
2277	MMIC	McLean Meditation Institute Certified
2278	MMO	Massively Multiplayer Online (computer game)
2279	MMOR	Master of Management in Operations Research
2280	MMORPG	Massively multiplayer online role-playing game
2281	MMPR	Mighty Morphin Power Rangers
2282	MMS	Multimission Modular Spacecraft
2283	Mn	Manganese
2284	mN	Millinewton
2285	MNB	Multinational Brigade
2286	MNE	Montenegro (ISO 3166 trigram)
2287	MNMF	Multi-National Maritime Force
2288	MNP	Northern Mariana Islands (ISO 3166 trigram)
2289	MNS	Mission Needs Statement
2290	Mo	Molybdenum
2291	MOA	Museum of Art (Brigham Young University)
2292	MOCAS	Mechanization Of Contract Administration Services
2293	MoD	Ministry of Defence (United Kingdom) and various other countries
2294	modem	Modulator-Demodulator
2295	Moe	Marvel of entertainment
2296	MOE	Measure Of Effectiveness
2297	MOF	Ministry of Finance (Japan)
2298	MOFA	Ministry of Foreign Affairs (Japan)
2299	MOID	Minimum Orbital Intersection Distance
2300	MOJWA	Movement for Oneness and Jihad in West Africa
2301	MOLO	Mobile Other Licensed Operator (UK)
2302	MOM	Master's Degree in Oriental medicine
2303	MOM	Message Oriented Middleware
2304	MoM	Multiple of the median
2305	MoMA	Museum of Modern Art (NYC)
2306	MOND	Modified Newtonian Dynamics
2307	MOO	Measure Of Outcome
2308	MOPP	Mission-Oriented Protective Posture
2309	MORP	Meteorite Observation and Recovery Project
2310	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2311	MOT	Ministry of Transport (UK)
2312	MOTA	Member of the Orthodontic Technicians Association
2313	MOTESS	Moving Object and Transient Event Search System
2314	MOU	Memorandum Of Understanding
2315	MOW	Maintenance of way (also MW)
2316	MOZ	Mozambique (ISO 3166 trigram)
2317	MPa	Megapascal
2318	mPa	Millipascal
2319	MPAA	Motion Picture Association of America
2320	MPEC	Minor Planet Electronic Circular
2321	MPEG	Motion Pictures (Coding) Experts Group
2322	MPEV	Multi-Purpose Engineering Vehicle
2323	MPF	Maritime Prepositioning Force
2324	MPFC	Medial PreFrontal Cortex
2325	MPG	Miles Per Gallon
2326	MPMC	Medial PreMotor Cortex
2327	MPSI	Member of the Pharmaceutical Society of Ireland
2328	MPSoC	MultiProcessor System-on-Chip
2329	MPSRON	Maritime Propositioning Ship Squadron
2330	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2331	MRAV	Multi-Role Armoured Vehicle
2332	MRBM	Medium Range Ballistic Missile
2333	MRC	Maintenance Requirements Card
2334	MRD	Motorized Rifle Division
2335	MRGW	Medium-Range Guided Weapon
2336	MRI	Magnetic Resonance Imaging
2337	MRL	Multiple Rocket Launcher
2338	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2339	MRS	Magnetic Resonance Spectroscopy
2340	MRSA	Methicillin-resistant Staphylococcus aureus
2341	MRTFB	U.S. Major Range and Test Facility Base
2342	Ms	Megasecond
2343	mS	Millisiemens
2344	MSD	Minimum Safe Distance
2345	MSDB	Multi Source Data Base
2346	MSE	Multiple Subscriber Element
2347	MSG	Message
2348	MSLP	Mean Sea Level Pressure
2349	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2350	MSO	Multiple System Operator
2351	MSPB	Merit Systems Protection Board
2352	MSSA	Methicillin-susceptible Staphylococcus aureus
2353	Mt	Meitnerium
2354	mT	Millitesla
2355	MTBF	Mean time between failures
2356	MtF	Male-to-female transsexual
2357	MTG	Magic: The Gathering
2358	MTQ	Martinique (ISO 3166 trigram)
2359	MTT	Methylthiazol tetrazolium (assay)
2360	MTWS	MAGTF Tactical Warfare System
2361	MUS	Mauritius (ISO 3166 trigram)
2362	mV	Millivolt
2363	MVC	Missouri Valley Conference
2364	MVFC	Missouri Valley Football Conference
2365	MVNO	Mobile virtual network operator
2366	mW	Milliwatt
2367	MWESH	Machismo Wizards Extended SHelter (operating system)
2368	MWI	Malawi (ISO 3166 trigram)
2369	MWOA	Mount Wilson Observatory Association
2370	MWTB	Mounted Warfare Test Bed
2371	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2372	MYOB	Mind Your Own Business
2373	MYS	Malaysia (ISO 3166 trigram)
2374	MYT	Mayotte (ISO 3166 trigram)
2375	n	Nano
2376	N3F	National Fantasy Fan Federation
2377	nA	Nanoampere
2378	Na	Sodium (Latin Natrium)
2379	NAA	N-Acetylaspartate
2380	NAAD	North American Air Defense
2381	NAAQS	National Ambient Air Quality Standards
2382	NAAWS	NATO Anti-Air Warfare System
2383	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2384	NACC	North Atlantic Cooperation Council
2385	NACISA	NATO Communications and Information Systems Agency
2386	NACMA	NATO Air Command and Control System Management Agency
2387	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2388	NAEC	U.S. Naval Air Engineering Center
2389	NAFERA	Native American Free Exercise of Religion Act
2390	NAFLD	NonAlcoholic Fatty Liver Disease
2391	NAFO	Northwest Atlantic Fisheries Organization
2392	NAFTA	North American Free Trade Agreement
2393	NAGPRA	Native American Graves Protection and Repatriation Act
2394	NAICS	North American Industry Classification System
2395	NAIL	Neurotics Anonymous
2396	NAILS	National Airspace Integrated Logistics System
2397	NAIRU	Non Accelerating Inflation Rate of Unemployment
2398	NAK	Negative Acknowledge
2399	NAM	Namibia (ISO 3166 trigram)
2400	NAMBLA	North American Man-Boy Love Association
2401	NAMRL	Naval Aerospace Medical Research Laboratory
2402	NaN	Not A Number (computing)
2403	NAO	UK National Audit Office
2404	NAPS	Navy Acquisition Procedures Supplement
2405	NARA	(U.S.) National Archives and Records Administration
2406	NARAL	National Abortion Rights Action League
2407	NARDAC	Naval Regional Data Automation Center
2408	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2409	NARPV	National Association for Remotely Piloted Vehicles
2410	NASCAR	National Association for Stock Car Auto Racing
2411	NASDAQ	National Association of Securities Dealers Automated Quotations
2412	NASED	National Association of State Election Directors [1][2]
2413	NASH	Non-Alcoholic Steatohepatitis
2414	NASP	National Aerospace Plane
2415	NASS	National Association of Secretaries of State [3]
2416	NatGeo	National Geographic
2417	NaUKMA	National University of Kyiv-Mohyla Academy
2418	NAV	Navigation[al]
2419	NAVCAMS	Naval Communications Area Master Station
2420	NAVCC	National Audio-Visual Conservation Center
2421	NAVCENT	Naval Forces U.S. Central Command
2422	NAVDAC	Naval Data Automation Command
2423	NAVEUR	Naval Forces U.S. European Command
2424	NAVFOR	Naval Force
2425	NAVMACS	Naval Modular Automatic Communication Subsystem
2426	NAVNET	Navy Network
2427	NAVS	Non-Cooperative Airborne Vector Scoring
2428	NAVSAT	Navigation Satellite
2429	NAVSPACECOM	U.S. Navy Space Command
2430	NAVSPASUR	U.S. Naval Space Surveillance System
2431	NAVSTAR	Navigation Satellite Timing And Ranging
2432	NAVTACNET	Navy Tactical Network
2433	NAWC	U.S. Naval Air Warfare Center
2434	Nb	Niobium
2435	NBA	National Basketball Association
2436	NBL	National Basketball League (Australia)
2437	NBT	Nitroblue tetrazolium (assay)
2438	nC	Nanocoulomb
2439	NCA	National Command Authority
2440	NCAR	U.S. National Center for Atmospheric Research
2441	NCB	National Codification Bureau
2442	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2443	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2444	NCDDR	U.S. National Center for the Dissemination of Disability Research
2445	NCI	U.S. National Cancer Institute
2446	NCL	New Caledonia (ISO 3166 trigram)
2447	NCLR	National Council of La Raza
2448	NCMO	No Commitment Make Out
2449	NCO	Non-Commissioned Officer
2450	NCP	Net Contracted Purchases
2451	NCR	National Cash Register Co.
2452	NCTR	Non-Co-operative Target Recognition
2453	NCW	Network Centric Warfare
2454	Nd	Neodymium
2455	NDAA	U.S. National Defense Authorization Act
2456	NDBP	Non-Departmental Public Body (Scotland)
2457	NDP	New Democratic Party (Canada)
2458	NDS	Nintendo DS
2459	Ne	Neon
2460	NECTEC	National Electronics and Computer Technology Center (Thailand)
2461	NEMS	National Energy Modeling System (USDOE-EIA)
2462	NEPA	National Environmental Policy Act
2463	NER	Niger (ISO 3166 trigram)
2464	NERICA	New Rice for Africa
2465	NESP	NSA/CSS Enterprise Standards Program
2466	NET	National Educational Television
2467	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2468	NETL	(US) National Energy Technology Laboratory
2469	NETWARS	Network Warfare Simulation
2470	NEX	Navy EXchange
2471	nF	Nanofarad
2472	NF	Norfolk Island (ISO 3166 digram)
2473	NFER	National Foundation for Educational Research
2474	NFG	No Fucking Good
2475	NFHS	National Federation of State High School Associations
2476	NFI	Not F****** Interested
2477	NFK	Norfolk Island (ISO 3166 trigram)
2478	Nfld	Newfoundland
2479	NFPA	National Fluid Power Association (United States)
2480	NFT	No Further Text
2481	NGATS	New Generation Army Targetry System
2482	NGH	Northern General Hospital
2483	NGO	non-governmental organization
2484	NGS	Naval Gunfire Support
2485	nH	Nanohenry
2486	NHANES	National Health and Nutrition Examination Survey
2487	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2488	NHB	No Holds Barred radio (Link)
2489	NHL	National Hockey League
2490	NHRA	National Hot Rod Association
2491	NHS	National Health Service (UK)
2492	Ni	Nickel
2493	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2494	NIAG	NATO Industrial Advisory Group
2495	NIAID	National Institute of Allergies and Infectious Disease
2496	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2497	NIB	New In Box (Internet auction/trading listings)
2498	NIBP	Non-invasive blood pressure monitor
2499	NicA	Nicotine Anonymous
2500	NICAP	National Investigations Committee on Aerial Phenomena
2501	NICE	UK. National Institute for Health and Clinical Excellence
2502	NICHD	National Institute of Child Health and Human Development [4]
2503	NICP	National Inventory Control Point
2504	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2505	NIDRR	National Institute on Disability Research and Rehabilitation
2506	NIEHS	National Institute of Environmental Health Sciences
2507	NIIN	National Item Identification Number
2508	NIMA	National Imagery and Mapping Agency (became NGA)
2509	NIMBY	Not In My Back Yard (See NOME)
2510	NIMG	Not In My Generation
2511	NIN	Nine Inch Nails (band)
2512	NIPR	National Institute of Polar Research (Japan)
2513	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2514	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2515	NISCAP	NSA Information System Certification and Accreditation Program
2516	NISER	National Institute of Science Education and Research
2517	NIST	National Institute of Standards and Technology
2518	NITFS	National Imagery Transmission Format Standard
2519	NIU	Niue (ISO 3166 trigram)
2520	nJ	Nanojoule
2521	NJ	New Jersey (postal symbol)
2522	NJHS	National Junior Honor Society
2523	NJPW	New Japan Pro Wrestling
2524	nK	Nanokelvin
2525	NKA	No Known Allergies
2526	nL	Nanolitre
2527	NLB	Non-Linear Battlefield
2528	NLD	Netherlands (ISO 3166 trigram)
2529	NLF	National Liberation Front (disambiguation)
2530	NLL	National Lacrosse League
2531	NLW	Non-Lethal Weapon
2532	nm	Nanometre
2533	NM	New Mexico (postal symbol)
2534	NMCI	Navy Marine Corps Intranet
2535	NMCS	Not Mission Capable Supply (SM&R code)
2536	NMD	U.S. National Missile Defense
2537	NMN	No middle name
2538	NMR	Nuclear Magnetic Resonance
2539	NMSG	NATO Modelling and Simulation Group
2540	nN	Nanonewton
2541	NNE	North North-East
2542	NNSA	U.S. National Nuclear Security Administration
2543	NNW	North North-West
2544	No	Nobelium
2545	NOAA	U.S. National Oceanic and Atmospheric Administration
2546	NOAF	Norwegian Air Force
2547	NOAO	National Optical Astronomy Observatory
2548	NOC	UK. National Oceanography Centre
2549	NODEF	NATO Oceanographic Data Exchange Format
2550	NOGI	New Orleans Grande Isle (award for diving)
2551	NOLF	Navy OutLying Field
2552	NOME	Not on Mars Either
2553	NOME	Not on Mars Either (see NIMBY)
2554	NOR	Norway (ISO 3166 trigram)
2555	NORELPREF	No religious preference
2556	NORTHAG	Northern Army Group
2557	NOSA	NATO OSI Security Architecture
2558	NOTAFLOF	No One Turned Away For Lack Of Funds
2559	NOW	National Organization for Women
2560	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2561	NPB	Nippon Professional Baseball
2562	NPCS	Non-Passenger Coaching stock (in Railways)
2563	NPD	Nationaldemokratische Partei Deutschlands (German)
2564	NPDI	New Product Development and Introduction
2565	NPG	Needline/Network Participation Group
2566	NPH	Normal Pressure Hydrocephalus
2567	NPO	nothing by mouth
2568	NPOV	Neutral Point Of View
2569	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2570	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2571	NRA	National Rifle Association
2572	NRAO	National Radio Astronomy Observatory
2573	NRDC	(U.S.) Natural Resources Defense Council
2574	NREL	U.S. National Renewable Energy Laboratory
2575	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2576	NRMP	National Resident Matching Program (U.S. medicine)
2577	NRO	U.S. National Reconnaissance Office
2578	NRT	Near Real Time
2579	NRU	Nauru (ISO 3166 trigram)
2580	ns	Nanosecond
2581	nS	Nanosiemens
2582	NSABB	National Science Advisory Board for Biosecurity
2583	NSAID	Non-Steroidal Anti-Inflammatory Drug
2584	NSB	Norges Statsbaner (Norwegian State Railways)
2585	NSC	National Security Council
2586	NSDL	National Science Digital Library (US)
2587	NSG	National System for Geospatial-Intelligence
2588	NSN	National Stock Number
2589	NSNA	National Student Nurses' Association
2590	NSO	National Standardization Office (ABCA)
2591	NSS	(U.S.) Naval Simulation System
2592	NST	(UK) Nimrod Software Team
2593	NSTAC	National Security Telecommunications Advisory Committee
2594	NSW	New South Wales (postal symbol)
2595	nT	Nanotesla
2596	NTDS	Naval Tactical Data System
2597	NTP	Network Time Protocol
2598	NTR	Network Time Reference
2599	NTRA	National Thoroughbred Racing Association
2600	NTSB	National Transportation Safety Board
2601	NTV	Non-Tactical Vehicle
2602	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2603	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2604	NUTS	Nuclear Utilization Target Selection
2605	NUWC	U.S. Naval Undersea Warfare Center
2606	nV	Nanovolt
2607	NVEOL	Night Vision and Electro-Optics Laboratory
2608	NVG	Night Vision Goggles
2609	NVL	Night Vision Laboratory
2610	nW	Nanowatt
2611	NW	North-West
2612	NW	Nuclear Weapon
2613	NWA	National Wrestling Alliance
2614	NWF	National Wildlife Federation
2615	NWFZ	Nuclear-Weapon-Free Zone
2616	NWHN	U.S. National Women's Health Network
2617	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2618	NWOAHM	New Wave of American Heavy Metal
2619	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2620	NWRA	National Wildlife Rehabilitators Association
2621	NWSL	National Women's Soccer League (U.S.)
2622	NWT	North-West Territories
2623	NXA	21st arcade game in the Pump It Up series
2624	NXD	Native XML
2625	NXE	New Xbox Experience
2626	NXG	New Cross Gate station
2627	NXL	National XBall League
2628	NXN	Nike Cross Nationals
2629	NY	New York (postal symbol)
2630	NYC	New York City
2631	NYHA	New York Heart Association
2632	NYO	National Youth Orchestra of Great Britain
2633	NYSE	New York Stock Exchange
2634	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2635	NZC	New Zealand Cricket
2636	NZL	New Zealand (ISO 3166 trigram)
2637	NzL	Noze looan (online/event listings)
2638	NZOSS	New Zealand Open Source Society
2639	NZRU	New Zealand Rugby Union
2640	OAC	On Approved Credit
2641	OAP	Old Age Pensioner (UK)
2642	OARSI	Osteoarthritis Research Society International
2643	OAS	Organization of American States
2644	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2645	OASIS	Ontario Association of Sewage Industry Services
2646	OASP	Operational Analysis Support Paper/Plan
2647	OAU	Organization for African Unity
2648	OBE	Officer of the Order of the British Empire
2649	OBX	Outer Banks (North Carolina)
2650	OC	Officer Commanding
2651	OCD	Obsessive-Compulsive Disorder
2652	OCFS	Oracle Cluster File System
2653	OCFS2	Oracle Cluster File System Release 2
2654	OCMCC	[2] Orchard County MCC
2655	OCN	Oncology Certified Nurse
2656	OCO	Oort Cloud Object
2657	OCR	Optical Character Recognition
2658	OCS	see entry
2659	ODAS	OCA-DLR Asteroid Survey
2660	ODBC	Open DataBase Connectivity
2661	OEA	(U.S.) Office of Economic Adjustment
2662	OECD	Organisation for Economic Co-operation and Development (international)
2663	OED	Oxford English Dictionary
2664	OEG	Operation Exposure Guidance
2665	OEIS	On-Line Encyclopedia of Integer Sequences
2666	OEM	Original Equipment Manufacturer
2667	OFA	Occipital Face Area
2668	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2669	OGC	Open Geospatial Consortium
2670	OGD	Other Government Department
2671	OGO	Other Government Organization
2672	OH	Ohio (postal symbol)
2673	OHC	OverHead-Cam engine
2674	OHHLA	Original Hip-Hop Lyrics Archive
2675	OHIP	Ontario Health Insurance Plan
2676	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2677	OHP	Observatoire de Haute-Provence
2678	OHSS	Ovarian Hyperstimulation Syndrome
2679	OIC	Officer In Charge
2680	OIF	Operation Iraqi Freedom
2681	OIOC	Oriental & India Office Collections (in the British Library)
2682	OJT	On-the-Job Training
2683	OKC	Oklahoma City
2684	OLED	Organic Light-Emitting Diode
2685	OLS	Operational Linescan System
2686	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2687	OME	Osaka Mercantile Exchange
2688	OMFG	Oh My Fucking God
2689	OMG	Oh My God or Or My Gosh
2690	OMGW	Oh My Gosh it's Windy
2691	OMN	Oman (ISO 3166 trigram)
2692	OMNCS	U.S. Office of the Manager for the National Communications System
2693	OMP	Order of Mapungubwe in Platinum
2694	OMS	Order of Mapungubwe in Silver
2695	OMT	Object Model Template
2696	ON	Ontario (postal symbol)
2697	ONC	Orthopaedic Nurse Certified
2698	ONG	Orthodontic National Group
2699	ONI	(U.S.) Office of Naval Intelligence
2700	ONS	Operational Needs Statement
2701	OOAD	Object Oriented Analysis and Design
2702	OOBE	Out-of-body experience
2703	OOCL	Orient Overseas Container Line
2704	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2705	OOF	Out of Facility
2706	OOMF	One Of My Followers
2707	OOO	Out Of the Office
2708	OOTW	Operations Other Than War
2709	OP	Observation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point,in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items),Overpowered,often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong
2710	OPAC	Online Public Access Catalogue
2711	OPCON	Operational control
2712	OPCW	Organisation for the Prohibition of Chemical Weapons
2713	OPEC	Organization of the Petroleum Exporting Countries
2714	OPFOR	Opposing force
2715	OPINTEL	Operational Intelligence
2716	OPLAN	Operation plan (also OpPlan)
2717	OPORD	Operation order
2718	OPSEC	Operations security,Open Platform for Security
2719	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2720	OPTAR	Operational target
2721	OPV	Offshore Patrol Vessel
2722	OQ	Order Quantity,in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items)
2723	OR	Operating Room (surgery),Operational/Operations Research,Oregon (postal symbol),overreciprocation,when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable
2724	ORAU	Oak Ridge Associated Universities
2725	ORB	Object Request Broker
2726	ORBAT	Order of Battle
2727	ORD	Office of Research and Development,Operational Requirements Document
2728	ORF	Operational iness Float
2729	ORISE	Oak Ridge Institute for Science and Education
2730	ORNL	Oak Ridge National Laboratory
2731	ORR	Oak Ridge Reservation (U.S. DOE),Office of Rail Regulation (UK government),Office of Refugee Resettlement,(CIA) Office of Research and Reports,Operational iness Rate,Operational iness Review
2732	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2733	OS	Operating System
2734	Os	Osmium
2735	OSA	Order of St. Augustine
2736	OSCE	Organisation for Security and Cooperation in Europe
2737	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2738	OSDL	Open Source Development Labs
2739	OSE	Own Separate Entrance
2740	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2741	OSETI	Optical SETI also Optical SETI
2742	OSHA	Occupational Safety and Health Administration
2743	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2744	OSIA	(U.S.) On-Site Inspection Agency
2745	OSIRIS	Optical,Spectroscopic,and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias)
2746	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2747	OSM	One Saturday Morning
2748	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2749	OSPA	Operations Security Professional's Association site of OSPA
2750	OSPA	Oregon School Psychologists Association [3]
2751	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2752	OSU	Ohio State University,Oklahoma State University
2753	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2754	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2755	OTC	Over-The-Counter (drugs)
2756	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2757	OTEA	(U.S. Army) Operational Test Evaluation Agency
2758	OTI	Office of Transition Initiatives (United States Agency for International Development)
2759	OTOH	On The Other Hand
2760	OTS	Off the scale,sexually untouchable except for a lot of money
2761	OTSBH	Over The Shoulder Boulder Holder
2762	OTW	On The Way
2763	OTYBL	Over To You Blue Leader
2764	OTYRL	Over To You Red Leader
2765	OU	University of Oklahoma
2766	OW	Old Wykehamist
2767	OWN	Oprah Winfrey Network
2768	OX	IATA code for Orient Thai Airlines
2769	OXC	Optical cross-connect
2770	OXM	Official Xbox Magazine
2771	OXT	Oxytocin
2772	OZ	(?) Australia
2773	p	pico
2774	P2P	Peer-to-peer (networking)
2775	pA	picoampere
2776	PAA	Position Area for Artillery
2777	PABX	Private Automated Branch eXchange (company phone system)
2778	PACOM	(U.S.) Pacific Command
2779	PADI	Professional Association of Diving Instructors
2780	PAEK	PolyArylEtherKetone
2781	PAFC	Plymouth Argyle Football Club
2782	PAH	Polycyclic aromatic hydrocarbon
2783	PAHO	Pan American Health Organization
2784	PAK	Pakistan (ISO 3166 trigram)
2785	PAM	Precision Attack Missile
2786	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2787	PARC	Palo Alto Research Center
2788	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2789	PARP	(NATO Partnership for Peace) Planning And Review Process
2790	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2791	PAS	See entry
2792	PASR	Personnel Accounting and Strength Reporting
2793	PATH	Port Authority Trans-Hudson
2794	PAYD	Pay As You Drive
2795	PAYE	Pay As You Earn
2796	Pb	Lead (Latin Plumbum)
2797	PB	PolyButylene
2798	PBB	PolyBrominated Biphenyl
2799	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2800	PBD	PolyButaDiene
2801	PBDE	PolyBrominated Diphenyl Ether
2802	PBI	PolyBenzImidazole
2803	PBN	PolyButylene Naphthalate
2804	PBOH	Please Become Old History
2805	PBT	PolyButylene Terephthalate
2806	PBX	Private Branch eXchange (company phone system)
2807	pC	picocoulomb
2808	PCAS	Planet-Crossing Asteroid Survey
2809	PCB	see entry
2810	PCCB	Porsche Ceramic Composite Brake
2811	PCCIP	President's Commission on Critical Infrastructure Protection
2812	PCE	PerChlorEthylene
2813	PCIe	Peripheral Component Interconnect Express (computer bus)
2814	PCL	Passive Coherent Location
2815	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2816	PCN	Pitcairn Islands (ISO 3166 trigram)
2817	PCPI	Physician Consortium for Performance Improvement (AMA)
2818	PCR	Polymerase chain reaction
2819	PCSSD	Pulaski County Special School District
2820	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2821	Pd	Palladium
2822	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2823	PDL	Pure Dumb Luck (Texan punk band)
2824	PDN	Pull-Down Network
2825	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2826	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2827	PE	Professional Engineer
2828	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2829	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2830	PEEK	PolyEtherEtherKetone
2831	PEET	Partnerships for Enhancing Expertise in Taxonomy
2832	PEK	PolyEtherKetone
2833	PEPFAR	President's Emergency Plan For AIDS Relief
2834	PER	Peru (ISO 3166 trigram)
2835	perl	usually lower case Practical Extraction and Report Language
2836	PES	PolyEtherSulfone
2837	PEST	UK Public Engagement with Science and Technology
2838	PETE	PolyEthyleneTErephthalate
2839	PETP	PolyEthyleneTerePhthalate
2840	pF	picofarad
2841	PFD	Permanent Fund Dividend = personal flotation device
2842	PFE	Permanent Forest Estate
2843	PfP	Partnership for Peace
2844	Pg	petagram
2845	pg	picogram
2846	PGCE	Postgraduate Certificate in Education
2847	PGD	Pre-implantation Genetic Diagnosis
2848	PGENI	Pharmaco-Genetics for Every Nation Initiative
2849	PGH	Pre-implantation Genetic Haplotyping
2850	PGM	Precision-Guided Munition
2851	PGP	Pretty Good Privacy
2852	PHL	Philippines (ISO 3166 trigram)
2853	PHQ	Patient Health Questionnaire
2854	Pi	Pebi
2855	PIB	PolyIsoButylene
2856	PIC	Person In Charge
2857	PICNIC	Problem In Chair Not In Computer
2858	PICS	Private Investment Capital Subscription
2859	PIF	Partners in Flight
2860	PIG	Pipeline Inspection Gauge
2861	PIN	Personal Identification Number
2862	PINF	People In Need Foundation (Czech charitable organisation)
2863	PIPA	Program on International Policy Attitudes
2864	PIR	Priority Intelligence Requirement
2865	PIRA	Provisional Irish Republican Army
2866	PIREPS	Pilot Reports
2867	PITA	Pain In The Ass
2868	PJ	petajoule
2869	pJ	picojoule
2870	PJHQ	Permanent Joint Headquarters
2871	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2872	PKI	Public Key Infrastructure (cryptography)
2873	PKU	Phenylketonuria
2874	pL	picolitre
2875	PLAID	Precision Location and Identification
2876	PLB	Personal Locator Beacon
2877	PLC	Public Limited Company (British)
2878	PLCC	Plastic Leaded Chip Carrier (electronics)
2879	PLD	Probable Line of Deployment
2880	PLEBS	People Lacking Everyday Basic Skills
2881	PLF	Parachute Landing Fall
2882	PLIF	Planar Laser-Induced Fluorescence
2883	PLL	Phase-Locked Loop (electronics)
2884	PLM	Polarized Light Microscope/Microscopy
2885	PLMBA	Phospholipid Bilayer Microarray
2886	Pln	Platoon
2887	PLO	Palestine Liberation Organization
2888	PLOKTA	Press Lots Of Keys To Abort
2889	PLP	Platonic Life Partner
2890	PLUTO	Pipe Line Under The Ocean
2891	PLW	Palau (ISO 3166 trigram)
2892	pm	picometre
2893	PMC	Primary Motor Cortex
2894	PMI	Positive Material Identification
2895	PMID	PubMed Identifier
2896	PMMA	PolyMethylMethAcrylate
2897	PMS	Premenstrual Syndrome
2898	PMSL	Piss Myself Laughing (Internet shorthand)
2899	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
2900	pN	piconewton
2901	PNAC	Project for the New American Century
2902	PNVS	Pilot Night Vision Sensor
2903	Po	Polonium
2904	PO	Post Office
2905	PO	Purchase Order
2906	POCD	Post-Operative Cognitive Dysfunction
2907	pod	Plain Old Documentation
2908	POFF	Plain Old Flat File
2909	POGO	Project On Government Oversight
2910	POI	Program Of Instruction
2911	POK	Plane Of Knowledge
2912	POLAD	Political Advice
2913	POMDP	Partially observable Markov decision process
2914	PooS	Poo Sniffer (Internet shorthand)
2915	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
2916	POSH	Port Outbound Starboard Home (alleged)
2917	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
2918	POT	Plane Of Tranquility
2919	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
2920	POTUS	President of the United States
2921	POV	Point of view
2922	POW	Prisoner of war
2923	PPASC	(U.S.) Plans and Program Analysis Support Center
2924	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
2925	PPLI	Precise Participant Location & Identification
2926	PPM	Project Planning and Management
2927	PPO	PolyPhenylene Oxide
2928	PPQN	Pulses Per Quarter Note (ditto)
2929	PPQT	Pre-Production Qualification Test
2930	PPV	Pay-per-view
2931	Pr	Pastor, Priest
2932	PR	Public Relations
2933	Prb	Presbyter
2934	PRBO	Point Reyes Bird Observatory
2935	PRC	People's Republic of China
2936	PRD	CERDEC Product Realization Directorate
2937	PRFG	Partial Fog (METAR Code)
2938	PRI	Puerto Rico (ISO 3166 trigram)
2939	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
2940	PRM	Personnel iness Management
2941	PRY	Paraguay (ISO 3166 trigram)
2942	Ps	petasecond
2943	pS	picosiemens
2944	PSG	Pacific Seabird Group
2945	PSI	Portable Source Initiative
2946	PSI	Pounds per square inch
2947	PSS	Personnel System Support
2948	PST	Pacific Standard Time (UTC-8 hours)
2949	PSU	Pennsylvania State University
2950	PsyOp	Psychological Operations
2951	pT	picotesla
2952	Pt	Platinum
2953	PTA	Parent-Teacher Association
2954	PTAL	Public Transport Accessibility Level
2955	PTES	People's Trust for Endangered Species
2956	PTFE	PolyTetraFluoroEthylene
2957	PTI	Pardon the Interruption
2958	PTSD	Post-Traumatic Stress Disorder
2959	Pu	Plutonium
2960	Pub	Publication
2961	PUG	PET Users Group
2962	PUN	Pull-Up Network
2963	PUP	Pull-Up Point
2964	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
2965	PV	petavolt
2966	pV	picovolt
2967	PvE	Player versus Environment
2968	PvP	Player versus Player
2969	PVR	Personal Video Recorder
2970	PvZ	Plants vs. Zombies
2971	PW	Palau (postal symbol; ISO 3166 digram)
2972	pW	picowatt
2973	PWA	Pirates With Attitude
2974	PWBA	Pension and Welfare Benefits Administration
2975	PWC	PieceWise Constant (describing a mathematical function)
2976	PwC	PricewaterhouseCoopers (international accounting firm)
2977	PWL	PieceWise Linear (describing a mathematical function)
2978	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
2979	PWR	Pressurized Water Reactor
2980	PX	Post eXchange
2981	PYF	French Polynesia (ISO 3166 trigram)
2982	PYMWYMI	Put Your Money Where Your Mouth Is
2983	Q1	First Quarter
2984	Q2	Second Quarter
2985	Q3	Third Quarter
2986	Q4	Fourth Quarter
2987	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
2988	Qantas	Queensland And Northern Territory Aerial Services
2989	QAT	Qatar (ISO 3166 trigram)
2990	QB	Quarterback (football)
2991	QCD	Quantum ChromoDynamics
2992	QDR	Quadrennial Defense Review
2993	QEH	Queen Elizabeth's Hospital
2994	QK	Air Canada Jazz (IATA airline designator)
2995	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
2996	QPS	Quark Publishing System
2997	QSCAT	Quick Scatterometer satellite
2998	QSL	Québec Sign Language
2999	QSO	Quasi-Stellar Object
3000	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3001	Quasar	Quasi-stellar radio source
3002	QUB	Queen's University Belfast
3003	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3004	QZ	Awair (IATA airline designator)
3005	R2I	Resistance to Interrogation
3006	RA	Radio Australia
3007	Ra	Radium
3008	RAAF	Royal Australian Air Force
3009	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3010	RACK	Risk Aware Consensual Kink (SM phrase)
3011	Racon	RAdar beaCON
3012	RADA	Royal Academy of Dramatic Art
3013	Radar	Radio Detection And Ranging
3014	RadB	Rad51/Dmc1 homologous protein
3015	RADb	Routing Assets Data Base
3016	RADC	Region Air Defence Commander
3017	RAE	UK Royal Aircraft Establishment (-1991)
3018	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3019	RAM	Royal Air Maroc
3020	Ramark	RAdar MARKer
3021	RAOC	Rear Area Operation Centre
3022	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3023	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3024	RATELO	Radiotelephone Operator
3025	Rb	Rubidium
3026	RB	Running Back (football)
3027	RBI	Runs Batted In
3028	RC	see entry
3029	RCAF	Royal Canadian Air Force
3030	RCC	Rescue Co-ordination Centre
3031	RCCO	Royal Canadian College of Organists
3032	RCHA	Royal Canadian Horse Artillery (regiment)
3033	RCMP	Royal Canadian Mounted Police
3034	RD	Radio Disney
3035	RDD	Radiological Dispersion Device
3036	RDM	Remotely Delivered/Deliverable Mine
3037	RDT	Remote Digital Terminal
3038	RDV	Remote Detection Vehicle
3039	Re	Rhenium
3040	RE	Royal Engineers
3041	REACT	Remote Electronically Activated Control Technology
3042	REAM	Retired Educators Association of Minnesota
3043	RECCE	Reconnaissance
3044	REEF	Reef Environmental Education Foundation
3045	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3046	REME	Royal Electrical and Mechanical Engineers
3047	RERC	Rehabilitation Engineering Research Center
3048	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3049	REU	Réunion (ISO 3166 trigram)
3050	Rf	Rutherfordium
3051	RFD	Request for Documentation
3052	RFE	Request for Evaluation
3053	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3054	RFF	Right of First Refusal (legal term)
3055	RFID	Radio Frequency IDentification
3056	RFL	Rugby Football League
3057	RFP	Request for Proposal
3058	RFQ	Request for Quotation
3059	RFT	Request for Tender
3060	RFU	Rugby Football Union
3061	RG	Republican Guard
3062	Rg	Roentgenium
3063	RGB	Red Green Blue (colour model)
3064	RGBI	Red Green Blue Intensity (ditto)
3065	Rh	Rhodium
3066	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3067	RHIC	Relativistic Heavy Ion Collider
3068	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3069	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3070	RHU	Replacement Holding Unit
3071	RI	Rhode Island (postal symbol)
3072	RIAA	Recording Industry Association of America
3073	RIBA	Royal Institute of British Architects
3074	RIFA	Red imported fire ant
3075	RILA	Retail Industry Leaders Association
3076	RIMVS	Retinal Imaging Machine Vision System
3077	RINO	Republican In Name Only[1]
3078	RISC	Reduced Instruction Set Computer
3079	RJD	Reduced Julian Day
3080	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3081	RKO	Radio-Keith-Orpheum Pictures
3082	RLP	Recognised [Operating/Operational] Land Picture
3083	RLS	Restless Leg Syndrome
3084	RLY	Rally Point
3085	RM	see separate disambiguation page
3086	RMC	Robert Menzies College
3087	RMDA	Records Management and Declassification Agency
3088	RMP	Recognised [Operating/Operational] Maritime Picture
3089	RN	Radio Netherlands
3090	Rn	Radon
3091	RNA	RiboNucleic Acid
3092	RNAD	Royal Naval Armaments Depot (UK)
3093	RNPS	Radio Network Planning System
3094	RNZ	Radio New Zealand
3095	RNZI	Radio New Zealand International
3096	ROA	Rate Of Ascent
3097	ROE	Rules Of Engagement
3098	ROFLOL	Rolling On the Floor Laughing Out Loud
3099	ROH	Ring of Honor
3100	ROK	Republic of Korea
3101	ROP	Render Output Pipeline
3102	ROPE	Research Opportunity and Performance Evidence
3103	ROS	Reactive Oxygen Species
3104	ROU	Romania (ISO 3166 trigram)
3105	ROV	Remotely Operated Vehicle
3106	ROZ	Restricted Operations Zone
3107	RPA	Regional Plan Association
3108	RPD	Recognition-Primed Decision-making
3109	RPF	Rwandan Patriotic Front
3110	RPL	Reverse Polish Lisp
3111	rpm	revolutions per minute
3112	RPN	reverse Polish notation
3113	rps	revolutions per second
3114	RPV	Remotely Piloted Vehicle
3115	RQ	Puerto Rico (FIPS 10-4 territory code)
3116	RRB	Railroad Retirement Board
3117	RRN	Recurrence Rate Number
3118	RRP	Recurrent Respiratory Papillomatosis
3119	RRS	Racing Rules of Sailing
3120	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3121	RS	Russia (FIPS 10-4 country code)
3122	RSI	Repetitive Strain Injury
3123	RSJ	Rolled Steel Joist (construction)
3124	RSN	Real Soon Now (coined by author Jerry Pournelle)
3125	RSPB	(UK) Royal Society for the Protection of Birds
3126	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3127	RSR	Required Supply Rate
3128	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3129	RSRI	Red Sands Research Institute
3130	RSS	Really Simple Syndication
3131	RTA	Road traffic accident (British)
3132	RTBF	Radio-Télévision belge de la Communauté française
3133	RTF	Rich Text Format
3134	RTFM	the Fucking/Fine Manual
3135	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3136	RTI	Run-Time Infrastructure (Simulation)
3137	RTL	see entry
3138	RTP	Real-time Transport Protocol
3139	RTS	see entry
3140	RTT	Round Trip Timing
3141	RU	Russia (ISO 3166 digram)
3142	Ru	Ruthenium
3143	RUC	Royal Ulster Constabulary
3144	RUS	Russia (ISO 3166 trigram)
3145	RUSI	Royal United Services Institute for Defence Studies
3146	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3147	RWA	Rwanda (ISO 3166 trigram)
3148	RWH	Rain Water Harvesting
3149	RWR	Radar Warning Receiver
3150	RWS	Remote Weapon Station
3151	RX	Receive
3152	SBNO	Standing but not operating (in reference to amusement parks)
3153	SCOTUS	Supreme Court of the United States
3154	SCROTUS	So-called Ruler of the United States
3155	SDHC	Secure Digital High Capacity
3156	SDXC	Secure Digital eXtended Capacity
3157	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3158	SGOTUS	Second Gentleman of the United States
3159	SHO	Showtime (see also sho.com)
3160	SIRI	Service Interface for Real Time Information
3161	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3162	SLOTUS	Second Lady of the United States (the vice president's wife)
3163	SoCon	Southern Conference (U.S. college sports)
3164	STB	Surface Transportation Board[2]
3165	SWAC	Southwestern Athletic Conference
3166	SWAN	System for Wearable Audio Navigation
3167	SWAT	Special Weapons And Tactics
3168	SWF	Single White Female
3169	Ta	Tantalum
3170	TAACOM	U.S. Theater Army Area Command
3171	TAADCOORD	Theatre Army Air Defence Co-ordinator
3172	TAAR	Trace Amine-Associated Receptor
3173	TAC	U.S. Tactical Air Command (1946-1992)
3174	TACAN	Tactical Air Navigation
3175	TACCO	Tactical Coordinator
3176	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3177	TACDAR	Tactical Detection And Reporting
3178	TACSOP	Tactical SOP (Standing Operating Procedure)
3179	TADIL	Tactical Digital Information Link
3180	TAI	Target[ed] Area of Interest
3181	TAJ	Tom and Jerry
3182	TAJT	Tom and Jerry Tales
3183	TALES	Technical Advice and Lexicon for Enabling Simulation
3184	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3185	TANP	Terrain-Aware Network Planner
3186	TANSTAAFL	There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress)
3187	TAPPS	Texas Association of Private and Parochial Schools
3188	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3189	TAS	Tasmania (postal symbol)
3190	TASER	Thomas A. Swift's Electric Rifle
3191	TASM	Tactical Air-to-Surface Missile
3192	TAT	Tourism Authority of Thailand
3193	TATP	TriAcetone TriPeroxide
3194	TATT	Tired All The Time (medical diagnosis in-joke)
3195	Tb	Terbium
3196	TB	Tuberculosis
3197	TBA	to be announced
3198	TBBPA	TetraBromoBisPhenol-A
3199	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3200	TBF	to be fair
3201	TBH	To Be Honest
3202	TBL	Turkish Basketball League
3203	TBS	Turner Broadcasting System
3204	TBT	Tributyltin
3205	Tc	Technetium
3206	TCAA	Top Counter-Assault Agents
3207	TCAS	Traffic Collision Avoidance System
3208	TCCCS	Tactical Command,Control and Communication System
3209	TCD	Chad (ISO 3166 trigram)
3210	TCHD	Truck Cargo Heavy Duty
3211	TCL	Tool Command Language
3212	TCM	Turner Classic Movies
3213	TCU	Texas Christian University
3214	TCW	Tasty Coma Wife
3215	TCWMS	Tele-Center Workforce Management System
3216	TDA	The Disney Afternoon
3217	TDL	Tactical Data Link
3218	TDM	Time-Division Multiplexing
3219	TDMA	Time Division Multiple Access
3220	TDP	Technology Demonstration Programme
3221	TDRS	Tracking Data and Relay Satellite
3222	Te	Tellurium
3223	TEAL	Tasman Empire Airways Limited
3224	Team	Together everyone achieves more
3225	TEAMS	The East African Marine System (fiber optic cable)
3226	TED	Technology Entertainment Design prize
3227	TENCAP	Tactical Exploitation of National Capabilities
3228	TERS	Tactical Event Reporting System
3229	TES	Tactical Event System
3230	TEST	Thesaurus of Engineering and Scientific Terms
3231	TEU	Twenty-foot equivalent unit (cargo capacity)
3232	TeVeS	Tensor Vector Scalar theory
3233	TFMPP	Trifluorophenylmethylpiperazine
3234	TFR	Total Fertility Rate
3235	TFT	Thin-Film Transistor
3236	Tg	Teragram
3237	TG	Togo (ISO 3166 digram)
3238	TGO	Togo (ISO 3166 trigram)
3239	Th	Thorium
3240	THA	Thailand (ISO 3166 trigram)
3241	THAAD	Terminal High Altitude Area Defence
3242	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3243	THEL	Tactical High Energy Laser ACTD
3244	THG	Tetrahydrogestrinone
3245	TIA	Total Information Awareness initiative
3246	TIA	Transient Ischemic Attack
3247	TIALD	Thermal Imaging and Airborne Laser Designation
3248	TIBS	Tactical Information Broadcast System
3249	TIC	Troops In Contact
3250	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3251	TINC	There Is No Cabal
3252	TIP	Thermal Identification Panel
3253	tits	Toes in the Sand
3254	TJD	Truncated Julian Day
3255	TJK	Tajikistan (ISO 3166 trigram)
3256	TKL	Tokelau (ISO 3166 trigram)
3257	TKM	Turkmenistan (ISO 3166 trigram)
3258	Tl	Thallium
3259	TLA	Three-Letter Abbreviation/Acronym
3260	TLAM	Tomahawk Land Attack Missile
3261	TLATOJL	The Life and Times of Juniper Lee
3262	TLPM	T1 Line Performance Monitor
3263	Tm	Terametre
3264	TMAP	Texas Medication Algorithm Project
3265	TMC	The Movie Channel
3266	TMD	Theatre Missile Defence
3267	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3268	TMI	Too Much Information
3269	TMJ	TemporoMandibular Joint (syndrome)
3270	TMNT	Teenage Mutant Ninja Turtles
3271	TMPG	Transparent Multi-Platform Gateway
3272	TMR	Twin Main Rotors (helicopter type)
3273	TMS	Transcranial Magnetic Stimulation
3274	TMT	Thirty Meter Telescope
3275	TMTOWTDI	There's Than One Way To Do It (from Perl)
3276	TNA	Total Nonstop Action Wrestling
3277	TNO	Trans-Neptunian Object
3278	TOBS	Time of OBServation
3279	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3280	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3281	TOGS	Thermal Observation Gunnery Sight
3282	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3283	TON	Tonga (ISO 3166 trigram)
3284	TOS	Tape Operating System,Terms of service,The Original Series,used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System
3285	TOT	Time On Target
3286	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3287	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3288	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3289	TPI	The point is
3290	TPO	Thrombopoietin
3291	TPS	The Pennington School
3292	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3293	TQ	Top Qualifier (similar to Pole Position in car racing)
3294	TRA	Technology iness Assessment
3295	TRAC	(U.S. Army) TRADOC Analysis Center
3296	TRACON	Terminal Radar Approach Control
3297	TRADOC	(U.S. Army) Training and Doctrine Command
3298	TRANSCOM	U.S. Transportation Command
3299	TRAP	Tactical Receive equipment and related Applications
3300	TRASANA	TRADOC Systems Analysis Agency
3301	TRD	Towed Radar Decoy
3302	TRIGAT	Third Generation Antitank (missile)
3303	TRL	Technology readiness level
3304	Trp	Troop
3305	TRU	Transuranic
3306	TRUEX	Training in Urban Environment Exercise
3307	TRW	Thompson Ramo Wooldridge Inc.
3308	Ts	Terasecond
3309	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3310	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3311	TSEC	Transmission Security Encryption Code
3312	TSL	Transportation Security Laboratory
3313	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3314	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3315	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3316	TSR	Terminate and Stay Resident
3317	TSSIA	The Subject Says It All
3318	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3319	TTCT	Torrance Tests of Creative Thinking
3320	TTFN	Ta Ta For Now
3321	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3322	TTO	Trinidad and Tobago (ISO 3166 trigram)
3323	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3324	TTTEAF	Thomas the Tank Engine and Friends
3325	TTY	TeleTYpewriter (Printer)
3326	TTYL	To You Later (Internet slang)
3327	TTZ	Tetrazolium
3328	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3329	TUC	Trades Union Congress
3330	TUG	TeX Users Group
3331	TUI	Text-based user interface (cf. CLI),among other uses
3332	TUN	Tunisia (ISO 3166 trigram)
3333	TUNS	Technical University of Nova Scotia
3334	TUR	Turkey (ISO 3166 trigram)
3335	TUSK	Tank Urban Survival Kit
3336	TUV	Tuvalu (ISO 3166 trigram)
3337	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3338	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3339	TVA	Tennessee Valley Authority
3340	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3341	TVR	TreVor (Wilkinson) Racing
3342	TVS	Tornado vortex signature
3343	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3344	TWAIN	Technology Without An Interesting Name
3345	TWE	Trans World Entertainment
3346	TWI	The Welding Institute
3347	TWIP	Take What Insurance Pays,When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference
3348	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3349	TWP	Technical Working Paper
3350	TWS	Thermal Weapon Sight,Track While Scan
3351	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3352	TXV	Thermostatic Expansion Valve
3353	TYT	Take Your Time,Internet chat abbreviation
3354	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3355	TZA	Tanzania (ISO 3166 trigram)
3356	TZC	Tetrazolium chloride
3357	U	Uranium
3358	UA	Ukraine (ISO 3166 digram) Unit of Action
3359	UAAP	University Athletic Association of the Philippines
3360	UAB	University of Alabama at Birmingham
3361	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3362	UBC	United Baptist Church,University of British Columbia
3363	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3364	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3365	UCBSA	United Cricket Board of South Africa
3366	UCF	University of Central Florida
3367	UCLA	University of California at Los Angeles
3368	UCLES	University of Cambridge Local Examinations Syndicate
3369	UCR	University of California at Riverside
3370	UCR	University of Costa Rica
3371	UCS	Union of Concerned Scientists
3372	UCSB	University of California at Santa Barbara
3373	UCSD	University of California at San Diego
3374	UDAS	Uppsala-DLR Asteroid Survey
3375	UDDI	Universal Description,Discovery and Integration
3376	UDTS	Uppsala-DLR Trojan Survey
3377	UE	Unit of Employment
3378	UEFA	Union of European Football Associations
3379	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3380	UFC	Ultimate Fighting Championship
3381	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3382	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3383	UGA	Uganda (ISO 3166 trigram)
3384	UGV	Unmanned Ground Vehicle
3385	UHF	Ultra High Frequency
3386	UHMW	Ultra-High Molecular Weight
3387	UHRB	Ultra-High Resolution Building (simulation)
3388	UIC	University of Illinois at Chicago
3389	UID	User ID
3390	UIUC	University of Illinois at Urbana-Champaign
3391	UJTL	Universal Joint Task List
3392	UKIP	United Kingdom Independence Party
3393	UKR	Ukraine (ISO 3166 trigram)
3394	UL	Underwriters Laboratories
3395	ULF	Ultra Low Frequency
3396	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3397	UMCP	Unit Maintenance Collection Point
3398	UMES	University of Maryland Eastern Shore
3399	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3400	UMIST	University of Manchester Institute of Science and Technology
3401	UMTS	Universal Mobile Telecommunications System
3402	UN	United Nations
3403	UNABOM	University and airline bomber (FBI case name)
3404	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3405	UNAMSIL	United Nations Mission in Sierra Leone
3406	UNCF	United Negro College Fund
3407	UNCLOS	United Nations Convention on the Law of the Sea
3408	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3409	UNCTAD	United Nations Conference on Trade and Development
3410	UNDCP	United Nations Drug Control Programme
3411	UNDE	(i/a) Union of National Defence Employees (Canada)
3412	UNDP	United Nations Development Programme
3413	UNEP	United Nations Environment Programme
3414	UNFCCC	United Nations Framework Convention on Climate Change
3415	UNFICYP	United Nations Peacekeeping Force in Cyprus
3416	UNGEGN	United Nations Group of Experts on Geographical Names
3417	UNHCR	United Nations High Commission (er) for Refugees
3418	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3419	UNICRI	United Nations Interregional Crime and Justice Research Institute
3420	UNIDO	United Nations Industrial Development Organization
3421	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3422	UNMIK	United Nations Interim Administration Mission in Kosovo
3423	UNOSOM	United Nations Operations in Somalia
3424	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3425	UNRISD	United Nations Research Institute for Social Development
3426	UNSM	Union of Nova Scotian Municipalities
3427	UNTAC	United Nations Transitional Authority in Cambodia
3428	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3429	UNU	United Nations University
3430	UPdM	Università Popolare della Multimedialità
3431	UPI	United Press International
3432	UPN	United Paramount Network
3433	UPU	Universal Postal Union
3434	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3435	URD	User Requirements Document
3436	URY	Uruguay (ISO 3166 trigram)
3437	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3438	USAF	United States Air Force
3439	USAFSPC	U.S. Air Force Space Command
3440	USAID	United States Agency for International Development
3441	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3442	USAREUR	United States Army Europe
3443	USB	Universal Serial Bus
3444	USCG	United States Coast Guard
3445	USDA	United States Department of Agriculture
3446	USDI	United States Department of the Interior
3447	USDOE	United States Department of Energy
3448	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3449	USEC	United States Enrichment Corporation
3450	USFL	United States Football League
3451	USFWS	United States Fish and Wildlife Service
3452	USGS	United States Geological Survey
3453	USIA	United States Information Agency
3454	USJFCOM	United States Joint Forces Command
3455	USMC	United States Marine Corps
3456	USMNT	United States men's national (soccer) team
3457	USN	United States Navy
3458	USNB	United States Naval Base
3459	USNG	United States National Grid
3460	USNH	United States Naval Hospital
3461	USNI	United States Naval Institute
3462	USNO	U.S. Naval Observatory
3463	USNOFS	United States Naval Observatory Flagstaff Station
3464	USNP	United States Newspaper Program
3465	USNR	United States Navy Reserve
3466	USNS	United States Naval Ship
3467	USNZ	University Sport New Zealand
3468	USPS	United States Postal Service
3469	USPTO	United States Patent and Trademark Office
3470	USS	United States ship (sometimes meaningless; see Star Trek)
3471	USSPACECOM	United States Space Command
3472	USSR	Union of Soviet Socialist Republics
3473	UST	Underground Storage Tank
3474	USTRANSCOM	United States Transportation Command
3475	USWNT	United States women's national (soccer) team
3476	UT	Universal Time
3477	UTEP	University of Texas at El Paso (pronounced you-tep)
3478	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3479	UUA	Unitarian Universalist Association
3480	UUID	Universally Unique Identifier (see also GUID)
3481	UUV	Unmanned Underwater Vehicle
3482	UW	University of Washington
3483	UWO	University of Western Ontario
3484	UWT	Under Water Telephone
3485	UWTG	Under Water Tug
3486	UWW	United World Wrestling
3487	UXO	Unexploded Ordnance
3488	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3489	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3490	UZB	Uzbekistan (ISO 3166 trigram)
3491	VACIS	Vehicle And Container Inspection System
3492	VACIS	Victorian Ambulance Clinical Information System
3493	VANOS	Variable Nockenwelle System
3494	VAO	Vienna Art Orchestra
3495	VBA	Visual Basic for Applications
3496	vCJD	Variant Creutzfeldt-Jakob Disease
3497	VCNO	(U.S.) Vice Chief of Naval Operations
3498	VCofS	Vice Chief of Staff
3499	VCR	Video cassette recorder
3500	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3501	VDFS	VisualSVN Distributed File System (VDFS)
3502	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3503	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3504	VEN	Venezuela (ISO 3166 trigram)
3505	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3506	VfD	s for deletion (used in Wikipedia)
3507	VFM	Value For Money
3508	VFMO	Very Fast Moving Object (astronomy)
3509	VFT	Virtual Function Table
3510	VFW	Veterans of Foreign Wars
3511	VG	British Virgin Islands (ISO 3166 digram)
3512	VGB	British Virgin Islands (ISO 3166 trigram)
3513	VH1	Video Hits One
3514	VHF	Very High Frequency
3515	VIA	Versatile Interface Adapter
3516	VIDS	Visual Information Display System
3517	VII	7 (in Roman numerals)
3518	VIII	8 (in Roman numerals)
3519	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3520	VIP	Very Important Person
3521	VISCII	VIetnamese Standard Code for Information Interchange
3522	VIT	Vellore Institute of Technology
3523	VIVO	Video In Video Out
3524	VJ	Video Jockey
3525	VLAD	Vertical Line Array DIFAR
3526	VLBA	Very Long Baseline Array
3527	VLF	Very Low Frequency
3528	VLIW	Very Long Instruction Word
3529	VLPFC	VentroLateral PreFrontal Cortex
3530	VLPMC	VentroLateral PreMotor Cortex
3531	VLSI	Very-large-scale integration
3532	VM	Vietnam (FIPS 10-4 country code)
3533	VMF	Marine Fighting Squadron of the United States Marine Corps
3534	VMF	Variable Message Format
3535	VMN	VentroMedial Nucleus (neurophysiology)
3536	VN	Vietnam (ISO 3166 digram)
3537	VNIR	Visible and Near InfraRed
3538	VNM	Vietnam (ISO 3166 trigram)
3539	VNS	see entry
3540	VOA	Voice of America
3541	VOIP	Voice Over Internet Protocol
3542	VOLT	Visual OpenType Layout Tool
3543	VON	Victorian Order of Nurses
3544	VOR	Voice of Russia
3545	VOX	Voice Operated oscillator
3546	VPOTUS	Vice President of the United States
3547	VPN	Virtual Private Network
3548	VR	Virtual Reality
3549	VRSG	Virtual Reality Scene Generator
3550	VSHORAD	Very Short Range Air Defence
3551	VSO	Voluntary Services Overseas
3552	VSR	Very Special Relativity
3553	VTC	Video Tele-Conference
3554	VTEC	Variable valve Timing and Electronic lift Control
3555	VTOL	Vertical Take-Off & Landing
3556	VUB	Vrije Universiteit Brussel (Belgian university)
3557	VUT	Vanuatu (ISO 3166 trigram)
3558	VVAF	Vietnam Veterans of America Foundation
3559	VW	Volkswagen
3560	VZ	Verizon Communications (NYSE code)
3561	W3C	World Wide Web Consortium
3562	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3563	WAAF	Women's Auxiliary Air Force (World War II UK)
3564	WACC	Weighted Average Cost of Capital (accounting)
3565	WACS	What-A-Cartoon! Show
3566	WAD	Weapons Alert Designator
3567	WAGGGS	World Association of Girl Guides and Girl Scouts
3568	WAL	see entry
3569	WAN	Wide area network
3570	WAP	Wireless Application Protocol
3571	WAPIMA	What a pain in my ass
3572	WAR	With All Respect
3573	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3574	WAYP	White And Yellow Pages
3575	Wb	Weber
3576	WBC	World Boxing Council
3577	WBE	Work Breakdown Element
3578	WBO	World Boxing Organization
3579	WCBO	World Chess Boxing Organisation
3580	WCBP	World Center for Birds of Prey
3581	WCL	World Confederation of Labour
3582	WCW	World Championship Wrestling
3583	WDIN	Wildlife Disease Information Node
3584	WDWR	Walt Disney World Resort
3585	WEBS	Weapon Effectiveness Battle Simulation
3586	WEC	World Extreme Cagefighting
3587	WEEE	Waste Electrical and Electronic Equipment
3588	WEF	World Economic Forum
3589	WEM	West Edmonton Mall
3590	WEU	Western European Union
3591	WEZ	Weapon Engagement Zone
3592	WF	Wallis and Futuna Islands (ISO 3166 digram)
3593	WFC	Women's Forage Corps (World War II UK)
3594	WFD	Weapon of Focused Destruction
3595	WFF	Wallops Flight Facility
3596	WFI	Water for Injection
3597	WFH	Working from home
3598	WFP	World Food Program
3599	WFZ	Weapons Free Zone
3600	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3601	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3602	WHI	Women's Health Initiative
3603	WHIP	Walks plus hits per inning pitched
3604	WHO	World Health Organisation
3605	WHS	(U.S.) Washington Headquarters Services
3606	WIIFM	What's in it for me?
3607	WIP	Work In Progress
3608	WIPO	World Intellectual Property Organization
3609	WIPP	[Nuclear] Waste Isolation Pilot Plant
3610	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3611	WKYP	Will Keep You Posted
3612	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3613	WLB	Women's Land Brigade (World War II Canada)
3614	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3615	WLOG	Without Loss Of Generality (see WOLOG)
3616	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3617	WMANUS	West Midlands Area National Union of Students
3618	WMD	World Movement for Democracy
3619	WMI	Wildlife Management Institute
3620	WMO	World Meteorological Organization
3621	WNA	World Nuclear Association
3622	WNF	Will Not Fix
3623	WNIT	Women's National Invitation Tournament
3624	WNW	West North-West
3625	WO	Warrant Officer
3626	WOF	Width of Fabric
3627	WOFT	Waste Of Fucking Time
3628	WOFTAM	Waste Of Fucking Time And Money
3629	WOI	Wheels Of Italy
3630	WOM	Write Only Memory
3631	WOS	Wilson Ornithological Society
3632	WOT	Waste Of Time
3633	WP	White Phosphorus (ammunition)
3634	WPB	War Production Board during World War II
3635	WPE	World Pork Expo
3636	WPK	Wider Peacekeeping
3637	WR	Wide Receiver (football)
3638	WRAC	Women's Royal Army Corps (World War II UK)
3639	WRAIR	Walter Reed Army Institute of Research
3640	WRBWWRM	We Best What We Most
3641	WRC	World Rally Championship
3642	WRC	World Religions Conference
3643	WRNG	Warning
3644	WRS	Worldwide Reference System
3645	WRT	NHS Workforce Review Team
3646	WRT	The Linksys routers whose model name start with 'WRT'
3647	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3648	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3649	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3650	WRT	Wireless Ronin Technologies (digital signage)
3651	WRT	World Rally Team
3652	WRT	Writer Response Theory
3653	WSC	Weapon System Catalogue
3654	WSDL	Web Services Description Language
3655	WSJ	(The) Wall Street Journal
3656	WSROC	Western Sydney Regional Organisation of Councils
3657	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3658	WSTC	Women Signallers Territorial Corps (World War II UK)
3659	WSW	West South-West
3660	WTC	World Trade Center
3661	WTF	What the fuck?; also What a Terrible Failure (android)
3662	WTFH	What The Fucking Hell
3663	WTH	What the Hell
3664	WTO	World Trade Organization
3665	WUBU2	What you been up to
3666	WV	West Virginia (postal symbol)
3667	WVA	World Veterinary Association
3668	WVIAC	West Virginia Intercollegiate Athletic Conference
3669	WVR	Women's Volunteer Reserve (World War II UK)
3670	WVSC	Women's Volunteer Service Corps (World War II Canada)
3671	WVU	West Virginia University
3672	WW	see entry
3673	WWE	World Wrestling Entertainment
3674	WWI	World War I
3675	WWII	World War II
3676	WWIII	World War III
3677	WWJD	What would Jesus do?
3678	WWS	Wheaton Warrenville South High School
3679	WWWF	World Wide Wrestling Federation
3680	WXO	Weather [Executive] Officer
3681	WY	Wyoming (postal symbol)
3682	WZ	Swaziland (FIPS 10-4 country code)
3683	XBML	eXtended Business Modelling Language
3684	XC	Ninety (in Roman numerals)
3685	XCBL	XML Common Business Library
3686	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3687	Xe	Xenon
3688	XFA	XML Forms Architecture
3689	XFC	Xtreme Fighting Championships
3690	XFD	Fighter aircraft made by Douglas
3691	Xfe	X File Explorer
3692	XFF	X-Forwarded-For
3693	XFG	Exfoliation glaucoma
3694	XFR	Automobile made by Jaguar
3695	XFT	X FreeType interface library
3696	XG	Automobile made by Hyundai
3697	XGA	Extended Graphics Array
3698	XGP	Extreme Game Player
3699	XHTML	eXtensible Hypertext Markup Language
3700	XI	Eleven (in Roman numerals)
3701	XII	Twelve (in Roman numerals)
3702	XIII	Thirteen (in Roman numerals)
3703	XIV	Fourteen (in Roman numerals)
3704	XIX	Nineteen (in Roman numerals)
3705	XJS	Automobile made by Jaguar
3706	XKB	X keyboard extension
3707	XKE	Automobile made by Jaguar
3708	XKR	Automobile made by Jaguar
3709	XML	eXtensible Markup Language
3710	XMSF	eXtensible Modelling and Simulation Framework
3711	XNA	X-No-Archive,Xeno Nucleic Acid
3712	XNC	X Northern Captain
3713	XNU	X is Not Unix
3714	XP	eXperience Point (role-playing games)
3715	XQJ	XQuery API for Java™
3716	XRAY	X-Ray
3717	XRML	eXtensible Rights Markup Language
3718	XS	Xiaolin Showdown
3719	XSL	eXtensible Style Language
3720	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3721	XUL	XML User Interface Language
3722	XV	Fifteen (in Roman numerals)
3723	XVI	Sixteen (in Roman numerals)
3724	XVII	Seventeen (in Roman numerals)
3725	XVIII	Eighteen (in Roman numerals)
3726	XWF	Xcitement Wrestling Federation
3727	XX	Twenty (in Roman numerals)
3728	Xyl	Xylobium
3729	XZN	Triple square screw driver
3730	y	Yocto-
3731	Y2K	Year Two Thousand
3732	yA	Yoctoampere
3733	Ya	Yottayear
3734	YaBPr	Yet another Brother Pat rant
3735	YABSLAG	Yet another boy singing like a girl
3736	YAC	Youth-Adult Committee
3737	YAFLA	Yet Another Five Letter Abbreviation
3738	YAP	Young Aspiring Professional
3739	YB	Youcef Benzouada (Southern Algerian name)
3740	Yb	Ytterbium
3741	yC	Yoctocoulomb
3742	YC	Yottacoulomb
3743	YDS	Yosemite Decimal System (climbing)
3744	YE	Yemen (ISO 3166 digram)
3745	YEM	Yemen (ISO 3166 trigram)
3746	yF	Yoctofarad
3747	YF	Yottafarad
3748	yg	Yoctogram
3749	Yg	Yottagram
3750	YGCO	Yamaneko Group of Comet Observers
3751	Ygo	Yu-Gi-Oh!
3752	yH	Yoctohenry
3753	YH	Yottahenry
3754	YHBT	You Have Been Trolled
3755	YHII	You Have It Inside
3756	YHS	Ya Hoor sur!
3757	Yi	Yobi
3758	Yippie	Youth International Party + suffix
3759	yJ	Yoctojoule
3760	YJ	Yottajoule
3761	yK	Yoctokelvin
3762	YK	Yottakelvin
3763	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3764	yL	Yoctolitre
3765	YL	Yottalitre
3766	ym	Yoctometre
3767	Ym	Yottametre
3768	YMMD	You Make My Day
3769	yN	Yoctonewton
3770	YN	Yottanewton
3771	YOLO	You Only Live Once
3772	YPA	Yards per Pass Attempt (football statistic)
3773	YPIO	Your Problem Is Obvious
3774	YPO	Young Presidents' Organization
3775	ys	Yoctosecond
3776	yS	Yoctosiemens
3777	Ys	Yottasecond
3778	YS	Yottasiemens
3779	YSI	Young Scots for Independence
3780	yT	Yoctotesla
3781	YTD	Year-To-Date
3782	YTM	Yield to Maturity
3783	YTS	Youth Training Scheme
3784	YTT	Yoshi Topsy-Turvy
3785	Yuppie	Young Urban Professional + suffix
3786	yV	Yoctovolt
3787	YV	Yottavolt
3788	yW	Yoctowatt
3789	YW	Yottawatt
3790	YYH	YuYu Hakusho
3791	z	Zepto
3792	Z	Zetta
3793	zA	Zeptoampere
3794	ZAF	South Africa (ISO 3166 trigram)
3795	ZAMS	Zero age main sequence
3796	ZAS	Zylinder Abschaltung System
3797	ZBT	Zero-Balance Transfer (accounting)
3798	zC	Zeptocoulomb
3799	ZC	Zettacoulomb
3800	ZCM	(n) ZENworks Configuration Management
3801	ZCMK	Zone Control Master Key
3802	ZCU	Zimbabwe Cricket Union
3803	\a	Atto-