PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
2	0D	obvious deed
3	1AM	Air Mechanic 1st Class
4	1D	One-Dimensional
5	2AM	Air Mechanic 2nd Class
6	2D	Two-dimensional
7	2LA	Two Letter Acronym
8	2Lt	2nd Lieutenant
9	3AM	Air Mechanic 3rd Class
10	3D	Three-Dimensional
11	3G	Third-generation mobile telephone system
12	3i	Investors In Industry (venture capitalists)
13	3M	Minnesota Mining and Manufacturing Company
14	4G	Fourth-generation mobile telephone system
15	4WD	Four-wheel drive
16	5D	Five-Dimensional
17	6D	Six-Dimensional
18	7D	Seven-Dimensional
19	8D	Eight-Dimensional
20	9D	Nine-Dimensional
21	A	Ampere
22	A10	Atlantic 10 Conference
23	A1C	Airman First Class
24	A4	European standard office paper size
25	aA	Attoampere
26	AAA	administration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
27	AAAS	American Association for the Advancement of Science
28	AAAV	Advanced Amphibious Assault Vehicle
29	AADAC	Alberta Alcohol and Drug Abuse Commission
30	AADD	Adult attention deficit disorder
31	AADT	annual average daily traffic
32	AAFES	Army and Air Force Exchange Service
33	AAIS	advanced airborne interceptor simulator
34	AAM	air-to-air missile
35	AAMOF	as a matter of fact
36	AAN	American Academy of Nursing
37	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
38	AAODL	Atmospheric Aerosols and Optics Data Library
39	AAPC	Accounting and Auditing Policy Committee
40	AARP	American Association of Retired Persons (now officially known only by the initials)
41	AASPEM	advanced air-to-air system performance evaluation model
42	AAT	Australian Antarctic Territory
43	AAV	Amphibious Assault Vehicle
44	AAWC	anti-air warfare commander
45	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
46	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
47	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48	ABC	the first three letters of the Latin script known as the alphabet
49	ABC	abstinence, be faithful, condoms
50	ABC	Active Body Control
51	ABC	airway, breathing, circulation
52	ABC	Alcoholic Beverage Commission
53	ABC	alien big cat
54	ABC	always be careful
55	ABC	American-born Chinese
56	ABC	anti-lock brake controller
57	ABC	atomic, biological, chemical
58	ABCS	(U.S.) Army Battle Command System
59	ABET	Accreditation Board for Engineering and Technology
60	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
61	ABGI	Addington-Barker Group International
62	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
63	ABL	American Basketball League
64	ABLE	AirBorne Law Enforcement (police air support unit)
65	ABMC	American Battle Monuments Commission
66	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67	ABPI	Association of the British Pharmaceutical Industry
68	ABRSM	Associated Board of the Royal Schools of Music
69	ABS	acrylonitrile butadiene styrene, or: anti-lock braking system
70	ABSA	Amalgamated Banks of South Africa
71	ABSTRIPS	abstraction-based STRIPS
72	ABV	Alcohol by volume
73	ABW	Aruba (ISO 3166 trigram)
74	Ac	Actinium
75	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Antigua and Barbuda (FIPS 10-4 country code),Associazione Calcio (Italian,'football (soccer) club'),A/C,Air Conditioned/Conditioning,Aircraft
76	aC	Attocoulomb
77	AC1	Aircraftman 1st Class
78	AC2	Aircraftman 2nd Class
79	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80	ACARS	Aircraft Communications Addressing and Reporting System
81	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83	ACCD	American Coalition of Citizens with Disabilities
84	ACCS	Air Communications and Control Squadron
85	ACDA	Arms Control & Disarmament Agency
86	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
88	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
90	ACHT	Average Call Hold Time
91	ACINT	Acoustic Intelligence
92	ACK	Acknowledge (telecommunications; cf. NAK)
93	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94	ACLJ	American Center for Law and Justice
95	ACLOS	Automatic CLOS (missile control system)
96	ACLS	American Council of Learned Societies
97	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98	ACM	many,including Association for Computing Machinery; see entry
99	ACMC	(U.S.) Assistant Commandant of the Marine Corps
100	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101	ACNA	Anglican Church in North America
102	ACO	Airspace Control Order
103	ACOBA	Advisory Committee on Business Appointments
104	ACOG	American College of Obstetricians and Gynecologists
105	ACOM	(U.S.) Atlantic Command
106	ACORN	Association of Community Organizations for Reform Now
107	ACP	African,Caribbean and Pacific Group of States,Air Control Point
108	ACR	Advanced Concepts and Requirements
109	ACRI	African Crisis Initiative
110	ACRT	Advanced Concepts Research Tool simulator
111	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112	ACSC	Army Command and Staff College (various nations)
113	ACST	American Cooperative School of Tunis
114	ACST	Australian Central Standard Time
115	ACT	Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP,AIDS Coalition to Unleash Power
116	ACTD	Advanced Concept Technology Demonstration
117	ACTF	(U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R,ACT-Rational (cognitive model),ACT-R/PM,ACT-R/Perceptual-Motor (cognitive model)
118	ACTU	Australian Council of Trade Unions
119	ACU	American Conservative Union
120	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
121	AD	Air Defence,Andorra (ISO 3166 digram),Anno Domini (Latin,'In the year of our Lord')
122	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124	ADAGE	Air Defense Air to Ground Engagement (simulation)
125	ADAP	AIDS Drug Assistance Program
126	ADAS	Asiago-DLR Asteroid Survey
127	ADAT	Alesis Digital Audio Tape (recording format)
128	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129	ADB	Asian Development Bank
130	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132	ADDIE	Analyze Design Develop Implement and Evaluate
133	ADDNS	Advanced Deployable Day/Night Simulation
134	ADGB	Air Defence of Great Britain
135	ADHD	Attention-Deficit Hyperactivity Disorder
136	ADHS	Attention-Deficit Hyperactivity Syndrome
137	ADI	Acceptable/Allowable Daily Intake
138	ADIZ	Air Defence Identification Zone
139	ADL	Anti-Defamation League
140	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141	ADOA	Air Defence Operations Area
142	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
144	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
145	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
146	ADT	Atlantic Daylight Time (UTC−3 hours)
147	ADTB	Army Doctrine and Training Bulletin
148	ADW	Air Defence Warning
149	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
150	AEDT	Australian Eastern Daylight Time
151	AEF	American Expeditionary Force
152	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
153	AESR	Aeronautical Equipment Service Record
154	AEST	Australian Eastern Standard Time
155	aet	After extra time (Football)
156	AEW	Airborne Early Warning,Airborne Electronic Warfare
157	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
158	aF	Attofarad
159	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160	AFAIC	As Far As I'm Concerned
161	AFAICT	As Far As I Can Tell
162	AFAIK	As Far As I Know
163	AFAIR	As Far As I Remember/Recall
164	AFAM	Associazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
165	AFATDS	Advanced Field Artillery Tactical Data System
166	AFCEA	Armed Forces Communications and Electronics Association
167	AFDB	African Development Bank
168	AFES	Automatic Fire Extinguishing System
169	AFG	Afghanistan (ISO 3166 trigram)
170	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171	AFIST	Abrams Full Crew Interactive Skills Trainer
172	AFJ	April Fool's Joke
173	AFK	Away From Keyboard (Internet chat abbreviation)
174	AFLAC	American Family Life Assurance Company of Columbus
175	AFO	Association of Field Ornithologists
176	AFOSR	U.S. Air Force Office of Scientific Research
177	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
178	AFQT	Armed Forces Qualification Test
179	AFRC	Air Force Reserve Command
180	AFRL	Air Force Research Laboratory
181	AFROTC	Air Force Reserve Officer Training Corps
182	AFRTS	Armed Forces Radio and Television Service
183	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
184	AFSCN	U.S. Air Force Satellite Control Network
185	AFSPC	Air Force Space Command
186	AFT	American Farmland Trust
187	AFV	armoured fighting vehicle
188	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
189	ag	Attogram
190	Ag	Silver (Latin argentum)
191	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
192	AGARD	Advisory Group for Aerospace Research and Development
193	AGARDograph	Advanced Guidance for Alliance Research and Development publication
194	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
195	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
196	AGC	Adjutant General's Corps (British Army)
197	AGDC	Australian Game Developers' Conference
198	AGI	Auxiliary Group Intelligence
199	AGM	Annual General Meeting
200	AGN	Active Galactic Nucleus
201	AGO	Angola (ISO 3166 trigram)
202	AGP	Accelerated Graphics Port
203	AGRICOLA	Agriculture Online Access
204	AGS	Alaska Ground Station (LandSat)
205	AGTS	Advanced Gunnery Training System
206	AGU	American Geophysical Union
207	AGW	Autonomous Guided Weapon
208	Ah	Ampere-hour
209	AH	Attack Helicopter
210	aH	Attohenry
211	AHA	American Heart Association
212	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
213	AHEC	Australian Health Ethics Committee
214	AHPCRC	Army High Performance Computing Research Center
215	AHQ	Air Headquarters
216	AHRQ	Agency for Healthcare Research and Quality
217	AHS	American Housing Survey
218	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
219	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
220	AIAA	American Institute of Aeronautics and Astronautics
221	AIC	African Independent Church,Animal Identification Coordinator
222	AICD	Australian Institute of Company Directors
223	AICMFP	And I Claim My Five Pounds
224	AID	U.S. Agency for International Development
225	AIDS	Acquired Immune Deficiency Syndrome
226	AIM	Australian Institute of Management
227	AIMP	Aurora Incremental Modernization Project
228	AIPAC	American Israel Public Affairs Committee
229	AIR	Aircraft Inventory Record
230	AIRFA	American Indian Religious Freedom Act
231	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
232	AIS	Australian Institute of Sport,Automatic Identification System
233	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
234	aJ	Attojoule
235	AJ	Azerbaijan (FIPS 10-4 country code)
236	Ajax	Asynchronous JavaScript And XML
237	AJD	Astronomical Julian day
238	AJP	Allied Joint Publication
239	AJPW	All Japan Pro Wrestling
240	AK	Alaska (postal symbol)
241	aK	Attokelvin
242	AKA	Above knee amputation (orthopaedic usage)
243	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
244	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
245	AKST	Alaska Standard Time (UTC−9 hours)
246	AL	Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram),Anno Lucis (Latin,'Year of Light',in Masonic tradition,most often seen on plaques bearing the founding dates of buildings,in years AD and years AL)
247	Al	Aluminium
248	aL	Attolitre
249	ALA	Åland Islands (ISO 3166 trigram)
250	ALAP	As Long/Late As Possible
251	ALARM	Air-Launched Anti-Radar Missile
252	ALB	Albania (ISO 3166 trigram)
253	ALD	Accounting Line Designator (nuclear weapon targeting)
254	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
255	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
256	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
257	ALGOL	ALGOrithmic Language
258	ALPA	Air Line Pilots Association
259	ALS	Amyotrophic Lateral Sclerosis
260	ALSHS	Abraham Low Self-Help Systems
261	ALSP	Aggregate Level Simulation Protocol
262	ALTE	Association of Language Testers in Europe
263	Am	Americium
264	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
265	AM1	Airman 1st class
266	AMCB	U.S. Army/Marine Corps Board
267	AMFOM	Advanced Missile Fly Out Model
268	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
269	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
270	AML	Acute Myeloid Leukaemia
271	AMLCD	Active Matrix Liquid Crystal Display
272	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
273	AMO	Atlantic Multidecadal Oscillation
274	AMOLED	Active-matrix organic light-emitting diode
275	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
276	AMP	Adenosine MonoPhosphate,Automated Mission Planner
277	AMRAAM	Advanced Medium-Range Air-to-Air Missile
278	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
279	AMS	Agriculture Marketing Service,American Mathematical Society
280	AMSAA	U.S. Army Materiel Systems Analysis Activity
281	AMSO	U.S. Army Model and Simulation Office
282	AMSU	Advanced Microwave Sounding Unit
283	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
284	AN	Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
285	aN	Attonewton
286	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
287	ANC	African National Congress
288	AND	Andorra (ISO 3166 trigram)
289	ANFO	Ammonium nitrate/fuel oil (explosive)
290	ANGLiCo	Air/Naval Gunfire Liaison Company
291	ANL	Argonne National Laboratory
292	ANM	Acoustic Noise Monitor
293	ANOVA	ANalysis Of VAriance
294	ANS	Applied and Natural Sciences
295	ANSI	American National Standards Institute
296	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
297	ANTM	America's Next Top Model
298	ANTY	Acronyms,No Thank You
299	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
300	ANZ	Australia and New Zealand Banking Group
301	ANZAC	Australian and New Zealand Army Corps
302	AO	Angola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
303	AOC	Air Operations Centre,Air Officer Commanding
304	AOD	Adrenalin O.D. (punk rock band)
305	AOI	Angle Of Incidence (Arab Organization for Industrialization)
306	AOL	America OnLine
307	AOR	Area of Responsibility
308	AOSTH	Adventures of Sonic the Hedgehog
309	AOTS	Attack of the Show!
310	AOU	American Ornithologists' Union
311	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
312	APB	All Points Bulletin (police jargon)
313	APEC	Asia Pacific Economic Cooperation
314	APEDS	AMSAA Performance Estimates Data System
315	APEX	Applied Physics Express
316	APHA	American Public Health Association
317	APHIS	Animal and Plant Health Inspection Service
318	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
319	APOD	Aerial Port (Airport) Of Debarkation
320	APOE	Aerial Port (Airport) Of Embarkation
321	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
322	APP	Allied Procedural Publication
323	APR	Annual Percentage Rate
324	AQIM	Al-Qaeda in the Islamic Maghreb
325	Ar	Argon
326	ARAG	Advanced Research and Assessment Group
327	ARB	Administrative Review Board
328	ARBA	Army Review Boards Agency
329	ARCA	Automobile Racing Club of America
330	ARCENT	United States Army Central Command
331	ARDA	Advanced Research and Development Activity (became DTO 2006)
332	ARF	ASEAN Regional Forum
333	ARG	Argentina (ISO 3166 trigram)
334	ARH	Armed Reconnaissance Helicopter
335	ARNet	Acquisition Reform Network
336	ARP	Applied Research Programme
337	ARPA	Advanced Research Projects Agency
338	ARRC	ACE Rapid Reaction Corps
339	ARRF	Allied Rapid Reaction Force
340	ARRL	American Radio Relay League
341	ARSC	Arctic Region Supercomputing Center
342	ARSPACE	U.S. Army Space Command
343	ARTCC	Air Route Traffic Control Center
344	ARWG	Army Research Working Group
345	AS	ActionScript
346	AS	American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
347	As	Arsenic
348	aS	Attosiemens
349	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
350	ASAP	As Soon As Possible
351	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
352	asbl	association sans but lucratif (French 'Non-profit organisation')
353	ASBO	Anti-Social Behaviour Order
354	ASCAP	American Society of Composers,Authors,and Publishers
355	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
356	ASCII	American Standard Code for Information Interchange
357	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
358	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
359	ASEAN	Association of Southeast Asian Nations
360	ASFAR	Americans for a Society Free of Age Restrictions
361	ASG	Area Support Group
362	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
363	ASICS	Anima sana in corpore sano (Latin,'A sound mind in a sound body') (athletic shoe manufacturer)
364	ASIO	Australian Security Intelligence Organisation,Audio stream input output
365	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
366	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
367	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
368	ASMB	American Society for Matrix Biology,Adult Swim Message Board
369	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
370	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
371	ASN	Associate of Science in Nursing
372	ASOC	Air Sovereignty Operations Centre,Air Support Operations Centre,Airport Security and Operations Centre,Antarctic and Southern Ocean Coalition,Atlanta Symphony Orchestra Chorus,Australian Standard Offence Classification
373	ASP	Active Server Pages,American Society of Primatologists,Ammunition Supply Point,Application Service Provider (cf internet service provider),Astronomical Society of the Pacific,Association of Surfing Professionals
374	ASPI	Australian Strategic Policy Institute
375	ASR	Alkali-silica reaction,Anti Slip Regulation
376	ASRAAM	Advanced Short-Range Air-to-Air Missile
377	ASSC	Association for the Scientific Study of Consciousness
378	AST	Atlantic Standard Time (UTC−4 hours)
379	ASTIA	Armed Services Technical Information Agency
380	ASTM	American Society for Testing and Materials
381	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
382	ASUW	AntiSUrface Warfare
383	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
384	ASVEL	Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for 'Sporting Association'; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
385	ASW	AntiSubmarine Warfare
386	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
387	ASX	Advanced Stream Redirector,Australian Securities Exchange
388	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
389	At	Astatine
390	aT	Attotesla
391	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
392	ATAC	Air Transportable Acoustic Communications
393	ATACMS	Army TACtical Missile System
394	ATAPI	Advanced Technology Attachment Packet Interface
395	ATAS	Air-To-Air Stinger (missile)
396	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
397	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
398	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
399	ATCCIS	Army Tactical Command and Control Information System
400	ATESS	Aerospace and Telecommunications Engineering Support Squadron
401	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
402	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
403	ATGM	Anti-Tank Guided Missile
404	ATGW	Anti-Tank Guided Weapon
405	ATK	Attack
406	ATL	Atlanta,Georgia,the largest city and capital of Georgia
407	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
408	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
409	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
410	ATO	Air Tasking Order,Australian Taxation Office
411	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
412	ATSD	(U.S.) Assistant Secretary of Defense
413	ATSDR	Agency for Toxic Substances and Disease Registry
414	ATV	All-Terrain Vehicle
415	ATWA	Air,Trees,Water,Animals
416	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
417	Au	Gold (Latin Aurum)
418	AUC	Ab Urbe Condita / Anno Urbis Conditae (Latin 'from the founding of the city' / 'in the year since the founding of the city') (of Rome),Area Under the Curve (concentration time curve; medicine)
419	AUS	Australia (ISO 3166 trigram)
420	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
421	Auslan	Australian Sign Language
422	AUT	Austria (ISO 3166 trigram)
423	AUTL	Army Universal Task List
424	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
425	Av	Aperture value (photographic mode)
426	aV	Attovolt
427	AVA	American Viticultural Area
428	AVB	Audio Video Bridging
429	AVDLR	Aviation Depot Level Repair
430	AVGP	Armoured Vehicle, General Purpose
431	AVIM	Aviation Intermediate Maintenance
432	AVLB	Armoured Vehicle Launched Body
433	AVM	Air Vice-Marshal, Arteriovenous malformation
434	AVO	Apprehended Violence Order
435	AVP	Arubaanse Volkspartij
436	AVP	Association of Volleyball Professionals
437	AVRE	Armoured Vehicle Royal Engineers
438	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
439	AVUM	Aviation Unit Maintenance
440	AVVO	Acute Vaginal Venereal Outbreak
441	AW	Aruba (ISO 3166 digram)
442	aW	Attowatt
443	AWA	American Wrestling Association
444	AWC	Air Warfare Centre
445	AWD	All Wheel Drive
446	AWE	Advanced Warfighting Experiment
447	AWP	Awaiting Parts (SM&R code)
448	AWSIM	Air Warfare SIMulation
449	AWST	Australian Western Standard Time
450	AWW	Above Water Warfare
451	AX	Åland Islands (ISO 3166 digram)
452	AXP	Ambulance eXchange Point
453	AY	Antarctica (FIPS 10-4 territory code)
454	AYBABTU	All Your Base Are Belong To Us
455	AYU	As Yet Unknown
456	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
457	AZE	Azerbaijan (ISO 3166 trigram)
458	AZUR	Actions en zone urbaine (French for: Urban Operations)
459	BAR	Barbados (IOC trigram,but not FIFA or ISO 3166),British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD , Binational Agricultural Research and Development fund (between the US and Israel),BARDA , Biomedical Advanced Research and Development Agency,BART , Bay Area Rapid Transit,BAS , Battalion Aid Station,BASE , Building,Antenna,Span,Earth (parachute from),BASF , Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory,a German chemicals company),BASIC , Beginner's All-purpose Symbolic Instruction Code (acronym was added later,originally it was simply Basic),BAT , Basic Aid Training,BATF , U.S. Bureau of Alcohol,Tobacco,and Firearms,BATS , Behavior Analysis Training System ,Bradley Advanced Training System,BATTeRS , Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit]
460	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
461	BBB	Better Business Bureau,Blood-brain barrier
462	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
463	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
464	BBN	Bolt,Beranek and Newman
465	BBQ	Barbecue
466	BBS	Breeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC , U.K. Biotechnology and Biological Sciences Research Council,BBVA , Banco Bilbao Vizcaya Argentaria (Spanish bank)
467	BBYO	B'nai B'rith Youth Organization
468	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
469	BCA	Bachelor of Computer Application,Black Coaches & Administrators
470	BCC	Blind Carbon Copy
471	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
472	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
473	BEL	Belgium (ISO 3166 trigram)
474	BEN	Benin (ISO 3166 trigram)
475	BEO	Banquet Event Order
476	BERC	Business Environmental Resource Center
477	BER	Bit Error Rate
478	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
479	BHR	Bahrain (ISO 3166 trigram)
480	BNF	Backus-Naur Form (computing), British National Formulary
481	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
482	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
483	BNS	Bank of Nova Scotia
484	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
485	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
486	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
487	BoAML	Bank of America Merrill Lynch
488	BOC	British Orthodontic Society, British Oxygen Company
489	BÖC	Blue Öyster Cult
490	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
491	BOFH	Bastard Operator From Hell
492	BOGA	Bend Over and Grab Ankles
493	BOGOF	Buy One,Get One Free
494	BOGs	Bunch of Guys
495	BOI	Balance Of Investment,Basis Of Issue
496	BOL	Bolivia (ISO 3166 trigram)
497	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
498	BOPD	Barrel of Oil Per Day
499	BOS	Battlefield Operating System
500	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
501	BP	Battle Position,British Petroleum (today,BP does not officially stand for anything),Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
502	BPV	Battlefield Planning Visualization,Bovine papillomavirus
503	BQ	British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire,Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code)
504	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
505	BRA	Brazil (ISO 3166 trigram)
506	BRAG	Bicycle Ride Across Georgia
507	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
508	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
509	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
510	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
511	BSN	Baloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
512	BSNL	Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
513	BSoD	Blue Screen of Death (distinct from BSD)
514	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
515	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
516	BSW	British Standard Whitworth (screw thread)
517	BSX	Bendigo Stock Exchange
518	BT	Baal teshuva (Hebrew,'master of repentance') ,used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph,Bhutan (FIPS 10-4 country code; ISO 3166 digram),BitTorrent,British Telecom,the former name of the company now known as BT Group,BTDT , Been There,Done That,Bti , Bacillus thuringiensis israelensis,BTID , Battlefield Target Identification Device,BTIS , Battlefield Target Identification System
519	Bt	Baronet,Bacillus thuringiensis
520	BTO	Built To Order
521	BTP	British Transport Police
522	BTR	Bronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
523	BTU	British Thermal Unit
524	BTW	By The Way
525	BU	Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989)
526	BUAV	British Union for the Abolition of Vivisection
527	BUG-E	Battlefield Universal Gateway Equipment ('buggy')
528	BUNO	Bureau Number (aircraft serial number)
529	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
530	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
531	BVD	Bradley,Voorhees & Day (underwear manufacturer)
532	BVR	Beyond Visual Range
533	BVT	Bouvet Island (ISO 3166 trigram)
534	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
535	BW	Bring Wedges (ISO digram)
536	BW	Botswana (ISO 3166 digram)
537	BWA	Botswana (ISO 3166 trigram)
538	BWARS	Bees,Wasps & Ants Recording Society
539	BWC	Biological and Toxin Weapons Convention
540	BWR	Boiling-Water Reactor
541	BX	Base eXchange
542	BY	Burundi (FIPS 10-4 country code), Belarus (ISO 3166 digram), Bavaria
543	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
544	BYOC	Bring Your Own Computer (play on BYOB)
545	BYOF	Bring Your Own Flask
546	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
547	BYU	Brigham Young University
548	BZ	Belize (ISO 3166 digram)
549	BZP	Benzylpiperazine
550	C	Carbon, Coulomb, One Hundred (in Roman numerals)
551	c	Centi
552	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
553	c2c	the British rail company formerly known as LTS Rail
554	Ca	Calcium
555	CA	California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
556	CAA	Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association
557	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
558	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
559	CACM	Central American Common Market
560	CACM	Communications of the ACM
561	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
562	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
563	CADPAT	CAnadian Disruptive PATtern
564	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
565	CAEn	Close Action Engagement (constructive simulation)
566	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
567	CAFAD	Combined Arms For Air Defence
568	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
569	CAFE	Corporate Average Fuel Economy standard
570	CAI	Computer Assisted Instruction
571	CAIR	Council on American-Islamic Relations
572	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
573	CALL	Center for Army Lessons Learned
574	CALM	Communications,Air-interface,Long and Medium range
575	CalPERS	California Public Employees' Retirement System
576	Caltrans	California Department of Transpotation
577	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
578	CAMRA	CAMpaign for Real Ale
579	CAN	Canada (ISO 3166 trigram)
580	CANDU	CANada Deuterium Uranium (nuclear reactor design)
581	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
582	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
583	CARE	Citizens Association for Racial Equality (former New Zealand organisation),Community database on Accidents on the Roads in Europe,Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe)
584	CARMONETTE	Computerized Monte Carlo Simulation
585	CARP	Computed Air Release Point
586	CART	Championship Auto Racing Teams (now defunct)
587	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
588	CASA	Civil Aviation Safety Authority
589	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
590	CASS	Command Activated Sonobuoy System
591	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
592	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
593	CAT	Community Acceptance Testing
594	CATK	Counterattack
595	CATS	Computer Active Technology Suspension
596	CATT	Combined Arms Tactical Trainer
597	CAV	Cavalry
598	CAVOK	Ceiling And Visibility OK ('Kav-okay')
599	CAW	Canadian Auto Workers (trade union)
600	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
601	CBASSE	Commission on Behavioral And Social Sciences and Education ('sea bass')
602	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
603	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
604	CBF	Confederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
605	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
606	CBLA	Comparative bullet lead analysis
607	CBM	Canadian Baptist Ministries
608	CBM	Commodore Business Machines
609	CBML	Coalition Battle Management Language
610	CBN	CardsApp Brand Number
611	CBOL	Consortium for the Barcode of Life
612	CBOT	Chicago Board of Trade
613	CBR	Case-Based Reasoning
614	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
615	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
616	CBS	Columbia Broadcasting System,Corps Battle Simulation
617	CBUS	Columbus,Ohio
618	CC	carbon copy
619	CCA	Counter Command Activity
620	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
621	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
622	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
623	CCF	Cartoon Cartoon Fridays
624	CCG	Canadian Coast Guard,Collectible Card Game
625	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
626	CCGH	Canadian Coast Guard Hovercraft
627	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
628	CCH	Computer-Controlled Hostile
629	CCIF	Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee,merged with the CCIT in 1956 to form the CCITT)
630	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
631	CCIR	Comité consultatif international pour la radio (French for Consultative Committee on International Radio,became the ITU Radiocommunication Sector,ITU-R,in 1992),Commander's Critical Information Requirements
632	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
633	CCITT	Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee,became the ITU Telecommunication Standardization Sector,ITU-T,in 1992)
634	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
635	CCM	Canada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name,one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music
636	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
637	CCOP	Coalition Common Operating/Operational Picture
638	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
639	CCPA	Consumer Credit Protection Act
640	CCR	Creedence Clearwater Revival
641	CCRAp	Canadian Conservative Reform Alliance party
642	CCRP	Command and Control Research Program
643	CCRTS	Command and Control Research and Technology Symposium
644	CCSCS	Consultative Committee for Space Data Systems
645	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
646	CCSIL	Command and Control Simulation Interface Language ('cecil')
647	CCSK	Cyclic Code Shift Keying
648	CCT	Current Commitments Team
649	Cd	Cadmium
650	cd	Candela
651	CD	Compact Disc
652	CD1	Cluster of Differentiation 1 (a small gene family)
653	CDA	UK Centre for Defence Analysis
654	CDD	Capabilities Development Document
655	CDE	Chemical Defence Equipment
656	CDIAC	Carbon Dioxide Information Analysis Center ('see-dee-ack')
657	CDipAF	Certified Diploma in Accounting and Finance
658	CDL	Commercial driver's license
659	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
660	CDMA	Code Division Multiple Access
661	CDMSII	Cryogenic Dark Matter Search II
662	Cdr	Commander
663	CDT	Central Daylight Time (UTC−5 hours)
664	Cdt	Commandant
665	Ce	Cerium
666	CE	Christian/Common Era
667	CEA	Campaign Effectiveness Analysis
668	CECOM	U.S. Army Communications and Electronics Command
669	CEDEX	Courrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
670	CEGEP	Collège d'enseignement général et professionnel (French,'College of General and Vocational Education')
671	CEI	Competitive Enterprise Institute
672	CENTCOM	United States Central Command
673	CENTO	Central Treaty Organization (Baghdad Pact)
674	CENZUB	Centre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
675	CEO	Chief Executive Officer
676	CEP	Circular Error Probable
677	CEPT	Conférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
678	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
679	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
680	CERGA	Centre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
681	CERN	Centre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
682	CERT	Computer Emergency Response Team
683	CESS	Centre for Earth Science Studies (India)
684	CEST	Central European Summer Time
685	CET	Central European Time
686	CEWC	Council for Education in World Citizenship
687	Cf	Californium
688	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
689	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
690	CFAR	Christine's,Federal Acquisition Regulation
691	CFC	ChloroFluoroCarbon,Canadian Fish Company
692	CFES	Continuous Flow Electrophoresis System
693	CFFZ	Call For Fire Zone
694	CFG	Context-free grammar,Control flow graph
695	CFHT	Canada-France-Hawaii Telescope
696	CFI	Center for Inquiry (CSICOP)
697	CFL	Canadian Football League,Co-ordinated Fire Line
698	CFLCC	Coalition Forces Land Component Command
699	CFM	Certified Facilities Manager
700	CFO	Chief Financial Officer
701	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
702	CFR	Code of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
703	CFRP	Carbon fibre reinforced plastic
704	CFS	Chronic Fatigue Syndrome
705	CFSP	Common Foreign and Security Policy
706	CFU	Colony Forming Unit in Microbiology
707	CFV	Cavalry Fighting Vehicle
708	CFZ	Critical Friendly Zone
709	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
710	CGH	Comparative Genomic Hybridisation
711	CGIG	Cross-Government Implementation Group
712	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
713	CGS	Chief of the General Staff
714	CGT	Capital Gains Tax
715	ch	ch(L) is used to denote the Chern character of a line bundle
716	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
717	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
718	CHAOS	Cambridge Heart Anti-Oxidant Study
719	CHAPS	Clearing House Automated Payment System
720	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
721	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
722	CHI	Columbia Helicopters,Inc
723	CHiP	California Highway Patrol
724	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
725	CHL	Chile (ISO 3166 trigram)
726	CHLA	Core Historical Literature of Agriculture
727	CHN	China (ISO 3166 trigram)
728	CHOGM	Commonwealth Heads of Government Meeting
729	CHPSO	California Hospital Patient Safety Organization
730	CHRS	Canadian Heart Rhythm Society
731	CHT	Certified Hand Therapist
732	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
733	Ci	Curie
734	CIA	Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
735	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
736	CIB	Complete In Box (Internet auction/trading listings)
737	CIBC	Canadian Imperial Bank of Commerce
738	CICS	Customer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
739	CID	Certified Interior Designer
740	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
741	CIF	Cost,Insurance,and Freight (Paid) (shipping)
742	CIMMYT	Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
743	CINC	Commander in Chief
744	CINEOS	Campo Imperatore Near-Earth Object Survey
745	CIO	Chief information officer,Congress of Industrial Organizations
746	CIPE	(European) Centre for International Political Economy
747	CIR	(Commander's) Critical Information Requirements
748	CIR	Corotating Interaction Region
749	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
750	CISA	(U.S.) C4I Integration Support Activity
751	CISB	Complete In Sealed Box (Internet auction/trading listings)
752	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
753	CISSP	Certified Information Systems Security Professional
754	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
755	CIV	Côte d'Ivoire (ISO 3166 trigram)
756	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
757	CIVPOP	Civilian Population
758	CIWS	Close-In Weapon System
759	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
760	CJC	Canadian Jewish Congress,Cold Junction Compensation
761	CJCS	Chairman of the Joint Chiefs of Staff
762	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
763	CJO	Chief of Joint Operations
764	CJTF	Combined Joint Task Force
765	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
766	CKA	commonly known as, Canada Kicks Ass
767	CKND	Codename: Kids Next Door
768	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
769	Cl	Chlorine
770	CLA	Clutterers Anonymous
771	CLEC	Competitive Local Exchange Carrier
772	CLEMARS	California Law Enforcement Mutual Aid Radio System
773	CLIC	Compact LInear Collider
774	CLO	Cornell Lab of Ornithology
775	CLOS	Command to Line-Of-Sight (missile control system)
776	CLPFC	CentroLateral PreFrontal Cortex
777	CLRP	College Loan Repayment Program
778	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
779	Cm	Curium
780	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
781	CMHC	Canada Mortgage and Housing Corporation
782	CMIIAW	Correct me if I am wrong
783	CMIS	Common management information service
784	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
785	CMM	Capability Maturity Model
786	CMMC	Corps Materiel Management Centre
787	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
788	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
789	CMP	Common [Operating/Operational] Maritime Picture
790	CMPD	Charlotte Mecklenburg Police Department
791	CMPD	Chronic Myeloproliferative Disease
792	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
793	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
794	CMT	Country Music Television
795	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
796	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)
797	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
798	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
799	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
800	CNBC	Consumer News and Business Channel
801	CND	Campaign for Nuclear Disarmament,Computer Network Defence
802	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
803	CNF	Cost and Freight
804	CNI	Clinical Nursing Intern
805	CNI	Communications,Navigation and Identification
806	CNN	Cable News Network,Cellular Nonlinear Network
807	CNV	Copy-Number Variable (genetics)
808	Co	Cobalt
809	COB	Close Of Business [day]
810	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
811	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
812	CoDA	Co-Dependents Anonymous
813	COGENT	Cognitive Objects within a Graphical EnviroNmenT
814	COIL	Chemical Oxygen Iodine Laser
815	COK	Cook Islands (ISO 3166 trigram)
816	COL	Colombia (ISO 3166 trigram)
817	COLA	Cost Of Living Adjustment
818	CONAD	U.S. Continental Air Defense Command
819	CONUS	Continental United States
820	COO	Chief Operating Officer
821	COPE	U.K. Committee On Publication Ethics
822	COPUS	U.K. Committee on the Public Understanding of Science
823	CORD	Common Operational Requirements Document
824	CORE	Consortium for Oceanographic Research and Education
825	COS	Cooper Ornithological Society
826	COSER	COoperative SERvice
827	CoT	Car of Tomorrow (former NASCAR race car design)
828	COTS	Commercial Off The Shelf
829	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
830	CPA	Certified Public Accountant
831	CPCU	Certified Property Casualty Underwriter
832	CPD	Capabilities Production Document
833	CPE	Certificate of Proficiency in English
834	CPE	Certified Professional Ergonomist
835	CPF	Calibration Parameter File,Canadian Patrol Frigate
836	CPG	Clinical Practice Guideline
837	CPIM	Certification on Production and Inventory Management
838	CPIR	Computationally-Private Information Retrieval
839	CPON	Certified Pediatric Oncology Nurse
840	CPPCC	Chinese People's Political Consultative Conference
841	CPR	Canadian Pacific Railway
842	CPR	Cardiopulmonary resuscitation
843	CPSM	Continuous Phase Shift Modulation
844	CPSU	Communist Party of the Soviet Union
845	CPT	Contingency Planning Team
846	CPU	Contract Postal Unit
847	CPV	Cape Verde (ISO 3166 trigram)
848	CPX	Command Post eXercise
849	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
850	Cr	Chromium
851	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
852	CRAM	Combined Radiometric Correction Model
853	CRD	Capstone Requirements Document
854	CREB	Cyclic AMP-response Element Binding (protein)
855	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
856	CREN	Christian Real Estate Network Real Estate Association
857	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
858	CRIPL	Consolidated Remain-In-Place List
859	CRM	Cardiac Rhythm Management,Customer Relationship Management
860	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
861	CRP	Committee for the Re-Election of the President,Control and Reporting Post
862	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
863	CRTC	Canadian Radio-television and Telecommunications Commission
864	Cs	Caesium
865	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
866	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
867	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
868	CSG	Corps Support Group
869	CSI	see entry
870	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
871	CSIP	Commercial Stable Image Platform (AMD)
872	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
873	CSL	U.K. Central Science Laboratory
874	CSPI	Center for Science in the Public Interest
875	CSR	Control Supply Rate
876	CSR	Corporate Social Responsibility
877	CSRC	Conflict Studies Research Centre
878	CSRF	Cross-Site Request Forgery
879	CST	Central Standard Time (UTC−6 hours)
880	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)
881	CTBT	Comprehensive [Nuclear] Test Ban Treaty
882	CTDB	Compact Terrain Data Base (file format)
883	CTGF	connective tissue growth factor
884	CTI	Co-operative Target Identification
885	CTIL	Critical Tracked Items List
886	CTIS	Central Tire Inflation System
887	CTMS	Clinical Trial Management System
888	CTSS	Compatible Time-Sharing System
889	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
890	CTVT	Canine Transmissible Venereal Tumour
891	Cu	Copper (Latin Cuprum)
892	CUB	Cuba (ISO 3166 trigram)
893	CUCV	Commercial Utility Cargo Vehicle
894	CUPS	Common Unix Printing System
895	CUPW	Canadian Union of Postal Workers
896	CUREA	Consortium for Undergraduate Research and Education in Astronomy
897	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
898	CUW	Curaçao (ISO 3166 trigram)
899	CV	curriculum vitae (résumé)
900	CVLL	Crypto Variable Logic Label
901	CVSD	Continuous Variable Slope Delta (modulation)
902	CVT	Continuously Variable Transmission
903	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
904	CWC	Chemical Weapons Convention
905	CWRU	Case Western Reserve University
906	CWS	Canadian Wildlife Service
907	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
908	CXR	Christmas Island (ISO 3166 trigram)
909	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
910	CYM	Cayman Islands (ISO 3166 trigram)
911	CZE	Czech Republic (ISO 3166 trigram)
912	CZF	(Christian Zombie Fan)
913	CZMA	(US) Coastal Zone Management Act
914	d	Deci
915	D	Deuterium
916	DAFIF	Digital Aeronautical Flight Information File
917	DAK	Disney's Animal Kingdom
918	DAO	Division Ammunition Officer
919	DARE	Drug Abuse Resistance Education
920	DARO	(U.S.) Defense Airborne Reconnaissance Office
921	DARPA	U.S. Defense Advanced Research Projects Agency
922	DAS	Defensive Aids Suite
923	DASD	(U.S.) Deputy Assistant Secretary of Defense
924	DASL	Datapoint's Advanced Systems Language
925	DAU	(U.S.) Defense Acquisition University
926	DAWN	(U.S.) Drug Abuse Warning Network
927	dB	Decibel
928	DB	Deutsche Bahn
929	Db	Dubnium
930	DBA	De Bellis Antiquitatis (miniature wargaming rules)
931	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
932	DBDO	Desert BDO
933	DBE	Dame Commander of the Order of the British Empire
934	DBF	Detection By Fire (weapon launch signature)
935	DBR	De Bellis Renationis (miniature wargaming rules)
936	DBRA	Davis-Bacon Related Acts
937	DBS	Direct Broadcast Services (television)
938	DCAA	(U.S.) Defense Contract Audit Agency
939	DCAS	Devon and Cornwall Archery Society
940	DCC	Dallas Christian College
941	DCD	[Organ] Donation after Cardiac Death
942	DCE	Data Communication Equipment
943	DCFC	Death Cab for Cutie
944	DCL	Disney Cruise Line
945	DCN	Deacon
946	DCOM	Disney Channel Original Movie
947	DCSOPS	Deputy Chief of Staff for Operations and plans
948	DCW	Digital Chart of the World
949	DCYSC	Discovery Channel Young Scientist Challenge
950	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
951	DDA	Deputy District Attorney
952	DDN	U.S. Defense Data Network
953	DDS	Doctor of Dental Surgery
954	DEA	Drug Enforcement Administration
955	DEA	Drug Enforcement Agency
956	DeCA	(U.S.) Defense Commissary Agency
957	DEFCON	Defence readiness condition
958	DELT	Dual Ended Line Test (ing)
959	DEPSECDEF	(U.S.) Deputy Secretary of Defense
960	DERA	British Defence Evaluation and Research Agency (1995-2001)
961	DES	Deep Ecliptic Survey
962	DEU	Germany (ISO 3166 trigram)
963	DFAS	(U.S.) Defense Finance and Accounting Service
964	DFCB	Data Format Control Book
965	DfID	UK Department for International Development
966	DFM	Discrete Field Model see Superluminal motion
967	DFM	Dynamic Flowgraph Methodology
968	DFSP	Dermatofibrosarcoma protuberans
969	DfT	UK Department for Transport
970	DGPS	Differential GPS
971	DGZ	Desired Ground Zero
972	DHA	DocosaHexaenoic Acid
973	DHHS	(U.S.) Department of Health and Human Services
974	DHRA	(U.S.) DoD Human Resources Activity
975	DHS	U.S. Department of Homeland Security
976	DHSS	UK Department of Health and Social Security
977	DHTFYSS	U.S. Don't Have Time For You Silly S****
978	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
979	DIA	U.S. Defense Intelligence Agency
980	DIAC	Department of Immigration and Citizenship (Australia) [1]
981	DiC	Design Island Centre (computing usually used in a teaching situation)
982	DICASS	DIrectional Command Activated Sonobuoy System
983	DIFAR	DIrectional Frequency Analysis and Recording
984	DIME	Dense Inert Metal Explosive
985	DIP	Dual In-line Package (electronics)
986	DIPS	Defense independent pitching statistics
987	DIR	Defence Industrial Research
988	DISCOM	Division Support Command
989	DISE	Deployable Intelligence Support Element
990	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
991	DITY	Do-It-Yourself
992	DIVAD	Division Air Defence
993	DIY	Do It Yourself
994	DJI	Djibouti (ISO 3166 trigram)
995	DK	Denmark (ISO 3166 digram)
996	DL	Dexter's Laboratory
997	DLIC	Detachment Left-In-Contact
998	DLIR	Depot-Level Inspection and Repair
999	DLPMC	DorsoLateral PreMotor Cortex
1000	DLRP	Data Link Reference Point
1001	DLS	Deep Lens Survey
1002	DLSA	(U.S.) Defense Legal Services Agency
1003	DLSc	Diploma in Library Science
1004	DLTBGYD	Don't let the bastards grind you down
1005	DMC	(U.S.) Defense Management Council
1006	DMCA	Digital Millennium Copyright Act
1007	DMM	Digital Multimeter
1008	DMOC	Distributed Mission Operations Centre
1009	DMPA	(U.S.) Defense Medical Programs Activity
1010	DMPFC	DorsoMedial PreFrontal Cortex
1011	DMPK	Drug Metabolism and Pharmacokinetics
1012	DMRB	Design Manual for Roads and Bridges
1013	DMS	U.S. Defense Message System
1014	DMSP	U.S. Defense Meteorological Satellite Program
1015	DMT	Dimethyltryptamine
1016	DMV	Department of Motor Vehicles
1017	DMZ	DeMilitarized Zone
1018	DN	Deacon
1019	DNAW	Day Night All Weather
1020	DNDi	Drugs for Neglected Diseases initiative
1021	DNDO	U.S. Domestic Nuclear Detection Office
1022	DNK	Denmark (ISO 3166 trigram)
1023	DNM	Defence Nuclear Material
1024	DNR	Do Not Resuscitate
1025	DNS	Domain Name System
1026	DOB	Date Of Birth
1027	DOD	U.S. Department of Defense
1028	DODAF	U.S. Department of Defense Architectural Framework
1029	DoDD	U.S. Department of Defense Directive
1030	DoDEA	(U.S.) Department of Defense Education Activity
1031	DOE	U.S. Department of Energy
1032	DOHC	Dual-OverHead-Cam engine
1033	DOI	U.S. Department of the Interior
1034	DORA	Defence of the Realm Act
1035	DOS	Density of State
1036	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1037	DotD	Deal of the Day (marketing gimmick)
1038	DOW	Died of Wounds
1039	DP	Division de production (Algerian petroleum company)
1040	DPA	UK Defence Procurement Agency
1041	DPCO	Double-Pole Change Over
1042	DPDT	Double-Pole Double-Throw
1043	DPI	Dots Per Inch
1044	DPICM	Dual-Purpose Improved Conventional Munition
1045	DPKO	UN Department for Peacekeeping Operations
1046	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1047	DPPDB	Digital Point Positioning Database
1048	DPRK	Democratic People's Republic of Korea
1049	DPST	Double-Pole Single-Throw
1050	DRC	Democratic Republic of the Congo
1051	DRDC	Defence Research & Development Canada
1052	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1053	DRES	Defence Research Establishment Suffield (obsolete 2002)
1054	DRET	Defence Research Establishment Toronto (obsolete 2002)
1055	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1056	DRIC	(U.S.) Defense Research Information Center
1057	DRMS	(U.S.) Defense Revitalization and Marketing Service
1058	DRPR	Drawing Practices
1059	DRT	Document Related Technologies
1060	Ds	Darmstadtium
1061	DSAS	Disney Sing Along Songs
1062	DSB	(U.S.) Defense Science Board
1063	DSCS	U.S. Defense Satellite Communications System
1064	DSCSOC	DSCS Operations Center
1065	DSE	Dry Sheep Equivalent
1066	DSG	Direct-Shift Gearbox
1067	DSID	Dismounted Soldier Identification System
1068	DSL	Digital Subscriber Line
1069	DSLR	Digital single-lens reflex (camera)
1070	DSM	Diagnostic and Statistical Manual of Mental Disorders
1071	DSN	Deep Space Network
1072	DSPL	Design Specialists and Plans Language
1073	DSR	Deformed Special Relativity
1074	DST	Daylight Saving Time
1075	DSTL	British Defence Science and Technology Laboratory
1076	DSWA	(U.S.) Defense Special Weapons Agency
1077	DTA	Dental Technologists Association
1078	DTD	Digital Terrain Data
1079	DTG	Date-Time Group
1080	DTH	Direct To Home (television)
1081	DTI	UK Department of Trade and Industry
1082	DTIC	(U.S.) Defense Technical Information Center
1083	DTL	Diode-Transistor Logic (electronics)
1084	DTMF	Dual-tone multi-frequency signaling
1085	DTO	Disruptive Technology Office (was ARDA)
1086	DTR	Determine The Relationship
1087	DTSA	(U.S.) Defense Technology Security Administration
1088	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1089	DUSD	(U.S.) Deputy Under-Secretary of Defense
1090	DVLC	UK Driver and Vehicle Licencing Centre
1091	DVM	Doctor of Veterinary Medicine
1092	DVO	Direct View Optics
1093	DVOM	Digital Volt-Ohm Meter
1094	DVP	various meanings (disambiguation page)
1095	DW	Drum Workshop
1096	DWIM	Do What I Mean
1097	DWM	Doctor Who Magazine
1098	DWTS	Dancing with the Stars
1099	DWW	Down with Webster
1100	DXA	Dual-energy X-ray Absorptiometry
1101	DXM	DeXtroMethorphan
1102	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1103	Dy	Dysprosium
1104	DZA	Algeria (ISO 3166 trigram)
1105	E	East
1106	EABU	Explain Acronyms Before Use
1107	EAC	Echelons Above Corps
1108	EAPC	Euro-Atlantic Partnership Council
1109	EAST	Experimental Advanced Superconducting Tokamak
1110	EBD	Electronic Brake Distribution
1111	EBE	Extraterrestrial Biological Entity
1112	EBSA	Employee Benefits Security Administration
1113	EBW	Electron Beam Welding
1114	EBW	Exploding BridgeWire
1115	ECASS	European Centre for Analysis in the Social Sciences [1]
1116	ECBR	European Coalition for Biomedical Research
1117	ECCM	Electronic Counter-Counter-Measures
1118	ECFS	Electronic Case Filing System
1119	ECG	Electrocardiogram
1120	ECHR	European Convention on Human Rights
1121	ECJ	European Court of Justice
1122	ECL	Emitter Coupled Logic (electronics)
1123	ECommHR	European Commission on Human Rights
1124	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1125	ECT	ElectroConvulsive Therapy
1126	ECtHR	European Court of Human Rights
1127	EDA	European Defence Agency
1128	EDAC	Error Detection And Correction
1129	EDCS	Environmental Data Coding Specification
1130	EDH	Eastman Dental Hospital
1131	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1132	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1133	EEC	European Economic Community (predecessor of the EU)
1134	EEG	ElectroEncephaloGram
1135	EENT	End Evening Nautical Twilight
1136	EEO	Equal Employment Opportunity
1137	EEOC	(U.S.) Equal Employment Opportunity Commission
1138	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1139	EFF	Electronic Frontier Foundation
1140	EFL	English as a Foreign Language
1141	EFM	Enterprise Feedback Management
1142	EFOA	European Fuel Oxygenates Association
1143	EFSA	European Food Safety Authority
1144	EFT	Electronic Fund Transfer
1145	EFV	Expeditionary Fighting Vehicle
1146	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1147	EGCG	EpiGalloCatechin-3-Gallate
1148	EGIS	Erieye Ground Interface Segment
1149	EGRET	Energetic Gamma-Ray Experiment Telescope
1150	EGY	Egypt (ISO 3166 trigram)
1151	EHF	Extremely High Frequency
1152	EHR	Equipment History Record
1153	Ei	Exbi
1154	EI	Ireland (FIPS 10-4 country code; from Éire)
1155	EIA	Environmental Impact Assessment
1156	EIAH	Encyclopedia of Iranian Architectural History
1157	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1158	EIC	East India Company
1159	EICS	East India Company's Service
1160	eID	electronic ID
1161	EIRP	Effective Isotropic Radiated Power
1162	EIS	Environmental Impact Statement
1163	EJ	Exajoule
1164	EKG	Electrocardiogram (from German Elektrokardiogramm)
1165	EKMS	Electronic Key Management System
1166	EL	Exalitre
1167	ELINT	Electronic Intelligence
1168	ELL	English Language Learner
1169	ELM	Edge-Localised Mode (plasma physics)
1170	ELO	Electric Light Orchestra
1171	ELSS	Emergency Life Support Stores
1172	EM	ElectroMagnetism/ElectroMagnetic
1173	Em	Exametre
1174	EMA	European Medicines Agency
1175	EMCON	(Electromagnetic) Emissions Control
1176	EMDG	Euro-Missile Dynamics Group
1177	EMDR	Eye Movement Desensitisation and Reprocessing
1178	EMEA	Europe,Middle East and Africa
1179	EMG	ElectroMyoGraph
1180	EMP	ElectroMagnetic Pulse
1181	EMS	Emergency Medical Services
1182	EMT	Emergency Medical Technician
1183	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1184	ENE	East North-East
1185	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1186	ENTEC	Euro NATO Training Engineer Centre
1187	ENVL	Envelope
1188	ENY	Enemy
1189	EOD	Explosive Ordnance Disposal
1190	EOG	ElectroOculoGraphy
1191	EOM	End of Message
1192	EOSAT	Earth Observation Satellite
1193	EOSDIS	Earth Observation Satellite Data and Information System
1194	EP	European Parliament
1195	EP	Extended play
1196	EPCOT	Experimental Prototype Community Of Tomorrow
1197	EPGS	EOS Polar Ground Sites
1198	EPIRB	Emergency Position Indicating Radio Beacon
1199	EPL	English Premier League
1200	EPOS	Electronic Point Of Sale
1201	EPPA	Employee Polygraph Protection Act
1202	EPR	European Pressurised [Nuclear] Reactor
1203	EQ	Emotional Quotient
1204	Er	Erbium
1205	ERCIM	European Research Consortium for Informatics and Mathematics
1206	ERI	Eritrea (ISO 3166 trigram)
1207	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1208	EROS	Earth Resources Observation System
1209	ERP	Engineer Regulating Point
1210	ERR	Eesti Rahvusringhääling
1211	ERS	Earth Resources Survey
1212	ERTS	Earth Resources Technology Satellite (became Landsat)
1213	ERV	Endogenous RetroVirus
1214	ESD	ElectroStatic Discharge
1215	ESDP	European Security and Defence Policy
1216	ESE	East South-East
1217	ESH	Western Sahara (ISO 3166 trigram)
1218	ESL	English as a Second Language
1219	ESM	Electronic warfare Support Measures
1220	ESO	European Southern Observatory
1221	ESOL	English for Speakers of Other Languages
1222	ESPN	Entertainment and Sports Programming Network
1223	ESU	Emergency Services Unit
1224	ESV	Engineer Support Vehicle
1225	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1226	ETH	Ethiopia (ISO 3166 trigram)
1227	ETI	Extra-Terrestrial Intelligence
1228	ETLA	Extended TLA
1229	ETT	Embedded Training Team
1230	Eu	Europium
1231	EUCOM	(U.S.) European Command
1232	EUUSA	European Union and United States of America
1233	EV	Exavolt
1234	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1235	EWTN	Eternal Word Television Network
1236	Exatesla	Extra Terrestrial
1237	EXREP	Expeditious Repair (SM&R code)
1238	f	Femto
1239	fA	Femtoampere
1240	FA	Food Addicts in Recovery Anonymous
1241	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1242	FAAD	Forward Area Air Defence
1243	FAADEZ	Forward Area Air Defence Engagement Zone
1244	FAAFP	Fellow of the American Academy of Family Physicians
1245	FAAN	Fellow of the American Academy of Neurology
1246	FAAN	Fellow of the American Academy of Nursing
1247	FAAQ	Frequently Asked and Anticipated Questions
1248	FAASV	Field Artillery Ammunition Supply Vehicle
1249	FAB	Feline Advisory Bureau (UK feline charity)
1250	FACA	(US) Federal Advisory Committee Act
1251	FACH	Fuerza Aérea de Chile
1252	FACN	Fellow of the American College of Nutrition
1253	FACP	Fellow of the American College of Physicians
1254	FACTS	Flexible Alternating Current Transmission System
1255	FAM	Foreign Affairs Manual
1256	FAO	Food and Agriculture Organization
1257	FAPA	Fellow of the American Psychological Association
1258	FAPHA	Fellow of the American Public Health Association
1259	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1260	FASCAM	Family of Scatterable Mines[1]
1261	FASD	Fetal Alcohol Spectrum Disorder
1262	FASEB	Federation of American Societies for Experimental Biology
1263	FAT	Field Artillery Tractor
1264	FAVS	Future Armoured Vehicle System
1265	FAW	Football Association of Wales
1266	FBCS	Fellow of the British Computer Society
1267	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1268	FBIS	Foreign Broadcast Information Service
1269	FBM	Board foot
1270	fC	Femtocoulomb
1271	FCC	U.S. Federal Communications Commission
1272	FCE	First Certificate in English
1273	FCF	Financial Free Cash Flow
1274	FCLA	Fraud Claims Law Associate
1275	FCO	UK Foreign and Commonwealth Office
1276	FCW	Florida Championship Wrestling
1277	FD	Falun Dafa
1278	FDA	Food and Drug Administration (U.S.)
1279	FDBK	(I) Feedback
1280	Fe	Iron (Latin Ferrum)
1281	FEAST	Forum for European-Australian Science and Technology Cooperation
1282	FEATS	Festival of European Anglophone Theatrical Societies link title
1283	FEBA	Forward Edge of the Battle Area
1284	FED	Field Emission Display
1285	FEDEP	Federation Development Process (Simulation)
1286	FEF	Frontal Eye Field (neurophysiology)
1287	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1288	FENS	Federation of European Neuroscience Societies
1289	FES	Flywheel Energy Storage
1290	FEST	Frankfurt English Speaking Theatre link title
1291	FET	Field-effect transistor
1292	FEZ	Fighter Engagement Zone
1293	fF	Femtofarad
1294	FF	Final Fantasy
1295	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1296	FFC	Free For Chat
1297	FFE	Fukuoka Futures Exchange
1298	FFF	Fédération française de football (French for: French Football Federation)
1299	FFG	Guided Missile Frigate (hull classification symbol)
1300	FFOV	Forward Field Of View
1301	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1302	FFS	For Fuck's Sake
1303	FFT	Final Fantasy Tactics
1304	FG	Falun Gong
1305	fg	Femtogram
1306	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1307	FGOTUS	First Gentleman of the United States
1308	FGR	Flickr Group Roulette
1309	fH	Femtohenry
1310	FHFIF	Foster's Home for Imaginary Friends
1311	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1312	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1313	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1314	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1315	FIBUA	Fighting In Built-Up Areas
1316	FIC	Fellowship for Intentional Community
1317	FID	Foreign Internal Defence
1318	FIE	Fly-In Echelon
1319	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1320	FIFe	Fédération internationale féline (French for: International Feline Federation)
1321	FIFO	First In, First Out
1322	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1323	FIGJAM	Fuck I'm Good, Just Ask Me
1324	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1325	FIN	Finland (ISO 3166 trigram)
1326	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1327	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1328	FIS	Fédération internationale de ski (French for: International Ski Federation)
1329	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1330	FISH	Fluorescence In-Situ Hybridisation
1331	FiST	Fire Support Team
1332	FITS	Flexible Image Transport System
1333	FIU	Florida International University
1334	fJ	Femtojoule
1335	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1336	FJI	Fiji (ISO 3166 trigram)
1337	FJN	Financial Job Network
1338	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1339	fK	Femtokelvin
1340	FKSM	Fort Knox Supplemental Manual
1341	FKT	Fastest Known Time
1342	fL	Femtolitre
1343	FL	Florida (postal symbol)
1344	fl	floruit (Latin for: living) (genealogy)
1345	FLA	Florida,Front Line Assembly,Future Large Aircraft
1346	FLAB	Four-letter abbreviation
1347	FLAC	Free Legal Advice Centres
1348	FLAC	Free Lossless Audio Codec
1349	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1350	FLB	Forward Logistics Base
1351	FLET	Forward Line of Enemy Troops
1352	FLG	Falun Gong
1353	FLIP	Flight Information Publication
1354	FLIR	Forward Looking InfraRed (sensor)
1355	FLK	Falkland Islands (ISO 3166 trigram)
1356	FLOT	Forward Line of Own Troops
1357	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1358	FLQ	Free Legal Questions
1359	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1360	FLSA	Fair Labor Standards Act
1361	FLTSAT	Fleet Satellite
1362	FLTSATCOM	Fleet Satellite Communication System
1363	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1364	FM	Factory Mutual
1365	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)
1366	fm	Femtometre
1367	Fm	Fermium
1368	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1369	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1370	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1371	FMCG	Fast Moving Consumer Goods
1372	FME	Formal Methods Europe
1373	FMECA	Failure Modes and Effect Criticality Analysis
1374	FMJD	Fédération Mondiale du Jeu de Dames
1375	FMLA	Family Medical Leave Act
1376	FoE	Friends of the Earth
1377	FOGC	Federal Oil and Gas Council
1378	FOH	Front Of House
1379	FOIA	Freedom of Information Act
1380	FOM	Federation Object Model
1381	FONSI	Finding of No Significant Impact
1382	FOO	Forward Observation Officer
1383	FOOP	Friends Of Organ Pipes (Volunteer group)
1384	FoS	Family of Systems
1385	FOSE	Fallout 3 Script Extender
1386	FOSE	Federal Office Systems Expo
1387	FOT	Free on truck
1388	FOTA	Fellow of the Orthodontic Technicians Association
1389	FOTC	Flight of the Conchords
1390	FOUO	For Official Use Only
1391	FP	French Polynesia (FIPS 10-4 territory code)
1392	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1393	FPS	Fire Prevention System
1394	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1395	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1396	Fr	Francium
1397	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1398	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1399	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1400	FRICBM	Full Range ICBM
1401	FRO	Faroe Islands (ISO 3166 trigram)
1402	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1403	FRSA	Fellow of the Royal Society of Art
1404	FRY	Federal Republic of Yugoslavia
1405	fs	Femtosecond
1406	fS	Femtosiemens
1407	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1408	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1409	FSCL	Fire Support Co-ordination Line
1410	FSE	Fire Support Element
1411	FSF	Free Software Foundation
1412	FSH	Follicle Stimulating Hormone
1413	FSI	Fuel Stratified Injection
1414	FSS	Fire Support Station
1415	FSSP	Families of Structurally Similar Proteins
1416	FSTC	Foreign Science Technology Center (now NGIC)
1417	fT	Femtotesla
1418	FTC	Federal Trade Commission
1419	FTE	Full Time Equivalent
1420	FTL	Faster Than Light
1421	FTS	Flight Termination System used during some rocket launches
1422	FTS	Fuck That Shit
1423	FU	Smoke (METAR Code)
1424	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1425	fV	Femtovolt
1426	fW	Femtowatt
1427	FW	Forward
1428	FWC	Football World Cup
1429	FWF	Fixed Word Format
1430	FWI	French West Indies
1431	FWIW	For What It's Worth
1432	FWS	U.S. Fish and Wildlife Service
1433	FWT	Fresh Water Tank
1434	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1435	FYA	For Your Agenda
1436	FYDP	Five-Year Defense Plan (U.S.)
1437	FYI	For Your Information
1438	FYROM	Former Yugoslav Republic of Macedonia
1439	FZDZ	Freezing Drizzle (METAR Code)
1440	FZFG	Freezing Fog (METAR Code)
1441	FZRA	Freezing Rain (METAR Code)
1442	g	Gram
1443	G3	Heckler & Koch G3
1444	GAAR	General Anti-Avoidance Rule (tax evasion)
1445	GAB	Gabon (ISO 3166 trigram)
1446	GABA	Gamma-AminoButyric Acid
1447	GAD	Generalized Anxiety Disorder
1448	GAF	Garfield and Friends
1449	GAO	U.S. Government Accountability Office
1450	GAW	Global Atmospheric Watch
1451	GBBC	Great (Global) Backyard Bird Count
1452	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1453	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1454	GCA	Graduate in Claims Administration
1455	GCD	see entry
1456	GCF	Greatest Common Factor
1457	GCI	Ground-controlled interception
1458	GCN	Gamma-ray burst Coordination Network
1459	GCS	Global Coordinate System
1460	GCSE	General Certificate of Secondary Education (UK)
1461	Gd	Gadolinium
1462	GD	Grenada (ISO 3166 digram)
1463	GDL	Game Definition Language
1464	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1465	GDR	German Democratic Republic (cf. DDR)
1466	GDW	Game Designers Workshop
1467	Ge	Germanium
1468	GEBCO	General Bathymetric Chart of the Oceans
1469	GEC	Great Engineering Challenge
1470	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1471	GEEP	Geophysical Equipment Exploration Platform
1472	GEN	Full General (four stars) in the U.S. Army
1473	GeV	Gigaelectron-volt
1474	GEV	Ground Effect Vehicle
1475	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1476	GFI	Ground Fault Interruptor (aka GFCI)
1477	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1478	GFN	Global Footprint Network
1479	GG	Georgia (FIPS 10-4 country code)
1480	GGK	Good God Karma
1481	GHA	Ghana (ISO 3166 trigram)
1482	GHB	gamma-Hydroxybutyric acid
1483	Gi	Gibi
1484	GIB	Gibraltar (ISO 3166 trigram)
1485	GIG	Global Information Grid
1486	GINO	Godzilla In Name Only
1487	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1488	GJD	Geocentric Julian Day
1489	GLAAD	Gay and Lesbian Alliance Against Defamation
1490	GLAC	General Ledger Accounting Code
1491	GLAST	Gamma-ray Large Area Space Telescope
1492	GLBA	Gramm-Leach-Bliley Act
1493	GLC	Gas-liquid chromatography
1494	GLP	Guadeloupe (ISO 3166 trigram)
1495	GLV	Gained Life Value
1496	Gm	Gigametre
1497	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1498	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
1499	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1500	GMFSC	Ground Mobile Forces Satellite Communications
1501	GMO	Genetically Modified Organism
1502	GMPCS	Global Mobile Personal Communications by Satellite
1503	GNAS	Grand National Archery Society
1504	GNB	Guinea-Bissau (ISO 3166 trigram)
1505	GNP	Gross National Product
1506	GNQ	Equatorial Guinea (ISO 3166 trigram)
1507	GnRH	Gonadotropin-Releasing Hormone
1508	GO	Glorioso Islands (FIPS 10-4 territory code)
1509	GOA	General of the Army (United States only)
1510	GOAT	Greatest Of All Time
1511	GOC	General Officer Commanding
1512	GOES	Geostationary Operational Environmental Satellite
1513	GOP	Grand Old Party
1514	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1515	GOSC	General Officer Steering Committee
1516	GOSH	Great Ormond Street Hospital
1517	GOSP	Gas/Oil Separation Plant
1518	GOTS	Government off-the-shelf
1519	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1520	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1521	GPA	Grade Point Average
1522	GPC	Global Path Cache
1523	GPIB	General-Purpose Instrumentation/Interface Bus
1524	GPO	General Post Office
1525	GPPC	Genetics and Public Policy Center
1526	GPR	Ground-Penetrating Radar
1527	GPS	General Problem Solver,Global Positioning System
1528	GPT	General Purpose Technology, Get paid to surf (an online business model)
1529	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]
1530	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1531	GRAIL	Gravity Recovery and Interior Laboratory
1532	GRAS	Generally recognized as safe (FDA list)
1533	GRB	Gamma-Ray Burst
1534	GRC	Greece (ISO 3166 trigram)
1535	GRD	Grenada (ISO 3166 trigram)
1536	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1537	grep	[search] Globally for Regular Expression,Print [lines]
1538	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1539	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1540	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1541	GRL	Greenland (ISO 3166 trigram)
1542	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1543	Gs	Gigasecond
1544	GSA	U.S. General Services Administration
1545	GSD	Graphical Situation Display
1546	GSGB	(God send glamour boy 9-10/10)
1547	GSK	GlaxoSmithKline [good sexual karma]
1548	GSN	Game Show Network
1549	GSO	General Services Officer (U.S. Department of State)
1550	GSOH	Good Sense Of Humour
1551	GSP	Georges St-Pierre (Canadian MMA fighter)
1552	GSR	Gun Shot Residue
1553	GSS	Generic Security Services
1554	GSW	Gunshot wound
1555	GTD	Getting Things Done
1556	GTG	Got To Go (Internet chat)
1557	GTGN	Getty Thesaurus of Geographic Names
1558	GTK	Good To Know (Internet chat)
1559	GTM	Guatemala (ISO 3166 trigram)
1560	GU	Guam (postal symbol; ISO 3166 digram)
1561	GUF	French Guiana (ISO 3166 trigram)
1562	GUILT	Gangliated Utrophin Immuno Latency Toxin
1563	GULCR	Grupo de Usuarios de Linux de Costa Rica
1564	GUT	Grand Unification Theory
1565	GWARS	Ground Warfare System (simulation)
1566	GWAS	Grand Western Archery Society
1567	GWOT	Global War on Terrorism
1568	GXE	Gene-enivronment interaction
1569	GXM	Matrox Graphics eXpansion Module
1570	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1571	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1572	h	Hecto
1573	HAARP	High Frequency Active Auroral Research Program
1574	HAART	Highly Active Anti-Retroviral Therapy
1575	HAI	Human Awareness Institute
1576	HAL	Hardware Abstraction Layer
1577	HALO	High Altitude Low Opening (parachute jump)
1578	HAM	Amateur radio operator
1579	HANS	Head And Neck Support (device used in many race cars)
1580	HARM	High-speed Anti-Radiation Missile
1581	HAW	Heavy Antitank Weapon
1582	HAWK	Homing All the Way Killer (air defence system)
1583	HAZ	Heat-Affected Zone
1584	HAZMAT	Hazardous Materials
1585	HBCD	HexaBromoCycloDodecane
1586	HBO	Home Box Office
1587	HBR	Harvard Business Review
1588	HBT	Heterojunction Bipolar Transistor
1589	HBV	Hepatitis B Virus
1590	HCCI	Homogeneous Charge Compression Ignition
1591	HCF	Highest Common Factor
1592	HCSC	Higher Command and Staff Course
1593	HDL	High-Density Lipoprotein
1594	HDM	Human Decision-Making
1595	HDRA	Henry Doubleday Research Association
1596	He	Helium
1597	HE	High Explosive
1598	HEAT	High Explosive Anti-Tank (ammunition)
1599	HEBA	Hellenic Basketball Clubs Association
1600	HEER	High-Explosive Extended Range (ammunition)
1601	HEIC	Honourable East India Company
1602	HEMP	High-Altitude Electromagnetic Pulse
1603	HEOSS	High Earth Orbit Space Surveillance
1604	HEP	High-Explosive Plastic (ammunition)
1605	HEPA	High-Efficiency Particulate Air (filter)
1606	HESV	Heavy Engineering Support Vehicle
1607	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1608	HEU	Highly Enriched Uranium
1609	Hf	Hafnium
1610	HF	High Frequency
1611	HFE	Human Fertilisation and Embryology (UK Act)
1612	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1613	HFEA	Human Fertilisation and Embryology Authority (UK)
1614	Hg	Mercury (Latin Hydrargyrum)
1615	HGC	UK Human Genetics Commission
1616	HGF	Human Growth Factor
1617	HGTV	Home & Garden Television
1618	HI	Hawaii (postal symbol)
1619	HIH	His (or Her) Imperial Highness
1620	HIM	His (or Her) Imperial Majesty
1621	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1622	HIMEZ	High Altitude Missile Engagement Zone
1623	HIMYM	How I Met Your Mother
1624	HIPAA	U.S. Health Insurance Portability and Accountability Act
1625	Hipparcos	HIgh Precision Parallax COllecting Satellite
1626	Hird	Hurd of interfaces representing depth (cf. HURD)
1627	HiRISE	High Resolution Imaging Science Experiment
1628	HIT	Health Information Technology
1629	HIV	Human Immunodeficiency Virus
1630	HIWT	Hobart Institute of Welding Technology
1631	HJD	Heliocentric Julian Day
1632	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1633	HKG	Hong Kong (ISO 3166 trigram)
1634	HKS	HyperKinetic Syndrome
1635	hL	Hectolitre
1636	HL	Holding Line
1637	HLL	High-Level Language
1638	HLN	Headline News
1639	HLOS	High Level Output Specification
1640	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1641	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1642	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1643	HMF	HydroxyMethyl Furfural
1644	HMO	Health maintenance organization
1645	HMP	Her Majesty's Prison
1646	HMRC	Her/His Majesty's Revenue and Customs
1647	HMSO	Her Majesty's Stationery Office
1648	HMV	His Master's Voice
1649	HN	Honduras (ISO 3166 digram)
1650	HND	Honduras (ISO 3166 trigram)
1651	Ho	Holmium
1652	HO	Honduras (FIPS 10-4 country code)
1653	HOLLAND	Hope Our Love Lasts And Never Dies
1654	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1655	HOT	Highly Optimised Tolerance
1656	HOTAS	Hands on throttle-and-stick
1657	HOV	High Occupancy Vehicle
1658	hp	horse power
1659	HPA	UK Health Protection Agency
1660	HPCL	Hindustan Petroleum Corporation Limited
1661	HPLC	High Performance Liquid Chromatography
1662	HPT	High[er] Payoff Target
1663	HPV	Human Papilloma Virus
1664	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1665	HRD	Human Resource Development
1666	HRF	High iness Forces
1667	HRH	His (or Her) Royal Highness
1668	HRM	His (or Her) Royal Majesty
1669	HRM	Human Resource Management
1670	HRT	Hormone Replacement Therapy
1671	Hs	Hassium
1672	HSBC	The Hong Kong and Shanghai Banking Corporation
1673	HSC	Higher School Certificate
1674	HSM	High School Musical
1675	HSMAD	Human Science/Modeling and Analysis Data
1676	HSN	Home Shopping Network
1677	HSPH	Harvard School of Public Health
1678	HSSI	High-Speed Serial Interface
1679	HST	see entry
1680	HTA	HyperText Application
1681	HTFU	Harden The Fuck Up
1682	HTH	Hope That Helps
1683	HTI	Haiti (ISO 3166 trigram)
1684	HTML	HyperText Markup Language
1685	HTR	Heated Towel Rail
1686	HTS	High-Temperature Superconducting wire
1687	HTTP	HyperText Transfer Protocol
1688	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1689	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1690	HUN	Hungary (ISO 3166 trigram)
1691	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1692	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1693	HVAP	High Velocity Armour Piercing (ammunition)
1694	HVHF	High velocity human factors
1695	HVM	High Velocity Missile
1696	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1697	HWM	Hardware morphing (computer graphics rendering)
1698	HXB	The glycoprotein Tenascian C
1699	HZ	Haze (METAR Code)
1700	Hz	Hertz
1701	IA	Iowa (postal symbol)
1702	IAAL	I Am A Lawyer
1703	IAB	International Association for Biologicals
1704	IAD	Ion Assisted Deposition
1705	IADS	Integrated Air Defence System
1706	IAEA	International Atomic Energy Agency
1707	IAF	{i} Industrial Areas Foundation
1708	IAFG	Information Assurance Focus Group
1709	IANA	Internet Assigned Numbers Authority
1710	IANAL	I Am Not A Lawyer
1711	IAS	Image Assessment System
1712	IASIP	It's Always Sunny in Philadelphia
1713	IATA	International Air Transport Association
1714	IATF	International Automotive Task Force
1715	IATSE	International Alliance of Theatrical Stage Employees
1716	IAUC	International Astronomical Union Circular
1717	IAW	In Accordance With
1718	IB	International Baccalaureate
1719	IBA	Important Bird Area
1720	IBD	Inflammatory Bowel Disease
1721	IBDM	Information Based Decision Making
1722	IBM	International Business Machines
1723	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1724	IBS	Irritable Bowel Syndrome
1725	ICANN	Internet Corporation for Assigned Names and Numbers
1726	ICAO	International Civil Aviation Organization
1727	ICBM	Intercontinental Ballistic Missile
1728	ICBN	International Code of Botanical Nomenclature
1729	ICE	In case of emergency
1730	ICES	International Council for the Exploration of the Sea
1731	ICF	Intelligent Community Forum
1732	ICMP	Internet Control Message Protocol
1733	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1734	ICO	Intermediate Circular Orbit
1735	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1736	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1737	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1738	ICRL	Individual Component Repair List
1739	ICRS	International Celestial Reference System
1740	ICSI	Intracytoplasmic Sperm Injection
1741	ICT	Information and communication technologies
1742	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1743	ICV	Infantry Carrier Vehicle
1744	ICYMI	In Case You Missed It
1745	IDC	International Data Corporation
1746	IDDI	I don't do initialisms (see irony)
1747	IDGAF	I don't give a fuck
1748	IDK	I don't know
1749	IDL	Interface Definition Language
1750	IDN	Indonesia (ISO 3166 trigram)
1751	IEA	International Energy Agency
1752	IEC	International Electrotechnical Commission
1753	IED	Improvised Explosive Device
1754	IELTS	International English Language Testing System
1755	IER	Information Exchange Requirement
1756	IET	Initial Entry Training
1757	IET	Institution of Engineering and Technology
1758	IETF	Internet Engineering Task Force
1759	IEW	Intelligence and Electronic Warfare
1760	IFAB	International Football Association Board
1761	IFAH	International Federation for Animal Health
1762	IFAP	International Federation of Agricultural Producers
1763	IFO	Identified Flying Object (see also UFO)
1764	IFOV	Instantaneous Field of View
1765	IFPI	International Federation of Phonographic Industries
1766	IFRB	International Frequency Registration Board
1767	IFV	Infantry Fighting Vehicle
1768	IG	Inspector General
1769	IGNOU	Indira Gandhi National Open University
1770	IGS	International Ground Station
1771	IHH	Idiopathic Hypogonadotropic Hypogonadism
1772	IHO	International Hydrographic Organization
1773	IHR	Institute for Historical Review
1774	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1775	II	Two (in Roman numerals)
1776	IICA	Inter-American Institute for Cooperation on Agriculture
1777	IIE	Innovative Interstellar Explorer
1778	III	Three (in Roman numerals)
1779	IIRC	If I Recall/Remember Correctly
1780	IISS	International Institute for Strategic Studies
1781	IJN	Imperial Japanese Navy (World War II)
1782	IJWP	Interim Joint Warfare Publication
1783	ILDS	Improved Landmine Detection System
1784	ILO	International Labour Organization
1785	ILRI	International Livestock Research Institute
1786	ILY	I Love You [pronounced ILL-LEE]
1787	IMBD	International Migratory Bird Day
1788	IMDb	Internet Movie Database
1789	IME	In My Experience
1790	IMHO	In My Humble/Honest Opinion
1791	IML	International Mister Leather
1792	IMNSHO	In My Not So Humble Opinion
1793	IMPAC	International Merchant Purchase Authorization Card
1794	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1795	IMPATT	IMPact Avalanche Transit Time diode
1796	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1797	IMRL	Individual Material iness List
1798	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1799	IMsL	International Ms. Leather
1800	IMT	Integrated Management Tool
1801	IMU	International Mathematical Union
1802	In	Indium
1803	INA	Immigration and Nationality Act
1804	INAS	International Near-Earth Asteroid Survey
1805	INCITS	InterNational Committee for Information Technology Standards
1806	IND	India (ISO 3166 trigram)
1807	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1808	inet	the Internet
1809	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1810	INFOSEC	Information Security
1811	INLA	Irish National Liberation Army
1812	INMARSAT	International Maritime Satellite organization
1813	INRIA	Institut national de recherche en informatique et en automatique
1814	INS	Immigration and Naturalization Service
1815	InSAR	Interferometric synthetic aperture radar
1816	INST	Information Standards and Technology
1817	INTERFET	International Force for East Timor
1818	INTSUM	Intelligence Summary
1819	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1820	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1821	IPB	Intelligence Preparation of the Battlefield
1822	IPL	Inferior Parietal Lobule
1823	IPO	Initial Public Offering
1824	IPT	Integrated Product/Project Team
1825	IPTS	Institute for Prospective Technological Studies
1826	IPTV	Internet Protocol TeleVision
1827	IPW	Interrogation of Prisoners of War
1828	Ir	Iridium
1829	IRAD	Internal Research and Development
1830	IRAN	(I) Inspect and Repair As Necessary
1831	IRAS	Infrared Astronomical Satellite
1832	IRB	International Rugby Board
1833	IRBM	Intermediate Range Ballistic Missile
1834	IREA	Intermountain Rural Electric Association
1835	IRINN	Islamic Republic of Iran News Network
1836	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1837	IRN	Iran (ISO 3166 trigram)
1838	IRO	International Refugee Organisation
1839	IRQ	Iraq (ISO 3166 trigram)
1840	IRS	U.S. Internal Revenue Service
1841	IRST	Infra-red Search and Track
1842	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1843	ISAR	Inverse SAR (Synthetic Aperture Radar)
1844	ISB	Intermediate Staging Base
1845	ISBN	International Standard Book Number (ISO 2108)
1846	ISCCP	International Satellite Cloud Climatology Project
1847	ISCII	Indian Standard Code for Information Interchange
1848	ISDN	Integrated Services Digital Network
1849	ISEF	Intel International Science and Engineering Fair
1850	ISEN	Internet Search Environment Number
1851	ISF	Internal Security Force
1852	ISIL	Islamic State of Iraq and the Levant
1853	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1854	ISL	Iceland (ISO 3166 trigram)
1855	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1856	ISMB	International Society of Matrix Biologists
1857	ISMC	Intelligent Sounding Meaningless Conversation
1858	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1859	ISPE	International Society for Pharmacoepidemiology
1860	ISRO	Indian Space Research Organisation
1861	ISSCR	International Society for Stem Cell Research
1862	ISSN	International standard serial number (ISO 3297)
1863	ISTC	Institute of Scientific and Technical Communications (UK)
1864	ISTS	Intel Science Talent Search
1865	ITA	Italy (ISO 3166 trigram)
1866	ITAG	Inertial Terrain-Aided Guidance
1867	ITALY	I'll Truly Always Love You
1868	ITAS	Improved Target Acquisition Sight
1869	ITC	InferoTemporal Cortex (neurophysiology)
1870	ITCZ	Intertropical Convergence Zone
1871	ITEC	Information Technology Exposition & Conference
1872	ITEMS	Interactive Tactical Environment Management System
1873	ITER	International Thermonuclear Experimental Reactor
1874	ITF	International Tennis Federation
1875	ITK	In The Know
1876	ITN	Independent Television News (British)
1877	ITT	International Telephone and Telegraph (U.S.)
1878	ITTO	International Tropical Timber Organization
1879	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1880	Iveco	Industrial Vehicles Corporation
1881	IVF	In Vitro Fertilisation
1882	IVI	Interchangeable Virtual Instrument
1883	IVIS	Inter-Vehicle Information System
1884	IVL	Inter-Visibility Line
1885	IVM	In Vitro [Oocyte] Maturation
1886	IVO	In Vicinity Of
1887	IW	Information Warfare
1888	IWARS	Infantry Warrior Simulation
1889	IWC	International Whaling Commission
1890	IWW	Industrial Workers of the World
1891	IX	Nine (in Roman numerals)
1892	IXT	IntraText digital library; IntraText lexical hypertext
1893	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1894	IZ	Iraq (FIPS 10-4 country code)
1895	J	Joule
1896	J1	Joint [Manpower &] Personnel Directorate
1897	J2	Joint Intelligence Directorate
1898	J3	Joint Operations Directorate
1899	J4	Joint Logistics Directorate
1900	J5	Joint Strategic Plans & Policy Directorate
1901	J7	Joint Operational Plans & Interoperability Directorate
1902	JA	Japan (FIPS 10-4 country code)
1903	JAFT	Just A Field Test
1904	JAL	Japan Airlines
1905	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1906	JAM	Jamaica (ISO 3166 trigram)
1907	JAMA	Journal of the American Medical Association
1908	JANET	Joint Academic Network
1909	JATO	Jet-Assisted Take-Off
1910	JB	Jail Bait
1911	JB	Junior Branch
1912	JBFSA	Joint Blue Force Situational Awareness
1913	JCDB	Joint Common Data Base
1914	JCDS	Joint Chiefs of the Defence Staff
1915	JCIDS	Joint Capabilities Integration and Development System
1916	JCL	Job Control Language
1917	JCP	Java Community Process
1918	JCS	Joint Chiefs of Staff
1919	JCW	Juggalo Championship Wrestling
1920	JDBC	Java Data Base Connectivity
1921	JDEM	Joint Dark Energy Mission
1922	JDL	Jewish Defense League
1923	JE	Jersey (FIPS 10-4 territory code)
1924	JEFX	Joint Expeditionary Force eXperiment
1925	JET	Joint European Torus
1926	JEZ	Joint Engagement Zone
1927	JFACC	Joint Force Air Component Commander
1928	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1929	JFC	Joint Force Commander
1930	JFK	John Fitzgerald Kennedy or the airport named after him.
1931	JFLCC	Joint Force Land Component Commander
1932	JFMCC	Joint Force Maritime Component Commander
1933	JFO	Journal of Field Ornithology
1934	JFSOCC	Joint Force Special Operations Component Commander
1935	JFTX	Joint Field Training Exercise
1936	JH	Japan Highway Public Corporation
1937	JH	Jharkhand (Indian state code)
1938	JI	Joint Implementation
1939	JIB	Joint Information Bureau
1940	JIC	Joint Intelligence Centre
1941	JINI	Java Intelligent Network Infrastructure
1942	JITC	Joint Interoperability Test Command
1943	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1944	JJAP	Japanese Journal of Applied Physics
1945	JL	Japan Airlines (IATA airline designator)
1946	JLA	Justice League of America
1947	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1948	JMS	Java Message Service
1949	JN	Jan Mayen Island (FIPS 10-4 territory code)
1950	JNI	Java Native Interface
1951	JNLP	Java Network Launch Protocol
1952	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1953	JOA	Joint Operations Area
1954	JOPES	Joint Operations Planning and Execution System
1955	JOR	Jordan (ISO 3166 trigram)
1956	JOTS	Joint Operations Tactical System
1957	JPL	Jet Propulsion Laboratory
1958	JPN	Japan (ISO 3166 trigram)
1959	JPOW	Joint Project Optic Windmill
1960	JRDF	Joint Rapid Deployment Forces
1961	JRE	Java Runtime Environment
1962	JREF	James Randi Educational Foundation
1963	JROC	Joint Requirements Oversight Council
1964	JROCM	JROC Memorandum
1965	JRRF	Joint Rapid Reaction Force
1966	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1967	JSAP	Japan Society of Applied Physics
1968	JSCSC	Joint Services Command and Staff College
1969	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
1970	JSF	Joint Strike Fighter
1971	JSIMS	Joint Simulation System
1972	JSOA	Joint Special Operations Area
1973	JSOTF	Joint Special Operations Task Force
1974	JSP	JavaServer Page
1975	JSP	Joint Services Publication
1976	JSR	Java Specification Request
1977	JSS	Joint Support Ship Project
1978	JTC	Joint Training Confederation
1979	JTF	Joint Task Force
1980	JTFEX	Joint Task Force Exercise
1981	JTLS	Joint Theater Level Simulation
1982	JTMD	Joint Theatre Missile Defence
1983	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
1984	JU	Juan de Nova Island (FIPS 10-4 territory code)
1985	JUGFET	JUnction Gate Field-Effect Transistor
1986	JUICE	JUpiter ICy Moon Explorer
1987	JUO	Joint Urban Operations
1988	JV	Joint Venture,Junior Varsity
1989	JW	Jehovah's Witnesses
1990	JWARS	Joint Warfare System (simulation)
1991	JWP	Joint Warfare Publication
1992	JY	Japanese Yen
1993	JZ	Joint Zone
1994	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
1995	k	Kilo-
1996	K	picokelvin
1997	K9	Canine Police Unit
1998	Ka	Kamov Design Bureau
1999	kA	Kiloampere
2000	KA	Knowledge Acquisition,Karnataka (Indian state code)
2001	KAF	Kandahar Air Field
2002	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2003	KARNAC	Knowledge Aided Retrieval in Activity Context
2004	KARR	Knight Automated Roving Robot (Knight Rider character)
2005	KATUSA	Korean Augmentation To United States Army
2006	KAZ	Kazakhstan (ISO 3166 trigram)
2007	KBE	Knight Commander of the Order of the British Empire
2008	KBO	Kuiper Belt Object
2009	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2010	kC	Kilocoulomb
2011	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2012	KCL	King's College London
2013	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2014	KCS	Kansas City Southern Railway (AAR reporting mark)
2015	KD	Kawasaki Disease,Kraft Dinner
2016	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2017	KEDO	Korean Peninsula Energy Development Organization
2018	KEN	Kenya (ISO 3166 trigram)
2019	KERA	Kentucky Education Reform Act (of 1990)
2020	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2021	KESR	Kent and East Sussex Railway.
2022	KET	Kentucky Educational Television,Key English Test
2023	kF	Kilofarad
2024	KFC	Kentucky Fried Chicken
2025	KFOR	UN Kosovo Force
2026	KFUPM	King Fahd University of Petroleum & Minerals
2027	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2028	KGO	Knight of the Guelphic Order of Hanover
2029	KGZ	Kyrgyzstan (ISO 3166 trigram)
2030	KH	Cambodia (ISO 3166 digram)
2031	kH	Kilohenry
2032	KHL	Kontinental Hockey League
2033	KHM	Cambodia (ISO 3166 trigram)
2034	KHz	Kilohertz
2035	Ki	Kibi
2036	KI	Kiribati (ISO 3166 digram)
2037	KIA	Killed In Action
2038	KIDS	Knowledge-based Integrated Design System
2039	KIR	Kiribati (ISO 3166 trigram)
2040	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2041	KIT	Keep In Touch
2042	KITECH	Korean Institute of Industrial Technology
2043	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2044	kJ	Kilojoule
2045	kK	Kilokelvin
2046	KKK	Ku Klux Klan
2047	kL	Kilolitre
2048	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2049	KLOC	Kilo Lines Of Code
2050	KM	Comoros,Knowledge Management
2051	kN	Kilonewton
2052	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2053	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2054	KO	Knocked Out
2055	KOR	Republic of Korea (ISO 3166 trigram)
2056	KP	Kim Possible
2057	KPMG	Klynveld,Peat,Marwick,Goerdeler
2058	KPNO	Kitt Peak National Observatory
2059	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2060	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2061	Kr	Krypton
2062	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2063	kS	Kilosiemens
2064	KSC	Kennedy Space Center
2065	KSI	Killed or Seriously Injured
2066	KSU	Kansas State University
2067	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2068	kT	Kilotesla
2069	KTS	Knight of the Tower and Sword (of Portugal)
2070	KU	Kuwait (FIPS 10-4 country code)
2071	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2072	kV	Kilovolt
2073	KV	Kosovo
2074	kW	Kilowatt
2075	KW	Kuwait (ISO 3166 digram)
2076	KWB	Kids' WB!
2077	KWT	Kuwait (ISO 3166 trigram)
2078	KX	Cayman Airways (IATA airline designator)
2079	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2080	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2081	KZN	KwaZulu-Natal
2082	La	Lanthanum
2083	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2084	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2085	LAB	Logistics Assault Base
2086	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2087	LACMA	Los Angeles County Museum of Art
2088	LAD	Laser Aiming Device
2089	LADW	Local Air Defence Warning
2090	LAESI	Local Authority & Emergency Service Information
2091	LAN	Local Area Network
2092	LANL	Los Alamos National Laboratory
2093	LAO	Laos (ISO 3166 trigram)
2094	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2095	LARC	Livermore Advanced Research Computer (cf. LLNL)
2096	LARP	Live-Action Role-Playing
2097	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2098	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2099	LATA	Local Access Transport Area
2100	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2101	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2102	LAW	Light Antitank Weapon
2103	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2104	LB	Lebanon (ISO 3166 digram)
2105	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2106	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2107	LBN	Lebanon (ISO 3166 trigram)
2108	LBNL	Lawrence Berkeley National Laboratory
2109	LBR	Liberia (ISO 3166 trigram)
2110	LBS	Location-Based Services
2111	LBT	Large Binocular Telescope
2112	LBW	Leg Before Wicket
2113	LBY	Libya (ISO 3166 trigram)
2114	LCA	Saint Lucia (ISO 3166 trigram)
2115	LCC	Land Component Commander
2116	LCCP	Light Contingency Communications Package
2117	LCD	Liquid Crystal Display
2118	LCM	Least/Lowest Common Multiple
2119	LCS	League of Legends Championship Series
2120	LDA	Lateral Drift Apparatus (paratroops)
2121	LDC	Lesser Developing/Developed Country
2122	LDL	Low-Density Lipoprotein
2123	LDV	Local Defence Volunteers (British Home Guard)
2124	LDW	Lane Departure Warning (ADAS)
2125	LE	Lebanon (FIPS 10-4 country code)
2126	LEC	Local Exchange Carrier
2127	LED	Light-Emitting Diode
2128	LEGAD	Legal Advice
2129	Legs	level emotion gad speed
2130	LEMOSS	Long-Endurance MObile Submarine Simulator
2131	LEN	Large Extension Node
2132	LEP	Large Electron-Positron collider
2133	LER	Loss-Exchange Ratio
2134	LEU	Low-Enriched Uranium
2135	LF	Low Frequency
2136	LFO	Low Frequency Oscillation / Oscillator
2137	LFTR	Liquid fluoride thorium reactor
2138	LG	Latvia (FIPS 10-4 country code)
2139	LGM	Little Green Men
2140	LGS	Landsat Ground Station
2141	LHC	Large Hadron Collider
2142	LHS	Left Hand Side
2143	Li	Lithium
2144	LIBOR	London Interbank Offered Rate
2145	LIBS	Laser Induced Breakdown Spectroscopy
2146	LIE	Liechtenstein (ISO 3166 trigram)
2147	LIGO	Laser Interferometer Gravitational-Wave Observatory
2148	LINEAR	Lincoln Near-Earth Asteroid Research
2149	LISA	Laser Interferometer Space Antenna
2150	LIVE	Liquid Inertial Vibration Eliminator
2151	LJJ	Lord Justices of Appeal
2152	LK	Sri Lanka (ISO 3166 digram)
2153	LKA	Sri Lanka (ISO 3166 trigram)
2154	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2155	LLAD	Low Level Air Defence
2156	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2157	LLC	Limited Liability Company
2158	LLLTV	Low-Light Level Television
2159	LLNL	Lawrence Livermore National Laboratory
2160	LLP	Limited Liability Partnership
2161	LLTR	Low-Level Transit Route
2162	LMAO	Laughing My Ass Off (Internet shorthand)
2163	LMB	Lick My Balls
2164	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2165	LMN	Lifetime Movie Network
2166	LMS	Like My Status (Internet shorthand)
2167	LMV	() Light Motor Vehicle
2168	LNER	London and North Eastern Railway
2169	LNG	Liquefied Natural Gas
2170	LNO	Liaison Officer
2171	LO	Slovakia (FIPS 10-4 country code)
2172	LOA	Limit Of Advance
2173	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2174	LoD	Lines of Development (UK)
2175	LOFAR	Low Frequency Analysis and Recording
2176	LOGPAC	Logistics Package
2177	LOL	Laughing Out Loud (Internet shorthand)
2178	LOMEZ	Low Altitude Missile Engagement Zone
2179	LONEOS	Lowell Observatory Near-Earth-Object Search
2180	LORTID	LOng Range Target IDentification
2181	LOS	Line Of Sight
2182	LOSAT	Line-Of-Sight Anti-Tank (missile)
2183	LOTA	Licentiate of the Orthodontic Technicians Association
2184	LOTIS	Livermore Optical Transient Imaging System
2185	LOTS	Logistics Over-The-Shore
2186	LPC	Linear Predictive Coding
2187	LPG	Liquefied Petroleum Gas (cf. LNG)
2188	LPI	Low Probability of Intercept
2189	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2190	Lr	Lawrencium
2191	LR	Liberia (ISO 3166 digram)
2192	LRC	Logistics iness Center
2193	LRGW	Long-Range Guided Weapon
2194	LRICBM	Limited Range ICBM
2195	LRIP	Low Rate Initial Production
2196	LRP	Logistics Release Point
2197	LRPE	Long-Range Planning Element
2198	LRS	Long Range Surveillance
2199	LRU	Line-Replaceable Unit
2200	LSI	Large-Scale Integration
2201	LSIF	Labour Sponsored Investment Fund
2202	LSND	Liquid Scintillator Neutrino Detector
2203	LSO	Lesotho (ISO 3166 trigram)
2204	LSST	Large Synoptic Survey Telescope
2205	Lt	Lieutenant
2206	LtC	Lieutenant-Colonel (U.S.)
2207	LTC	Long-Term Costing
2208	Ltd	Limited
2209	LTDP	Long-Term Defence Plan
2210	LTI	Linear Time-Invariant
2211	LTM	Acronym for Laughing To Myself
2212	LTP	Long-Term Potentiation
2213	LTU	Lithuania (ISO 3166 trigram)
2214	LU	Acronym Love You
2215	LU	Loonatics Unleashed
2216	Lu	Lutetium
2217	LUCA	Last Universal Common Ancestor
2218	LUG	Linux User Group
2219	LULU	Locally Unwanted Land Use (urbanism)
2220	LUX	Luxembourg (ISO 3166 trigram)
2221	LVA	Latvia (ISO 3166 trigram)
2222	LVEF	Left Ventricular Ejection Fraction
2223	Lw	Lawrencium (obsolete 1963)
2224	LWR	Laser warning receiver
2225	LWRC	Land Warfare Resources Corporation
2226	LWS	Land Warrior System
2227	LX	Electrics (theatrical term)
2228	LYAO	Laugh Your Ass Off
2229	LYLAS	Love You Like A Sister
2230	Ma	Megaannum
2231	mA	Milliampere
2232	MAA	Mathematical Association of America
2233	MAAC	Metro Atlantic Athletic Conference
2234	MACE	Multi-Agent Computing Environment
2235	MACHO	MAssive Compact Halo Object
2236	MAF	Maintenance Action Form
2237	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2238	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2239	MAGTF	Marine Air-Ground Task Force
2240	MALD	Miniature Air-Launched Decoy
2241	MANPADS	MAN-Portable Air Defence System
2242	MANPRINT	MANpower and PeRsonnel INTegration
2243	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2244	MAOI	Monoamine oxidase inhibitor
2245	MAPS	Monitoring Avian Productivity and Survivorship
2246	MAR	Morocco (ISO 3166 trigram)
2247	MarBEF	Marine Biodiversity and Ecosystem Functioning
2248	MARCENT	United States Marine Forces Central Command
2249	MARFORCC	Marine Force Component Commander
2250	MASAS	Monte Agliale Supernovae and Asteroid Survey
2251	Maser	Microwave Amplification by Stimulated Emission of Radiation
2252	MASH	Mobile Army Surgical Hospital
2253	MASINT	Measurement And Signature Intelligence
2254	MAVS	Mobile Artillery Vehicle System
2255	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2256	MBCC	Migratory Bird Conservation Commission (U.S.)
2257	MBCS	Multi-Byte Character Set
2258	MBI	Moody Bible Institute
2259	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2260	MBM	Meat and Bone Meal
2261	MBT	Main Battle Tank
2262	MBTI	Myers-Briggs Type Indicator
2263	mC	Millicoulomb
2264	MCDL	Model Composition Definition Language
2265	MCFT	Modified Compression Field Theory
2266	MCG	Melbourne Cricket Ground
2267	MCIS	Mellon Collie and the Infinite Sadness
2268	MCM	Mine Counter-Measures
2269	MCMV	Mine Counter-Measure Vessel
2270	MCR	My Chemical Romance
2271	MCSF	Marine Corps Security Forces
2272	MCT	Movement Control Team
2273	MCTIS	Mounted Co-operative Target Identification System
2274	Md	Mendelevium
2275	MDNA	Madonna's 12th studio album title (2012)
2276	MDO	Membership Driven Organisation
2277	MDP	Markov Decision Process
2278	MDT	Mountain Daylight Time (UTC-6 hours)
2279	MDV	Maldives (ISO 3166 trigram)
2280	Me	Messerschmitt
2281	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2282	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)
2283	MEDEVAC	Medical evacuation
2284	MEDS	Mission Essential Data Set
2285	MEG	MagnetoEncephaloGraphy
2286	MELT	Metallic Line/Loop Test (ing)
2287	MEMS	Microelectromechanical System
2288	MER	Mars Exploration Rover
2289	MERL	Mitsubishi Electric Research Laboratories
2290	MES	Manufacturing Execution Systems
2291	METAR	[Meteorological] Aviation Routine weather report
2292	METOC	Meteorological and Oceanographic
2293	MeV	Megaelectronvolt
2294	MEX	Mexico (ISO 3166 trigram)
2295	MEZ	Missile Engagement Zone
2296	mF	Millifarad
2297	MGPAM	My Gym Partner's a Monkey
2298	MGS	Mobile Gun System
2299	mH	Millihenry
2300	MHC	Major Histocompatibility Complex
2301	MHHW	Mean Higher High Water (nautical charts)
2302	MHL	Marshall Islands (ISO 3166 trigram)
2303	MHLW	Mean Higher Low Water (nautical charts)
2304	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2305	MHW	Mean High Water (nautical charts)
2306	MHWN	Mean High Water Neaps (nautical charts)
2307	MHWS	Mean High Water Springs (nautical charts)
2308	MHz	Megahertz
2309	Mi	Mebi
2310	MIA	Missing In Action
2311	MICLIC	Mine Clearing Line Charge
2312	MICOM	Missile Command
2313	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2314	MIDAS	Man-machine Integration Design and Analysis System
2315	MIDI	Musical Instrument Digital Interface
2316	MIDS	Multi-Function Information Distribution System
2317	MIFG	Shallow Fog (METAR Code)
2318	MIKE	Monitoring of Illegal Killing of Elephants
2319	MIL	Man-In-the-Loop
2320	MILC	Mirrorless interchangeable-lens camera
2321	MILF	Mother I'd Like to Fuck
2322	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2323	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2324	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2325	MIRV	Multiple Independent Reentry Vehicle
2326	MISREP	Mission Report
2327	MISSI	Multilevel Information System Security Initiative
2328	MITL	Man-In-The-Loop
2329	MITS	see entry
2330	mJ	Millijoule
2331	MJD	Modified Julian Day
2332	mK	Millikelvin
2333	MKG	Michael Kidd-Gilchrist (American basketball player)
2334	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2335	mL	Millilitre
2336	MLB	Major League Baseball
2337	MLC	Member of the Legislative Council (in India)
2338	MLE	Maximum likelihood estimation
2339	MLHW	Mean Lower High Water (nautical charts)
2340	MLI	Mali (ISO 3166 trigram)
2341	MLL	Major League Lacrosse
2342	MLLW	Mean Lower Low Water (nautical charts)
2343	MLP	My Little Pony
2344	MLRS	Multiple-Launch Rocket System
2345	MLT	Malta (ISO 3166 trigram)
2346	MLW	Mean Low Water (nautical charts)
2347	MLWN	Mean Low Water Neaps (nautical charts)
2348	MLWS	Mean Low Water Springs (nautical charts)
2349	Mm	Megametre
2350	mm	Millimetre
2351	MMEV	Multi-Mission Effects Vehicle
2352	MMI	Magical MonkeyZ Inc.
2353	MMI	Man-Machine Interface
2354	MMI	McLean Meditation Institute
2355	MMIC	McLean Meditation Institute Certified
2356	MMO	Massively Multiplayer Online (computer game)
2357	MMOR	Master of Management in Operations Research
2358	MMORPG	Massively multiplayer online role-playing game
2359	MMPR	Mighty Morphin Power Rangers
2360	MMS	Multimission Modular Spacecraft
2361	Mn	Manganese
2362	mN	Millinewton
2363	MNB	Multinational Brigade
2364	MNE	Montenegro (ISO 3166 trigram)
2365	MNMF	Multi-National Maritime Force
2366	MNP	Northern Mariana Islands (ISO 3166 trigram)
2367	MNS	Mission Needs Statement
2368	Mo	Molybdenum
2369	MOA	Museum of Art (Brigham Young University)
2370	MOCAS	Mechanization Of Contract Administration Services
2371	MoD	Ministry of Defence (United Kingdom) and various other countries
2372	modem	Modulator-Demodulator
2373	Moe	Marvel of entertainment
2374	MOE	Measure Of Effectiveness
2375	MOF	Ministry of Finance (Japan)
2376	MOFA	Ministry of Foreign Affairs (Japan)
2377	MOID	Minimum Orbital Intersection Distance
2378	MOJWA	Movement for Oneness and Jihad in West Africa
2379	MOLO	Mobile Other Licensed Operator (UK)
2380	MOM	Master's Degree in Oriental medicine
2381	MOM	Message Oriented Middleware
2382	MoM	Multiple of the median
2383	MoMA	Museum of Modern Art (NYC)
2384	MOND	Modified Newtonian Dynamics
2385	MOO	Measure Of Outcome
2386	MOPP	Mission-Oriented Protective Posture
2387	MORP	Meteorite Observation and Recovery Project
2388	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2389	MOT	Ministry of Transport (UK)
2390	MOTA	Member of the Orthodontic Technicians Association
2391	MOTESS	Moving Object and Transient Event Search System
2392	MOU	Memorandum Of Understanding
2393	MOW	Maintenance of way (also MW)
2394	MOZ	Mozambique (ISO 3166 trigram)
2395	MPa	Megapascal
2396	mPa	Millipascal
2397	MPAA	Motion Picture Association of America
2398	MPEC	Minor Planet Electronic Circular
2399	MPEG	Motion Pictures (Coding) Experts Group
2400	MPEV	Multi-Purpose Engineering Vehicle
2401	MPF	Maritime Prepositioning Force
2402	MPFC	Medial PreFrontal Cortex
2403	MPG	Miles Per Gallon
2404	MPMC	Medial PreMotor Cortex
2405	MPSI	Member of the Pharmaceutical Society of Ireland
2406	MPSoC	MultiProcessor System-on-Chip
2407	MPSRON	Maritime Propositioning Ship Squadron
2408	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2409	MRAV	Multi-Role Armoured Vehicle
2410	MRBM	Medium Range Ballistic Missile
2411	MRC	Maintenance Requirements Card
2412	MRD	Motorized Rifle Division
2413	MRGW	Medium-Range Guided Weapon
2414	MRI	Magnetic Resonance Imaging
2415	MRL	Multiple Rocket Launcher
2416	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2417	MRS	Magnetic Resonance Spectroscopy
2418	MRSA	Methicillin-resistant Staphylococcus aureus
2419	MRTFB	U.S. Major Range and Test Facility Base
2420	Ms	Megasecond
2421	mS	Millisiemens
2422	MSD	Minimum Safe Distance
2423	MSDB	Multi Source Data Base
2424	MSE	Multiple Subscriber Element
2425	MSG	Message
2426	MSLP	Mean Sea Level Pressure
2427	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2428	MSO	Multiple System Operator
2429	MSPB	Merit Systems Protection Board
2430	MSSA	Methicillin-susceptible Staphylococcus aureus
2431	Mt	Meitnerium
2432	mT	Millitesla
2433	MTBF	Mean time between failures
2434	MtF	Male-to-female transsexual
2435	MTG	Magic: The Gathering
2436	MTQ	Martinique (ISO 3166 trigram)
2437	MTT	Methylthiazol tetrazolium (assay)
2438	MTWS	MAGTF Tactical Warfare System
2439	MUS	Mauritius (ISO 3166 trigram)
2440	mV	Millivolt
2441	MVC	Missouri Valley Conference
2442	MVFC	Missouri Valley Football Conference
2443	MVNO	Mobile virtual network operator
2444	mW	Milliwatt
2445	MWESH	Machismo Wizards Extended SHelter (operating system)
2446	MWI	Malawi (ISO 3166 trigram)
2447	MWOA	Mount Wilson Observatory Association
2448	MWTB	Mounted Warfare Test Bed
2449	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2450	MYOB	Mind Your Own Business
2451	MYS	Malaysia (ISO 3166 trigram)
2452	MYT	Mayotte (ISO 3166 trigram)
2453	n	Nano
2454	N3F	National Fantasy Fan Federation
2455	nA	Nanoampere
2456	Na	Sodium (Latin Natrium)
2457	NAA	N-Acetylaspartate
2458	NAAD	North American Air Defense
2459	NAAQS	National Ambient Air Quality Standards
2460	NAAWS	NATO Anti-Air Warfare System
2461	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2462	NACC	North Atlantic Cooperation Council
2463	NACISA	NATO Communications and Information Systems Agency
2464	NACMA	NATO Air Command and Control System Management Agency
2465	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2466	NAEC	U.S. Naval Air Engineering Center
2467	NAFERA	Native American Free Exercise of Religion Act
2468	NAFLD	NonAlcoholic Fatty Liver Disease
2469	NAFO	Northwest Atlantic Fisheries Organization
2470	NAFTA	North American Free Trade Agreement
2471	NAGPRA	Native American Graves Protection and Repatriation Act
2472	NAICS	North American Industry Classification System
2473	NAIL	Neurotics Anonymous
2474	NAILS	National Airspace Integrated Logistics System
2475	NAIRU	Non Accelerating Inflation Rate of Unemployment
2476	NAK	Negative Acknowledge
2477	NAM	Namibia (ISO 3166 trigram)
2478	NAMBLA	North American Man-Boy Love Association
2479	NAMRL	Naval Aerospace Medical Research Laboratory
2480	NaN	Not A Number (computing)
2481	NAO	UK National Audit Office
2482	NAPS	Navy Acquisition Procedures Supplement
2483	NARA	(U.S.) National Archives and Records Administration
2484	NARAL	National Abortion Rights Action League
2485	NARDAC	Naval Regional Data Automation Center
2486	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2487	NARPV	National Association for Remotely Piloted Vehicles
2488	NASCAR	National Association for Stock Car Auto Racing
2489	NASDAQ	National Association of Securities Dealers Automated Quotations
2490	NASED	National Association of State Election Directors [1][2]
2491	NASH	Non-Alcoholic Steatohepatitis
2492	NASP	National Aerospace Plane
2493	NASS	National Association of Secretaries of State [3]
2494	NatGeo	National Geographic
2495	NaUKMA	National University of Kyiv-Mohyla Academy
2496	NAV	Navigation[al]
2497	NAVCAMS	Naval Communications Area Master Station
2498	NAVCC	National Audio-Visual Conservation Center
2499	NAVCENT	Naval Forces U.S. Central Command
2500	NAVDAC	Naval Data Automation Command
2501	NAVEUR	Naval Forces U.S. European Command
2502	NAVFOR	Naval Force
2503	NAVMACS	Naval Modular Automatic Communication Subsystem
2504	NAVNET	Navy Network
2505	NAVS	Non-Cooperative Airborne Vector Scoring
2506	NAVSAT	Navigation Satellite
2507	NAVSPACECOM	U.S. Navy Space Command
2508	NAVSPASUR	U.S. Naval Space Surveillance System
2509	NAVSTAR	Navigation Satellite Timing And Ranging
2510	NAVTACNET	Navy Tactical Network
2511	NAWC	U.S. Naval Air Warfare Center
2512	Nb	Niobium
2513	NBA	National Basketball Association
2514	NBL	National Basketball League (Australia)
2515	NBT	Nitroblue tetrazolium (assay)
2516	nC	Nanocoulomb
2517	NCA	National Command Authority
2518	NCAR	U.S. National Center for Atmospheric Research
2519	NCB	National Codification Bureau
2520	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2521	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2522	NCDDR	U.S. National Center for the Dissemination of Disability Research
2523	NCI	U.S. National Cancer Institute
2524	NCL	New Caledonia (ISO 3166 trigram)
2525	NCLR	National Council of La Raza
2526	NCMO	No Commitment Make Out
2527	NCO	Non-Commissioned Officer
2528	NCP	Net Contracted Purchases
2529	NCR	National Cash Register Co.
2530	NCTR	Non-Co-operative Target Recognition
2531	NCW	Network Centric Warfare
2532	Nd	Neodymium
2533	NDAA	U.S. National Defense Authorization Act
2534	NDBP	Non-Departmental Public Body (Scotland)
2535	NDP	New Democratic Party (Canada)
2536	NDS	Nintendo DS
2537	Ne	Neon
2538	NECTEC	National Electronics and Computer Technology Center (Thailand)
2539	NEMS	National Energy Modeling System (USDOE-EIA)
2540	NEPA	National Environmental Policy Act
2541	NER	Niger (ISO 3166 trigram)
2542	NERICA	New Rice for Africa
2543	NESP	NSA/CSS Enterprise Standards Program
2544	NET	National Educational Television
2545	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2546	NETL	(US) National Energy Technology Laboratory
2547	NETWARS	Network Warfare Simulation
2548	NEX	Navy EXchange
2549	nF	Nanofarad
2550	NF	Norfolk Island (ISO 3166 digram)
2551	NFER	National Foundation for Educational Research
2552	NFG	No Fucking Good
2553	NFHS	National Federation of State High School Associations
2554	NFI	Not F****** Interested
2555	NFK	Norfolk Island (ISO 3166 trigram)
2556	Nfld	Newfoundland
2557	NFPA	National Fluid Power Association (United States)
2558	NFT	No Further Text
2559	NGATS	New Generation Army Targetry System
2560	NGH	Northern General Hospital
2561	NGO	non-governmental organization
2562	NGS	Naval Gunfire Support
2563	nH	Nanohenry
2564	NHANES	National Health and Nutrition Examination Survey
2565	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2566	NHB	No Holds Barred radio (Link)
2567	NHL	National Hockey League
2568	NHRA	National Hot Rod Association
2569	NHS	National Health Service (UK)
2570	Ni	Nickel
2571	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2572	NIAG	NATO Industrial Advisory Group
2573	NIAID	National Institute of Allergies and Infectious Disease
2574	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2575	NIB	New In Box (Internet auction/trading listings)
2576	NIBP	Non-invasive blood pressure monitor
2577	NicA	Nicotine Anonymous
2578	NICAP	National Investigations Committee on Aerial Phenomena
2579	NICE	UK. National Institute for Health and Clinical Excellence
2580	NICHD	National Institute of Child Health and Human Development [4]
2581	NICP	National Inventory Control Point
2582	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2583	NIDRR	National Institute on Disability Research and Rehabilitation
2584	NIEHS	National Institute of Environmental Health Sciences
2585	NIIN	National Item Identification Number
2586	NIMA	National Imagery and Mapping Agency (became NGA)
2587	NIMBY	Not In My Back Yard (See NOME)
2588	NIMG	Not In My Generation
2589	NIN	Nine Inch Nails (band)
2590	NIPR	National Institute of Polar Research (Japan)
2591	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2592	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2593	NISCAP	NSA Information System Certification and Accreditation Program
2594	NISER	National Institute of Science Education and Research
2595	NIST	National Institute of Standards and Technology
2596	NITFS	National Imagery Transmission Format Standard
2597	NIU	Niue (ISO 3166 trigram)
2598	nJ	Nanojoule
2599	NJ	New Jersey (postal symbol)
2600	NJHS	National Junior Honor Society
2601	NJPW	New Japan Pro Wrestling
2602	nK	Nanokelvin
2603	NKA	No Known Allergies
2604	nL	Nanolitre
2605	NLB	Non-Linear Battlefield
2606	NLD	Netherlands (ISO 3166 trigram)
2607	NLF	National Liberation Front (disambiguation)
2608	NLL	National Lacrosse League
2609	NLW	Non-Lethal Weapon
2610	nm	Nanometre
2611	NM	New Mexico (postal symbol)
2612	NMCI	Navy Marine Corps Intranet
2613	NMCS	Not Mission Capable Supply (SM&R code)
2614	NMD	U.S. National Missile Defense
2615	NMN	No middle name
2616	NMR	Nuclear Magnetic Resonance
2617	NMSG	NATO Modelling and Simulation Group
2618	nN	Nanonewton
2619	NNE	North North-East
2620	NNSA	U.S. National Nuclear Security Administration
2621	NNW	North North-West
2622	No	Nobelium
2623	NOAA	U.S. National Oceanic and Atmospheric Administration
2624	NOAF	Norwegian Air Force
2625	NOAO	National Optical Astronomy Observatory
2626	NOC	UK. National Oceanography Centre
2627	NODEF	NATO Oceanographic Data Exchange Format
2628	NOGI	New Orleans Grande Isle (award for diving)
2629	NOLF	Navy OutLying Field
2630	NOME	Not on Mars Either
2631	NOME	Not on Mars Either (see NIMBY)
2632	NOR	Norway (ISO 3166 trigram)
2633	NORELPREF	No religious preference
2634	NORTHAG	Northern Army Group
2635	NOSA	NATO OSI Security Architecture
2636	NOTAFLOF	No One Turned Away For Lack Of Funds
2637	NOW	National Organization for Women
2638	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2639	NPB	Nippon Professional Baseball
2640	NPCS	Non-Passenger Coaching stock (in Railways)
2641	NPD	Nationaldemokratische Partei Deutschlands (German)
2642	NPDI	New Product Development and Introduction
2643	NPG	Needline/Network Participation Group
2644	NPH	Normal Pressure Hydrocephalus
2645	NPO	nothing by mouth
2646	NPOV	Neutral Point Of View
2647	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2648	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2649	NRA	National Rifle Association
2650	NRAO	National Radio Astronomy Observatory
2651	NRDC	(U.S.) Natural Resources Defense Council
2652	NREL	U.S. National Renewable Energy Laboratory
2653	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2654	NRMP	National Resident Matching Program (U.S. medicine)
2655	NRO	U.S. National Reconnaissance Office
2656	NRT	Near Real Time
2657	NRU	Nauru (ISO 3166 trigram)
2658	ns	Nanosecond
2659	nS	Nanosiemens
2660	NSABB	National Science Advisory Board for Biosecurity
2661	NSAID	Non-Steroidal Anti-Inflammatory Drug
2662	NSB	Norges Statsbaner (Norwegian State Railways)
2663	NSC	National Security Council
2664	NSDL	National Science Digital Library (US)
2665	NSG	National System for Geospatial-Intelligence
2666	NSN	National Stock Number
2667	NSNA	National Student Nurses' Association
2668	NSO	National Standardization Office (ABCA)
2669	NSS	(U.S.) Naval Simulation System
2670	NST	(UK) Nimrod Software Team
2671	NSTAC	National Security Telecommunications Advisory Committee
2672	NSW	New South Wales (postal symbol)
2673	nT	Nanotesla
2674	NTDS	Naval Tactical Data System
2675	NTP	Network Time Protocol
2676	NTR	Network Time Reference
2677	NTRA	National Thoroughbred Racing Association
2678	NTSB	National Transportation Safety Board
2679	NTV	Non-Tactical Vehicle
2680	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2681	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2682	NUTS	Nuclear Utilization Target Selection
2683	NUWC	U.S. Naval Undersea Warfare Center
2684	nV	Nanovolt
2685	NVEOL	Night Vision and Electro-Optics Laboratory
2686	NVG	Night Vision Goggles
2687	NVL	Night Vision Laboratory
2688	nW	Nanowatt
2689	NW	North-West
2690	NW	Nuclear Weapon
2691	NWA	National Wrestling Alliance
2692	NWF	National Wildlife Federation
2693	NWFZ	Nuclear-Weapon-Free Zone
2694	NWHN	U.S. National Women's Health Network
2695	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2696	NWOAHM	New Wave of American Heavy Metal
2697	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2698	NWRA	National Wildlife Rehabilitators Association
2699	NWSL	National Women's Soccer League (U.S.)
2700	NWT	North-West Territories
2701	NXA	21st arcade game in the Pump It Up series
2702	NXD	Native XML
2703	NXE	New Xbox Experience
2704	NXG	New Cross Gate station
2705	NXL	National XBall League
2706	NXN	Nike Cross Nationals
2707	NY	New York (postal symbol)
2708	NYC	New York City
2709	NYHA	New York Heart Association
2710	NYO	National Youth Orchestra of Great Britain
2711	NYSE	New York Stock Exchange
2712	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2713	NZC	New Zealand Cricket
2714	NZL	New Zealand (ISO 3166 trigram)
2715	NzL	Noze looan (online/event listings)
2716	NZOSS	New Zealand Open Source Society
2717	NZRU	New Zealand Rugby Union
2718	OAC	On Approved Credit
2719	OAP	Old Age Pensioner (UK)
2720	OARSI	Osteoarthritis Research Society International
2721	OAS	Organization of American States
2722	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2723	OASIS	Ontario Association of Sewage Industry Services
2724	OASP	Operational Analysis Support Paper/Plan
2725	OAU	Organization for African Unity
2726	OBE	Officer of the Order of the British Empire
2727	OBX	Outer Banks (North Carolina)
2728	OC	Officer Commanding
2729	OCD	Obsessive-Compulsive Disorder
2730	OCFS	Oracle Cluster File System
2731	OCFS2	Oracle Cluster File System Release 2
2732	OCMCC	[2] Orchard County MCC
2733	OCN	Oncology Certified Nurse
2734	OCO	Oort Cloud Object
2735	OCR	Optical Character Recognition
2736	OCS	see entry
2737	ODAS	OCA-DLR Asteroid Survey
2738	ODBC	Open DataBase Connectivity
2739	OEA	(U.S.) Office of Economic Adjustment
2740	OECD	Organisation for Economic Co-operation and Development (international)
2741	OED	Oxford English Dictionary
2742	OEG	Operation Exposure Guidance
2743	OEIS	On-Line Encyclopedia of Integer Sequences
2744	OEM	Original Equipment Manufacturer
2745	OFA	Occipital Face Area
2746	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2747	OGC	Open Geospatial Consortium
2748	OGD	Other Government Department
2749	OGO	Other Government Organization
2750	OH	Ohio (postal symbol)
2751	OHC	OverHead-Cam engine
2752	OHHLA	Original Hip-Hop Lyrics Archive
2753	OHIP	Ontario Health Insurance Plan
2754	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2755	OHP	Observatoire de Haute-Provence
2756	OHSS	Ovarian Hyperstimulation Syndrome
2757	OIC	Officer In Charge
2758	OIF	Operation Iraqi Freedom
2759	OIOC	Oriental & India Office Collections (in the British Library)
2760	OJT	On-the-Job Training
2761	OKC	Oklahoma City
2762	OLED	Organic Light-Emitting Diode
2763	OLS	Operational Linescan System
2764	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2765	OME	Osaka Mercantile Exchange
2766	OMFG	Oh My Fucking God
2767	OMG	Oh My God or Or My Gosh
2768	OMGW	Oh My Gosh it's Windy
2769	OMN	Oman (ISO 3166 trigram)
2770	OMNCS	U.S. Office of the Manager for the National Communications System
2771	OMP	Order of Mapungubwe in Platinum
2772	OMS	Order of Mapungubwe in Silver
2773	OMT	Object Model Template
2774	ON	Ontario (postal symbol)
2775	ONC	Orthopaedic Nurse Certified
2776	ONG	Orthodontic National Group
2777	ONI	(U.S.) Office of Naval Intelligence
2778	ONS	Operational Needs Statement
2779	OOAD	Object Oriented Analysis and Design
2780	OOBE	Out-of-body experience
2781	OOCL	Orient Overseas Container Line
2782	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2783	OOF	Out of Facility
2784	OOMF	One Of My Followers
2785	OOO	Out Of the Office
2786	OOTW	Operations Other Than War
2787	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
2788	OPAC	Online Public Access Catalogue
2789	OPCON	Operational control
2790	OPCW	Organisation for the Prohibition of Chemical Weapons
2791	OPEC	Organization of the Petroleum Exporting Countries
2792	OPFOR	Opposing force
2793	OPINTEL	Operational Intelligence
2794	OPLAN	Operation plan (also OpPlan)
2795	OPORD	Operation order
2796	OPSEC	Operations security,Open Platform for Security
2797	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2798	OPTAR	Operational target
2799	OPV	Offshore Patrol Vessel
2800	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)
2801	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
2802	ORAU	Oak Ridge Associated Universities
2803	ORB	Object Request Broker
2804	ORBAT	Order of Battle
2805	ORD	Office of Research and Development,Operational Requirements Document
2806	ORF	Operational iness Float
2807	ORISE	Oak Ridge Institute for Science and Education
2808	ORNL	Oak Ridge National Laboratory
2809	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
2810	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2811	OS	Operating System
2812	Os	Osmium
2813	OSA	Order of St. Augustine
2814	OSCE	Organisation for Security and Cooperation in Europe
2815	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2816	OSDL	Open Source Development Labs
2817	OSE	Own Separate Entrance
2818	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2819	OSETI	Optical SETI also Optical SETI
2820	OSHA	Occupational Safety and Health Administration
2821	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2822	OSIA	(U.S.) On-Site Inspection Agency
2823	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)
2824	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2825	OSM	One Saturday Morning
2826	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2827	OSPA	Operations Security Professional's Association site of OSPA
2828	OSPA	Oregon School Psychologists Association [3]
2829	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2830	OSU	Ohio State University,Oklahoma State University
2831	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2832	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2833	OTC	Over-The-Counter (drugs)
2834	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2835	OTEA	(U.S. Army) Operational Test Evaluation Agency
2836	OTI	Office of Transition Initiatives (United States Agency for International Development)
2837	OTOH	On The Other Hand
2838	OTS	Off the scale,sexually untouchable except for a lot of money
2839	OTSBH	Over The Shoulder Boulder Holder
2840	OTW	On The Way
2841	OTYBL	Over To You Blue Leader
2842	OTYRL	Over To You Red Leader
2843	OU	University of Oklahoma
2844	OW	Old Wykehamist
2845	OWN	Oprah Winfrey Network
2846	OX	IATA code for Orient Thai Airlines
2847	OXC	Optical cross-connect
2848	OXM	Official Xbox Magazine
2849	OXT	Oxytocin
2850	OZ	(?) Australia
2851	p	pico
2852	P2P	Peer-to-peer (networking)
2853	pA	picoampere
2854	PAA	Position Area for Artillery
2855	PABX	Private Automated Branch eXchange (company phone system)
2856	PACOM	(U.S.) Pacific Command
2857	PADI	Professional Association of Diving Instructors
2858	PAEK	PolyArylEtherKetone
2859	PAFC	Plymouth Argyle Football Club
2860	PAH	Polycyclic aromatic hydrocarbon
2861	PAHO	Pan American Health Organization
2862	PAK	Pakistan (ISO 3166 trigram)
2863	PAM	Precision Attack Missile
2864	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2865	PARC	Palo Alto Research Center
2866	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2867	PARP	(NATO Partnership for Peace) Planning And Review Process
2868	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2869	PAS	See entry
2870	PASR	Personnel Accounting and Strength Reporting
2871	PATH	Port Authority Trans-Hudson
2872	PAYD	Pay As You Drive
2873	PAYE	Pay As You Earn
2874	Pb	Lead (Latin Plumbum)
2875	PB	PolyButylene
2876	PBB	PolyBrominated Biphenyl
2877	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2878	PBD	PolyButaDiene
2879	PBDE	PolyBrominated Diphenyl Ether
2880	PBI	PolyBenzImidazole
2881	PBN	PolyButylene Naphthalate
2882	PBOH	Please Become Old History
2883	PBT	PolyButylene Terephthalate
2884	PBX	Private Branch eXchange (company phone system)
2885	pC	picocoulomb
2886	PCAS	Planet-Crossing Asteroid Survey
2887	PCB	see entry
2888	PCCB	Porsche Ceramic Composite Brake
2889	PCCIP	President's Commission on Critical Infrastructure Protection
2890	PCE	PerChlorEthylene
2891	PCIe	Peripheral Component Interconnect Express (computer bus)
2892	PCL	Passive Coherent Location
2893	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2894	PCN	Pitcairn Islands (ISO 3166 trigram)
2895	PCPI	Physician Consortium for Performance Improvement (AMA)
2896	PCR	Polymerase chain reaction
2897	PCSSD	Pulaski County Special School District
2898	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2899	Pd	Palladium
2900	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2901	PDL	Pure Dumb Luck (Texan punk band)
2902	PDN	Pull-Down Network
2903	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2904	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2905	PE	Professional Engineer
2906	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2907	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2908	PEEK	PolyEtherEtherKetone
2909	PEET	Partnerships for Enhancing Expertise in Taxonomy
2910	PEK	PolyEtherKetone
2911	PEPFAR	President's Emergency Plan For AIDS Relief
2912	PER	Peru (ISO 3166 trigram)
2913	perl	usually lower case Practical Extraction and Report Language
2914	PES	PolyEtherSulfone
2915	PEST	UK Public Engagement with Science and Technology
2916	PETE	PolyEthyleneTErephthalate
2917	PETP	PolyEthyleneTerePhthalate
2918	pF	picofarad
2919	PFD	Permanent Fund Dividend = personal flotation device
2920	PFE	Permanent Forest Estate
2921	PfP	Partnership for Peace
2922	Pg	petagram
2923	pg	picogram
2924	PGCE	Postgraduate Certificate in Education
2925	PGD	Pre-implantation Genetic Diagnosis
2926	PGENI	Pharmaco-Genetics for Every Nation Initiative
2927	PGH	Pre-implantation Genetic Haplotyping
2928	PGM	Precision-Guided Munition
2929	PGP	Pretty Good Privacy
2930	PHL	Philippines (ISO 3166 trigram)
2931	PHQ	Patient Health Questionnaire
2932	Pi	Pebi
2933	PIB	PolyIsoButylene
2934	PIC	Person In Charge
2935	PICNIC	Problem In Chair Not In Computer
2936	PICS	Private Investment Capital Subscription
2937	PIF	Partners in Flight
2938	PIG	Pipeline Inspection Gauge
2939	PIN	Personal Identification Number
2940	PINF	People In Need Foundation (Czech charitable organisation)
2941	PIPA	Program on International Policy Attitudes
2942	PIR	Priority Intelligence Requirement
2943	PIRA	Provisional Irish Republican Army
2944	PIREPS	Pilot Reports
2945	PITA	Pain In The Ass
2946	PJ	petajoule
2947	pJ	picojoule
2948	PJHQ	Permanent Joint Headquarters
2949	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2950	PKI	Public Key Infrastructure (cryptography)
2951	PKU	Phenylketonuria
2952	pL	picolitre
2953	PLAID	Precision Location and Identification
2954	PLB	Personal Locator Beacon
2955	PLC	Public Limited Company (British)
2956	PLCC	Plastic Leaded Chip Carrier (electronics)
2957	PLD	Probable Line of Deployment
2958	PLEBS	People Lacking Everyday Basic Skills
2959	PLF	Parachute Landing Fall
2960	PLIF	Planar Laser-Induced Fluorescence
2961	PLL	Phase-Locked Loop (electronics)
2962	PLM	Polarized Light Microscope/Microscopy
2963	PLMBA	Phospholipid Bilayer Microarray
2964	Pln	Platoon
2965	PLO	Palestine Liberation Organization
2966	PLOKTA	Press Lots Of Keys To Abort
2967	PLP	Platonic Life Partner
2968	PLUTO	Pipe Line Under The Ocean
2969	PLW	Palau (ISO 3166 trigram)
2970	pm	picometre
2971	PMC	Primary Motor Cortex
2972	PMI	Positive Material Identification
2973	PMID	PubMed Identifier
2974	PMMA	PolyMethylMethAcrylate
2975	PMS	Premenstrual Syndrome
2976	PMSL	Piss Myself Laughing (Internet shorthand)
2977	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
2978	pN	piconewton
2979	PNAC	Project for the New American Century
2980	PNVS	Pilot Night Vision Sensor
2981	Po	Polonium
2982	PO	Post Office
2983	PO	Purchase Order
2984	POCD	Post-Operative Cognitive Dysfunction
2985	pod	Plain Old Documentation
2986	POFF	Plain Old Flat File
2987	POGO	Project On Government Oversight
2988	POI	Program Of Instruction
2989	POK	Plane Of Knowledge
2990	POLAD	Political Advice
2991	POMDP	Partially observable Markov decision process
2992	PooS	Poo Sniffer (Internet shorthand)
2993	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
2994	POSH	Port Outbound Starboard Home (alleged)
2995	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
2996	POT	Plane Of Tranquility
2997	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
2998	POTUS	President of the United States
2999	POV	Point of view
3000	POW	Prisoner of war
3001	PPASC	(U.S.) Plans and Program Analysis Support Center
3002	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3003	PPLI	Precise Participant Location & Identification
3004	PPM	Project Planning and Management
3005	PPO	PolyPhenylene Oxide
3006	PPQN	Pulses Per Quarter Note (ditto)
3007	PPQT	Pre-Production Qualification Test
3008	PPV	Pay-per-view
3009	Pr	Pastor, Priest
3010	PR	Public Relations
3011	Prb	Presbyter
3012	PRBO	Point Reyes Bird Observatory
3013	PRC	People's Republic of China
3014	PRD	CERDEC Product Realization Directorate
3015	PRFG	Partial Fog (METAR Code)
3016	PRI	Puerto Rico (ISO 3166 trigram)
3017	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3018	PRM	Personnel iness Management
3019	PRY	Paraguay (ISO 3166 trigram)
3020	Ps	petasecond
3021	pS	picosiemens
3022	PSG	Pacific Seabird Group
3023	PSI	Portable Source Initiative
3024	PSI	Pounds per square inch
3025	PSS	Personnel System Support
3026	PST	Pacific Standard Time (UTC-8 hours)
3027	PSU	Pennsylvania State University
3028	PsyOp	Psychological Operations
3029	pT	picotesla
3030	Pt	Platinum
3031	PTA	Parent-Teacher Association
3032	PTAL	Public Transport Accessibility Level
3033	PTES	People's Trust for Endangered Species
3034	PTFE	PolyTetraFluoroEthylene
3035	PTI	Pardon the Interruption
3036	PTSD	Post-Traumatic Stress Disorder
3037	Pu	Plutonium
3038	Pub	Publication
3039	PUG	PET Users Group
3040	PUN	Pull-Up Network
3041	PUP	Pull-Up Point
3042	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3043	PV	petavolt
3044	pV	picovolt
3045	PvE	Player versus Environment
3046	PvP	Player versus Player
3047	PVR	Personal Video Recorder
3048	PvZ	Plants vs. Zombies
3049	PW	Palau (postal symbol; ISO 3166 digram)
3050	pW	picowatt
3051	PWA	Pirates With Attitude
3052	PWBA	Pension and Welfare Benefits Administration
3053	PWC	PieceWise Constant (describing a mathematical function)
3054	PwC	PricewaterhouseCoopers (international accounting firm)
3055	PWL	PieceWise Linear (describing a mathematical function)
3056	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3057	PWR	Pressurized Water Reactor
3058	PX	Post eXchange
3059	PYF	French Polynesia (ISO 3166 trigram)
3060	PYMWYMI	Put Your Money Where Your Mouth Is
3061	Q1	First Quarter
3062	Q2	Second Quarter
3063	Q3	Third Quarter
3064	Q4	Fourth Quarter
3065	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
3066	Qantas	Queensland And Northern Territory Aerial Services
3067	QAT	Qatar (ISO 3166 trigram)
3068	QB	Quarterback (football)
3069	QCD	Quantum ChromoDynamics
3070	QDR	Quadrennial Defense Review
3071	QEH	Queen Elizabeth's Hospital
3072	QK	Air Canada Jazz (IATA airline designator)
3073	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3074	QPS	Quark Publishing System
3075	QSCAT	Quick Scatterometer satellite
3076	QSL	Québec Sign Language
3077	QSO	Quasi-Stellar Object
3078	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3079	Quasar	Quasi-stellar radio source
3080	QUB	Queen's University Belfast
3081	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3082	QZ	Awair (IATA airline designator)
3083	R2I	Resistance to Interrogation
3084	RA	Radio Australia
3085	Ra	Radium
3086	RAAF	Royal Australian Air Force
3087	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3088	RACK	Risk Aware Consensual Kink (SM phrase)
3089	Racon	RAdar beaCON
3090	RADA	Royal Academy of Dramatic Art
3091	Radar	Radio Detection And Ranging
3092	RadB	Rad51/Dmc1 homologous protein
3093	RADb	Routing Assets Data Base
3094	RADC	Region Air Defence Commander
3095	RAE	UK Royal Aircraft Establishment (-1991)
3096	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3097	RAM	Royal Air Maroc
3098	Ramark	RAdar MARKer
3099	RAOC	Rear Area Operation Centre
3100	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3101	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3102	RATELO	Radiotelephone Operator
3103	Rb	Rubidium
3104	RB	Running Back (football)
3105	RBI	Runs Batted In
3106	RC	see entry
3107	RCAF	Royal Canadian Air Force
3108	RCC	Rescue Co-ordination Centre
3109	RCCO	Royal Canadian College of Organists
3110	RCHA	Royal Canadian Horse Artillery (regiment)
3111	RCMP	Royal Canadian Mounted Police
3112	RD	Radio Disney
3113	RDD	Radiological Dispersion Device
3114	RDM	Remotely Delivered/Deliverable Mine
3115	RDT	Remote Digital Terminal
3116	RDV	Remote Detection Vehicle
3117	Re	Rhenium
3118	RE	Royal Engineers
3119	REACT	Remote Electronically Activated Control Technology
3120	REAM	Retired Educators Association of Minnesota
3121	RECCE	Reconnaissance
3122	REEF	Reef Environmental Education Foundation
3123	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3124	REME	Royal Electrical and Mechanical Engineers
3125	RERC	Rehabilitation Engineering Research Center
3126	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3127	REU	Réunion (ISO 3166 trigram)
3128	Rf	Rutherfordium
3129	RFD	Request for Documentation
3130	RFE	Request for Evaluation
3131	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3132	RFF	Right of First Refusal (legal term)
3133	RFID	Radio Frequency IDentification
3134	RFL	Rugby Football League
3135	RFP	Request for Proposal
3136	RFQ	Request for Quotation
3137	RFT	Request for Tender
3138	RFU	Rugby Football Union
3139	RG	Republican Guard
3140	Rg	Roentgenium
3141	RGB	Red Green Blue (colour model)
3142	RGBI	Red Green Blue Intensity (ditto)
3143	Rh	Rhodium
3144	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3145	RHIC	Relativistic Heavy Ion Collider
3146	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3147	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3148	RHU	Replacement Holding Unit
3149	RI	Rhode Island (postal symbol)
3150	RIAA	Recording Industry Association of America
3151	RIBA	Royal Institute of British Architects
3152	RIFA	Red imported fire ant
3153	RILA	Retail Industry Leaders Association
3154	RIMVS	Retinal Imaging Machine Vision System
3155	RINO	Republican In Name Only[1]
3156	RISC	Reduced Instruction Set Computer
3157	RJD	Reduced Julian Day
3158	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3159	RKO	Radio-Keith-Orpheum Pictures
3160	RLP	Recognised [Operating/Operational] Land Picture
3161	RLS	Restless Leg Syndrome
3162	RLY	Rally Point
3163	RM	see separate disambiguation page
3164	RMC	Robert Menzies College
3165	RMDA	Records Management and Declassification Agency
3166	RMP	Recognised [Operating/Operational] Maritime Picture
3167	RN	Radio Netherlands
3168	Rn	Radon
3169	RNA	RiboNucleic Acid
3170	RNAD	Royal Naval Armaments Depot (UK)
3171	RNPS	Radio Network Planning System
3172	RNZ	Radio New Zealand
3173	RNZI	Radio New Zealand International
3174	ROA	Rate Of Ascent
3175	ROE	Rules Of Engagement
3176	ROFLOL	Rolling On the Floor Laughing Out Loud
3177	ROH	Ring of Honor
3178	ROK	Republic of Korea
3179	ROP	Render Output Pipeline
3180	ROPE	Research Opportunity and Performance Evidence
3181	ROS	Reactive Oxygen Species
3182	ROU	Romania (ISO 3166 trigram)
3183	ROV	Remotely Operated Vehicle
3184	ROZ	Restricted Operations Zone
3185	RPA	Regional Plan Association
3186	RPD	Recognition-Primed Decision-making
3187	RPF	Rwandan Patriotic Front
3188	RPL	Reverse Polish Lisp
3189	rpm	revolutions per minute
3190	RPN	reverse Polish notation
3191	rps	revolutions per second
3192	RPV	Remotely Piloted Vehicle
3193	RQ	Puerto Rico (FIPS 10-4 territory code)
3194	RRB	Railroad Retirement Board
3195	RRN	Recurrence Rate Number
3196	RRP	Recurrent Respiratory Papillomatosis
3197	RRS	Racing Rules of Sailing
3198	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3199	RS	Russia (FIPS 10-4 country code)
3200	RSI	Repetitive Strain Injury
3201	RSJ	Rolled Steel Joist (construction)
3202	RSN	Real Soon Now (coined by author Jerry Pournelle)
3203	RSPB	(UK) Royal Society for the Protection of Birds
3204	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3205	RSR	Required Supply Rate
3206	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3207	RSRI	Red Sands Research Institute
3208	RSS	Really Simple Syndication
3209	RTA	Road traffic accident (British)
3210	RTBF	Radio-Télévision belge de la Communauté française
3211	RTF	Rich Text Format
3212	RTFM	the Fucking/Fine Manual
3213	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3214	RTI	Run-Time Infrastructure (Simulation)
3215	RTL	see entry
3216	RTP	Real-time Transport Protocol
3217	RTS	see entry
3218	RTT	Round Trip Timing
3219	RU	Russia (ISO 3166 digram)
3220	Ru	Ruthenium
3221	RUC	Royal Ulster Constabulary
3222	RUS	Russia (ISO 3166 trigram)
3223	RUSI	Royal United Services Institute for Defence Studies
3224	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3225	RWA	Rwanda (ISO 3166 trigram)
3226	RWH	Rain Water Harvesting
3227	RWR	Radar Warning Receiver
3228	RWS	Remote Weapon Station
3229	RX	Receive
3230	SBNO	Standing but not operating (in reference to amusement parks)
3231	SCOTUS	Supreme Court of the United States
3232	SCROTUS	So-called Ruler of the United States
3233	SDHC	Secure Digital High Capacity
3234	SDXC	Secure Digital eXtended Capacity
3235	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3236	SGOTUS	Second Gentleman of the United States
3237	SHO	Showtime (see also sho.com)
3238	SIRI	Service Interface for Real Time Information
3239	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3240	SLOTUS	Second Lady of the United States (the vice president's wife)
3241	SoCon	Southern Conference (U.S. college sports)
3242	STB	Surface Transportation Board[2]
3243	SWAC	Southwestern Athletic Conference
3244	SWAN	System for Wearable Audio Navigation
3245	SWAT	Special Weapons And Tactics
3246	SWF	Single White Female
3247	Ta	Tantalum
3248	TAACOM	U.S. Theater Army Area Command
3249	TAADCOORD	Theatre Army Air Defence Co-ordinator
3250	TAAR	Trace Amine-Associated Receptor
3251	TAC	U.S. Tactical Air Command (1946-1992)
3252	TACAN	Tactical Air Navigation
3253	TACCO	Tactical Coordinator
3254	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3255	TACDAR	Tactical Detection And Reporting
3256	TACSOP	Tactical SOP (Standing Operating Procedure)
3257	TADIL	Tactical Digital Information Link
3258	TAI	Target[ed] Area of Interest
3259	TAJ	Tom and Jerry
3260	TAJT	Tom and Jerry Tales
3261	TALES	Technical Advice and Lexicon for Enabling Simulation
3262	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3263	TANP	Terrain-Aware Network Planner
3264	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)
3265	TAPPS	Texas Association of Private and Parochial Schools
3266	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3267	TAS	Tasmania (postal symbol)
3268	TASER	Thomas A. Swift's Electric Rifle
3269	TASM	Tactical Air-to-Surface Missile
3270	TAT	Tourism Authority of Thailand
3271	TATP	TriAcetone TriPeroxide
3272	TATT	Tired All The Time (medical diagnosis in-joke)
3273	Tb	Terbium
3274	TB	Tuberculosis
3275	TBA	to be announced
3276	TBBPA	TetraBromoBisPhenol-A
3277	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3278	TBF	to be fair
3279	TBH	To Be Honest
3280	TBL	Turkish Basketball League
3281	TBS	Turner Broadcasting System
3282	TBT	Tributyltin
3283	Tc	Technetium
3284	TCAA	Top Counter-Assault Agents
3285	TCAS	Traffic Collision Avoidance System
3286	TCCCS	Tactical Command,Control and Communication System
3287	TCD	Chad (ISO 3166 trigram)
3288	TCHD	Truck Cargo Heavy Duty
3289	TCL	Tool Command Language
3290	TCM	Turner Classic Movies
3291	TCU	Texas Christian University
3292	TCW	Tasty Coma Wife
3293	TCWMS	Tele-Center Workforce Management System
3294	TDA	The Disney Afternoon
3295	TDL	Tactical Data Link
3296	TDM	Time-Division Multiplexing
3297	TDMA	Time Division Multiple Access
3298	TDP	Technology Demonstration Programme
3299	TDRS	Tracking Data and Relay Satellite
3300	Te	Tellurium
3301	TEAL	Tasman Empire Airways Limited
3302	Team	Together everyone achieves more
3303	TEAMS	The East African Marine System (fiber optic cable)
3304	TED	Technology Entertainment Design prize
3305	TENCAP	Tactical Exploitation of National Capabilities
3306	TERS	Tactical Event Reporting System
3307	TES	Tactical Event System
3308	TEST	Thesaurus of Engineering and Scientific Terms
3309	TEU	Twenty-foot equivalent unit (cargo capacity)
3310	TeVeS	Tensor Vector Scalar theory
3311	TFMPP	Trifluorophenylmethylpiperazine
3312	TFR	Total Fertility Rate
3313	TFT	Thin-Film Transistor
3314	Tg	Teragram
3315	TG	Togo (ISO 3166 digram)
3316	TGO	Togo (ISO 3166 trigram)
3317	Th	Thorium
3318	THA	Thailand (ISO 3166 trigram)
3319	THAAD	Terminal High Altitude Area Defence
3320	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3321	THEL	Tactical High Energy Laser ACTD
3322	THG	Tetrahydrogestrinone
3323	TIA	Total Information Awareness initiative
3324	TIA	Transient Ischemic Attack
3325	TIALD	Thermal Imaging and Airborne Laser Designation
3326	TIBS	Tactical Information Broadcast System
3327	TIC	Troops In Contact
3328	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3329	TINC	There Is No Cabal
3330	TIP	Thermal Identification Panel
3331	tits	Toes in the Sand
3332	TJD	Truncated Julian Day
3333	TJK	Tajikistan (ISO 3166 trigram)
3334	TKL	Tokelau (ISO 3166 trigram)
3335	TKM	Turkmenistan (ISO 3166 trigram)
3336	Tl	Thallium
3337	TLA	Three-Letter Abbreviation/Acronym
3338	TLAM	Tomahawk Land Attack Missile
3339	TLATOJL	The Life and Times of Juniper Lee
3340	TLPM	T1 Line Performance Monitor
3341	Tm	Terametre
3342	TMAP	Texas Medication Algorithm Project
3343	TMC	The Movie Channel
3344	TMD	Theatre Missile Defence
3345	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3346	TMI	Too Much Information
3347	TMJ	TemporoMandibular Joint (syndrome)
3348	TMNT	Teenage Mutant Ninja Turtles
3349	TMPG	Transparent Multi-Platform Gateway
3350	TMR	Twin Main Rotors (helicopter type)
3351	TMS	Transcranial Magnetic Stimulation
3352	TMT	Thirty Meter Telescope
3353	TMTOWTDI	There's Than One Way To Do It (from Perl)
3354	TNA	Total Nonstop Action Wrestling
3355	TNO	Trans-Neptunian Object
3356	TOBS	Time of OBServation
3357	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3358	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3359	TOGS	Thermal Observation Gunnery Sight
3360	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3361	TON	Tonga (ISO 3166 trigram)
3362	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
3363	TOT	Time On Target
3364	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3365	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3366	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3367	TPI	The point is
3368	TPO	Thrombopoietin
3369	TPS	The Pennington School
3370	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3371	TQ	Top Qualifier (similar to Pole Position in car racing)
3372	TRA	Technology iness Assessment
3373	TRAC	(U.S. Army) TRADOC Analysis Center
3374	TRACON	Terminal Radar Approach Control
3375	TRADOC	(U.S. Army) Training and Doctrine Command
3376	TRANSCOM	U.S. Transportation Command
3377	TRAP	Tactical Receive equipment and related Applications
3378	TRASANA	TRADOC Systems Analysis Agency
3379	TRD	Towed Radar Decoy
3380	TRIGAT	Third Generation Antitank (missile)
3381	TRL	Technology readiness level
3382	Trp	Troop
3383	TRU	Transuranic
3384	TRUEX	Training in Urban Environment Exercise
3385	TRW	Thompson Ramo Wooldridge Inc.
3386	Ts	Terasecond
3387	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3388	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3389	TSEC	Transmission Security Encryption Code
3390	TSL	Transportation Security Laboratory
3391	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3392	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3393	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3394	TSR	Terminate and Stay Resident
3395	TSSIA	The Subject Says It All
3396	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3397	TTCT	Torrance Tests of Creative Thinking
3398	TTFN	Ta Ta For Now
3399	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3400	TTO	Trinidad and Tobago (ISO 3166 trigram)
3401	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3402	TTTEAF	Thomas the Tank Engine and Friends
3403	TTY	TeleTYpewriter (Printer)
3404	TTYL	To You Later (Internet slang)
3405	TTZ	Tetrazolium
3406	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3407	TUC	Trades Union Congress
3408	TUG	TeX Users Group
3409	TUI	Text-based user interface (cf. CLI),among other uses
3410	TUN	Tunisia (ISO 3166 trigram)
3411	TUNS	Technical University of Nova Scotia
3412	TUR	Turkey (ISO 3166 trigram)
3413	TUSK	Tank Urban Survival Kit
3414	TUV	Tuvalu (ISO 3166 trigram)
3415	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3416	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3417	TVA	Tennessee Valley Authority
3418	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3419	TVR	TreVor (Wilkinson) Racing
3420	TVS	Tornado vortex signature
3421	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3422	TWAIN	Technology Without An Interesting Name
3423	TWE	Trans World Entertainment
3424	TWI	The Welding Institute
3425	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
3426	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3427	TWP	Technical Working Paper
3428	TWS	Thermal Weapon Sight,Track While Scan
3429	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3430	TXV	Thermostatic Expansion Valve
3431	TYT	Take Your Time,Internet chat abbreviation
3432	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3433	TZA	Tanzania (ISO 3166 trigram)
3434	TZC	Tetrazolium chloride
3435	U	Uranium
3436	UA	Ukraine (ISO 3166 digram) Unit of Action
3437	UAAP	University Athletic Association of the Philippines
3438	UAB	University of Alabama at Birmingham
3439	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3440	UBC	United Baptist Church,University of British Columbia
3441	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3442	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3443	UCBSA	United Cricket Board of South Africa
3444	UCF	University of Central Florida
3445	UCLA	University of California at Los Angeles
3446	UCLES	University of Cambridge Local Examinations Syndicate
3447	UCR	University of California at Riverside
3448	UCR	University of Costa Rica
3449	UCS	Union of Concerned Scientists
3450	UCSB	University of California at Santa Barbara
3451	UCSD	University of California at San Diego
3452	UDAS	Uppsala-DLR Asteroid Survey
3453	UDDI	Universal Description,Discovery and Integration
3454	UDTS	Uppsala-DLR Trojan Survey
3455	UE	Unit of Employment
3456	UEFA	Union of European Football Associations
3457	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3458	UFC	Ultimate Fighting Championship
3459	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3460	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3461	UGA	Uganda (ISO 3166 trigram)
3462	UGV	Unmanned Ground Vehicle
3463	UHF	Ultra High Frequency
3464	UHMW	Ultra-High Molecular Weight
3465	UHRB	Ultra-High Resolution Building (simulation)
3466	UIC	University of Illinois at Chicago
3467	UID	User ID
3468	UIUC	University of Illinois at Urbana-Champaign
3469	UJTL	Universal Joint Task List
3470	UKIP	United Kingdom Independence Party
3471	UKR	Ukraine (ISO 3166 trigram)
3472	UL	Underwriters Laboratories
3473	ULF	Ultra Low Frequency
3474	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3475	UMCP	Unit Maintenance Collection Point
3476	UMES	University of Maryland Eastern Shore
3477	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3478	UMIST	University of Manchester Institute of Science and Technology
3479	UMTS	Universal Mobile Telecommunications System
3480	UN	United Nations
3481	UNABOM	University and airline bomber (FBI case name)
3482	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3483	UNAMSIL	United Nations Mission in Sierra Leone
3484	UNCF	United Negro College Fund
3485	UNCLOS	United Nations Convention on the Law of the Sea
3486	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3487	UNCTAD	United Nations Conference on Trade and Development
3488	UNDCP	United Nations Drug Control Programme
3489	UNDE	(i/a) Union of National Defence Employees (Canada)
3490	UNDP	United Nations Development Programme
3491	UNEP	United Nations Environment Programme
3492	UNFCCC	United Nations Framework Convention on Climate Change
3493	UNFICYP	United Nations Peacekeeping Force in Cyprus
3494	UNGEGN	United Nations Group of Experts on Geographical Names
3495	UNHCR	United Nations High Commission (er) for Refugees
3496	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3497	UNICRI	United Nations Interregional Crime and Justice Research Institute
3498	UNIDO	United Nations Industrial Development Organization
3499	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3500	UNMIK	United Nations Interim Administration Mission in Kosovo
3501	UNOSOM	United Nations Operations in Somalia
3502	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3503	UNRISD	United Nations Research Institute for Social Development
3504	UNSM	Union of Nova Scotian Municipalities
3505	UNTAC	United Nations Transitional Authority in Cambodia
3506	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3507	UNU	United Nations University
3508	UPdM	Università Popolare della Multimedialità
3509	UPI	United Press International
3510	UPN	United Paramount Network
3511	UPU	Universal Postal Union
3512	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3513	URD	User Requirements Document
3514	URY	Uruguay (ISO 3166 trigram)
3515	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3516	USAF	United States Air Force
3517	USAFSPC	U.S. Air Force Space Command
3518	USAID	United States Agency for International Development
3519	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3520	USAREUR	United States Army Europe
3521	USB	Universal Serial Bus
3522	USCG	United States Coast Guard
3523	USDA	United States Department of Agriculture
3524	USDI	United States Department of the Interior
3525	USDOE	United States Department of Energy
3526	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3527	USEC	United States Enrichment Corporation
3528	USFL	United States Football League
3529	USFWS	United States Fish and Wildlife Service
3530	USGS	United States Geological Survey
3531	USIA	United States Information Agency
3532	USJFCOM	United States Joint Forces Command
3533	USMC	United States Marine Corps
3534	USMNT	United States men's national (soccer) team
3535	USN	United States Navy
3536	USNB	United States Naval Base
3537	USNG	United States National Grid
3538	USNH	United States Naval Hospital
3539	USNI	United States Naval Institute
3540	USNO	U.S. Naval Observatory
3541	USNOFS	United States Naval Observatory Flagstaff Station
3542	USNP	United States Newspaper Program
3543	USNR	United States Navy Reserve
3544	USNS	United States Naval Ship
3545	USNZ	University Sport New Zealand
3546	USPS	United States Postal Service
3547	USPTO	United States Patent and Trademark Office
3548	USS	United States ship (sometimes meaningless; see Star Trek)
3549	USSPACECOM	United States Space Command
3550	USSR	Union of Soviet Socialist Republics
3551	UST	Underground Storage Tank
3552	USTRANSCOM	United States Transportation Command
3553	USWNT	United States women's national (soccer) team
3554	UT	Universal Time
3555	UTEP	University of Texas at El Paso (pronounced you-tep)
3556	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3557	UUA	Unitarian Universalist Association
3558	UUID	Universally Unique Identifier (see also GUID)
3559	UUV	Unmanned Underwater Vehicle
3560	UW	University of Washington
3561	UWO	University of Western Ontario
3562	UWT	Under Water Telephone
3563	UWTG	Under Water Tug
3564	UWW	United World Wrestling
3565	UXO	Unexploded Ordnance
3566	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3567	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3568	UZB	Uzbekistan (ISO 3166 trigram)
3569	VACIS	Vehicle And Container Inspection System
3570	VACIS	Victorian Ambulance Clinical Information System
3571	VANOS	Variable Nockenwelle System
3572	VAO	Vienna Art Orchestra
3573	VBA	Visual Basic for Applications
3574	vCJD	Variant Creutzfeldt-Jakob Disease
3575	VCNO	(U.S.) Vice Chief of Naval Operations
3576	VCofS	Vice Chief of Staff
3577	VCR	Video cassette recorder
3578	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3579	VDFS	VisualSVN Distributed File System (VDFS)
3580	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3581	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3582	VEN	Venezuela (ISO 3166 trigram)
3583	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3584	VfD	s for deletion (used in Wikipedia)
3585	VFM	Value For Money
3586	VFMO	Very Fast Moving Object (astronomy)
3587	VFT	Virtual Function Table
3588	VFW	Veterans of Foreign Wars
3589	VG	British Virgin Islands (ISO 3166 digram)
3590	VGB	British Virgin Islands (ISO 3166 trigram)
3591	VH1	Video Hits One
3592	VHF	Very High Frequency
3593	VIA	Versatile Interface Adapter
3594	VIDS	Visual Information Display System
3595	VII	7 (in Roman numerals)
3596	VIII	8 (in Roman numerals)
3597	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3598	VIP	Very Important Person
3599	VISCII	VIetnamese Standard Code for Information Interchange
3600	VIT	Vellore Institute of Technology
3601	VIVO	Video In Video Out
3602	VJ	Video Jockey
3603	VLAD	Vertical Line Array DIFAR
3604	VLBA	Very Long Baseline Array
3605	VLF	Very Low Frequency
3606	VLIW	Very Long Instruction Word
3607	VLPFC	VentroLateral PreFrontal Cortex
3608	VLPMC	VentroLateral PreMotor Cortex
3609	VLSI	Very-large-scale integration
3610	VM	Vietnam (FIPS 10-4 country code)
3611	VMF	Marine Fighting Squadron of the United States Marine Corps
3612	VMF	Variable Message Format
3613	VMN	VentroMedial Nucleus (neurophysiology)
3614	VN	Vietnam (ISO 3166 digram)
3615	VNIR	Visible and Near InfraRed
3616	VNM	Vietnam (ISO 3166 trigram)
3617	VNS	see entry
3618	VOA	Voice of America
3619	VOIP	Voice Over Internet Protocol
3620	VOLT	Visual OpenType Layout Tool
3621	VON	Victorian Order of Nurses
3622	VOR	Voice of Russia
3623	VOX	Voice Operated oscillator
3624	VPOTUS	Vice President of the United States
3625	VPN	Virtual Private Network
3626	VR	Virtual Reality
3627	VRSG	Virtual Reality Scene Generator
3628	VSHORAD	Very Short Range Air Defence
3629	VSO	Voluntary Services Overseas
3630	VSR	Very Special Relativity
3631	VTC	Video Tele-Conference
3632	VTEC	Variable valve Timing and Electronic lift Control
3633	VTOL	Vertical Take-Off & Landing
3634	VUB	Vrije Universiteit Brussel (Belgian university)
3635	VUT	Vanuatu (ISO 3166 trigram)
3636	VVAF	Vietnam Veterans of America Foundation
3637	VW	Volkswagen
3638	VZ	Verizon Communications (NYSE code)
3639	W3C	World Wide Web Consortium
3640	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3641	WAAF	Women's Auxiliary Air Force (World War II UK)
3642	WACC	Weighted Average Cost of Capital (accounting)
3643	WACS	What-A-Cartoon! Show
3644	WAD	Weapons Alert Designator
3645	WAGGGS	World Association of Girl Guides and Girl Scouts
3646	WAL	see entry
3647	WAN	Wide area network
3648	WAP	Wireless Application Protocol
3649	WAPIMA	What a pain in my ass
3650	WAR	With All Respect
3651	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3652	WAYP	White And Yellow Pages
3653	Wb	Weber
3654	WBC	World Boxing Council
3655	WBE	Work Breakdown Element
3656	WBO	World Boxing Organization
3657	WCBO	World Chess Boxing Organisation
3658	WCBP	World Center for Birds of Prey
3659	WCL	World Confederation of Labour
3660	WCW	World Championship Wrestling
3661	WDIN	Wildlife Disease Information Node
3662	WDWR	Walt Disney World Resort
3663	WEBS	Weapon Effectiveness Battle Simulation
3664	WEC	World Extreme Cagefighting
3665	WEEE	Waste Electrical and Electronic Equipment
3666	WEF	World Economic Forum
3667	WEM	West Edmonton Mall
3668	WEU	Western European Union
3669	WEZ	Weapon Engagement Zone
3670	WF	Wallis and Futuna Islands (ISO 3166 digram)
3671	WFC	Women's Forage Corps (World War II UK)
3672	WFD	Weapon of Focused Destruction
3673	WFF	Wallops Flight Facility
3674	WFI	Water for Injection
3675	WFH	Working from home
3676	WFP	World Food Program
3677	WFZ	Weapons Free Zone
3678	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3679	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3680	WHI	Women's Health Initiative
3681	WHIP	Walks plus hits per inning pitched
3682	WHO	World Health Organisation
3683	WHS	(U.S.) Washington Headquarters Services
3684	WIIFM	What's in it for me?
3685	WIP	Work In Progress
3686	WIPO	World Intellectual Property Organization
3687	WIPP	[Nuclear] Waste Isolation Pilot Plant
3688	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3689	WKYP	Will Keep You Posted
3690	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3691	WLB	Women's Land Brigade (World War II Canada)
3692	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3693	WLOG	Without Loss Of Generality (see WOLOG)
3694	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3695	WMANUS	West Midlands Area National Union of Students
3696	WMD	World Movement for Democracy
3697	WMI	Wildlife Management Institute
3698	WMO	World Meteorological Organization
3699	WNA	World Nuclear Association
3700	WNF	Will Not Fix
3701	WNIT	Women's National Invitation Tournament
3702	WNW	West North-West
3703	WO	Warrant Officer
3704	WOF	Width of Fabric
3705	WOFT	Waste Of Fucking Time
3706	WOFTAM	Waste Of Fucking Time And Money
3707	WOI	Wheels Of Italy
3708	WOM	Write Only Memory
3709	WOS	Wilson Ornithological Society
3710	WOT	Waste Of Time
3711	WP	White Phosphorus (ammunition)
3712	WPB	War Production Board during World War II
3713	WPE	World Pork Expo
3714	WPK	Wider Peacekeeping
3715	WR	Wide Receiver (football)
3716	WRAC	Women's Royal Army Corps (World War II UK)
3717	WRAIR	Walter Reed Army Institute of Research
3718	WRBWWRM	We Best What We Most
3719	WRC	World Rally Championship
3720	WRC	World Religions Conference
3721	WRNG	Warning
3722	WRS	Worldwide Reference System
3723	WRT	NHS Workforce Review Team
3724	WRT	The Linksys routers whose model name start with 'WRT'
3725	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3726	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3727	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3728	WRT	Wireless Ronin Technologies (digital signage)
3729	WRT	World Rally Team
3730	WRT	Writer Response Theory
3731	WSC	Weapon System Catalogue
3732	WSDL	Web Services Description Language
3733	WSJ	(The) Wall Street Journal
3734	WSROC	Western Sydney Regional Organisation of Councils
3735	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3736	WSTC	Women Signallers Territorial Corps (World War II UK)
3737	WSW	West South-West
3738	WTC	World Trade Center
3739	WTF	What the fuck?; also What a Terrible Failure (android)
3740	WTFH	What The Fucking Hell
3741	WTH	What the Hell
3742	WTO	World Trade Organization
3743	WUBU2	What you been up to
3744	WV	West Virginia (postal symbol)
3745	WVA	World Veterinary Association
3746	WVIAC	West Virginia Intercollegiate Athletic Conference
3747	WVR	Women's Volunteer Reserve (World War II UK)
3748	WVSC	Women's Volunteer Service Corps (World War II Canada)
3749	WVU	West Virginia University
3750	WW	see entry
3751	WWE	World Wrestling Entertainment
3752	WWI	World War I
3753	WWII	World War II
3754	WWIII	World War III
3755	WWJD	What would Jesus do?
3756	WWS	Wheaton Warrenville South High School
3757	WWWF	World Wide Wrestling Federation
3758	WXO	Weather [Executive] Officer
3759	WY	Wyoming (postal symbol)
3760	WZ	Swaziland (FIPS 10-4 country code)
3761	XBML	eXtended Business Modelling Language
3762	XC	Ninety (in Roman numerals)
3763	XCBL	XML Common Business Library
3764	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3765	Xe	Xenon
3766	XFA	XML Forms Architecture
3767	XFC	Xtreme Fighting Championships
3768	XFD	Fighter aircraft made by Douglas
3769	Xfe	X File Explorer
3770	XFF	X-Forwarded-For
3771	XFG	Exfoliation glaucoma
3772	XFR	Automobile made by Jaguar
3773	XFT	X FreeType interface library
3774	XG	Automobile made by Hyundai
3775	XGA	Extended Graphics Array
3776	XGP	Extreme Game Player
3777	XHTML	eXtensible Hypertext Markup Language
3778	XI	Eleven (in Roman numerals)
3779	XII	Twelve (in Roman numerals)
3780	XIII	Thirteen (in Roman numerals)
3781	XIV	Fourteen (in Roman numerals)
3782	XIX	Nineteen (in Roman numerals)
3783	XJS	Automobile made by Jaguar
3784	XKB	X keyboard extension
3785	XKE	Automobile made by Jaguar
3786	XKR	Automobile made by Jaguar
3787	XML	eXtensible Markup Language
3788	XMSF	eXtensible Modelling and Simulation Framework
3789	XNA	X-No-Archive,Xeno Nucleic Acid
3790	XNC	X Northern Captain
3791	XNU	X is Not Unix
3792	XP	eXperience Point (role-playing games)
3793	XQJ	XQuery API for Java™
3794	XRAY	X-Ray
3795	XRML	eXtensible Rights Markup Language
3796	XS	Xiaolin Showdown
3797	XSL	eXtensible Style Language
3798	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3799	XUL	XML User Interface Language
3800	XV	Fifteen (in Roman numerals)
3801	XVI	Sixteen (in Roman numerals)
3802	XVII	Seventeen (in Roman numerals)
3803	XVIII	Eighteen (in Roman numerals)
3804	XWF	Xcitement Wrestling Federation
3805	XX	Twenty (in Roman numerals)
3806	Xyl	Xylobium
3807	XZN	Triple square screw driver
3808	y	Yocto-
3809	Y2K	Year Two Thousand
3810	yA	Yoctoampere
3811	Ya	Yottayear
3812	YaBPr	Yet another Brother Pat rant
3813	YABSLAG	Yet another boy singing like a girl
3814	YAC	Youth-Adult Committee
3815	YAFLA	Yet Another Five Letter Abbreviation
3816	YAP	Young Aspiring Professional
3817	YB	Youcef Benzouada (Southern Algerian name)
3818	Yb	Ytterbium
3819	yC	Yoctocoulomb
3820	YC	Yottacoulomb
3821	YDS	Yosemite Decimal System (climbing)
3822	YE	Yemen (ISO 3166 digram)
3823	YEM	Yemen (ISO 3166 trigram)
3824	yF	Yoctofarad
3825	YF	Yottafarad
3826	yg	Yoctogram
3827	Yg	Yottagram
3828	YGCO	Yamaneko Group of Comet Observers
3829	Ygo	Yu-Gi-Oh!
3830	yH	Yoctohenry
3831	YH	Yottahenry
3832	YHBT	You Have Been Trolled
3833	YHII	You Have It Inside
3834	YHS	Ya Hoor sur!
3835	Yi	Yobi
3836	Yippie	Youth International Party + suffix
3837	yJ	Yoctojoule
3838	YJ	Yottajoule
3839	yK	Yoctokelvin
3840	YK	Yottakelvin
3841	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3842	yL	Yoctolitre
3843	YL	Yottalitre
3844	ym	Yoctometre
3845	Ym	Yottametre
3846	YMMD	You Make My Day
3847	yN	Yoctonewton
3848	YN	Yottanewton
3849	YOLO	You Only Live Once
3850	YPA	Yards per Pass Attempt (football statistic)
3851	YPIO	Your Problem Is Obvious
3852	YPO	Young Presidents' Organization
3853	ys	Yoctosecond
3854	yS	Yoctosiemens
3855	Ys	Yottasecond
3856	YS	Yottasiemens
3857	YSI	Young Scots for Independence
3858	yT	Yoctotesla
3859	YTD	Year-To-Date
3860	YTM	Yield to Maturity
3861	YTS	Youth Training Scheme
3862	YTT	Yoshi Topsy-Turvy
3863	Yuppie	Young Urban Professional + suffix
3864	yV	Yoctovolt
3865	YV	Yottavolt
3866	yW	Yoctowatt
3867	YW	Yottawatt
3868	YYH	YuYu Hakusho
3869	z	Zepto
3870	Z	Zetta
3871	zA	Zeptoampere
3872	ZAF	South Africa (ISO 3166 trigram)
3873	ZAMS	Zero age main sequence
3874	ZAS	Zylinder Abschaltung System
3875	ZBT	Zero-Balance Transfer (accounting)
3876	zC	Zeptocoulomb
3877	ZC	Zettacoulomb
3878	ZCM	(n) ZENworks Configuration Management
3879	ZCMK	Zone Control Master Key
3880	ZCU	Zimbabwe Cricket Union
3881	\a	Atto-