PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
2	0D	obvious deed
3	1AM	Air Mechanic 1st Class
4	1D	One-Dimensional
5	2AM	Air Mechanic 2nd Class
6	2D	Two-dimensional
7	2LA	Two Letter Acronym
8	2Lt	2nd Lieutenant
9	3AM	Air Mechanic 3rd Class
10	3D	Three-Dimensional
11	3G	Third-generation mobile telephone system
12	3i	Investors In Industry (venture capitalists)
13	3M	Minnesota Mining and Manufacturing Company
14	4G	Fourth-generation mobile telephone system
15	4WD	Four-wheel drive
16	5D	Five-Dimensional
17	6D	Six-Dimensional
18	7D	Seven-Dimensional
19	8D	Eight-Dimensional
20	9D	Nine-Dimensional
21	A	Ampere
22	A10	Atlantic 10 Conference
23	A1C	Airman First Class
24	A4	European standard office paper size
25	aA	Attoampere
26	AAA	administration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
27	AAAS	American Association for the Advancement of Science
28	AAAV	Advanced Amphibious Assault Vehicle
29	AADAC	Alberta Alcohol and Drug Abuse Commission
30	AADD	Adult attention deficit disorder
31	AADT	annual average daily traffic
32	AAFES	Army and Air Force Exchange Service
33	AAIS	advanced airborne interceptor simulator
34	AAM	air-to-air missile
35	AAMOF	as a matter of fact
36	AAN	American Academy of Nursing
37	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
38	AAODL	Atmospheric Aerosols and Optics Data Library
39	AAPC	Accounting and Auditing Policy Committee
40	AARP	American Association of Retired Persons (now officially known only by the initials)
41	AASPEM	advanced air-to-air system performance evaluation model
42	AAT	Australian Antarctic Territory
43	AAV	Amphibious Assault Vehicle
44	AAWC	anti-air warfare commander
45	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
46	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
47	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48	ABC	the first three letters of the Latin script known as the alphabet
49	ABC	abstinence, be faithful, condoms
50	ABC	Active Body Control
51	ABC	airway, breathing, circulation
52	ABC	Alcoholic Beverage Commission
53	ABC	alien big cat
54	ABC	always be careful
55	ABC	American-born Chinese
56	ABC	anti-lock brake controller
57	ABC	atomic, biological, chemical
58	ABCS	(U.S.) Army Battle Command System
59	ABET	Accreditation Board for Engineering and Technology
60	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
61	ABGI	Addington-Barker Group International
62	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
63	ABL	American Basketball League
64	ABLE	AirBorne Law Enforcement (police air support unit)
65	ABMC	American Battle Monuments Commission
66	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67	ABPI	Association of the British Pharmaceutical Industry
68	ABRSM	Associated Board of the Royal Schools of Music
69	ABS	acrylonitrile butadiene styrene, or: anti-lock braking system
70	ABSA	Amalgamated Banks of South Africa
71	ABSTRIPS	abstraction-based STRIPS
72	ABV	Alcohol by volume
73	ABW	Aruba (ISO 3166 trigram)
74	Ac	Actinium
75	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Antigua and Barbuda (FIPS 10-4 country code),Associazione Calcio (Italian,'football (soccer) club'),A/C,Air Conditioned/Conditioning,Aircraft
76	aC	Attocoulomb
77	AC1	Aircraftman 1st Class
78	AC2	Aircraftman 2nd Class
79	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80	ACARS	Aircraft Communications Addressing and Reporting System
81	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83	ACCD	American Coalition of Citizens with Disabilities
84	ACCS	Air Communications and Control Squadron
85	ACDA	Arms Control & Disarmament Agency
86	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
88	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
90	ACHT	Average Call Hold Time
91	ACINT	Acoustic Intelligence
92	ACK	Acknowledge (telecommunications; cf. NAK)
93	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94	ACLJ	American Center for Law and Justice
95	ACLOS	Automatic CLOS (missile control system)
96	ACLS	American Council of Learned Societies
97	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98	ACM	many,including Association for Computing Machinery; see entry
99	ACMC	(U.S.) Assistant Commandant of the Marine Corps
100	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101	ACNA	Anglican Church in North America
102	ACO	Airspace Control Order
103	ACOBA	Advisory Committee on Business Appointments
104	ACOG	American College of Obstetricians and Gynecologists
105	ACOM	(U.S.) Atlantic Command
106	ACORN	Association of Community Organizations for Reform Now
107	ACP	African,Caribbean and Pacific Group of States,Air Control Point
108	ACR	Advanced Concepts and Requirements
109	ACRI	African Crisis Initiative
110	ACRT	Advanced Concepts Research Tool simulator
111	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112	ACSC	Army Command and Staff College (various nations)
113	ACST	American Cooperative School of Tunis
114	ACST	Australian Central Standard Time
115	ACT	Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP,AIDS Coalition to Unleash Power
116	ACTD	Advanced Concept Technology Demonstration
117	ACTF	(U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R,ACT-Rational (cognitive model),ACT-R/PM,ACT-R/Perceptual-Motor (cognitive model)
118	ACTU	Australian Council of Trade Unions
119	ACU	American Conservative Union
120	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
121	AD	Air Defence,Andorra (ISO 3166 digram),Anno Domini (Latin,'In the year of our Lord')
122	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124	ADAGE	Air Defense Air to Ground Engagement (simulation)
125	ADAP	AIDS Drug Assistance Program
126	ADAS	Asiago-DLR Asteroid Survey
127	ADAT	Alesis Digital Audio Tape (recording format)
128	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129	ADB	Asian Development Bank
130	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132	ADDIE	Analyze Design Develop Implement and Evaluate
133	ADDNS	Advanced Deployable Day/Night Simulation
134	ADGB	Air Defence of Great Britain
135	ADHD	Attention-Deficit Hyperactivity Disorder
136	ADHS	Attention-Deficit Hyperactivity Syndrome
137	ADI	Acceptable/Allowable Daily Intake
138	ADIZ	Air Defence Identification Zone
139	ADL	Anti-Defamation League
140	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141	ADOA	Air Defence Operations Area
142	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
144	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
145	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
146	ADT	Atlantic Daylight Time (UTC−3 hours)
147	ADTB	Army Doctrine and Training Bulletin
148	ADW	Air Defence Warning
149	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
150	AEDT	Australian Eastern Daylight Time
151	AEF	American Expeditionary Force
152	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
153	AESR	Aeronautical Equipment Service Record
154	AEST	Australian Eastern Standard Time
155	aet	After extra time (Football)
156	AEW	Airborne Early Warning,Airborne Electronic Warfare
157	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
158	aF	Attofarad
159	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160	AFAIC	As Far As I'm Concerned
161	AFAICT	As Far As I Can Tell
162	AFAIK	As Far As I Know
163	AFAIR	As Far As I Remember/Recall
164	AFAM	Associazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
165	AFATDS	Advanced Field Artillery Tactical Data System
166	AFCEA	Armed Forces Communications and Electronics Association
167	AFDB	African Development Bank
168	AFES	Automatic Fire Extinguishing System
169	AFG	Afghanistan (ISO 3166 trigram)
170	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171	AFIST	Abrams Full Crew Interactive Skills Trainer
172	AFJ	April Fool's Joke
173	AFK	Away From Keyboard (Internet chat abbreviation)
174	AFLAC	American Family Life Assurance Company of Columbus
175	AFO	Association of Field Ornithologists
176	AFOSR	U.S. Air Force Office of Scientific Research
177	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
178	AFQT	Armed Forces Qualification Test
179	AFRC	Air Force Reserve Command
180	AFRL	Air Force Research Laboratory
181	AFROTC	Air Force Reserve Officer Training Corps
182	AFRTS	Armed Forces Radio and Television Service
183	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
184	AFSCN	U.S. Air Force Satellite Control Network
185	AFSPC	Air Force Space Command
186	AFT	American Farmland Trust
187	AFV	armoured fighting vehicle
188	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
189	ag	Attogram
190	Ag	Silver (Latin argentum)
191	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
192	AGARD	Advisory Group for Aerospace Research and Development
193	AGARDograph	Advanced Guidance for Alliance Research and Development publication
194	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
195	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
196	AGC	Adjutant General's Corps (British Army)
197	AGDC	Australian Game Developers' Conference
198	AGI	Auxiliary Group Intelligence
199	AGM	Annual General Meeting
200	AGN	Active Galactic Nucleus
201	AGO	Angola (ISO 3166 trigram)
202	AGP	Accelerated Graphics Port
203	AGRICOLA	Agriculture Online Access
204	AGS	Alaska Ground Station (LandSat)
205	AGTS	Advanced Gunnery Training System
206	AGU	American Geophysical Union
207	AGW	Autonomous Guided Weapon
208	Ah	Ampere-hour
209	AH	Attack Helicopter
210	aH	Attohenry
211	AHA	American Heart Association
212	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
213	AHEC	Australian Health Ethics Committee
214	AHPCRC	Army High Performance Computing Research Center
215	AHQ	Air Headquarters
216	AHRQ	Agency for Healthcare Research and Quality
217	AHS	American Housing Survey
218	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
219	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
220	AIAA	American Institute of Aeronautics and Astronautics
221	AIC	African Independent Church,Animal Identification Coordinator
222	AICD	Australian Institute of Company Directors
223	AICMFP	And I Claim My Five Pounds
224	AID	U.S. Agency for International Development
225	AIDS	Acquired Immune Deficiency Syndrome
226	AIM	Australian Institute of Management
227	AIMP	Aurora Incremental Modernization Project
228	AIPAC	American Israel Public Affairs Committee
229	AIR	Aircraft Inventory Record
230	AIRFA	American Indian Religious Freedom Act
231	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
232	AIS	Australian Institute of Sport,Automatic Identification System
233	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
234	aJ	Attojoule
235	AJ	Azerbaijan (FIPS 10-4 country code)
236	Ajax	Asynchronous JavaScript And XML
237	AJD	Astronomical Julian day
238	AJP	Allied Joint Publication
239	AJPW	All Japan Pro Wrestling
240	AK	Alaska (postal symbol)
241	aK	Attokelvin
242	AKA	Above knee amputation (orthopaedic usage)
243	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
244	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
245	AKST	Alaska Standard Time (UTC−9 hours)
246	AL	Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram),Anno Lucis (Latin,'Year of Light',in Masonic tradition,most often seen on plaques bearing the founding dates of buildings,in years AD and years AL)
247	Al	Aluminium
248	aL	Attolitre
249	ALA	Åland Islands (ISO 3166 trigram)
250	ALAP	As Long/Late As Possible
251	ALARM	Air-Launched Anti-Radar Missile
252	ALB	Albania (ISO 3166 trigram)
253	ALD	Accounting Line Designator (nuclear weapon targeting)
254	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
255	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
256	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
257	ALGOL	ALGOrithmic Language
258	ALPA	Air Line Pilots Association
259	ALS	Amyotrophic Lateral Sclerosis
260	ALSHS	Abraham Low Self-Help Systems
261	ALSP	Aggregate Level Simulation Protocol
262	ALTE	Association of Language Testers in Europe
263	Am	Americium
264	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
265	AM1	Airman 1st class
266	AMCB	U.S. Army/Marine Corps Board
267	AMFOM	Advanced Missile Fly Out Model
268	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
269	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
270	AML	Acute Myeloid Leukaemia
271	AMLCD	Active Matrix Liquid Crystal Display
272	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
273	AMO	Atlantic Multidecadal Oscillation
274	AMOLED	Active-matrix organic light-emitting diode
275	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
276	AMP	Adenosine MonoPhosphate,Automated Mission Planner
277	AMRAAM	Advanced Medium-Range Air-to-Air Missile
278	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
279	AMS	Agriculture Marketing Service,American Mathematical Society
280	AMSAA	U.S. Army Materiel Systems Analysis Activity
281	AMSO	U.S. Army Model and Simulation Office
282	AMSU	Advanced Microwave Sounding Unit
283	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
284	AN	Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
285	aN	Attonewton
286	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
287	ANC	African National Congress
288	AND	Andorra (ISO 3166 trigram)
289	ANFO	Ammonium nitrate/fuel oil (explosive)
290	ANGLiCo	Air/Naval Gunfire Liaison Company
291	ANL	Argonne National Laboratory
292	ANM	Acoustic Noise Monitor
293	ANOVA	ANalysis Of VAriance
294	ANS	Applied and Natural Sciences
295	ANSI	American National Standards Institute
296	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
297	ANTM	America's Next Top Model
298	ANTY	Acronyms,No Thank You
299	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
300	ANZ	Australia and New Zealand Banking Group
301	ANZAC	Australian and New Zealand Army Corps
302	AO	Angola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
303	AOC	Air Operations Centre,Air Officer Commanding
304	AOD	Adrenalin O.D. (punk rock band)
305	AOI	Angle Of Incidence (Arab Organization for Industrialization)
306	AOL	America OnLine
307	AOR	Area of Responsibility
308	AOSTH	Adventures of Sonic the Hedgehog
309	AOTS	Attack of the Show!
310	AOU	American Ornithologists' Union
311	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
312	APB	All Points Bulletin (police jargon)
313	APEC	Asia Pacific Economic Cooperation
314	APEDS	AMSAA Performance Estimates Data System
315	APEX	Applied Physics Express
316	APHA	American Public Health Association
317	APHIS	Animal and Plant Health Inspection Service
318	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
319	APOD	Aerial Port (Airport) Of Debarkation
320	APOE	Aerial Port (Airport) Of Embarkation
321	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
322	APP	Allied Procedural Publication
323	APR	Annual Percentage Rate
324	AQIM	Al-Qaeda in the Islamic Maghreb
325	Ar	Argon
326	ARAG	Advanced Research and Assessment Group
327	ARB	Administrative Review Board
328	ARBA	Army Review Boards Agency
329	ARCA	Automobile Racing Club of America
330	ARCENT	United States Army Central Command
331	ARDA	Advanced Research and Development Activity (became DTO 2006)
332	ARF	ASEAN Regional Forum
333	ARG	Argentina (ISO 3166 trigram)
334	ARH	Armed Reconnaissance Helicopter
335	ARNet	Acquisition Reform Network
336	ARP	Applied Research Programme
337	ARPA	Advanced Research Projects Agency
338	ARRC	ACE Rapid Reaction Corps
339	ARRF	Allied Rapid Reaction Force
340	ARRL	American Radio Relay League
341	ARSC	Arctic Region Supercomputing Center
342	ARSPACE	U.S. Army Space Command
343	ARTCC	Air Route Traffic Control Center
344	ARWG	Army Research Working Group
345	AS	ActionScript
346	AS	American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
347	As	Arsenic
348	aS	Attosiemens
349	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
350	ASAP	As Soon As Possible
351	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
352	asbl	association sans but lucratif (French 'Non-profit organisation')
353	ASBO	Anti-Social Behaviour Order
354	ASCAP	American Society of Composers,Authors,and Publishers
355	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
356	ASCII	American Standard Code for Information Interchange
357	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
358	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
359	ASEAN	Association of Southeast Asian Nations
360	ASFAR	Americans for a Society Free of Age Restrictions
361	ASG	Area Support Group
362	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
363	ASICS	Anima sana in corpore sano (Latin,'A sound mind in a sound body') (athletic shoe manufacturer)
364	ASIO	Australian Security Intelligence Organisation,Audio stream input output
365	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
366	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
367	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
368	ASMB	American Society for Matrix Biology,Adult Swim Message Board
369	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
370	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
371	ASN	Associate of Science in Nursing
372	ASOC	Air Sovereignty Operations Centre,Air Support Operations Centre,Airport Security and Operations Centre,Antarctic and Southern Ocean Coalition,Atlanta Symphony Orchestra Chorus,Australian Standard Offence Classification
373	ASP	Active Server Pages,American Society of Primatologists,Ammunition Supply Point,Application Service Provider (cf internet service provider),Astronomical Society of the Pacific,Association of Surfing Professionals
374	ASPI	Australian Strategic Policy Institute
375	ASR	Alkali-silica reaction,Anti Slip Regulation
376	ASRAAM	Advanced Short-Range Air-to-Air Missile
377	ASSC	Association for the Scientific Study of Consciousness
378	AST	Atlantic Standard Time (UTC−4 hours)
379	ASTIA	Armed Services Technical Information Agency
380	ASTM	American Society for Testing and Materials
381	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
382	ASUW	AntiSUrface Warfare
383	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
384	ASVEL	Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for 'Sporting Association'; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
385	ASW	AntiSubmarine Warfare
386	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
387	ASX	Advanced Stream Redirector,Australian Securities Exchange
388	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
389	At	Astatine
390	aT	Attotesla
391	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
392	ATAC	Air Transportable Acoustic Communications
393	ATACMS	Army TACtical Missile System
394	ATAPI	Advanced Technology Attachment Packet Interface
395	ATAS	Air-To-Air Stinger (missile)
396	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
397	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
398	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
399	ATCCIS	Army Tactical Command and Control Information System
400	ATESS	Aerospace and Telecommunications Engineering Support Squadron
401	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
402	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
403	ATGM	Anti-Tank Guided Missile
404	ATGW	Anti-Tank Guided Weapon
405	ATK	Attack
406	ATL	Atlanta,Georgia,the largest city and capital of Georgia
407	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
408	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
409	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
410	ATO	Air Tasking Order,Australian Taxation Office
411	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
412	ATSD	(U.S.) Assistant Secretary of Defense
413	ATSDR	Agency for Toxic Substances and Disease Registry
414	ATV	All-Terrain Vehicle
415	ATWA	Air,Trees,Water,Animals
416	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
417	Au	Gold (Latin Aurum)
418	AUC	Ab Urbe Condita / Anno Urbis Conditae (Latin 'from the founding of the city' / 'in the year since the founding of the city') (of Rome),Area Under the Curve (concentration time curve; medicine)
419	AUS	Australia (ISO 3166 trigram)
420	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
421	Auslan	Australian Sign Language
422	AUT	Austria (ISO 3166 trigram)
423	AUTL	Army Universal Task List
424	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
425	Av	Aperture value (photographic mode)
426	aV	Attovolt
427	AVA	American Viticultural Area
428	AVB	Audio Video Bridging
429	AVDLR	Aviation Depot Level Repair
430	AVGP	Armoured Vehicle, General Purpose
431	AVIM	Aviation Intermediate Maintenance
432	AVLB	Armoured Vehicle Launched Body
433	AVM	Air Vice-Marshal, Arteriovenous malformation
434	AVO	Apprehended Violence Order
435	AVP	Arubaanse Volkspartij
436	AVP	Association of Volleyball Professionals
437	AVRE	Armoured Vehicle Royal Engineers
438	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
439	AVUM	Aviation Unit Maintenance
440	AVVO	Acute Vaginal Venereal Outbreak
441	AW	Aruba (ISO 3166 digram)
442	aW	Attowatt
443	AWA	American Wrestling Association
444	AWC	Air Warfare Centre
445	AWD	All Wheel Drive
446	AWE	Advanced Warfighting Experiment
447	AWP	Awaiting Parts (SM&R code)
448	AWSIM	Air Warfare SIMulation
449	AWST	Australian Western Standard Time
450	AWW	Above Water Warfare
451	AX	Åland Islands (ISO 3166 digram)
452	AXP	Ambulance eXchange Point
453	AY	Antarctica (FIPS 10-4 territory code)
454	AYBABTU	All Your Base Are Belong To Us
455	AYU	As Yet Unknown
456	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
457	AZE	Azerbaijan (ISO 3166 trigram)
458	AZUR	Actions en zone urbaine (French for: Urban Operations)
459	BAR	Barbados (IOC trigram,but not FIFA or ISO 3166),British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD , Binational Agricultural Research and Development fund (between the US and Israel),BARDA , Biomedical Advanced Research and Development Agency,BART , Bay Area Rapid Transit,BAS , Battalion Aid Station,BASE , Building,Antenna,Span,Earth (parachute from),BASF , Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory,a German chemicals company),BASIC , Beginner's All-purpose Symbolic Instruction Code (acronym was added later,originally it was simply Basic),BAT , Basic Aid Training,BATF , U.S. Bureau of Alcohol,Tobacco,and Firearms,BATS , Behavior Analysis Training System ,Bradley Advanced Training System,BATTeRS , Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit]
460	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
461	BBB	Better Business Bureau,Blood-brain barrier
462	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
463	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
464	BBN	Bolt,Beranek and Newman
465	BBQ	Barbecue
466	BBS	Breeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC , U.K. Biotechnology and Biological Sciences Research Council,BBVA , Banco Bilbao Vizcaya Argentaria (Spanish bank)
467	BBYO	B'nai B'rith Youth Organization
468	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
469	BCA	Bachelor of Computer Application,Black Coaches & Administrators
470	BCC	Blind Carbon Copy
471	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
472	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
473	BEL	Belgium (ISO 3166 trigram)
474	BEN	Benin (ISO 3166 trigram)
475	BEO	Banquet Event Order
476	BERC	Business Environmental Resource Center
477	BER	Bit Error Rate
478	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
479	BHR	Bahrain (ISO 3166 trigram)
480	BNF	Backus-Naur Form (computing), British National Formulary
481	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
482	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
483	BNS	Bank of Nova Scotia
484	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
485	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
486	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
487	BoAML	Bank of America Merrill Lynch
488	BOC	British Orthodontic Society, British Oxygen Company
489	BÖC	Blue Öyster Cult
490	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
491	BOFH	Bastard Operator From Hell
492	BOGA	Bend Over and Grab Ankles
493	BOGOF	Buy One,Get One Free
494	BOGs	Bunch of Guys
495	BOI	Balance Of Investment,Basis Of Issue
496	BOL	Bolivia (ISO 3166 trigram)
497	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
498	BOPD	Barrel of Oil Per Day
499	BOS	Battlefield Operating System
500	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
501	BP	Battle Position,British Petroleum (today,BP does not officially stand for anything),Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
502	BPV	Battlefield Planning Visualization,Bovine papillomavirus
503	BQ	British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire,Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code)
504	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
505	BRA	Brazil (ISO 3166 trigram)
506	BRAG	Bicycle Ride Across Georgia
507	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
508	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
509	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
510	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
511	BSN	Baloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
512	BSNL	Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
513	BSoD	Blue Screen of Death (distinct from BSD)
514	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
515	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
516	BSW	British Standard Whitworth (screw thread)
517	BSX	Bendigo Stock Exchange
518	BT	Baal teshuva (Hebrew,'master of repentance') ,used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph,Bhutan (FIPS 10-4 country code; ISO 3166 digram),BitTorrent,British Telecom,the former name of the company now known as BT Group,BTDT , Been There,Done That,Bti , Bacillus thuringiensis israelensis,BTID , Battlefield Target Identification Device,BTIS , Battlefield Target Identification System
519	Bt	Baronet,Bacillus thuringiensis
520	BTO	Built To Order
521	BTP	British Transport Police
522	BTR	Bronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
523	BTU	British Thermal Unit
524	BTW	By The Way
525	BU	Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989)
526	BUAV	British Union for the Abolition of Vivisection
527	BUG-E	Battlefield Universal Gateway Equipment ('buggy')
528	BUNO	Bureau Number (aircraft serial number)
529	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
530	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
531	BVD	Bradley,Voorhees & Day (underwear manufacturer)
532	BVR	Beyond Visual Range
533	BVT	Bouvet Island (ISO 3166 trigram)
534	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
535	BW	Bring Wedges (ISO digram)
536	BW	Botswana (ISO 3166 digram)
537	BWA	Botswana (ISO 3166 trigram)
538	BWARS	Bees,Wasps & Ants Recording Society
539	BWC	Biological and Toxin Weapons Convention
540	BWR	Boiling-Water Reactor
541	BX	Base eXchange
542	BY	Burundi (FIPS 10-4 country code), Belarus (ISO 3166 digram), Bavaria
543	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
544	BYOC	Bring Your Own Computer (play on BYOB)
545	BYOF	Bring Your Own Flask
546	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
547	BYU	Brigham Young University
548	BZ	Belize (ISO 3166 digram)
549	BZP	Benzylpiperazine
550	C	Carbon, Coulomb, One Hundred (in Roman numerals)
551	c	Centi
552	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
553	c2c	the British rail company formerly known as LTS Rail
554	Ca	Calcium
555	CA	California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
556	CAA	Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association
557	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
558	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
559	CACM	Central American Common Market
560	CACM	Communications of the ACM
561	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
562	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
563	CADPAT	CAnadian Disruptive PATtern
564	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
565	CAEn	Close Action Engagement (constructive simulation)
566	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
567	CAFAD	Combined Arms For Air Defence
568	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
569	CAFE	Corporate Average Fuel Economy standard
570	CAI	Computer Assisted Instruction
571	CAIR	Council on American-Islamic Relations
572	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
573	CALL	Center for Army Lessons Learned
574	CALM	Communications,Air-interface,Long and Medium range
575	CalPERS	California Public Employees' Retirement System
576	Caltrans	California Department of Transpotation
577	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
578	CAMRA	CAMpaign for Real Ale
579	CAN	Canada (ISO 3166 trigram)
580	CANDU	CANada Deuterium Uranium (nuclear reactor design)
581	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
582	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
583	CARE	Citizens Association for Racial Equality (former New Zealand organisation),Community database on Accidents on the Roads in Europe,Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe)
584	CARMONETTE	Computerized Monte Carlo Simulation
585	CARP	Computed Air Release Point
586	CART	Championship Auto Racing Teams (now defunct)
587	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
588	CASA	Civil Aviation Safety Authority
589	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
590	CASS	Command Activated Sonobuoy System
591	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
592	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
593	CAT	Community Acceptance Testing
594	CATK	Counterattack
595	CATS	Computer Active Technology Suspension
596	CATT	Combined Arms Tactical Trainer
597	CAV	Cavalry
598	CAVOK	Ceiling And Visibility OK ('Kav-okay')
599	CAW	Canadian Auto Workers (trade union)
600	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
601	CBASSE	Commission on Behavioral And Social Sciences and Education ('sea bass')
602	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
603	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
604	CBF	Confederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
605	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
606	CBLA	Comparative bullet lead analysis
607	CBM	Canadian Baptist Ministries
608	CBM	Commodore Business Machines
609	CBML	Coalition Battle Management Language
610	CBN	CardsApp Brand Number
611	CBOL	Consortium for the Barcode of Life
612	CBOT	Chicago Board of Trade
613	CBR	Case-Based Reasoning
614	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
615	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
616	CBS	Columbia Broadcasting System,Corps Battle Simulation
617	CBUS	Columbus,Ohio
618	CC	carbon copy
619	CCA	Counter Command Activity
620	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
621	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
622	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
623	CCF	Cartoon Cartoon Fridays
624	CCG	Canadian Coast Guard,Collectible Card Game
625	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
626	CCGH	Canadian Coast Guard Hovercraft
627	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
628	CCH	Computer-Controlled Hostile
629	CCIF	Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee,merged with the CCIT in 1956 to form the CCITT)
630	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
631	CCIR	Comité consultatif international pour la radio (French for Consultative Committee on International Radio,became the ITU Radiocommunication Sector,ITU-R,in 1992),Commander's Critical Information Requirements
632	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
633	CCITT	Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee,became the ITU Telecommunication Standardization Sector,ITU-T,in 1992)
634	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
635	CCM	Canada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name,one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music
636	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
637	CCOP	Coalition Common Operating/Operational Picture
638	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
639	CCPA	Consumer Credit Protection Act
640	CCR	Creedence Clearwater Revival
641	CCRAp	Canadian Conservative Reform Alliance party
642	CCRP	Command and Control Research Program
643	CCRTS	Command and Control Research and Technology Symposium
644	CCSCS	Consultative Committee for Space Data Systems
645	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
646	CCSIL	Command and Control Simulation Interface Language ('cecil')
647	CCSK	Cyclic Code Shift Keying
648	CCT	Current Commitments Team
649	Cd	Cadmium
650	cd	Candela
651	CD	Compact Disc
652	CD1	Cluster of Differentiation 1 (a small gene family)
653	CDA	UK Centre for Defence Analysis
654	CDD	Capabilities Development Document
655	CDE	Chemical Defence Equipment
656	CDIAC	Carbon Dioxide Information Analysis Center ('see-dee-ack')
657	CDipAF	Certified Diploma in Accounting and Finance
658	CDL	Commercial driver's license
659	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
660	CDMA	Code Division Multiple Access
661	CDMSII	Cryogenic Dark Matter Search II
662	Cdr	Commander
663	CDT	Central Daylight Time (UTC−5 hours)
664	Cdt	Commandant
665	Ce	Cerium
666	CE	Christian/Common Era
667	CEA	Campaign Effectiveness Analysis
668	CECOM	U.S. Army Communications and Electronics Command
669	CEDEX	Courrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
670	CEGEP	Collège d'enseignement général et professionnel (French,'College of General and Vocational Education')
671	CEI	Competitive Enterprise Institute
672	CENTCOM	United States Central Command
673	CENTO	Central Treaty Organization (Baghdad Pact)
674	CENZUB	Centre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
675	CEO	Chief Executive Officer
676	CEP	Circular Error Probable
677	CEPT	Conférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
678	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
679	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
680	CERGA	Centre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
681	CERN	Centre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
682	CERT	Computer Emergency Response Team
683	CESS	Centre for Earth Science Studies (India)
684	CEST	Central European Summer Time
685	CET	Central European Time
686	CEWC	Council for Education in World Citizenship
687	Cf	Californium
688	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
689	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
690	CFAR	Christine's,Federal Acquisition Regulation
691	CFC	ChloroFluoroCarbon,Canadian Fish Company
692	CFES	Continuous Flow Electrophoresis System
693	CFFZ	Call For Fire Zone
694	CFG	Context-free grammar,Control flow graph
695	CFHT	Canada-France-Hawaii Telescope
696	CFI	Center for Inquiry (CSICOP)
697	CFL	Canadian Football League,Co-ordinated Fire Line
698	CFLCC	Coalition Forces Land Component Command
699	CFM	Certified Facilities Manager
700	CFO	Chief Financial Officer
701	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
702	CFR	Code of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
703	CFRP	Carbon fibre reinforced plastic
704	CFS	Chronic Fatigue Syndrome
705	CFSP	Common Foreign and Security Policy
706	CFU	Colony Forming Unit in Microbiology
707	CFV	Cavalry Fighting Vehicle
708	CFZ	Critical Friendly Zone
709	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
710	CGH	Comparative Genomic Hybridisation
711	CGIG	Cross-Government Implementation Group
712	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
713	CGS	Chief of the General Staff
714	CGT	Capital Gains Tax
715	ch	ch(L) is used to denote the Chern character of a line bundle
716	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
717	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
718	CHAOS	Cambridge Heart Anti-Oxidant Study
719	CHAPS	Clearing House Automated Payment System
720	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
721	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
722	CHI	Columbia Helicopters,Inc
723	CHiP	California Highway Patrol
724	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
725	CHL	Chile (ISO 3166 trigram)
726	CHLA	Core Historical Literature of Agriculture
727	CHN	China (ISO 3166 trigram)
728	CHOGM	Commonwealth Heads of Government Meeting
729	CHPSO	California Hospital Patient Safety Organization
730	CHRS	Canadian Heart Rhythm Society
731	CHT	Certified Hand Therapist
732	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
733	Ci	Curie
734	CIA	Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
735	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
736	CIB	Complete In Box (Internet auction/trading listings)
737	CIBC	Canadian Imperial Bank of Commerce
738	CICS	Customer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
739	CID	Certified Interior Designer
740	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
741	CIF	Cost,Insurance,and Freight (Paid) (shipping)
742	CIMMYT	Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
743	CINC	Commander in Chief
744	CINEOS	Campo Imperatore Near-Earth Object Survey
745	CIO	Chief information officer,Congress of Industrial Organizations
746	CIPE	(European) Centre for International Political Economy
747	CIR	(Commander's) Critical Information Requirements
748	CIR	Corotating Interaction Region
749	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
750	CISA	(U.S.) C4I Integration Support Activity
751	CISB	Complete In Sealed Box (Internet auction/trading listings)
752	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
753	CISSP	Certified Information Systems Security Professional
754	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
755	CIV	Côte d'Ivoire (ISO 3166 trigram)
756	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
757	CIVPOP	Civilian Population
758	CIWS	Close-In Weapon System
759	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
760	CJC	Canadian Jewish Congress,Cold Junction Compensation
761	CJCS	Chairman of the Joint Chiefs of Staff
762	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
763	CJO	Chief of Joint Operations
764	CJTF	Combined Joint Task Force
765	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
766	CKA	commonly known as, Canada Kicks Ass
767	CKND	Codename: Kids Next Door
768	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
769	Cl	Chlorine
770	CLA	Clutterers Anonymous
771	CLEC	Competitive Local Exchange Carrier
772	CLEMARS	California Law Enforcement Mutual Aid Radio System
773	CLIC	Compact LInear Collider
774	CLO	Cornell Lab of Ornithology
775	CLOS	Command to Line-Of-Sight (missile control system)
776	CLPFC	CentroLateral PreFrontal Cortex
777	CLRP	College Loan Repayment Program
778	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
779	Cm	Curium
780	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
781	CMHC	Canada Mortgage and Housing Corporation
782	CMIIAW	Correct me if I am wrong
783	CMIS	Common management information service
784	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
785	CMLL	Consejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
786	CMM	Capability Maturity Model
787	CMMC	Corps Materiel Management Centre
788	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
789	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
790	CMP	Common [Operating/Operational] Maritime Picture
791	CMPD	Charlotte Mecklenburg Police Department
792	CMPD	Chronic Myeloproliferative Disease
793	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
794	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
795	CMT	Country Music Television
796	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
797	CMW	Marconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales,Australia),Chicago,Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit)
798	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
799	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
800	CNA	Center for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company),National (Fire Insurance Company),and American (Casualty Company),the three companies that merged to form what is now known as CNA Financial
801	CNBC	Consumer News and Business Channel
802	CND	Campaign for Nuclear Disarmament,Computer Network Defence
803	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
804	CNF	Cost and Freight
805	CNI	Clinical Nursing Intern
806	CNI	Communications,Navigation and Identification
807	CNN	Cable News Network,Cellular Nonlinear Network
808	CNV	Copy-Number Variable (genetics)
809	Co	Cobalt
810	COB	Close Of Business [day]
811	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
812	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
813	CoDA	Co-Dependents Anonymous
814	COGENT	Cognitive Objects within a Graphical EnviroNmenT
815	COIL	Chemical Oxygen Iodine Laser
816	COK	Cook Islands (ISO 3166 trigram)
817	COL	Colombia (ISO 3166 trigram)
818	COLA	Cost Of Living Adjustment
819	CONAD	U.S. Continental Air Defense Command
820	CONMEBOL	Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
821	CONUS	Continental United States
822	COO	Chief Operating Officer
823	COPE	U.K. Committee On Publication Ethics
824	COPUS	U.K. Committee on the Public Understanding of Science
825	CORD	Common Operational Requirements Document
826	CORE	Consortium for Oceanographic Research and Education
827	COS	Cooper Ornithological Society
828	COSER	COoperative SERvice
829	CoT	Car of Tomorrow (former NASCAR race car design)
830	COTS	Commercial Off The Shelf
831	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
832	CPA	Certified Public Accountant
833	CPAC	Conservative Political Action Conference,Cable Public Affairs Channel ('see-pack')
834	CPCU	Certified Property Casualty Underwriter
835	CPD	Capabilities Production Document
836	CPE	Certificate of Proficiency in English
837	CPE	Certified Professional Ergonomist
838	CPF	Calibration Parameter File,Canadian Patrol Frigate
839	CPG	Clinical Practice Guideline
840	CPIM	Certification on Production and Inventory Management
841	CPIR	Computationally-Private Information Retrieval
842	CPON	Certified Pediatric Oncology Nurse
843	CPPCC	Chinese People's Political Consultative Conference
844	CPR	Canadian Pacific Railway
845	CPR	Cardiopulmonary resuscitation
846	CPSM	Continuous Phase Shift Modulation
847	CPSU	Communist Party of the Soviet Union
848	CPT	Contingency Planning Team
849	CPU	Contract Postal Unit
850	CPV	Cape Verde (ISO 3166 trigram)
851	CPX	Command Post eXercise
852	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
853	CQD	Close Quarters Drill (Morse distress code preceding SOS: CQ 'calling all stations',D 'Distress'; often incorrectly interpreted as 'Come Quick,Distress')
854	Cr	Chromium
855	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
856	CRAM	Combined Radiometric Correction Model
857	CRD	Capstone Requirements Document
858	CREB	Cyclic AMP-response Element Binding (protein)
859	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
860	CREN	Christian Real Estate Network Real Estate Association
861	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
862	CRIPL	Consolidated Remain-In-Place List
863	CRM	Cardiac Rhythm Management,Customer Relationship Management
864	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
865	CRP	Committee for the Re-Election of the President,Control and Reporting Post
866	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
867	CRTC	Canadian Radio-television and Telecommunications Commission
868	Cs	Caesium
869	CSA	Canadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area,Czech Airlines,C/S/A,CINC,Service,and Agency
870	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
871	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
872	CSG	Corps Support Group
873	CSI	see entry
874	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
875	CSIP	Commercial Stable Image Platform (AMD)
876	CSIS	Canadian Security Intelligence Service ('seessiss'),(U.S.) Center for Strategic & International Studies
877	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
878	CSL	U.K. Central Science Laboratory
879	CSPI	Center for Science in the Public Interest
880	CSR	Control Supply Rate
881	CSR	Corporate Social Responsibility
882	CSRC	Conflict Studies Research Centre
883	CSRF	Cross-Site Request Forgery
884	CST	Central Standard Time (UTC−6 hours)
885	CT	Computed tomography (medical scan also known as a CAT scan),Central Time zone,Chrono Trigger (Computer/Video games),Connecticut (postal symbol),Canterbury (postal symbol),Chhattisgarh (Indian state code)
886	CTA	Central African Republic (FIFA trigram,but not ISO 3166 or IOC),Chicago Transit Authority,Comando-Geral de Tecnologia Aerospacial (Portuguese,[Brazilian] 'General Command for Aerospace Technology')
887	CTBT	Comprehensive [Nuclear] Test Ban Treaty
888	CTDB	Compact Terrain Data Base (file format)
889	CTE	Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984),Chronic traumatic encephalopathy
890	CTGF	connective tissue growth factor
891	CTI	Co-operative Target Identification
892	CTIL	Critical Tracked Items List
893	CTIS	Central Tire Inflation System
894	CTMS	Clinical Trial Management System
895	CTO	Chief Technical Officer,Chief Technology Officer
896	CTS	Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
897	CTSS	Compatible Time-Sharing System
898	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
899	CTVT	Canine Transmissible Venereal Tumour
900	Cu	Copper (Latin Cuprum)
901	CUB	Cuba (ISO 3166 trigram)
902	CUCV	Commercial Utility Cargo Vehicle
903	CUNY	City University of New York ('CUE-knee')
904	CUPE	Canadian Union of Public Employees ('CUE-pee')
905	CUPS	Common Unix Printing System
906	CUPW	Canadian Union of Postal Workers
907	CUREA	Consortium for Undergraduate Research and Education in Astronomy
908	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
909	CUW	Curaçao (ISO 3166 trigram)
910	CV	curriculum vitae (résumé)
911	CVLL	Crypto Variable Logic Label
912	CVSD	Continuous Variable Slope Delta (modulation)
913	CVT	Continuously Variable Transmission
914	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
915	CWC	Chemical Weapons Convention
916	CWRU	Case Western Reserve University
917	CWS	Canadian Wildlife Service
918	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
919	CXR	Christmas Island (ISO 3166 trigram)
920	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
921	CYM	Cayman Islands (ISO 3166 trigram)
922	CZE	Czech Republic (ISO 3166 trigram)
923	CZF	(Christian Zombie Fan)
924	CZMA	(US) Coastal Zone Management Act
925	d	Deci
926	D	Deuterium
927	DAFIF	Digital Aeronautical Flight Information File
928	DAK	Disney's Animal Kingdom
929	DAO	Division Ammunition Officer
930	DARE	Drug Abuse Resistance Education
931	DARO	(U.S.) Defense Airborne Reconnaissance Office
932	DARPA	U.S. Defense Advanced Research Projects Agency
933	DAS	Defensive Aids Suite
934	DASD	(U.S.) Deputy Assistant Secretary of Defense
935	DASL	Datapoint's Advanced Systems Language
936	DAU	(U.S.) Defense Acquisition University
937	DAWN	(U.S.) Drug Abuse Warning Network
938	dB	Decibel
939	DB	Deutsche Bahn
940	Db	Dubnium
941	DBA	De Bellis Antiquitatis (miniature wargaming rules)
942	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
943	DBDO	Desert BDO
944	DBE	Dame Commander of the Order of the British Empire
945	DBF	Detection By Fire (weapon launch signature)
946	DBR	De Bellis Renationis (miniature wargaming rules)
947	DBRA	Davis-Bacon Related Acts
948	DBS	Direct Broadcast Services (television)
949	DCAA	(U.S.) Defense Contract Audit Agency
950	DCAS	Devon and Cornwall Archery Society
951	DCC	Dallas Christian College
952	DCD	[Organ] Donation after Cardiac Death
953	DCE	Data Communication Equipment
954	DCFC	Death Cab for Cutie
955	DCL	Disney Cruise Line
956	DCN	Deacon
957	DCOM	Disney Channel Original Movie
958	DCSOPS	Deputy Chief of Staff for Operations and plans
959	DCW	Digital Chart of the World
960	DCYSC	Discovery Channel Young Scientist Challenge
961	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
962	DDA	Deputy District Attorney
963	DDN	U.S. Defense Data Network
964	DDS	Doctor of Dental Surgery
965	DEA	Drug Enforcement Administration
966	DEA	Drug Enforcement Agency
967	DeCA	(U.S.) Defense Commissary Agency
968	DEFCON	Defence readiness condition
969	DELT	Dual Ended Line Test (ing)
970	DEPSECDEF	(U.S.) Deputy Secretary of Defense
971	DERA	British Defence Evaluation and Research Agency (1995-2001)
972	DES	Deep Ecliptic Survey
973	DEU	Germany (ISO 3166 trigram)
974	DFAS	(U.S.) Defense Finance and Accounting Service
975	DFCB	Data Format Control Book
976	DfID	UK Department for International Development
977	DFM	Discrete Field Model see Superluminal motion
978	DFM	Dynamic Flowgraph Methodology
979	DFSP	Dermatofibrosarcoma protuberans
980	DfT	UK Department for Transport
981	DGPS	Differential GPS
982	DGZ	Desired Ground Zero
983	DHA	DocosaHexaenoic Acid
984	DHHS	(U.S.) Department of Health and Human Services
985	DHRA	(U.S.) DoD Human Resources Activity
986	DHS	U.S. Department of Homeland Security
987	DHSS	UK Department of Health and Social Security
988	DHTFYSS	U.S. Don't Have Time For You Silly S****
989	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
990	DIA	U.S. Defense Intelligence Agency
991	DIAC	Department of Immigration and Citizenship (Australia) [1]
992	DiC	Design Island Centre (computing usually used in a teaching situation)
993	DICASS	DIrectional Command Activated Sonobuoy System
994	DIFAR	DIrectional Frequency Analysis and Recording
995	DIME	Dense Inert Metal Explosive
996	DIP	Dual In-line Package (electronics)
997	DIPS	Defense independent pitching statistics
998	DIR	Defence Industrial Research
999	DISCOM	Division Support Command
1000	DISE	Deployable Intelligence Support Element
1001	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
1002	DITY	Do-It-Yourself
1003	DIVAD	Division Air Defence
1004	DIY	Do It Yourself
1005	DJI	Djibouti (ISO 3166 trigram)
1006	DK	Denmark (ISO 3166 digram)
1007	DL	Dexter's Laboratory
1008	DLIC	Detachment Left-In-Contact
1009	DLIR	Depot-Level Inspection and Repair
1010	DLPMC	DorsoLateral PreMotor Cortex
1011	DLRP	Data Link Reference Point
1012	DLS	Deep Lens Survey
1013	DLSA	(U.S.) Defense Legal Services Agency
1014	DLSc	Diploma in Library Science
1015	DLTBGYD	Don't let the bastards grind you down
1016	DMC	(U.S.) Defense Management Council
1017	DMCA	Digital Millennium Copyright Act
1018	DMM	Digital Multimeter
1019	DMOC	Distributed Mission Operations Centre
1020	DMPA	(U.S.) Defense Medical Programs Activity
1021	DMPFC	DorsoMedial PreFrontal Cortex
1022	DMPK	Drug Metabolism and Pharmacokinetics
1023	DMRB	Design Manual for Roads and Bridges
1024	DMS	U.S. Defense Message System
1025	DMSP	U.S. Defense Meteorological Satellite Program
1026	DMT	Dimethyltryptamine
1027	DMV	Department of Motor Vehicles
1028	DMZ	DeMilitarized Zone
1029	DN	Deacon
1030	DNAW	Day Night All Weather
1031	DNDi	Drugs for Neglected Diseases initiative
1032	DNDO	U.S. Domestic Nuclear Detection Office
1033	DNK	Denmark (ISO 3166 trigram)
1034	DNM	Defence Nuclear Material
1035	DNR	Do Not Resuscitate
1036	DNS	Domain Name System
1037	DOB	Date Of Birth
1038	DOD	U.S. Department of Defense
1039	DODAF	U.S. Department of Defense Architectural Framework
1040	DoDD	U.S. Department of Defense Directive
1041	DoDEA	(U.S.) Department of Defense Education Activity
1042	DOE	U.S. Department of Energy
1043	DOHC	Dual-OverHead-Cam engine
1044	DOI	U.S. Department of the Interior
1045	DORA	Defence of the Realm Act
1046	DOS	Density of State
1047	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1048	DotD	Deal of the Day (marketing gimmick)
1049	DOW	Died of Wounds
1050	DP	Division de production (Algerian petroleum company)
1051	DPA	UK Defence Procurement Agency
1052	DPCO	Double-Pole Change Over
1053	DPDT	Double-Pole Double-Throw
1054	DPI	Dots Per Inch
1055	DPICM	Dual-Purpose Improved Conventional Munition
1056	DPKO	UN Department for Peacekeeping Operations
1057	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1058	DPPDB	Digital Point Positioning Database
1059	DPRK	Democratic People's Republic of Korea
1060	DPST	Double-Pole Single-Throw
1061	DRC	Democratic Republic of the Congo
1062	DRDC	Defence Research & Development Canada
1063	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1064	DRES	Defence Research Establishment Suffield (obsolete 2002)
1065	DRET	Defence Research Establishment Toronto (obsolete 2002)
1066	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1067	DRIC	(U.S.) Defense Research Information Center
1068	DRMS	(U.S.) Defense Revitalization and Marketing Service
1069	DRPR	Drawing Practices
1070	DRT	Document Related Technologies
1071	Ds	Darmstadtium
1072	DSAS	Disney Sing Along Songs
1073	DSB	(U.S.) Defense Science Board
1074	DSCS	U.S. Defense Satellite Communications System
1075	DSCSOC	DSCS Operations Center
1076	DSE	Dry Sheep Equivalent
1077	DSG	Direct-Shift Gearbox
1078	DSID	Dismounted Soldier Identification System
1079	DSL	Digital Subscriber Line
1080	DSLR	Digital single-lens reflex (camera)
1081	DSM	Diagnostic and Statistical Manual of Mental Disorders
1082	DSN	Deep Space Network
1083	DSPL	Design Specialists and Plans Language
1084	DSR	Deformed Special Relativity
1085	DST	Daylight Saving Time
1086	DSTL	British Defence Science and Technology Laboratory
1087	DSWA	(U.S.) Defense Special Weapons Agency
1088	DTA	Dental Technologists Association
1089	DTD	Digital Terrain Data
1090	DTG	Date-Time Group
1091	DTH	Direct To Home (television)
1092	DTI	UK Department of Trade and Industry
1093	DTIC	(U.S.) Defense Technical Information Center
1094	DTL	Diode-Transistor Logic (electronics)
1095	DTMF	Dual-tone multi-frequency signaling
1096	DTO	Disruptive Technology Office (was ARDA)
1097	DTR	Determine The Relationship
1098	DTSA	(U.S.) Defense Technology Security Administration
1099	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1100	DUSD	(U.S.) Deputy Under-Secretary of Defense
1101	DVLC	UK Driver and Vehicle Licencing Centre
1102	DVM	Doctor of Veterinary Medicine
1103	DVO	Direct View Optics
1104	DVOM	Digital Volt-Ohm Meter
1105	DVP	various meanings (disambiguation page)
1106	DW	Drum Workshop
1107	DWIM	Do What I Mean
1108	DWM	Doctor Who Magazine
1109	DWTS	Dancing with the Stars
1110	DWW	Down with Webster
1111	DXA	Dual-energy X-ray Absorptiometry
1112	DXM	DeXtroMethorphan
1113	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1114	Dy	Dysprosium
1115	DZA	Algeria (ISO 3166 trigram)
1116	E	East
1117	EABU	Explain Acronyms Before Use
1118	EAC	Echelons Above Corps
1119	EAPC	Euro-Atlantic Partnership Council
1120	EAST	Experimental Advanced Superconducting Tokamak
1121	EBD	Electronic Brake Distribution
1122	EBE	Extraterrestrial Biological Entity
1123	EBSA	Employee Benefits Security Administration
1124	EBW	Electron Beam Welding
1125	EBW	Exploding BridgeWire
1126	ECASS	European Centre for Analysis in the Social Sciences [1]
1127	ECBR	European Coalition for Biomedical Research
1128	ECCM	Electronic Counter-Counter-Measures
1129	ECFS	Electronic Case Filing System
1130	ECG	Electrocardiogram
1131	ECHR	European Convention on Human Rights
1132	ECJ	European Court of Justice
1133	ECL	Emitter Coupled Logic (electronics)
1134	ECommHR	European Commission on Human Rights
1135	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1136	ECT	ElectroConvulsive Therapy
1137	ECtHR	European Court of Human Rights
1138	EDA	European Defence Agency
1139	EDAC	Error Detection And Correction
1140	EDCS	Environmental Data Coding Specification
1141	EDH	Eastman Dental Hospital
1142	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1143	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1144	EEC	European Economic Community (predecessor of the EU)
1145	EEG	ElectroEncephaloGram
1146	EENT	End Evening Nautical Twilight
1147	EEO	Equal Employment Opportunity
1148	EEOC	(U.S.) Equal Employment Opportunity Commission
1149	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1150	EFF	Electronic Frontier Foundation
1151	EFL	English as a Foreign Language
1152	EFM	Enterprise Feedback Management
1153	EFOA	European Fuel Oxygenates Association
1154	EFSA	European Food Safety Authority
1155	EFT	Electronic Fund Transfer
1156	EFV	Expeditionary Fighting Vehicle
1157	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1158	EGCG	EpiGalloCatechin-3-Gallate
1159	EGIS	Erieye Ground Interface Segment
1160	EGRET	Energetic Gamma-Ray Experiment Telescope
1161	EGY	Egypt (ISO 3166 trigram)
1162	EHF	Extremely High Frequency
1163	EHR	Equipment History Record
1164	Ei	Exbi
1165	EI	Ireland (FIPS 10-4 country code; from Éire)
1166	EIA	Environmental Impact Assessment
1167	EIAH	Encyclopedia of Iranian Architectural History
1168	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1169	EIC	East India Company
1170	EICS	East India Company's Service
1171	eID	electronic ID
1172	EIRP	Effective Isotropic Radiated Power
1173	EIS	Environmental Impact Statement
1174	EJ	Exajoule
1175	EKG	Electrocardiogram (from German Elektrokardiogramm)
1176	EKMS	Electronic Key Management System
1177	EL	Exalitre
1178	ELINT	Electronic Intelligence
1179	ELL	English Language Learner
1180	ELM	Edge-Localised Mode (plasma physics)
1181	ELO	Electric Light Orchestra
1182	ELSS	Emergency Life Support Stores
1183	EM	ElectroMagnetism/ElectroMagnetic
1184	Em	Exametre
1185	EMA	European Medicines Agency
1186	EMCON	(Electromagnetic) Emissions Control
1187	EMDG	Euro-Missile Dynamics Group
1188	EMDR	Eye Movement Desensitisation and Reprocessing
1189	EMEA	Europe,Middle East and Africa
1190	EMG	ElectroMyoGraph
1191	EMP	ElectroMagnetic Pulse
1192	EMS	Emergency Medical Services
1193	EMT	Emergency Medical Technician
1194	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1195	ENE	East North-East
1196	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1197	ENTEC	Euro NATO Training Engineer Centre
1198	ENVL	Envelope
1199	ENY	Enemy
1200	EOD	Explosive Ordnance Disposal
1201	EOG	ElectroOculoGraphy
1202	EOM	End of Message
1203	EOSAT	Earth Observation Satellite
1204	EOSDIS	Earth Observation Satellite Data and Information System
1205	EP	European Parliament
1206	EP	Extended play
1207	EPCOT	Experimental Prototype Community Of Tomorrow
1208	EPGS	EOS Polar Ground Sites
1209	EPIRB	Emergency Position Indicating Radio Beacon
1210	EPL	English Premier League
1211	EPOS	Electronic Point Of Sale
1212	EPPA	Employee Polygraph Protection Act
1213	EPR	European Pressurised [Nuclear] Reactor
1214	EQ	Emotional Quotient
1215	Er	Erbium
1216	ERCIM	European Research Consortium for Informatics and Mathematics
1217	ERI	Eritrea (ISO 3166 trigram)
1218	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1219	EROS	Earth Resources Observation System
1220	ERP	Engineer Regulating Point
1221	ERR	Eesti Rahvusringhääling
1222	ERS	Earth Resources Survey
1223	ERTS	Earth Resources Technology Satellite (became Landsat)
1224	ERV	Endogenous RetroVirus
1225	ESD	ElectroStatic Discharge
1226	ESDP	European Security and Defence Policy
1227	ESE	East South-East
1228	ESH	Western Sahara (ISO 3166 trigram)
1229	ESL	English as a Second Language
1230	ESM	Electronic warfare Support Measures
1231	ESO	European Southern Observatory
1232	ESOL	English for Speakers of Other Languages
1233	ESPN	Entertainment and Sports Programming Network
1234	ESU	Emergency Services Unit
1235	ESV	Engineer Support Vehicle
1236	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1237	ETH	Ethiopia (ISO 3166 trigram)
1238	ETI	Extra-Terrestrial Intelligence
1239	ETLA	Extended TLA
1240	ETT	Embedded Training Team
1241	Eu	Europium
1242	EUCOM	(U.S.) European Command
1243	EUUSA	European Union and United States of America
1244	EV	Exavolt
1245	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1246	EWTN	Eternal Word Television Network
1247	Exatesla	Extra Terrestrial
1248	EXREP	Expeditious Repair (SM&R code)
1249	f	Femto
1250	fA	Femtoampere
1251	FA	Food Addicts in Recovery Anonymous
1252	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1253	FAAD	Forward Area Air Defence
1254	FAADEZ	Forward Area Air Defence Engagement Zone
1255	FAAFP	Fellow of the American Academy of Family Physicians
1256	FAAN	Fellow of the American Academy of Neurology
1257	FAAN	Fellow of the American Academy of Nursing
1258	FAAQ	Frequently Asked and Anticipated Questions
1259	FAASV	Field Artillery Ammunition Supply Vehicle
1260	FAB	Feline Advisory Bureau (UK feline charity)
1261	FACA	(US) Federal Advisory Committee Act
1262	FACH	Fuerza Aérea de Chile
1263	FACN	Fellow of the American College of Nutrition
1264	FACP	Fellow of the American College of Physicians
1265	FACTS	Flexible Alternating Current Transmission System
1266	FAM	Foreign Affairs Manual
1267	FAO	Food and Agriculture Organization
1268	FAPA	Fellow of the American Psychological Association
1269	FAPHA	Fellow of the American Public Health Association
1270	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1271	FASCAM	Family of Scatterable Mines[1]
1272	FASD	Fetal Alcohol Spectrum Disorder
1273	FASEB	Federation of American Societies for Experimental Biology
1274	FAT	Field Artillery Tractor
1275	FAVS	Future Armoured Vehicle System
1276	FAW	Football Association of Wales
1277	FBCS	Fellow of the British Computer Society
1278	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1279	FBIS	Foreign Broadcast Information Service
1280	FBM	Board foot
1281	fC	Femtocoulomb
1282	FCC	U.S. Federal Communications Commission
1283	FCE	First Certificate in English
1284	FCF	Financial Free Cash Flow
1285	FCLA	Fraud Claims Law Associate
1286	FCO	UK Foreign and Commonwealth Office
1287	FCW	Florida Championship Wrestling
1288	FD	Falun Dafa
1289	FDA	Food and Drug Administration (U.S.)
1290	FDBK	(I) Feedback
1291	Fe	Iron (Latin Ferrum)
1292	FEAST	Forum for European-Australian Science and Technology Cooperation
1293	FEATS	Festival of European Anglophone Theatrical Societies link title
1294	FEBA	Forward Edge of the Battle Area
1295	FED	Field Emission Display
1296	FEDEP	Federation Development Process (Simulation)
1297	FEF	Frontal Eye Field (neurophysiology)
1298	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1299	FENS	Federation of European Neuroscience Societies
1300	FES	Flywheel Energy Storage
1301	FEST	Frankfurt English Speaking Theatre link title
1302	FET	Field-effect transistor
1303	FEZ	Fighter Engagement Zone
1304	fF	Femtofarad
1305	FF	Final Fantasy
1306	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1307	FFC	Free For Chat
1308	FFE	Fukuoka Futures Exchange
1309	FFF	Fédération française de football (French for: French Football Federation)
1310	FFG	Guided Missile Frigate (hull classification symbol)
1311	FFOV	Forward Field Of View
1312	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1313	FFS	For Fuck's Sake
1314	FFT	Final Fantasy Tactics
1315	FG	Falun Gong
1316	fg	Femtogram
1317	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1318	FGOTUS	First Gentleman of the United States
1319	FGR	Flickr Group Roulette
1320	fH	Femtohenry
1321	FHFIF	Foster's Home for Imaginary Friends
1322	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1323	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1324	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1325	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1326	FIBUA	Fighting In Built-Up Areas
1327	FIC	Fellowship for Intentional Community
1328	FID	Foreign Internal Defence
1329	FIE	Fly-In Echelon
1330	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1331	FIFe	Fédération internationale féline (French for: International Feline Federation)
1332	FIFO	First In, First Out
1333	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1334	FIGJAM	Fuck I'm Good, Just Ask Me
1335	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1336	FIN	Finland (ISO 3166 trigram)
1337	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1338	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1339	FIS	Fédération internationale de ski (French for: International Ski Federation)
1340	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1341	FISH	Fluorescence In-Situ Hybridisation
1342	FiST	Fire Support Team
1343	FITS	Flexible Image Transport System
1344	FIU	Florida International University
1345	fJ	Femtojoule
1346	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1347	FJI	Fiji (ISO 3166 trigram)
1348	FJN	Financial Job Network
1349	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1350	fK	Femtokelvin
1351	FKSM	Fort Knox Supplemental Manual
1352	FKT	Fastest Known Time
1353	fL	Femtolitre
1354	FL	Florida (postal symbol)
1355	fl	floruit (Latin for: living) (genealogy)
1356	FLA	Florida,Front Line Assembly,Future Large Aircraft
1357	FLAB	Four-letter abbreviation
1358	FLAC	Free Legal Advice Centres
1359	FLAC	Free Lossless Audio Codec
1360	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1361	FLB	Forward Logistics Base
1362	FLET	Forward Line of Enemy Troops
1363	FLG	Falun Gong
1364	FLIP	Flight Information Publication
1365	FLIR	Forward Looking InfraRed (sensor)
1366	FLK	Falkland Islands (ISO 3166 trigram)
1367	FLOT	Forward Line of Own Troops
1368	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1369	FLQ	Free Legal Questions
1370	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1371	FLSA	Fair Labor Standards Act
1372	FLTSAT	Fleet Satellite
1373	FLTSATCOM	Fleet Satellite Communication System
1374	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1375	FM	Factory Mutual
1376	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)
1377	fm	Femtometre
1378	Fm	Fermium
1379	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1380	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1381	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1382	FMCG	Fast Moving Consumer Goods
1383	FME	Formal Methods Europe
1384	FMECA	Failure Modes and Effect Criticality Analysis
1385	FMJD	Fédération Mondiale du Jeu de Dames
1386	FMLA	Family Medical Leave Act
1387	FoE	Friends of the Earth
1388	FOGC	Federal Oil and Gas Council
1389	FOH	Front Of House
1390	FOIA	Freedom of Information Act
1391	FOM	Federation Object Model
1392	FONSI	Finding of No Significant Impact
1393	FOO	Forward Observation Officer
1394	FOOP	Friends Of Organ Pipes (Volunteer group)
1395	FoS	Family of Systems
1396	FOSE	Fallout 3 Script Extender
1397	FOSE	Federal Office Systems Expo
1398	FOT	Free on truck
1399	FOTA	Fellow of the Orthodontic Technicians Association
1400	FOTC	Flight of the Conchords
1401	FOUO	For Official Use Only
1402	FP	French Polynesia (FIPS 10-4 territory code)
1403	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1404	FPS	Fire Prevention System
1405	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1406	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1407	Fr	Francium
1408	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1409	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1410	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1411	FRICBM	Full Range ICBM
1412	FRO	Faroe Islands (ISO 3166 trigram)
1413	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1414	FRSA	Fellow of the Royal Society of Art
1415	FRY	Federal Republic of Yugoslavia
1416	fs	Femtosecond
1417	fS	Femtosiemens
1418	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1419	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1420	FSCL	Fire Support Co-ordination Line
1421	FSE	Fire Support Element
1422	FSF	Free Software Foundation
1423	FSH	Follicle Stimulating Hormone
1424	FSI	Fuel Stratified Injection
1425	FSS	Fire Support Station
1426	FSSP	Families of Structurally Similar Proteins
1427	FSTC	Foreign Science Technology Center (now NGIC)
1428	fT	Femtotesla
1429	FTC	Federal Trade Commission
1430	FTE	Full Time Equivalent
1431	FTL	Faster Than Light
1432	FTS	Flight Termination System used during some rocket launches
1433	FTS	Fuck That Shit
1434	FU	Smoke (METAR Code)
1435	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1436	fV	Femtovolt
1437	fW	Femtowatt
1438	FW	Forward
1439	FWC	Football World Cup
1440	FWF	Fixed Word Format
1441	FWI	French West Indies
1442	FWIW	For What It's Worth
1443	FWS	U.S. Fish and Wildlife Service
1444	FWT	Fresh Water Tank
1445	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1446	FYA	For Your Agenda
1447	FYDP	Five-Year Defense Plan (U.S.)
1448	FYI	For Your Information
1449	FYROM	Former Yugoslav Republic of Macedonia
1450	FZDZ	Freezing Drizzle (METAR Code)
1451	FZFG	Freezing Fog (METAR Code)
1452	FZRA	Freezing Rain (METAR Code)
1453	g	Gram
1454	G3	Heckler & Koch G3
1455	GAAR	General Anti-Avoidance Rule (tax evasion)
1456	GAB	Gabon (ISO 3166 trigram)
1457	GABA	Gamma-AminoButyric Acid
1458	GAD	Generalized Anxiety Disorder
1459	GAF	Garfield and Friends
1460	GAO	U.S. Government Accountability Office
1461	GAW	Global Atmospheric Watch
1462	GBBC	Great (Global) Backyard Bird Count
1463	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1464	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1465	GCA	Graduate in Claims Administration
1466	GCD	see entry
1467	GCF	Greatest Common Factor
1468	GCI	Ground-controlled interception
1469	GCN	Gamma-ray burst Coordination Network
1470	GCS	Global Coordinate System
1471	GCSE	General Certificate of Secondary Education (UK)
1472	Gd	Gadolinium
1473	GD	Grenada (ISO 3166 digram)
1474	GDL	Game Definition Language
1475	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1476	GDR	German Democratic Republic (cf. DDR)
1477	GDW	Game Designers Workshop
1478	Ge	Germanium
1479	GEBCO	General Bathymetric Chart of the Oceans
1480	GEC	Great Engineering Challenge
1481	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1482	GEEP	Geophysical Equipment Exploration Platform
1483	GEN	Full General (four stars) in the U.S. Army
1484	GeV	Gigaelectron-volt
1485	GEV	Ground Effect Vehicle
1486	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1487	GFI	Ground Fault Interruptor (aka GFCI)
1488	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1489	GFN	Global Footprint Network
1490	GG	Georgia (FIPS 10-4 country code)
1491	GGK	Good God Karma
1492	GHA	Ghana (ISO 3166 trigram)
1493	GHB	gamma-Hydroxybutyric acid
1494	Gi	Gibi
1495	GIB	Gibraltar (ISO 3166 trigram)
1496	GIG	Global Information Grid
1497	GINO	Godzilla In Name Only
1498	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1499	GJD	Geocentric Julian Day
1500	GLAAD	Gay and Lesbian Alliance Against Defamation
1501	GLAC	General Ledger Accounting Code
1502	GLAST	Gamma-ray Large Area Space Telescope
1503	GLBA	Gramm-Leach-Bliley Act
1504	GLC	Gas-liquid chromatography
1505	GLP	Guadeloupe (ISO 3166 trigram)
1506	GLV	Gained Life Value
1507	Gm	Gigametre
1508	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1509	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
1510	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1511	GMFSC	Ground Mobile Forces Satellite Communications
1512	GMO	Genetically Modified Organism
1513	GMPCS	Global Mobile Personal Communications by Satellite
1514	GNAS	Grand National Archery Society
1515	GNB	Guinea-Bissau (ISO 3166 trigram)
1516	GNP	Gross National Product
1517	GNQ	Equatorial Guinea (ISO 3166 trigram)
1518	GnRH	Gonadotropin-Releasing Hormone
1519	GO	Glorioso Islands (FIPS 10-4 territory code)
1520	GOA	General of the Army (United States only)
1521	GOAT	Greatest Of All Time
1522	GOC	General Officer Commanding
1523	GOES	Geostationary Operational Environmental Satellite
1524	GOP	Grand Old Party
1525	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1526	GOSC	General Officer Steering Committee
1527	GOSH	Great Ormond Street Hospital
1528	GOSP	Gas/Oil Separation Plant
1529	GOTS	Government off-the-shelf
1530	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1531	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1532	GPA	Grade Point Average
1533	GPC	Global Path Cache
1534	GPIB	General-Purpose Instrumentation/Interface Bus
1535	GPO	General Post Office
1536	GPPC	Genetics and Public Policy Center
1537	GPR	Ground-Penetrating Radar
1538	GPS	General Problem Solver,Global Positioning System
1539	GPT	General Purpose Technology, Get paid to surf (an online business model)
1540	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]
1541	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1542	GRAIL	Gravity Recovery and Interior Laboratory
1543	GRAS	Generally recognized as safe (FDA list)
1544	GRB	Gamma-Ray Burst
1545	GRC	Greece (ISO 3166 trigram)
1546	GRD	Grenada (ISO 3166 trigram)
1547	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1548	grep	[search] Globally for Regular Expression,Print [lines]
1549	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1550	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1551	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1552	GRL	Greenland (ISO 3166 trigram)
1553	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1554	Gs	Gigasecond
1555	GSA	U.S. General Services Administration
1556	GSD	Graphical Situation Display
1557	GSGB	(God send glamour boy 9-10/10)
1558	GSK	GlaxoSmithKline [good sexual karma]
1559	GSN	Game Show Network
1560	GSO	General Services Officer (U.S. Department of State)
1561	GSOH	Good Sense Of Humour
1562	GSP	Georges St-Pierre (Canadian MMA fighter)
1563	GSR	Gun Shot Residue
1564	GSS	Generic Security Services
1565	GSW	Gunshot wound
1566	GTD	Getting Things Done
1567	GTG	Got To Go (Internet chat)
1568	GTGN	Getty Thesaurus of Geographic Names
1569	GTK	Good To Know (Internet chat)
1570	GTM	Guatemala (ISO 3166 trigram)
1571	GU	Guam (postal symbol; ISO 3166 digram)
1572	GUF	French Guiana (ISO 3166 trigram)
1573	GUILT	Gangliated Utrophin Immuno Latency Toxin
1574	GULCR	Grupo de Usuarios de Linux de Costa Rica
1575	GUT	Grand Unification Theory
1576	GWARS	Ground Warfare System (simulation)
1577	GWAS	Grand Western Archery Society
1578	GWOT	Global War on Terrorism
1579	GXE	Gene-enivronment interaction
1580	GXM	Matrox Graphics eXpansion Module
1581	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1582	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1583	h	Hecto
1584	HAARP	High Frequency Active Auroral Research Program
1585	HAART	Highly Active Anti-Retroviral Therapy
1586	HAI	Human Awareness Institute
1587	HAL	Hardware Abstraction Layer
1588	HALO	High Altitude Low Opening (parachute jump)
1589	HAM	Amateur radio operator
1590	HANS	Head And Neck Support (device used in many race cars)
1591	HARM	High-speed Anti-Radiation Missile
1592	HAW	Heavy Antitank Weapon
1593	HAWK	Homing All the Way Killer (air defence system)
1594	HAZ	Heat-Affected Zone
1595	HAZMAT	Hazardous Materials
1596	HBCD	HexaBromoCycloDodecane
1597	HBO	Home Box Office
1598	HBR	Harvard Business Review
1599	HBT	Heterojunction Bipolar Transistor
1600	HBV	Hepatitis B Virus
1601	HCCI	Homogeneous Charge Compression Ignition
1602	HCF	Highest Common Factor
1603	HCSC	Higher Command and Staff Course
1604	HDL	High-Density Lipoprotein
1605	HDM	Human Decision-Making
1606	HDRA	Henry Doubleday Research Association
1607	He	Helium
1608	HE	High Explosive
1609	HEAT	High Explosive Anti-Tank (ammunition)
1610	HEBA	Hellenic Basketball Clubs Association
1611	HEER	High-Explosive Extended Range (ammunition)
1612	HEIC	Honourable East India Company
1613	HEMP	High-Altitude Electromagnetic Pulse
1614	HEOSS	High Earth Orbit Space Surveillance
1615	HEP	High-Explosive Plastic (ammunition)
1616	HEPA	High-Efficiency Particulate Air (filter)
1617	HESV	Heavy Engineering Support Vehicle
1618	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1619	HEU	Highly Enriched Uranium
1620	Hf	Hafnium
1621	HF	High Frequency
1622	HFE	Human Fertilisation and Embryology (UK Act)
1623	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1624	HFEA	Human Fertilisation and Embryology Authority (UK)
1625	Hg	Mercury (Latin Hydrargyrum)
1626	HGC	UK Human Genetics Commission
1627	HGF	Human Growth Factor
1628	HGTV	Home & Garden Television
1629	HI	Hawaii (postal symbol)
1630	HIH	His (or Her) Imperial Highness
1631	HIM	His (or Her) Imperial Majesty
1632	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1633	HIMEZ	High Altitude Missile Engagement Zone
1634	HIMYM	How I Met Your Mother
1635	HIPAA	U.S. Health Insurance Portability and Accountability Act
1636	Hipparcos	HIgh Precision Parallax COllecting Satellite
1637	Hird	Hurd of interfaces representing depth (cf. HURD)
1638	HiRISE	High Resolution Imaging Science Experiment
1639	HIT	Health Information Technology
1640	HIV	Human Immunodeficiency Virus
1641	HIWT	Hobart Institute of Welding Technology
1642	HJD	Heliocentric Julian Day
1643	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1644	HKG	Hong Kong (ISO 3166 trigram)
1645	HKS	HyperKinetic Syndrome
1646	hL	Hectolitre
1647	HL	Holding Line
1648	HLL	High-Level Language
1649	HLN	Headline News
1650	HLOS	High Level Output Specification
1651	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1652	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1653	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1654	HMF	HydroxyMethyl Furfural
1655	HMO	Health maintenance organization
1656	HMP	Her Majesty's Prison
1657	HMRC	Her/His Majesty's Revenue and Customs
1658	HMSO	Her Majesty's Stationery Office
1659	HMV	His Master's Voice
1660	HN	Honduras (ISO 3166 digram)
1661	HND	Honduras (ISO 3166 trigram)
1662	Ho	Holmium
1663	HO	Honduras (FIPS 10-4 country code)
1664	HOLLAND	Hope Our Love Lasts And Never Dies
1665	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1666	HOT	Highly Optimised Tolerance
1667	HOTAS	Hands on throttle-and-stick
1668	HOV	High Occupancy Vehicle
1669	hp	horse power
1670	HPA	UK Health Protection Agency
1671	HPCL	Hindustan Petroleum Corporation Limited
1672	HPLC	High Performance Liquid Chromatography
1673	HPT	High[er] Payoff Target
1674	HPV	Human Papilloma Virus
1675	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1676	HRD	Human Resource Development
1677	HRF	High iness Forces
1678	HRH	His (or Her) Royal Highness
1679	HRM	His (or Her) Royal Majesty
1680	HRM	Human Resource Management
1681	HRT	Hormone Replacement Therapy
1682	Hs	Hassium
1683	HSBC	The Hong Kong and Shanghai Banking Corporation
1684	HSC	Higher School Certificate
1685	HSM	High School Musical
1686	HSMAD	Human Science/Modeling and Analysis Data
1687	HSN	Home Shopping Network
1688	HSPH	Harvard School of Public Health
1689	HSSI	High-Speed Serial Interface
1690	HST	see entry
1691	HTA	HyperText Application
1692	HTFU	Harden The Fuck Up
1693	HTH	Hope That Helps
1694	HTI	Haiti (ISO 3166 trigram)
1695	HTML	HyperText Markup Language
1696	HTR	Heated Towel Rail
1697	HTS	High-Temperature Superconducting wire
1698	HTTP	HyperText Transfer Protocol
1699	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1700	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1701	HUN	Hungary (ISO 3166 trigram)
1702	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1703	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1704	HVAP	High Velocity Armour Piercing (ammunition)
1705	HVHF	High velocity human factors
1706	HVM	High Velocity Missile
1707	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1708	HWM	Hardware morphing (computer graphics rendering)
1709	HXB	The glycoprotein Tenascian C
1710	HZ	Haze (METAR Code)
1711	Hz	Hertz
1712	IA	Iowa (postal symbol)
1713	IAAL	I Am A Lawyer
1714	IAB	International Association for Biologicals
1715	IAD	Ion Assisted Deposition
1716	IADS	Integrated Air Defence System
1717	IAEA	International Atomic Energy Agency
1718	IAF	{i} Industrial Areas Foundation
1719	IAFG	Information Assurance Focus Group
1720	IANA	Internet Assigned Numbers Authority
1721	IANAL	I Am Not A Lawyer
1722	IAS	Image Assessment System
1723	IASIP	It's Always Sunny in Philadelphia
1724	IATA	International Air Transport Association
1725	IATF	International Automotive Task Force
1726	IATSE	International Alliance of Theatrical Stage Employees
1727	IAUC	International Astronomical Union Circular
1728	IAW	In Accordance With
1729	IB	International Baccalaureate
1730	IBA	Important Bird Area
1731	IBD	Inflammatory Bowel Disease
1732	IBDM	Information Based Decision Making
1733	IBM	International Business Machines
1734	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1735	IBS	Irritable Bowel Syndrome
1736	ICANN	Internet Corporation for Assigned Names and Numbers
1737	ICAO	International Civil Aviation Organization
1738	ICBM	Intercontinental Ballistic Missile
1739	ICBN	International Code of Botanical Nomenclature
1740	ICE	In case of emergency
1741	ICES	International Council for the Exploration of the Sea
1742	ICF	Intelligent Community Forum
1743	ICMP	Internet Control Message Protocol
1744	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1745	ICO	Intermediate Circular Orbit
1746	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1747	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1748	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1749	ICRL	Individual Component Repair List
1750	ICRS	International Celestial Reference System
1751	ICSI	Intracytoplasmic Sperm Injection
1752	ICT	Information and communication technologies
1753	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1754	ICV	Infantry Carrier Vehicle
1755	ICYMI	In Case You Missed It
1756	IDC	International Data Corporation
1757	IDDI	I don't do initialisms (see irony)
1758	IDGAF	I don't give a fuck
1759	IDK	I don't know
1760	IDL	Interface Definition Language
1761	IDN	Indonesia (ISO 3166 trigram)
1762	IEA	International Energy Agency
1763	IEC	International Electrotechnical Commission
1764	IED	Improvised Explosive Device
1765	IELTS	International English Language Testing System
1766	IER	Information Exchange Requirement
1767	IET	Initial Entry Training
1768	IET	Institution of Engineering and Technology
1769	IETF	Internet Engineering Task Force
1770	IEW	Intelligence and Electronic Warfare
1771	IFAB	International Football Association Board
1772	IFAH	International Federation for Animal Health
1773	IFAP	International Federation of Agricultural Producers
1774	IFO	Identified Flying Object (see also UFO)
1775	IFOV	Instantaneous Field of View
1776	IFPI	International Federation of Phonographic Industries
1777	IFRB	International Frequency Registration Board
1778	IFV	Infantry Fighting Vehicle
1779	IG	Inspector General
1780	IGNOU	Indira Gandhi National Open University
1781	IGS	International Ground Station
1782	IHH	Idiopathic Hypogonadotropic Hypogonadism
1783	IHO	International Hydrographic Organization
1784	IHR	Institute for Historical Review
1785	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1786	II	Two (in Roman numerals)
1787	IICA	Inter-American Institute for Cooperation on Agriculture
1788	IIE	Innovative Interstellar Explorer
1789	III	Three (in Roman numerals)
1790	IIRC	If I Recall/Remember Correctly
1791	IISS	International Institute for Strategic Studies
1792	IJN	Imperial Japanese Navy (World War II)
1793	IJWP	Interim Joint Warfare Publication
1794	ILDS	Improved Landmine Detection System
1795	ILO	International Labour Organization
1796	ILRI	International Livestock Research Institute
1797	ILY	I Love You [pronounced ILL-LEE]
1798	IMBD	International Migratory Bird Day
1799	IMDb	Internet Movie Database
1800	IME	In My Experience
1801	IMHO	In My Humble/Honest Opinion
1802	IML	International Mister Leather
1803	IMNSHO	In My Not So Humble Opinion
1804	IMPAC	International Merchant Purchase Authorization Card
1805	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1806	IMPATT	IMPact Avalanche Transit Time diode
1807	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1808	IMRL	Individual Material iness List
1809	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1810	IMsL	International Ms. Leather
1811	IMT	Integrated Management Tool
1812	IMU	International Mathematical Union
1813	In	Indium
1814	INA	Immigration and Nationality Act
1815	INAS	International Near-Earth Asteroid Survey
1816	INCITS	InterNational Committee for Information Technology Standards
1817	IND	India (ISO 3166 trigram)
1818	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1819	inet	the Internet
1820	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1821	INFOSEC	Information Security
1822	INLA	Irish National Liberation Army
1823	INMARSAT	International Maritime Satellite organization
1824	INRIA	Institut national de recherche en informatique et en automatique
1825	INS	Immigration and Naturalization Service
1826	InSAR	Interferometric synthetic aperture radar
1827	INST	Information Standards and Technology
1828	INTERFET	International Force for East Timor
1829	INTSUM	Intelligence Summary
1830	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1831	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1832	IPB	Intelligence Preparation of the Battlefield
1833	IPL	Inferior Parietal Lobule
1834	IPO	Initial Public Offering
1835	IPT	Integrated Product/Project Team
1836	IPTS	Institute for Prospective Technological Studies
1837	IPTV	Internet Protocol TeleVision
1838	IPW	Interrogation of Prisoners of War
1839	Ir	Iridium
1840	IRAD	Internal Research and Development
1841	IRAN	(I) Inspect and Repair As Necessary
1842	IRAS	Infrared Astronomical Satellite
1843	IRB	International Rugby Board
1844	IRBM	Intermediate Range Ballistic Missile
1845	IREA	Intermountain Rural Electric Association
1846	IRINN	Islamic Republic of Iran News Network
1847	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1848	IRN	Iran (ISO 3166 trigram)
1849	IRO	International Refugee Organisation
1850	IRQ	Iraq (ISO 3166 trigram)
1851	IRS	U.S. Internal Revenue Service
1852	IRST	Infra-red Search and Track
1853	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1854	ISAR	Inverse SAR (Synthetic Aperture Radar)
1855	ISB	Intermediate Staging Base
1856	ISBN	International Standard Book Number (ISO 2108)
1857	ISCCP	International Satellite Cloud Climatology Project
1858	ISCII	Indian Standard Code for Information Interchange
1859	ISDN	Integrated Services Digital Network
1860	ISEF	Intel International Science and Engineering Fair
1861	ISEN	Internet Search Environment Number
1862	ISF	Internal Security Force
1863	ISIL	Islamic State of Iraq and the Levant
1864	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1865	ISL	Iceland (ISO 3166 trigram)
1866	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1867	ISMB	International Society of Matrix Biologists
1868	ISMC	Intelligent Sounding Meaningless Conversation
1869	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1870	ISPE	International Society for Pharmacoepidemiology
1871	ISRO	Indian Space Research Organisation
1872	ISSCR	International Society for Stem Cell Research
1873	ISSN	International standard serial number (ISO 3297)
1874	ISTC	Institute of Scientific and Technical Communications (UK)
1875	ISTS	Intel Science Talent Search
1876	ITA	Italy (ISO 3166 trigram)
1877	ITAG	Inertial Terrain-Aided Guidance
1878	ITALY	I'll Truly Always Love You
1879	ITAS	Improved Target Acquisition Sight
1880	ITC	InferoTemporal Cortex (neurophysiology)
1881	ITCZ	Intertropical Convergence Zone
1882	ITEC	Information Technology Exposition & Conference
1883	ITEMS	Interactive Tactical Environment Management System
1884	ITER	International Thermonuclear Experimental Reactor
1885	ITF	International Tennis Federation
1886	ITK	In The Know
1887	ITN	Independent Television News (British)
1888	ITT	International Telephone and Telegraph (U.S.)
1889	ITTO	International Tropical Timber Organization
1890	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1891	Iveco	Industrial Vehicles Corporation
1892	IVF	In Vitro Fertilisation
1893	IVI	Interchangeable Virtual Instrument
1894	IVIS	Inter-Vehicle Information System
1895	IVL	Inter-Visibility Line
1896	IVM	In Vitro [Oocyte] Maturation
1897	IVO	In Vicinity Of
1898	IW	Information Warfare
1899	IWARS	Infantry Warrior Simulation
1900	IWC	International Whaling Commission
1901	IWW	Industrial Workers of the World
1902	IX	Nine (in Roman numerals)
1903	IXT	IntraText digital library; IntraText lexical hypertext
1904	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1905	IZ	Iraq (FIPS 10-4 country code)
1906	J	Joule
1907	J1	Joint [Manpower &] Personnel Directorate
1908	J2	Joint Intelligence Directorate
1909	J3	Joint Operations Directorate
1910	J4	Joint Logistics Directorate
1911	J5	Joint Strategic Plans & Policy Directorate
1912	J7	Joint Operational Plans & Interoperability Directorate
1913	JA	Japan (FIPS 10-4 country code)
1914	JAFT	Just A Field Test
1915	JAL	Japan Airlines
1916	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1917	JAM	Jamaica (ISO 3166 trigram)
1918	JAMA	Journal of the American Medical Association
1919	JANET	Joint Academic Network
1920	JATO	Jet-Assisted Take-Off
1921	JB	Jail Bait
1922	JB	Junior Branch
1923	JBFSA	Joint Blue Force Situational Awareness
1924	JCDB	Joint Common Data Base
1925	JCDS	Joint Chiefs of the Defence Staff
1926	JCIDS	Joint Capabilities Integration and Development System
1927	JCL	Job Control Language
1928	JCP	Java Community Process
1929	JCS	Joint Chiefs of Staff
1930	JCW	Juggalo Championship Wrestling
1931	JDBC	Java Data Base Connectivity
1932	JDEM	Joint Dark Energy Mission
1933	JDL	Jewish Defense League
1934	JE	Jersey (FIPS 10-4 territory code)
1935	JEFX	Joint Expeditionary Force eXperiment
1936	JET	Joint European Torus
1937	JEZ	Joint Engagement Zone
1938	JFACC	Joint Force Air Component Commander
1939	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1940	JFC	Joint Force Commander
1941	JFK	John Fitzgerald Kennedy or the airport named after him.
1942	JFLCC	Joint Force Land Component Commander
1943	JFMCC	Joint Force Maritime Component Commander
1944	JFO	Journal of Field Ornithology
1945	JFSOCC	Joint Force Special Operations Component Commander
1946	JFTX	Joint Field Training Exercise
1947	JH	Japan Highway Public Corporation
1948	JH	Jharkhand (Indian state code)
1949	JI	Joint Implementation
1950	JIB	Joint Information Bureau
1951	JIC	Joint Intelligence Centre
1952	JINI	Java Intelligent Network Infrastructure
1953	JITC	Joint Interoperability Test Command
1954	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1955	JJAP	Japanese Journal of Applied Physics
1956	JL	Japan Airlines (IATA airline designator)
1957	JLA	Justice League of America
1958	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1959	JMS	Java Message Service
1960	JN	Jan Mayen Island (FIPS 10-4 territory code)
1961	JNI	Java Native Interface
1962	JNLP	Java Network Launch Protocol
1963	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1964	JOA	Joint Operations Area
1965	JOPES	Joint Operations Planning and Execution System
1966	JOR	Jordan (ISO 3166 trigram)
1967	JOTS	Joint Operations Tactical System
1968	JPL	Jet Propulsion Laboratory
1969	JPN	Japan (ISO 3166 trigram)
1970	JPOW	Joint Project Optic Windmill
1971	JRDF	Joint Rapid Deployment Forces
1972	JRE	Java Runtime Environment
1973	JREF	James Randi Educational Foundation
1974	JROC	Joint Requirements Oversight Council
1975	JROCM	JROC Memorandum
1976	JRRF	Joint Rapid Reaction Force
1977	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1978	JSAP	Japan Society of Applied Physics
1979	JSCSC	Joint Services Command and Staff College
1980	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
1981	JSF	Joint Strike Fighter
1982	JSIMS	Joint Simulation System
1983	JSOA	Joint Special Operations Area
1984	JSOTF	Joint Special Operations Task Force
1985	JSP	JavaServer Page
1986	JSP	Joint Services Publication
1987	JSR	Java Specification Request
1988	JSS	Joint Support Ship Project
1989	JTC	Joint Training Confederation
1990	JTF	Joint Task Force
1991	JTFEX	Joint Task Force Exercise
1992	JTLS	Joint Theater Level Simulation
1993	JTMD	Joint Theatre Missile Defence
1994	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
1995	JU	Juan de Nova Island (FIPS 10-4 territory code)
1996	JUGFET	JUnction Gate Field-Effect Transistor
1997	JUICE	JUpiter ICy Moon Explorer
1998	JUO	Joint Urban Operations
1999	JV	Joint Venture,Junior Varsity
2000	JW	Jehovah's Witnesses
2001	JWARS	Joint Warfare System (simulation)
2002	JWP	Joint Warfare Publication
2003	JY	Japanese Yen
2004	JZ	Joint Zone
2005	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
2006	k	Kilo-
2007	K	picokelvin
2008	K9	Canine Police Unit
2009	Ka	Kamov Design Bureau
2010	kA	Kiloampere
2011	KA	Knowledge Acquisition,Karnataka (Indian state code)
2012	KAF	Kandahar Air Field
2013	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2014	KARNAC	Knowledge Aided Retrieval in Activity Context
2015	KARR	Knight Automated Roving Robot (Knight Rider character)
2016	KATUSA	Korean Augmentation To United States Army
2017	KAZ	Kazakhstan (ISO 3166 trigram)
2018	KBE	Knight Commander of the Order of the British Empire
2019	KBO	Kuiper Belt Object
2020	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2021	kC	Kilocoulomb
2022	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2023	KCL	King's College London
2024	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2025	KCS	Kansas City Southern Railway (AAR reporting mark)
2026	KD	Kawasaki Disease,Kraft Dinner
2027	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2028	KEDO	Korean Peninsula Energy Development Organization
2029	KEN	Kenya (ISO 3166 trigram)
2030	KERA	Kentucky Education Reform Act (of 1990)
2031	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2032	KESR	Kent and East Sussex Railway.
2033	KET	Kentucky Educational Television,Key English Test
2034	kF	Kilofarad
2035	KFC	Kentucky Fried Chicken
2036	KFOR	UN Kosovo Force
2037	KFUPM	King Fahd University of Petroleum & Minerals
2038	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2039	KGO	Knight of the Guelphic Order of Hanover
2040	KGZ	Kyrgyzstan (ISO 3166 trigram)
2041	KH	Cambodia (ISO 3166 digram)
2042	kH	Kilohenry
2043	KHL	Kontinental Hockey League
2044	KHM	Cambodia (ISO 3166 trigram)
2045	KHz	Kilohertz
2046	Ki	Kibi
2047	KI	Kiribati (ISO 3166 digram)
2048	KIA	Killed In Action
2049	KIDS	Knowledge-based Integrated Design System
2050	KIR	Kiribati (ISO 3166 trigram)
2051	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2052	KIT	Keep In Touch
2053	KITECH	Korean Institute of Industrial Technology
2054	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2055	kJ	Kilojoule
2056	kK	Kilokelvin
2057	KKK	Ku Klux Klan
2058	kL	Kilolitre
2059	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2060	KLOC	Kilo Lines Of Code
2061	KM	Comoros,Knowledge Management
2062	kN	Kilonewton
2063	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2064	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2065	KO	Knocked Out
2066	KOR	Republic of Korea (ISO 3166 trigram)
2067	KP	Kim Possible
2068	KPMG	Klynveld,Peat,Marwick,Goerdeler
2069	KPNO	Kitt Peak National Observatory
2070	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2071	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2072	Kr	Krypton
2073	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2074	kS	Kilosiemens
2075	KSC	Kennedy Space Center
2076	KSI	Killed or Seriously Injured
2077	KSU	Kansas State University
2078	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2079	kT	Kilotesla
2080	KTS	Knight of the Tower and Sword (of Portugal)
2081	KU	Kuwait (FIPS 10-4 country code)
2082	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2083	kV	Kilovolt
2084	KV	Kosovo
2085	kW	Kilowatt
2086	KW	Kuwait (ISO 3166 digram)
2087	KWB	Kids' WB!
2088	KWT	Kuwait (ISO 3166 trigram)
2089	KX	Cayman Airways (IATA airline designator)
2090	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2091	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2092	KZN	KwaZulu-Natal
2093	La	Lanthanum
2094	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2095	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2096	LAB	Logistics Assault Base
2097	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2098	LACMA	Los Angeles County Museum of Art
2099	LAD	Laser Aiming Device
2100	LADW	Local Air Defence Warning
2101	LAESI	Local Authority & Emergency Service Information
2102	LAN	Local Area Network
2103	LANL	Los Alamos National Laboratory
2104	LAO	Laos (ISO 3166 trigram)
2105	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2106	LARC	Livermore Advanced Research Computer (cf. LLNL)
2107	LARP	Live-Action Role-Playing
2108	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2109	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2110	LATA	Local Access Transport Area
2111	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2112	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2113	LAW	Light Antitank Weapon
2114	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2115	LB	Lebanon (ISO 3166 digram)
2116	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2117	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2118	LBN	Lebanon (ISO 3166 trigram)
2119	LBNL	Lawrence Berkeley National Laboratory
2120	LBR	Liberia (ISO 3166 trigram)
2121	LBS	Location-Based Services
2122	LBT	Large Binocular Telescope
2123	LBW	Leg Before Wicket
2124	LBY	Libya (ISO 3166 trigram)
2125	LCA	Saint Lucia (ISO 3166 trigram)
2126	LCC	Land Component Commander
2127	LCCP	Light Contingency Communications Package
2128	LCD	Liquid Crystal Display
2129	LCM	Least/Lowest Common Multiple
2130	LCS	League of Legends Championship Series
2131	LDA	Lateral Drift Apparatus (paratroops)
2132	LDC	Lesser Developing/Developed Country
2133	LDL	Low-Density Lipoprotein
2134	LDV	Local Defence Volunteers (British Home Guard)
2135	LDW	Lane Departure Warning (ADAS)
2136	LE	Lebanon (FIPS 10-4 country code)
2137	LEC	Local Exchange Carrier
2138	LED	Light-Emitting Diode
2139	LEGAD	Legal Advice
2140	Legs	level emotion gad speed
2141	LEMOSS	Long-Endurance MObile Submarine Simulator
2142	LEN	Large Extension Node
2143	LEP	Large Electron-Positron collider
2144	LER	Loss-Exchange Ratio
2145	LEU	Low-Enriched Uranium
2146	LF	Low Frequency
2147	LFO	Low Frequency Oscillation / Oscillator
2148	LFTR	Liquid fluoride thorium reactor
2149	LG	Latvia (FIPS 10-4 country code)
2150	LGM	Little Green Men
2151	LGS	Landsat Ground Station
2152	LHC	Large Hadron Collider
2153	LHS	Left Hand Side
2154	Li	Lithium
2155	LIBOR	London Interbank Offered Rate
2156	LIBS	Laser Induced Breakdown Spectroscopy
2157	LIE	Liechtenstein (ISO 3166 trigram)
2158	LIGO	Laser Interferometer Gravitational-Wave Observatory
2159	LINEAR	Lincoln Near-Earth Asteroid Research
2160	LISA	Laser Interferometer Space Antenna
2161	LIVE	Liquid Inertial Vibration Eliminator
2162	LJJ	Lord Justices of Appeal
2163	LK	Sri Lanka (ISO 3166 digram)
2164	LKA	Sri Lanka (ISO 3166 trigram)
2165	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2166	LLAD	Low Level Air Defence
2167	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2168	LLC	Limited Liability Company
2169	LLLTV	Low-Light Level Television
2170	LLNL	Lawrence Livermore National Laboratory
2171	LLP	Limited Liability Partnership
2172	LLTR	Low-Level Transit Route
2173	LMAO	Laughing My Ass Off (Internet shorthand)
2174	LMB	Lick My Balls
2175	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2176	LMN	Lifetime Movie Network
2177	LMS	Like My Status (Internet shorthand)
2178	LMV	() Light Motor Vehicle
2179	LNER	London and North Eastern Railway
2180	LNG	Liquefied Natural Gas
2181	LNO	Liaison Officer
2182	LO	Slovakia (FIPS 10-4 country code)
2183	LOA	Limit Of Advance
2184	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2185	LoD	Lines of Development (UK)
2186	LOFAR	Low Frequency Analysis and Recording
2187	LOGPAC	Logistics Package
2188	LOL	Laughing Out Loud (Internet shorthand)
2189	LOMEZ	Low Altitude Missile Engagement Zone
2190	LONEOS	Lowell Observatory Near-Earth-Object Search
2191	LORTID	LOng Range Target IDentification
2192	LOS	Line Of Sight
2193	LOSAT	Line-Of-Sight Anti-Tank (missile)
2194	LOTA	Licentiate of the Orthodontic Technicians Association
2195	LOTIS	Livermore Optical Transient Imaging System
2196	LOTS	Logistics Over-The-Shore
2197	LPC	Linear Predictive Coding
2198	LPG	Liquefied Petroleum Gas (cf. LNG)
2199	LPI	Low Probability of Intercept
2200	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2201	Lr	Lawrencium
2202	LR	Liberia (ISO 3166 digram)
2203	LRC	Logistics iness Center
2204	LRGW	Long-Range Guided Weapon
2205	LRICBM	Limited Range ICBM
2206	LRIP	Low Rate Initial Production
2207	LRP	Logistics Release Point
2208	LRPE	Long-Range Planning Element
2209	LRS	Long Range Surveillance
2210	LRU	Line-Replaceable Unit
2211	LSI	Large-Scale Integration
2212	LSIF	Labour Sponsored Investment Fund
2213	LSND	Liquid Scintillator Neutrino Detector
2214	LSO	Lesotho (ISO 3166 trigram)
2215	LSST	Large Synoptic Survey Telescope
2216	Lt	Lieutenant
2217	LtC	Lieutenant-Colonel (U.S.)
2218	LTC	Long-Term Costing
2219	Ltd	Limited
2220	LTDP	Long-Term Defence Plan
2221	LTI	Linear Time-Invariant
2222	LTM	Acronym for Laughing To Myself
2223	LTP	Long-Term Potentiation
2224	LTU	Lithuania (ISO 3166 trigram)
2225	LU	Acronym Love You
2226	LU	Loonatics Unleashed
2227	Lu	Lutetium
2228	LUCA	Last Universal Common Ancestor
2229	LUG	Linux User Group
2230	LULU	Locally Unwanted Land Use (urbanism)
2231	LUX	Luxembourg (ISO 3166 trigram)
2232	LVA	Latvia (ISO 3166 trigram)
2233	LVEF	Left Ventricular Ejection Fraction
2234	Lw	Lawrencium (obsolete 1963)
2235	LWR	Laser warning receiver
2236	LWRC	Land Warfare Resources Corporation
2237	LWS	Land Warrior System
2238	LX	Electrics (theatrical term)
2239	LYAO	Laugh Your Ass Off
2240	LYLAS	Love You Like A Sister
2241	Ma	Megaannum
2242	mA	Milliampere
2243	MAA	Mathematical Association of America
2244	MAAC	Metro Atlantic Athletic Conference
2245	MACE	Multi-Agent Computing Environment
2246	MACHO	MAssive Compact Halo Object
2247	MAF	Maintenance Action Form
2248	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2249	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2250	MAGTF	Marine Air-Ground Task Force
2251	MALD	Miniature Air-Launched Decoy
2252	MANPADS	MAN-Portable Air Defence System
2253	MANPRINT	MANpower and PeRsonnel INTegration
2254	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2255	MAOI	Monoamine oxidase inhibitor
2256	MAPS	Monitoring Avian Productivity and Survivorship
2257	MAR	Morocco (ISO 3166 trigram)
2258	MarBEF	Marine Biodiversity and Ecosystem Functioning
2259	MARCENT	United States Marine Forces Central Command
2260	MARFORCC	Marine Force Component Commander
2261	MASAS	Monte Agliale Supernovae and Asteroid Survey
2262	Maser	Microwave Amplification by Stimulated Emission of Radiation
2263	MASH	Mobile Army Surgical Hospital
2264	MASINT	Measurement And Signature Intelligence
2265	MAVS	Mobile Artillery Vehicle System
2266	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2267	MBCC	Migratory Bird Conservation Commission (U.S.)
2268	MBCS	Multi-Byte Character Set
2269	MBI	Moody Bible Institute
2270	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2271	MBM	Meat and Bone Meal
2272	MBT	Main Battle Tank
2273	MBTI	Myers-Briggs Type Indicator
2274	mC	Millicoulomb
2275	MCDL	Model Composition Definition Language
2276	MCFT	Modified Compression Field Theory
2277	MCG	Melbourne Cricket Ground
2278	MCIS	Mellon Collie and the Infinite Sadness
2279	MCM	Mine Counter-Measures
2280	MCMV	Mine Counter-Measure Vessel
2281	MCR	My Chemical Romance
2282	MCSF	Marine Corps Security Forces
2283	MCT	Movement Control Team
2284	MCTIS	Mounted Co-operative Target Identification System
2285	Md	Mendelevium
2286	MDNA	Madonna's 12th studio album title (2012)
2287	MDO	Membership Driven Organisation
2288	MDP	Markov Decision Process
2289	MDT	Mountain Daylight Time (UTC-6 hours)
2290	MDV	Maldives (ISO 3166 trigram)
2291	Me	Messerschmitt
2292	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2293	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)
2294	MEDEVAC	Medical evacuation
2295	MEDS	Mission Essential Data Set
2296	MEG	MagnetoEncephaloGraphy
2297	MELT	Metallic Line/Loop Test (ing)
2298	MEMS	Microelectromechanical System
2299	MER	Mars Exploration Rover
2300	MERL	Mitsubishi Electric Research Laboratories
2301	MES	Manufacturing Execution Systems
2302	METAR	[Meteorological] Aviation Routine weather report
2303	METOC	Meteorological and Oceanographic
2304	MeV	Megaelectronvolt
2305	MEX	Mexico (ISO 3166 trigram)
2306	MEZ	Missile Engagement Zone
2307	mF	Millifarad
2308	MGPAM	My Gym Partner's a Monkey
2309	MGS	Mobile Gun System
2310	mH	Millihenry
2311	MHC	Major Histocompatibility Complex
2312	MHHW	Mean Higher High Water (nautical charts)
2313	MHL	Marshall Islands (ISO 3166 trigram)
2314	MHLW	Mean Higher Low Water (nautical charts)
2315	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2316	MHW	Mean High Water (nautical charts)
2317	MHWN	Mean High Water Neaps (nautical charts)
2318	MHWS	Mean High Water Springs (nautical charts)
2319	MHz	Megahertz
2320	Mi	Mebi
2321	MIA	Missing In Action
2322	MICLIC	Mine Clearing Line Charge
2323	MICOM	Missile Command
2324	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2325	MIDAS	Man-machine Integration Design and Analysis System
2326	MIDI	Musical Instrument Digital Interface
2327	MIDS	Multi-Function Information Distribution System
2328	MIFG	Shallow Fog (METAR Code)
2329	MIKE	Monitoring of Illegal Killing of Elephants
2330	MIL	Man-In-the-Loop
2331	MILC	Mirrorless interchangeable-lens camera
2332	MILF	Mother I'd Like to Fuck
2333	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2334	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2335	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2336	MIRV	Multiple Independent Reentry Vehicle
2337	MISREP	Mission Report
2338	MISSI	Multilevel Information System Security Initiative
2339	MITL	Man-In-The-Loop
2340	MITS	see entry
2341	mJ	Millijoule
2342	MJD	Modified Julian Day
2343	mK	Millikelvin
2344	MKG	Michael Kidd-Gilchrist (American basketball player)
2345	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2346	mL	Millilitre
2347	MLB	Major League Baseball
2348	MLC	Member of the Legislative Council (in India)
2349	MLE	Maximum likelihood estimation
2350	MLHW	Mean Lower High Water (nautical charts)
2351	MLI	Mali (ISO 3166 trigram)
2352	MLL	Major League Lacrosse
2353	MLLW	Mean Lower Low Water (nautical charts)
2354	MLP	My Little Pony
2355	MLRS	Multiple-Launch Rocket System
2356	MLT	Malta (ISO 3166 trigram)
2357	MLW	Mean Low Water (nautical charts)
2358	MLWN	Mean Low Water Neaps (nautical charts)
2359	MLWS	Mean Low Water Springs (nautical charts)
2360	Mm	Megametre
2361	mm	Millimetre
2362	MMEV	Multi-Mission Effects Vehicle
2363	MMI	Magical MonkeyZ Inc.
2364	MMI	Man-Machine Interface
2365	MMI	McLean Meditation Institute
2366	MMIC	McLean Meditation Institute Certified
2367	MMO	Massively Multiplayer Online (computer game)
2368	MMOR	Master of Management in Operations Research
2369	MMORPG	Massively multiplayer online role-playing game
2370	MMPR	Mighty Morphin Power Rangers
2371	MMS	Multimission Modular Spacecraft
2372	Mn	Manganese
2373	mN	Millinewton
2374	MNB	Multinational Brigade
2375	MNE	Montenegro (ISO 3166 trigram)
2376	MNMF	Multi-National Maritime Force
2377	MNP	Northern Mariana Islands (ISO 3166 trigram)
2378	MNS	Mission Needs Statement
2379	Mo	Molybdenum
2380	MOA	Museum of Art (Brigham Young University)
2381	MOCAS	Mechanization Of Contract Administration Services
2382	MoD	Ministry of Defence (United Kingdom) and various other countries
2383	modem	Modulator-Demodulator
2384	Moe	Marvel of entertainment
2385	MOE	Measure Of Effectiveness
2386	MOF	Ministry of Finance (Japan)
2387	MOFA	Ministry of Foreign Affairs (Japan)
2388	MOID	Minimum Orbital Intersection Distance
2389	MOJWA	Movement for Oneness and Jihad in West Africa
2390	MOLO	Mobile Other Licensed Operator (UK)
2391	MOM	Master's Degree in Oriental medicine
2392	MOM	Message Oriented Middleware
2393	MoM	Multiple of the median
2394	MoMA	Museum of Modern Art (NYC)
2395	MOND	Modified Newtonian Dynamics
2396	MOO	Measure Of Outcome
2397	MOPP	Mission-Oriented Protective Posture
2398	MORP	Meteorite Observation and Recovery Project
2399	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2400	MOT	Ministry of Transport (UK)
2401	MOTA	Member of the Orthodontic Technicians Association
2402	MOTESS	Moving Object and Transient Event Search System
2403	MOU	Memorandum Of Understanding
2404	MOW	Maintenance of way (also MW)
2405	MOZ	Mozambique (ISO 3166 trigram)
2406	MPa	Megapascal
2407	mPa	Millipascal
2408	MPAA	Motion Picture Association of America
2409	MPEC	Minor Planet Electronic Circular
2410	MPEG	Motion Pictures (Coding) Experts Group
2411	MPEV	Multi-Purpose Engineering Vehicle
2412	MPF	Maritime Prepositioning Force
2413	MPFC	Medial PreFrontal Cortex
2414	MPG	Miles Per Gallon
2415	MPMC	Medial PreMotor Cortex
2416	MPSI	Member of the Pharmaceutical Society of Ireland
2417	MPSoC	MultiProcessor System-on-Chip
2418	MPSRON	Maritime Propositioning Ship Squadron
2419	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2420	MRAV	Multi-Role Armoured Vehicle
2421	MRBM	Medium Range Ballistic Missile
2422	MRC	Maintenance Requirements Card
2423	MRD	Motorized Rifle Division
2424	MRGW	Medium-Range Guided Weapon
2425	MRI	Magnetic Resonance Imaging
2426	MRL	Multiple Rocket Launcher
2427	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2428	MRS	Magnetic Resonance Spectroscopy
2429	MRSA	Methicillin-resistant Staphylococcus aureus
2430	MRTFB	U.S. Major Range and Test Facility Base
2431	Ms	Megasecond
2432	mS	Millisiemens
2433	MSD	Minimum Safe Distance
2434	MSDB	Multi Source Data Base
2435	MSE	Multiple Subscriber Element
2436	MSG	Message
2437	MSLP	Mean Sea Level Pressure
2438	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2439	MSO	Multiple System Operator
2440	MSPB	Merit Systems Protection Board
2441	MSSA	Methicillin-susceptible Staphylococcus aureus
2442	Mt	Meitnerium
2443	mT	Millitesla
2444	MTBF	Mean time between failures
2445	MtF	Male-to-female transsexual
2446	MTG	Magic: The Gathering
2447	MTQ	Martinique (ISO 3166 trigram)
2448	MTT	Methylthiazol tetrazolium (assay)
2449	MTWS	MAGTF Tactical Warfare System
2450	MUS	Mauritius (ISO 3166 trigram)
2451	mV	Millivolt
2452	MVC	Missouri Valley Conference
2453	MVFC	Missouri Valley Football Conference
2454	MVNO	Mobile virtual network operator
2455	mW	Milliwatt
2456	MWESH	Machismo Wizards Extended SHelter (operating system)
2457	MWI	Malawi (ISO 3166 trigram)
2458	MWOA	Mount Wilson Observatory Association
2459	MWTB	Mounted Warfare Test Bed
2460	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2461	MYOB	Mind Your Own Business
2462	MYS	Malaysia (ISO 3166 trigram)
2463	MYT	Mayotte (ISO 3166 trigram)
2464	n	Nano
2465	N3F	National Fantasy Fan Federation
2466	nA	Nanoampere
2467	Na	Sodium (Latin Natrium)
2468	NAA	N-Acetylaspartate
2469	NAAD	North American Air Defense
2470	NAAQS	National Ambient Air Quality Standards
2471	NAAWS	NATO Anti-Air Warfare System
2472	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2473	NACC	North Atlantic Cooperation Council
2474	NACISA	NATO Communications and Information Systems Agency
2475	NACMA	NATO Air Command and Control System Management Agency
2476	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2477	NAEC	U.S. Naval Air Engineering Center
2478	NAFERA	Native American Free Exercise of Religion Act
2479	NAFLD	NonAlcoholic Fatty Liver Disease
2480	NAFO	Northwest Atlantic Fisheries Organization
2481	NAFTA	North American Free Trade Agreement
2482	NAGPRA	Native American Graves Protection and Repatriation Act
2483	NAICS	North American Industry Classification System
2484	NAIL	Neurotics Anonymous
2485	NAILS	National Airspace Integrated Logistics System
2486	NAIRU	Non Accelerating Inflation Rate of Unemployment
2487	NAK	Negative Acknowledge
2488	NAM	Namibia (ISO 3166 trigram)
2489	NAMBLA	North American Man-Boy Love Association
2490	NAMRL	Naval Aerospace Medical Research Laboratory
2491	NaN	Not A Number (computing)
2492	NAO	UK National Audit Office
2493	NAPS	Navy Acquisition Procedures Supplement
2494	NARA	(U.S.) National Archives and Records Administration
2495	NARAL	National Abortion Rights Action League
2496	NARDAC	Naval Regional Data Automation Center
2497	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2498	NARPV	National Association for Remotely Piloted Vehicles
2499	NASCAR	National Association for Stock Car Auto Racing
2500	NASDAQ	National Association of Securities Dealers Automated Quotations
2501	NASED	National Association of State Election Directors [1][2]
2502	NASH	Non-Alcoholic Steatohepatitis
2503	NASP	National Aerospace Plane
2504	NASS	National Association of Secretaries of State [3]
2505	NatGeo	National Geographic
2506	NaUKMA	National University of Kyiv-Mohyla Academy
2507	NAV	Navigation[al]
2508	NAVCAMS	Naval Communications Area Master Station
2509	NAVCC	National Audio-Visual Conservation Center
2510	NAVCENT	Naval Forces U.S. Central Command
2511	NAVDAC	Naval Data Automation Command
2512	NAVEUR	Naval Forces U.S. European Command
2513	NAVFOR	Naval Force
2514	NAVMACS	Naval Modular Automatic Communication Subsystem
2515	NAVNET	Navy Network
2516	NAVS	Non-Cooperative Airborne Vector Scoring
2517	NAVSAT	Navigation Satellite
2518	NAVSPACECOM	U.S. Navy Space Command
2519	NAVSPASUR	U.S. Naval Space Surveillance System
2520	NAVSTAR	Navigation Satellite Timing And Ranging
2521	NAVTACNET	Navy Tactical Network
2522	NAWC	U.S. Naval Air Warfare Center
2523	Nb	Niobium
2524	NBA	National Basketball Association
2525	NBL	National Basketball League (Australia)
2526	NBT	Nitroblue tetrazolium (assay)
2527	nC	Nanocoulomb
2528	NCA	National Command Authority
2529	NCAR	U.S. National Center for Atmospheric Research
2530	NCB	National Codification Bureau
2531	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2532	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2533	NCDDR	U.S. National Center for the Dissemination of Disability Research
2534	NCI	U.S. National Cancer Institute
2535	NCL	New Caledonia (ISO 3166 trigram)
2536	NCLR	National Council of La Raza
2537	NCMO	No Commitment Make Out
2538	NCO	Non-Commissioned Officer
2539	NCP	Net Contracted Purchases
2540	NCR	National Cash Register Co.
2541	NCTR	Non-Co-operative Target Recognition
2542	NCW	Network Centric Warfare
2543	Nd	Neodymium
2544	NDAA	U.S. National Defense Authorization Act
2545	NDBP	Non-Departmental Public Body (Scotland)
2546	NDP	New Democratic Party (Canada)
2547	NDS	Nintendo DS
2548	Ne	Neon
2549	NECTEC	National Electronics and Computer Technology Center (Thailand)
2550	NEMS	National Energy Modeling System (USDOE-EIA)
2551	NEPA	National Environmental Policy Act
2552	NER	Niger (ISO 3166 trigram)
2553	NERICA	New Rice for Africa
2554	NESP	NSA/CSS Enterprise Standards Program
2555	NET	National Educational Television
2556	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2557	NETL	(US) National Energy Technology Laboratory
2558	NETWARS	Network Warfare Simulation
2559	NEX	Navy EXchange
2560	nF	Nanofarad
2561	NF	Norfolk Island (ISO 3166 digram)
2562	NFER	National Foundation for Educational Research
2563	NFG	No Fucking Good
2564	NFHS	National Federation of State High School Associations
2565	NFI	Not F****** Interested
2566	NFK	Norfolk Island (ISO 3166 trigram)
2567	Nfld	Newfoundland
2568	NFPA	National Fluid Power Association (United States)
2569	NFT	No Further Text
2570	NGATS	New Generation Army Targetry System
2571	NGH	Northern General Hospital
2572	NGO	non-governmental organization
2573	NGS	Naval Gunfire Support
2574	nH	Nanohenry
2575	NHANES	National Health and Nutrition Examination Survey
2576	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2577	NHB	No Holds Barred radio (Link)
2578	NHL	National Hockey League
2579	NHRA	National Hot Rod Association
2580	NHS	National Health Service (UK)
2581	Ni	Nickel
2582	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2583	NIAG	NATO Industrial Advisory Group
2584	NIAID	National Institute of Allergies and Infectious Disease
2585	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2586	NIB	New In Box (Internet auction/trading listings)
2587	NIBP	Non-invasive blood pressure monitor
2588	NicA	Nicotine Anonymous
2589	NICAP	National Investigations Committee on Aerial Phenomena
2590	NICE	UK. National Institute for Health and Clinical Excellence
2591	NICHD	National Institute of Child Health and Human Development [4]
2592	NICP	National Inventory Control Point
2593	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2594	NIDRR	National Institute on Disability Research and Rehabilitation
2595	NIEHS	National Institute of Environmental Health Sciences
2596	NIIN	National Item Identification Number
2597	NIMA	National Imagery and Mapping Agency (became NGA)
2598	NIMBY	Not In My Back Yard (See NOME)
2599	NIMG	Not In My Generation
2600	NIN	Nine Inch Nails (band)
2601	NIPR	National Institute of Polar Research (Japan)
2602	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2603	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2604	NISCAP	NSA Information System Certification and Accreditation Program
2605	NISER	National Institute of Science Education and Research
2606	NIST	National Institute of Standards and Technology
2607	NITFS	National Imagery Transmission Format Standard
2608	NIU	Niue (ISO 3166 trigram)
2609	nJ	Nanojoule
2610	NJ	New Jersey (postal symbol)
2611	NJHS	National Junior Honor Society
2612	NJPW	New Japan Pro Wrestling
2613	nK	Nanokelvin
2614	NKA	No Known Allergies
2615	nL	Nanolitre
2616	NLB	Non-Linear Battlefield
2617	NLD	Netherlands (ISO 3166 trigram)
2618	NLF	National Liberation Front (disambiguation)
2619	NLL	National Lacrosse League
2620	NLW	Non-Lethal Weapon
2621	nm	Nanometre
2622	NM	New Mexico (postal symbol)
2623	NMCI	Navy Marine Corps Intranet
2624	NMCS	Not Mission Capable Supply (SM&R code)
2625	NMD	U.S. National Missile Defense
2626	NMN	No middle name
2627	NMR	Nuclear Magnetic Resonance
2628	NMSG	NATO Modelling and Simulation Group
2629	nN	Nanonewton
2630	NNE	North North-East
2631	NNSA	U.S. National Nuclear Security Administration
2632	NNW	North North-West
2633	No	Nobelium
2634	NOAA	U.S. National Oceanic and Atmospheric Administration
2635	NOAF	Norwegian Air Force
2636	NOAO	National Optical Astronomy Observatory
2637	NOC	UK. National Oceanography Centre
2638	NODEF	NATO Oceanographic Data Exchange Format
2639	NOGI	New Orleans Grande Isle (award for diving)
2640	NOLF	Navy OutLying Field
2641	NOME	Not on Mars Either
2642	NOME	Not on Mars Either (see NIMBY)
2643	NOR	Norway (ISO 3166 trigram)
2644	NORELPREF	No religious preference
2645	NORTHAG	Northern Army Group
2646	NOSA	NATO OSI Security Architecture
2647	NOTAFLOF	No One Turned Away For Lack Of Funds
2648	NOW	National Organization for Women
2649	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2650	NPB	Nippon Professional Baseball
2651	NPCS	Non-Passenger Coaching stock (in Railways)
2652	NPD	Nationaldemokratische Partei Deutschlands (German)
2653	NPDI	New Product Development and Introduction
2654	NPG	Needline/Network Participation Group
2655	NPH	Normal Pressure Hydrocephalus
2656	NPO	nothing by mouth
2657	NPOV	Neutral Point Of View
2658	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2659	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2660	NRA	National Rifle Association
2661	NRAO	National Radio Astronomy Observatory
2662	NRDC	(U.S.) Natural Resources Defense Council
2663	NREL	U.S. National Renewable Energy Laboratory
2664	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2665	NRMP	National Resident Matching Program (U.S. medicine)
2666	NRO	U.S. National Reconnaissance Office
2667	NRT	Near Real Time
2668	NRU	Nauru (ISO 3166 trigram)
2669	ns	Nanosecond
2670	nS	Nanosiemens
2671	NSABB	National Science Advisory Board for Biosecurity
2672	NSAID	Non-Steroidal Anti-Inflammatory Drug
2673	NSB	Norges Statsbaner (Norwegian State Railways)
2674	NSC	National Security Council
2675	NSDL	National Science Digital Library (US)
2676	NSG	National System for Geospatial-Intelligence
2677	NSN	National Stock Number
2678	NSNA	National Student Nurses' Association
2679	NSO	National Standardization Office (ABCA)
2680	NSS	(U.S.) Naval Simulation System
2681	NST	(UK) Nimrod Software Team
2682	NSTAC	National Security Telecommunications Advisory Committee
2683	NSW	New South Wales (postal symbol)
2684	nT	Nanotesla
2685	NTDS	Naval Tactical Data System
2686	NTP	Network Time Protocol
2687	NTR	Network Time Reference
2688	NTRA	National Thoroughbred Racing Association
2689	NTSB	National Transportation Safety Board
2690	NTV	Non-Tactical Vehicle
2691	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2692	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2693	NUTS	Nuclear Utilization Target Selection
2694	NUWC	U.S. Naval Undersea Warfare Center
2695	nV	Nanovolt
2696	NVEOL	Night Vision and Electro-Optics Laboratory
2697	NVG	Night Vision Goggles
2698	NVL	Night Vision Laboratory
2699	nW	Nanowatt
2700	NW	North-West
2701	NW	Nuclear Weapon
2702	NWA	National Wrestling Alliance
2703	NWF	National Wildlife Federation
2704	NWFZ	Nuclear-Weapon-Free Zone
2705	NWHN	U.S. National Women's Health Network
2706	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2707	NWOAHM	New Wave of American Heavy Metal
2708	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2709	NWRA	National Wildlife Rehabilitators Association
2710	NWSL	National Women's Soccer League (U.S.)
2711	NWT	North-West Territories
2712	NXA	21st arcade game in the Pump It Up series
2713	NXD	Native XML
2714	NXE	New Xbox Experience
2715	NXG	New Cross Gate station
2716	NXL	National XBall League
2717	NXN	Nike Cross Nationals
2718	NY	New York (postal symbol)
2719	NYC	New York City
2720	NYHA	New York Heart Association
2721	NYO	National Youth Orchestra of Great Britain
2722	NYSE	New York Stock Exchange
2723	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2724	NZC	New Zealand Cricket
2725	NZL	New Zealand (ISO 3166 trigram)
2726	NzL	Noze looan (online/event listings)
2727	NZOSS	New Zealand Open Source Society
2728	NZRU	New Zealand Rugby Union
2729	OAC	On Approved Credit
2730	OAP	Old Age Pensioner (UK)
2731	OARSI	Osteoarthritis Research Society International
2732	OAS	Organization of American States
2733	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2734	OASIS	Ontario Association of Sewage Industry Services
2735	OASP	Operational Analysis Support Paper/Plan
2736	OAU	Organization for African Unity
2737	OBE	Officer of the Order of the British Empire
2738	OBX	Outer Banks (North Carolina)
2739	OC	Officer Commanding
2740	OCD	Obsessive-Compulsive Disorder
2741	OCFS	Oracle Cluster File System
2742	OCFS2	Oracle Cluster File System Release 2
2743	OCMCC	[2] Orchard County MCC
2744	OCN	Oncology Certified Nurse
2745	OCO	Oort Cloud Object
2746	OCR	Optical Character Recognition
2747	OCS	see entry
2748	ODAS	OCA-DLR Asteroid Survey
2749	ODBC	Open DataBase Connectivity
2750	OEA	(U.S.) Office of Economic Adjustment
2751	OECD	Organisation for Economic Co-operation and Development (international)
2752	OED	Oxford English Dictionary
2753	OEG	Operation Exposure Guidance
2754	OEIS	On-Line Encyclopedia of Integer Sequences
2755	OEM	Original Equipment Manufacturer
2756	OFA	Occipital Face Area
2757	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2758	OGC	Open Geospatial Consortium
2759	OGD	Other Government Department
2760	OGO	Other Government Organization
2761	OH	Ohio (postal symbol)
2762	OHC	OverHead-Cam engine
2763	OHHLA	Original Hip-Hop Lyrics Archive
2764	OHIP	Ontario Health Insurance Plan
2765	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2766	OHP	Observatoire de Haute-Provence
2767	OHSS	Ovarian Hyperstimulation Syndrome
2768	OIC	Officer In Charge
2769	OIF	Operation Iraqi Freedom
2770	OIOC	Oriental & India Office Collections (in the British Library)
2771	OJT	On-the-Job Training
2772	OKC	Oklahoma City
2773	OLED	Organic Light-Emitting Diode
2774	OLS	Operational Linescan System
2775	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2776	OME	Osaka Mercantile Exchange
2777	OMFG	Oh My Fucking God
2778	OMG	Oh My God or Or My Gosh
2779	OMGW	Oh My Gosh it's Windy
2780	OMN	Oman (ISO 3166 trigram)
2781	OMNCS	U.S. Office of the Manager for the National Communications System
2782	OMP	Order of Mapungubwe in Platinum
2783	OMS	Order of Mapungubwe in Silver
2784	OMT	Object Model Template
2785	ON	Ontario (postal symbol)
2786	ONC	Orthopaedic Nurse Certified
2787	ONG	Orthodontic National Group
2788	ONI	(U.S.) Office of Naval Intelligence
2789	ONS	Operational Needs Statement
2790	OOAD	Object Oriented Analysis and Design
2791	OOBE	Out-of-body experience
2792	OOCL	Orient Overseas Container Line
2793	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2794	OOF	Out of Facility
2795	OOMF	One Of My Followers
2796	OOO	Out Of the Office
2797	OOTW	Operations Other Than War
2798	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
2799	OPAC	Online Public Access Catalogue
2800	OPCON	Operational control
2801	OPCW	Organisation for the Prohibition of Chemical Weapons
2802	OPEC	Organization of the Petroleum Exporting Countries
2803	OPFOR	Opposing force
2804	OPINTEL	Operational Intelligence
2805	OPLAN	Operation plan (also OpPlan)
2806	OPORD	Operation order
2807	OPSEC	Operations security,Open Platform for Security
2808	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2809	OPTAR	Operational target
2810	OPV	Offshore Patrol Vessel
2811	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)
2812	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
2813	ORAU	Oak Ridge Associated Universities
2814	ORB	Object Request Broker
2815	ORBAT	Order of Battle
2816	ORD	Office of Research and Development,Operational Requirements Document
2817	ORF	Operational iness Float
2818	ORISE	Oak Ridge Institute for Science and Education
2819	ORNL	Oak Ridge National Laboratory
2820	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
2821	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2822	OS	Operating System
2823	Os	Osmium
2824	OSA	Order of St. Augustine
2825	OSCE	Organisation for Security and Cooperation in Europe
2826	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2827	OSDL	Open Source Development Labs
2828	OSE	Own Separate Entrance
2829	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2830	OSETI	Optical SETI also Optical SETI
2831	OSHA	Occupational Safety and Health Administration
2832	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2833	OSIA	(U.S.) On-Site Inspection Agency
2834	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)
2835	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2836	OSM	One Saturday Morning
2837	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2838	OSPA	Operations Security Professional's Association site of OSPA
2839	OSPA	Oregon School Psychologists Association [3]
2840	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2841	OSU	Ohio State University,Oklahoma State University
2842	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2843	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2844	OTC	Over-The-Counter (drugs)
2845	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2846	OTEA	(U.S. Army) Operational Test Evaluation Agency
2847	OTI	Office of Transition Initiatives (United States Agency for International Development)
2848	OTOH	On The Other Hand
2849	OTS	Off the scale,sexually untouchable except for a lot of money
2850	OTSBH	Over The Shoulder Boulder Holder
2851	OTW	On The Way
2852	OTYBL	Over To You Blue Leader
2853	OTYRL	Over To You Red Leader
2854	OU	University of Oklahoma
2855	OW	Old Wykehamist
2856	OWN	Oprah Winfrey Network
2857	OX	IATA code for Orient Thai Airlines
2858	OXC	Optical cross-connect
2859	OXM	Official Xbox Magazine
2860	OXT	Oxytocin
2861	OZ	(?) Australia
2862	p	pico
2863	P2P	Peer-to-peer (networking)
2864	pA	picoampere
2865	PAA	Position Area for Artillery
2866	PABX	Private Automated Branch eXchange (company phone system)
2867	PACOM	(U.S.) Pacific Command
2868	PADI	Professional Association of Diving Instructors
2869	PAEK	PolyArylEtherKetone
2870	PAFC	Plymouth Argyle Football Club
2871	PAH	Polycyclic aromatic hydrocarbon
2872	PAHO	Pan American Health Organization
2873	PAK	Pakistan (ISO 3166 trigram)
2874	PAM	Precision Attack Missile
2875	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2876	PARC	Palo Alto Research Center
2877	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2878	PARP	(NATO Partnership for Peace) Planning And Review Process
2879	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2880	PAS	See entry
2881	PASR	Personnel Accounting and Strength Reporting
2882	PATH	Port Authority Trans-Hudson
2883	PAYD	Pay As You Drive
2884	PAYE	Pay As You Earn
2885	Pb	Lead (Latin Plumbum)
2886	PB	PolyButylene
2887	PBB	PolyBrominated Biphenyl
2888	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2889	PBD	PolyButaDiene
2890	PBDE	PolyBrominated Diphenyl Ether
2891	PBI	PolyBenzImidazole
2892	PBN	PolyButylene Naphthalate
2893	PBOH	Please Become Old History
2894	PBT	PolyButylene Terephthalate
2895	PBX	Private Branch eXchange (company phone system)
2896	pC	picocoulomb
2897	PCAS	Planet-Crossing Asteroid Survey
2898	PCB	see entry
2899	PCCB	Porsche Ceramic Composite Brake
2900	PCCIP	President's Commission on Critical Infrastructure Protection
2901	PCE	PerChlorEthylene
2902	PCIe	Peripheral Component Interconnect Express (computer bus)
2903	PCL	Passive Coherent Location
2904	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2905	PCN	Pitcairn Islands (ISO 3166 trigram)
2906	PCPI	Physician Consortium for Performance Improvement (AMA)
2907	PCR	Polymerase chain reaction
2908	PCSSD	Pulaski County Special School District
2909	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2910	Pd	Palladium
2911	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2912	PDL	Pure Dumb Luck (Texan punk band)
2913	PDN	Pull-Down Network
2914	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2915	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2916	PE	Professional Engineer
2917	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2918	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2919	PEEK	PolyEtherEtherKetone
2920	PEET	Partnerships for Enhancing Expertise in Taxonomy
2921	PEK	PolyEtherKetone
2922	PEPFAR	President's Emergency Plan For AIDS Relief
2923	PER	Peru (ISO 3166 trigram)
2924	perl	usually lower case Practical Extraction and Report Language
2925	PES	PolyEtherSulfone
2926	PEST	UK Public Engagement with Science and Technology
2927	PETE	PolyEthyleneTErephthalate
2928	PETP	PolyEthyleneTerePhthalate
2929	pF	picofarad
2930	PFD	Permanent Fund Dividend = personal flotation device
2931	PFE	Permanent Forest Estate
2932	PfP	Partnership for Peace
2933	Pg	petagram
2934	pg	picogram
2935	PGCE	Postgraduate Certificate in Education
2936	PGD	Pre-implantation Genetic Diagnosis
2937	PGENI	Pharmaco-Genetics for Every Nation Initiative
2938	PGH	Pre-implantation Genetic Haplotyping
2939	PGM	Precision-Guided Munition
2940	PGP	Pretty Good Privacy
2941	PHL	Philippines (ISO 3166 trigram)
2942	PHQ	Patient Health Questionnaire
2943	Pi	Pebi
2944	PIB	PolyIsoButylene
2945	PIC	Person In Charge
2946	PICNIC	Problem In Chair Not In Computer
2947	PICS	Private Investment Capital Subscription
2948	PIF	Partners in Flight
2949	PIG	Pipeline Inspection Gauge
2950	PIN	Personal Identification Number
2951	PINF	People In Need Foundation (Czech charitable organisation)
2952	PIPA	Program on International Policy Attitudes
2953	PIR	Priority Intelligence Requirement
2954	PIRA	Provisional Irish Republican Army
2955	PIREPS	Pilot Reports
2956	PITA	Pain In The Ass
2957	PJ	petajoule
2958	pJ	picojoule
2959	PJHQ	Permanent Joint Headquarters
2960	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2961	PKI	Public Key Infrastructure (cryptography)
2962	PKU	Phenylketonuria
2963	pL	picolitre
2964	PLAID	Precision Location and Identification
2965	PLB	Personal Locator Beacon
2966	PLC	Public Limited Company (British)
2967	PLCC	Plastic Leaded Chip Carrier (electronics)
2968	PLD	Probable Line of Deployment
2969	PLEBS	People Lacking Everyday Basic Skills
2970	PLF	Parachute Landing Fall
2971	PLIF	Planar Laser-Induced Fluorescence
2972	PLL	Phase-Locked Loop (electronics)
2973	PLM	Polarized Light Microscope/Microscopy
2974	PLMBA	Phospholipid Bilayer Microarray
2975	Pln	Platoon
2976	PLO	Palestine Liberation Organization
2977	PLOKTA	Press Lots Of Keys To Abort
2978	PLP	Platonic Life Partner
2979	PLUTO	Pipe Line Under The Ocean
2980	PLW	Palau (ISO 3166 trigram)
2981	pm	picometre
2982	PMC	Primary Motor Cortex
2983	PMI	Positive Material Identification
2984	PMID	PubMed Identifier
2985	PMMA	PolyMethylMethAcrylate
2986	PMS	Premenstrual Syndrome
2987	PMSL	Piss Myself Laughing (Internet shorthand)
2988	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
2989	pN	piconewton
2990	PNAC	Project for the New American Century
2991	PNVS	Pilot Night Vision Sensor
2992	Po	Polonium
2993	PO	Post Office
2994	PO	Purchase Order
2995	POCD	Post-Operative Cognitive Dysfunction
2996	pod	Plain Old Documentation
2997	POFF	Plain Old Flat File
2998	POGO	Project On Government Oversight
2999	POI	Program Of Instruction
3000	POK	Plane Of Knowledge
3001	POLAD	Political Advice
3002	POMDP	Partially observable Markov decision process
3003	PooS	Poo Sniffer (Internet shorthand)
3004	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
3005	POSH	Port Outbound Starboard Home (alleged)
3006	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
3007	POT	Plane Of Tranquility
3008	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3009	POTUS	President of the United States
3010	POV	Point of view
3011	POW	Prisoner of war
3012	PPASC	(U.S.) Plans and Program Analysis Support Center
3013	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3014	PPLI	Precise Participant Location & Identification
3015	PPM	Project Planning and Management
3016	PPO	PolyPhenylene Oxide
3017	PPQN	Pulses Per Quarter Note (ditto)
3018	PPQT	Pre-Production Qualification Test
3019	PPV	Pay-per-view
3020	Pr	Pastor, Priest
3021	PR	Public Relations
3022	Prb	Presbyter
3023	PRBO	Point Reyes Bird Observatory
3024	PRC	People's Republic of China
3025	PRD	CERDEC Product Realization Directorate
3026	PRFG	Partial Fog (METAR Code)
3027	PRI	Puerto Rico (ISO 3166 trigram)
3028	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3029	PRM	Personnel iness Management
3030	PRY	Paraguay (ISO 3166 trigram)
3031	Ps	petasecond
3032	pS	picosiemens
3033	PSG	Pacific Seabird Group
3034	PSI	Portable Source Initiative
3035	PSI	Pounds per square inch
3036	PSS	Personnel System Support
3037	PST	Pacific Standard Time (UTC-8 hours)
3038	PSU	Pennsylvania State University
3039	PsyOp	Psychological Operations
3040	pT	picotesla
3041	Pt	Platinum
3042	PTA	Parent-Teacher Association
3043	PTAL	Public Transport Accessibility Level
3044	PTES	People's Trust for Endangered Species
3045	PTFE	PolyTetraFluoroEthylene
3046	PTI	Pardon the Interruption
3047	PTSD	Post-Traumatic Stress Disorder
3048	Pu	Plutonium
3049	Pub	Publication
3050	PUG	PET Users Group
3051	PUN	Pull-Up Network
3052	PUP	Pull-Up Point
3053	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3054	PV	petavolt
3055	pV	picovolt
3056	PvE	Player versus Environment
3057	PvP	Player versus Player
3058	PVR	Personal Video Recorder
3059	PvZ	Plants vs. Zombies
3060	PW	Palau (postal symbol; ISO 3166 digram)
3061	pW	picowatt
3062	PWA	Pirates With Attitude
3063	PWBA	Pension and Welfare Benefits Administration
3064	PWC	PieceWise Constant (describing a mathematical function)
3065	PwC	PricewaterhouseCoopers (international accounting firm)
3066	PWL	PieceWise Linear (describing a mathematical function)
3067	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3068	PWR	Pressurized Water Reactor
3069	PX	Post eXchange
3070	PYF	French Polynesia (ISO 3166 trigram)
3071	PYMWYMI	Put Your Money Where Your Mouth Is
3072	Q1	First Quarter
3073	Q2	Second Quarter
3074	Q3	Third Quarter
3075	Q4	Fourth Quarter
3076	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
3077	Qantas	Queensland And Northern Territory Aerial Services
3078	QAT	Qatar (ISO 3166 trigram)
3079	QB	Quarterback (football)
3080	QCD	Quantum ChromoDynamics
3081	QDR	Quadrennial Defense Review
3082	QEH	Queen Elizabeth's Hospital
3083	QK	Air Canada Jazz (IATA airline designator)
3084	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3085	QPS	Quark Publishing System
3086	QSCAT	Quick Scatterometer satellite
3087	QSL	Québec Sign Language
3088	QSO	Quasi-Stellar Object
3089	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3090	Quasar	Quasi-stellar radio source
3091	QUB	Queen's University Belfast
3092	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3093	QZ	Awair (IATA airline designator)
3094	R2I	Resistance to Interrogation
3095	RA	Radio Australia
3096	Ra	Radium
3097	RAAF	Royal Australian Air Force
3098	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3099	RACK	Risk Aware Consensual Kink (SM phrase)
3100	Racon	RAdar beaCON
3101	RADA	Royal Academy of Dramatic Art
3102	Radar	Radio Detection And Ranging
3103	RadB	Rad51/Dmc1 homologous protein
3104	RADb	Routing Assets Data Base
3105	RADC	Region Air Defence Commander
3106	RAE	UK Royal Aircraft Establishment (-1991)
3107	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3108	RAM	Royal Air Maroc
3109	Ramark	RAdar MARKer
3110	RAOC	Rear Area Operation Centre
3111	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3112	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3113	RATELO	Radiotelephone Operator
3114	Rb	Rubidium
3115	RB	Running Back (football)
3116	RBI	Runs Batted In
3117	RC	see entry
3118	RCAF	Royal Canadian Air Force
3119	RCC	Rescue Co-ordination Centre
3120	RCCO	Royal Canadian College of Organists
3121	RCHA	Royal Canadian Horse Artillery (regiment)
3122	RCMP	Royal Canadian Mounted Police
3123	RD	Radio Disney
3124	RDD	Radiological Dispersion Device
3125	RDM	Remotely Delivered/Deliverable Mine
3126	RDT	Remote Digital Terminal
3127	RDV	Remote Detection Vehicle
3128	Re	Rhenium
3129	RE	Royal Engineers
3130	REACT	Remote Electronically Activated Control Technology
3131	REAM	Retired Educators Association of Minnesota
3132	RECCE	Reconnaissance
3133	REEF	Reef Environmental Education Foundation
3134	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3135	REME	Royal Electrical and Mechanical Engineers
3136	RERC	Rehabilitation Engineering Research Center
3137	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3138	REU	Réunion (ISO 3166 trigram)
3139	Rf	Rutherfordium
3140	RFD	Request for Documentation
3141	RFE	Request for Evaluation
3142	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3143	RFF	Right of First Refusal (legal term)
3144	RFID	Radio Frequency IDentification
3145	RFL	Rugby Football League
3146	RFP	Request for Proposal
3147	RFQ	Request for Quotation
3148	RFT	Request for Tender
3149	RFU	Rugby Football Union
3150	RG	Republican Guard
3151	Rg	Roentgenium
3152	RGB	Red Green Blue (colour model)
3153	RGBI	Red Green Blue Intensity (ditto)
3154	Rh	Rhodium
3155	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3156	RHIC	Relativistic Heavy Ion Collider
3157	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3158	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3159	RHU	Replacement Holding Unit
3160	RI	Rhode Island (postal symbol)
3161	RIAA	Recording Industry Association of America
3162	RIBA	Royal Institute of British Architects
3163	RIFA	Red imported fire ant
3164	RILA	Retail Industry Leaders Association
3165	RIMVS	Retinal Imaging Machine Vision System
3166	RINO	Republican In Name Only[1]
3167	RISC	Reduced Instruction Set Computer
3168	RJD	Reduced Julian Day
3169	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3170	RKO	Radio-Keith-Orpheum Pictures
3171	RLP	Recognised [Operating/Operational] Land Picture
3172	RLS	Restless Leg Syndrome
3173	RLY	Rally Point
3174	RM	see separate disambiguation page
3175	RMC	Robert Menzies College
3176	RMDA	Records Management and Declassification Agency
3177	RMP	Recognised [Operating/Operational] Maritime Picture
3178	RN	Radio Netherlands
3179	Rn	Radon
3180	RNA	RiboNucleic Acid
3181	RNAD	Royal Naval Armaments Depot (UK)
3182	RNPS	Radio Network Planning System
3183	RNZ	Radio New Zealand
3184	RNZI	Radio New Zealand International
3185	ROA	Rate Of Ascent
3186	ROE	Rules Of Engagement
3187	ROFLOL	Rolling On the Floor Laughing Out Loud
3188	ROH	Ring of Honor
3189	ROK	Republic of Korea
3190	ROP	Render Output Pipeline
3191	ROPE	Research Opportunity and Performance Evidence
3192	ROS	Reactive Oxygen Species
3193	ROU	Romania (ISO 3166 trigram)
3194	ROV	Remotely Operated Vehicle
3195	ROZ	Restricted Operations Zone
3196	RPA	Regional Plan Association
3197	RPD	Recognition-Primed Decision-making
3198	RPF	Rwandan Patriotic Front
3199	RPL	Reverse Polish Lisp
3200	rpm	revolutions per minute
3201	RPN	reverse Polish notation
3202	rps	revolutions per second
3203	RPV	Remotely Piloted Vehicle
3204	RQ	Puerto Rico (FIPS 10-4 territory code)
3205	RRB	Railroad Retirement Board
3206	RRN	Recurrence Rate Number
3207	RRP	Recurrent Respiratory Papillomatosis
3208	RRS	Racing Rules of Sailing
3209	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3210	RS	Russia (FIPS 10-4 country code)
3211	RSI	Repetitive Strain Injury
3212	RSJ	Rolled Steel Joist (construction)
3213	RSN	Real Soon Now (coined by author Jerry Pournelle)
3214	RSPB	(UK) Royal Society for the Protection of Birds
3215	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3216	RSR	Required Supply Rate
3217	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3218	RSRI	Red Sands Research Institute
3219	RSS	Really Simple Syndication
3220	RTA	Road traffic accident (British)
3221	RTBF	Radio-Télévision belge de la Communauté française
3222	RTF	Rich Text Format
3223	RTFM	the Fucking/Fine Manual
3224	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3225	RTI	Run-Time Infrastructure (Simulation)
3226	RTL	see entry
3227	RTP	Real-time Transport Protocol
3228	RTS	see entry
3229	RTT	Round Trip Timing
3230	RU	Russia (ISO 3166 digram)
3231	Ru	Ruthenium
3232	RUC	Royal Ulster Constabulary
3233	RUS	Russia (ISO 3166 trigram)
3234	RUSI	Royal United Services Institute for Defence Studies
3235	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3236	RWA	Rwanda (ISO 3166 trigram)
3237	RWH	Rain Water Harvesting
3238	RWR	Radar Warning Receiver
3239	RWS	Remote Weapon Station
3240	RX	Receive
3241	SBNO	Standing but not operating (in reference to amusement parks)
3242	SCOTUS	Supreme Court of the United States
3243	SCROTUS	So-called Ruler of the United States
3244	SDHC	Secure Digital High Capacity
3245	SDXC	Secure Digital eXtended Capacity
3246	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3247	SGOTUS	Second Gentleman of the United States
3248	SHO	Showtime (see also sho.com)
3249	SIRI	Service Interface for Real Time Information
3250	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3251	SLOTUS	Second Lady of the United States (the vice president's wife)
3252	SoCon	Southern Conference (U.S. college sports)
3253	STB	Surface Transportation Board[2]
3254	SWAC	Southwestern Athletic Conference
3255	SWAN	System for Wearable Audio Navigation
3256	SWAT	Special Weapons And Tactics
3257	SWF	Single White Female
3258	Ta	Tantalum
3259	TAACOM	U.S. Theater Army Area Command
3260	TAADCOORD	Theatre Army Air Defence Co-ordinator
3261	TAAR	Trace Amine-Associated Receptor
3262	TAC	U.S. Tactical Air Command (1946-1992)
3263	TACAN	Tactical Air Navigation
3264	TACCO	Tactical Coordinator
3265	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3266	TACDAR	Tactical Detection And Reporting
3267	TACSOP	Tactical SOP (Standing Operating Procedure)
3268	TADIL	Tactical Digital Information Link
3269	TAI	Target[ed] Area of Interest
3270	TAJ	Tom and Jerry
3271	TAJT	Tom and Jerry Tales
3272	TALES	Technical Advice and Lexicon for Enabling Simulation
3273	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3274	TANP	Terrain-Aware Network Planner
3275	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)
3276	TAPPS	Texas Association of Private and Parochial Schools
3277	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3278	TAS	Tasmania (postal symbol)
3279	TASER	Thomas A. Swift's Electric Rifle
3280	TASM	Tactical Air-to-Surface Missile
3281	TAT	Tourism Authority of Thailand
3282	TATP	TriAcetone TriPeroxide
3283	TATT	Tired All The Time (medical diagnosis in-joke)
3284	Tb	Terbium
3285	TB	Tuberculosis
3286	TBA	to be announced
3287	TBBPA	TetraBromoBisPhenol-A
3288	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3289	TBF	to be fair
3290	TBH	To Be Honest
3291	TBL	Turkish Basketball League
3292	TBS	Turner Broadcasting System
3293	TBT	Tributyltin
3294	Tc	Technetium
3295	TCAA	Top Counter-Assault Agents
3296	TCAS	Traffic Collision Avoidance System
3297	TCCCS	Tactical Command,Control and Communication System
3298	TCD	Chad (ISO 3166 trigram)
3299	TCHD	Truck Cargo Heavy Duty
3300	TCL	Tool Command Language
3301	TCM	Turner Classic Movies
3302	TCU	Texas Christian University
3303	TCW	Tasty Coma Wife
3304	TCWMS	Tele-Center Workforce Management System
3305	TDA	The Disney Afternoon
3306	TDL	Tactical Data Link
3307	TDM	Time-Division Multiplexing
3308	TDMA	Time Division Multiple Access
3309	TDP	Technology Demonstration Programme
3310	TDRS	Tracking Data and Relay Satellite
3311	Te	Tellurium
3312	TEAL	Tasman Empire Airways Limited
3313	Team	Together everyone achieves more
3314	TEAMS	The East African Marine System (fiber optic cable)
3315	TED	Technology Entertainment Design prize
3316	TENCAP	Tactical Exploitation of National Capabilities
3317	TERS	Tactical Event Reporting System
3318	TES	Tactical Event System
3319	TEST	Thesaurus of Engineering and Scientific Terms
3320	TEU	Twenty-foot equivalent unit (cargo capacity)
3321	TeVeS	Tensor Vector Scalar theory
3322	TFMPP	Trifluorophenylmethylpiperazine
3323	TFR	Total Fertility Rate
3324	TFT	Thin-Film Transistor
3325	Tg	Teragram
3326	TG	Togo (ISO 3166 digram)
3327	TGO	Togo (ISO 3166 trigram)
3328	Th	Thorium
3329	THA	Thailand (ISO 3166 trigram)
3330	THAAD	Terminal High Altitude Area Defence
3331	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3332	THEL	Tactical High Energy Laser ACTD
3333	THG	Tetrahydrogestrinone
3334	TIA	Total Information Awareness initiative
3335	TIA	Transient Ischemic Attack
3336	TIALD	Thermal Imaging and Airborne Laser Designation
3337	TIBS	Tactical Information Broadcast System
3338	TIC	Troops In Contact
3339	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3340	TINC	There Is No Cabal
3341	TIP	Thermal Identification Panel
3342	tits	Toes in the Sand
3343	TJD	Truncated Julian Day
3344	TJK	Tajikistan (ISO 3166 trigram)
3345	TKL	Tokelau (ISO 3166 trigram)
3346	TKM	Turkmenistan (ISO 3166 trigram)
3347	Tl	Thallium
3348	TLA	Three-Letter Abbreviation/Acronym
3349	TLAM	Tomahawk Land Attack Missile
3350	TLATOJL	The Life and Times of Juniper Lee
3351	TLPM	T1 Line Performance Monitor
3352	Tm	Terametre
3353	TMAP	Texas Medication Algorithm Project
3354	TMC	The Movie Channel
3355	TMD	Theatre Missile Defence
3356	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3357	TMI	Too Much Information
3358	TMJ	TemporoMandibular Joint (syndrome)
3359	TMNT	Teenage Mutant Ninja Turtles
3360	TMPG	Transparent Multi-Platform Gateway
3361	TMR	Twin Main Rotors (helicopter type)
3362	TMS	Transcranial Magnetic Stimulation
3363	TMT	Thirty Meter Telescope
3364	TMTOWTDI	There's Than One Way To Do It (from Perl)
3365	TNA	Total Nonstop Action Wrestling
3366	TNO	Trans-Neptunian Object
3367	TOBS	Time of OBServation
3368	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3369	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3370	TOGS	Thermal Observation Gunnery Sight
3371	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3372	TON	Tonga (ISO 3166 trigram)
3373	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
3374	TOT	Time On Target
3375	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3376	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3377	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3378	TPI	The point is
3379	TPO	Thrombopoietin
3380	TPS	The Pennington School
3381	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3382	TQ	Top Qualifier (similar to Pole Position in car racing)
3383	TRA	Technology iness Assessment
3384	TRAC	(U.S. Army) TRADOC Analysis Center
3385	TRACON	Terminal Radar Approach Control
3386	TRADOC	(U.S. Army) Training and Doctrine Command
3387	TRANSCOM	U.S. Transportation Command
3388	TRAP	Tactical Receive equipment and related Applications
3389	TRASANA	TRADOC Systems Analysis Agency
3390	TRD	Towed Radar Decoy
3391	TRIGAT	Third Generation Antitank (missile)
3392	TRL	Technology readiness level
3393	Trp	Troop
3394	TRU	Transuranic
3395	TRUEX	Training in Urban Environment Exercise
3396	TRW	Thompson Ramo Wooldridge Inc.
3397	Ts	Terasecond
3398	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3399	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3400	TSEC	Transmission Security Encryption Code
3401	TSL	Transportation Security Laboratory
3402	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3403	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3404	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3405	TSR	Terminate and Stay Resident
3406	TSSIA	The Subject Says It All
3407	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3408	TTCT	Torrance Tests of Creative Thinking
3409	TTFN	Ta Ta For Now
3410	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3411	TTO	Trinidad and Tobago (ISO 3166 trigram)
3412	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3413	TTTEAF	Thomas the Tank Engine and Friends
3414	TTY	TeleTYpewriter (Printer)
3415	TTYL	To You Later (Internet slang)
3416	TTZ	Tetrazolium
3417	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3418	TUC	Trades Union Congress
3419	TUG	TeX Users Group
3420	TUI	Text-based user interface (cf. CLI),among other uses
3421	TUN	Tunisia (ISO 3166 trigram)
3422	TUNS	Technical University of Nova Scotia
3423	TUR	Turkey (ISO 3166 trigram)
3424	TUSK	Tank Urban Survival Kit
3425	TUV	Tuvalu (ISO 3166 trigram)
3426	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3427	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3428	TVA	Tennessee Valley Authority
3429	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3430	TVR	TreVor (Wilkinson) Racing
3431	TVS	Tornado vortex signature
3432	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3433	TWAIN	Technology Without An Interesting Name
3434	TWE	Trans World Entertainment
3435	TWI	The Welding Institute
3436	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
3437	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3438	TWP	Technical Working Paper
3439	TWS	Thermal Weapon Sight,Track While Scan
3440	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3441	TXV	Thermostatic Expansion Valve
3442	TYT	Take Your Time,Internet chat abbreviation
3443	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3444	TZA	Tanzania (ISO 3166 trigram)
3445	TZC	Tetrazolium chloride
3446	U	Uranium
3447	UA	Ukraine (ISO 3166 digram) Unit of Action
3448	UAAP	University Athletic Association of the Philippines
3449	UAB	University of Alabama at Birmingham
3450	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3451	UBC	United Baptist Church,University of British Columbia
3452	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3453	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3454	UCBSA	United Cricket Board of South Africa
3455	UCF	University of Central Florida
3456	UCLA	University of California at Los Angeles
3457	UCLES	University of Cambridge Local Examinations Syndicate
3458	UCR	University of California at Riverside
3459	UCR	University of Costa Rica
3460	UCS	Union of Concerned Scientists
3461	UCSB	University of California at Santa Barbara
3462	UCSD	University of California at San Diego
3463	UDAS	Uppsala-DLR Asteroid Survey
3464	UDDI	Universal Description,Discovery and Integration
3465	UDTS	Uppsala-DLR Trojan Survey
3466	UE	Unit of Employment
3467	UEFA	Union of European Football Associations
3468	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3469	UFC	Ultimate Fighting Championship
3470	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3471	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3472	UGA	Uganda (ISO 3166 trigram)
3473	UGV	Unmanned Ground Vehicle
3474	UHF	Ultra High Frequency
3475	UHMW	Ultra-High Molecular Weight
3476	UHRB	Ultra-High Resolution Building (simulation)
3477	UIC	University of Illinois at Chicago
3478	UID	User ID
3479	UIUC	University of Illinois at Urbana-Champaign
3480	UJTL	Universal Joint Task List
3481	UKIP	United Kingdom Independence Party
3482	UKR	Ukraine (ISO 3166 trigram)
3483	UL	Underwriters Laboratories
3484	ULF	Ultra Low Frequency
3485	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3486	UMCP	Unit Maintenance Collection Point
3487	UMES	University of Maryland Eastern Shore
3488	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3489	UMIST	University of Manchester Institute of Science and Technology
3490	UMTS	Universal Mobile Telecommunications System
3491	UN	United Nations
3492	UNABOM	University and airline bomber (FBI case name)
3493	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3494	UNAMSIL	United Nations Mission in Sierra Leone
3495	UNCF	United Negro College Fund
3496	UNCLOS	United Nations Convention on the Law of the Sea
3497	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3498	UNCTAD	United Nations Conference on Trade and Development
3499	UNDCP	United Nations Drug Control Programme
3500	UNDE	(i/a) Union of National Defence Employees (Canada)
3501	UNDP	United Nations Development Programme
3502	UNEP	United Nations Environment Programme
3503	UNFCCC	United Nations Framework Convention on Climate Change
3504	UNFICYP	United Nations Peacekeeping Force in Cyprus
3505	UNGEGN	United Nations Group of Experts on Geographical Names
3506	UNHCR	United Nations High Commission (er) for Refugees
3507	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3508	UNICRI	United Nations Interregional Crime and Justice Research Institute
3509	UNIDO	United Nations Industrial Development Organization
3510	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3511	UNMIK	United Nations Interim Administration Mission in Kosovo
3512	UNOSOM	United Nations Operations in Somalia
3513	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3514	UNRISD	United Nations Research Institute for Social Development
3515	UNSM	Union of Nova Scotian Municipalities
3516	UNTAC	United Nations Transitional Authority in Cambodia
3517	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3518	UNU	United Nations University
3519	UPdM	Università Popolare della Multimedialità
3520	UPI	United Press International
3521	UPN	United Paramount Network
3522	UPU	Universal Postal Union
3523	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3524	URD	User Requirements Document
3525	URY	Uruguay (ISO 3166 trigram)
3526	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3527	USAF	United States Air Force
3528	USAFSPC	U.S. Air Force Space Command
3529	USAID	United States Agency for International Development
3530	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3531	USAREUR	United States Army Europe
3532	USB	Universal Serial Bus
3533	USCG	United States Coast Guard
3534	USDA	United States Department of Agriculture
3535	USDI	United States Department of the Interior
3536	USDOE	United States Department of Energy
3537	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3538	USEC	United States Enrichment Corporation
3539	USFL	United States Football League
3540	USFWS	United States Fish and Wildlife Service
3541	USGS	United States Geological Survey
3542	USIA	United States Information Agency
3543	USJFCOM	United States Joint Forces Command
3544	USMC	United States Marine Corps
3545	USMNT	United States men's national (soccer) team
3546	USN	United States Navy
3547	USNB	United States Naval Base
3548	USNG	United States National Grid
3549	USNH	United States Naval Hospital
3550	USNI	United States Naval Institute
3551	USNO	U.S. Naval Observatory
3552	USNOFS	United States Naval Observatory Flagstaff Station
3553	USNP	United States Newspaper Program
3554	USNR	United States Navy Reserve
3555	USNS	United States Naval Ship
3556	USNZ	University Sport New Zealand
3557	USPS	United States Postal Service
3558	USPTO	United States Patent and Trademark Office
3559	USS	United States ship (sometimes meaningless; see Star Trek)
3560	USSPACECOM	United States Space Command
3561	USSR	Union of Soviet Socialist Republics
3562	UST	Underground Storage Tank
3563	USTRANSCOM	United States Transportation Command
3564	USWNT	United States women's national (soccer) team
3565	UT	Universal Time
3566	UTEP	University of Texas at El Paso (pronounced you-tep)
3567	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3568	UUA	Unitarian Universalist Association
3569	UUID	Universally Unique Identifier (see also GUID)
3570	UUV	Unmanned Underwater Vehicle
3571	UW	University of Washington
3572	UWO	University of Western Ontario
3573	UWT	Under Water Telephone
3574	UWTG	Under Water Tug
3575	UWW	United World Wrestling
3576	UXO	Unexploded Ordnance
3577	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3578	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3579	UZB	Uzbekistan (ISO 3166 trigram)
3580	VACIS	Vehicle And Container Inspection System
3581	VACIS	Victorian Ambulance Clinical Information System
3582	VANOS	Variable Nockenwelle System
3583	VAO	Vienna Art Orchestra
3584	VBA	Visual Basic for Applications
3585	vCJD	Variant Creutzfeldt-Jakob Disease
3586	VCNO	(U.S.) Vice Chief of Naval Operations
3587	VCofS	Vice Chief of Staff
3588	VCR	Video cassette recorder
3589	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3590	VDFS	VisualSVN Distributed File System (VDFS)
3591	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3592	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3593	VEN	Venezuela (ISO 3166 trigram)
3594	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3595	VfD	s for deletion (used in Wikipedia)
3596	VFM	Value For Money
3597	VFMO	Very Fast Moving Object (astronomy)
3598	VFT	Virtual Function Table
3599	VFW	Veterans of Foreign Wars
3600	VG	British Virgin Islands (ISO 3166 digram)
3601	VGB	British Virgin Islands (ISO 3166 trigram)
3602	VH1	Video Hits One
3603	VHF	Very High Frequency
3604	VIA	Versatile Interface Adapter
3605	VIDS	Visual Information Display System
3606	VII	7 (in Roman numerals)
3607	VIII	8 (in Roman numerals)
3608	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3609	VIP	Very Important Person
3610	VISCII	VIetnamese Standard Code for Information Interchange
3611	VIT	Vellore Institute of Technology
3612	VIVO	Video In Video Out
3613	VJ	Video Jockey
3614	VLAD	Vertical Line Array DIFAR
3615	VLBA	Very Long Baseline Array
3616	VLF	Very Low Frequency
3617	VLIW	Very Long Instruction Word
3618	VLPFC	VentroLateral PreFrontal Cortex
3619	VLPMC	VentroLateral PreMotor Cortex
3620	VLSI	Very-large-scale integration
3621	VM	Vietnam (FIPS 10-4 country code)
3622	VMF	Marine Fighting Squadron of the United States Marine Corps
3623	VMF	Variable Message Format
3624	VMN	VentroMedial Nucleus (neurophysiology)
3625	VN	Vietnam (ISO 3166 digram)
3626	VNIR	Visible and Near InfraRed
3627	VNM	Vietnam (ISO 3166 trigram)
3628	VNS	see entry
3629	VOA	Voice of America
3630	VOIP	Voice Over Internet Protocol
3631	VOLT	Visual OpenType Layout Tool
3632	VON	Victorian Order of Nurses
3633	VOR	Voice of Russia
3634	VOX	Voice Operated oscillator
3635	VPOTUS	Vice President of the United States
3636	VPN	Virtual Private Network
3637	VR	Virtual Reality
3638	VRSG	Virtual Reality Scene Generator
3639	VSHORAD	Very Short Range Air Defence
3640	VSO	Voluntary Services Overseas
3641	VSR	Very Special Relativity
3642	VTC	Video Tele-Conference
3643	VTEC	Variable valve Timing and Electronic lift Control
3644	VTOL	Vertical Take-Off & Landing
3645	VUB	Vrije Universiteit Brussel (Belgian university)
3646	VUT	Vanuatu (ISO 3166 trigram)
3647	VVAF	Vietnam Veterans of America Foundation
3648	VW	Volkswagen
3649	VZ	Verizon Communications (NYSE code)
3650	W3C	World Wide Web Consortium
3651	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3652	WAAF	Women's Auxiliary Air Force (World War II UK)
3653	WACC	Weighted Average Cost of Capital (accounting)
3654	WACS	What-A-Cartoon! Show
3655	WAD	Weapons Alert Designator
3656	WAGGGS	World Association of Girl Guides and Girl Scouts
3657	WAL	see entry
3658	WAN	Wide area network
3659	WAP	Wireless Application Protocol
3660	WAPIMA	What a pain in my ass
3661	WAR	With All Respect
3662	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3663	WAYP	White And Yellow Pages
3664	Wb	Weber
3665	WBC	World Boxing Council
3666	WBE	Work Breakdown Element
3667	WBO	World Boxing Organization
3668	WCBO	World Chess Boxing Organisation
3669	WCBP	World Center for Birds of Prey
3670	WCL	World Confederation of Labour
3671	WCW	World Championship Wrestling
3672	WDIN	Wildlife Disease Information Node
3673	WDWR	Walt Disney World Resort
3674	WEBS	Weapon Effectiveness Battle Simulation
3675	WEC	World Extreme Cagefighting
3676	WEEE	Waste Electrical and Electronic Equipment
3677	WEF	World Economic Forum
3678	WEM	West Edmonton Mall
3679	WEU	Western European Union
3680	WEZ	Weapon Engagement Zone
3681	WF	Wallis and Futuna Islands (ISO 3166 digram)
3682	WFC	Women's Forage Corps (World War II UK)
3683	WFD	Weapon of Focused Destruction
3684	WFF	Wallops Flight Facility
3685	WFI	Water for Injection
3686	WFH	Working from home
3687	WFP	World Food Program
3688	WFZ	Weapons Free Zone
3689	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3690	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3691	WHI	Women's Health Initiative
3692	WHIP	Walks plus hits per inning pitched
3693	WHO	World Health Organisation
3694	WHS	(U.S.) Washington Headquarters Services
3695	WIIFM	What's in it for me?
3696	WIP	Work In Progress
3697	WIPO	World Intellectual Property Organization
3698	WIPP	[Nuclear] Waste Isolation Pilot Plant
3699	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3700	WKYP	Will Keep You Posted
3701	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3702	WLB	Women's Land Brigade (World War II Canada)
3703	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3704	WLOG	Without Loss Of Generality (see WOLOG)
3705	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3706	WMANUS	West Midlands Area National Union of Students
3707	WMD	World Movement for Democracy
3708	WMI	Wildlife Management Institute
3709	WMO	World Meteorological Organization
3710	WNA	World Nuclear Association
3711	WNF	Will Not Fix
3712	WNIT	Women's National Invitation Tournament
3713	WNW	West North-West
3714	WO	Warrant Officer
3715	WOF	Width of Fabric
3716	WOFT	Waste Of Fucking Time
3717	WOFTAM	Waste Of Fucking Time And Money
3718	WOI	Wheels Of Italy
3719	WOM	Write Only Memory
3720	WOS	Wilson Ornithological Society
3721	WOT	Waste Of Time
3722	WP	White Phosphorus (ammunition)
3723	WPB	War Production Board during World War II
3724	WPE	World Pork Expo
3725	WPK	Wider Peacekeeping
3726	WR	Wide Receiver (football)
3727	WRAC	Women's Royal Army Corps (World War II UK)
3728	WRAIR	Walter Reed Army Institute of Research
3729	WRBWWRM	We Best What We Most
3730	WRC	World Rally Championship
3731	WRC	World Religions Conference
3732	WRNG	Warning
3733	WRS	Worldwide Reference System
3734	WRT	NHS Workforce Review Team
3735	WRT	The Linksys routers whose model name start with 'WRT'
3736	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3737	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3738	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3739	WRT	Wireless Ronin Technologies (digital signage)
3740	WRT	World Rally Team
3741	WRT	Writer Response Theory
3742	WSC	Weapon System Catalogue
3743	WSDL	Web Services Description Language
3744	WSJ	(The) Wall Street Journal
3745	WSROC	Western Sydney Regional Organisation of Councils
3746	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3747	WSTC	Women Signallers Territorial Corps (World War II UK)
3748	WSW	West South-West
3749	WTC	World Trade Center
3750	WTF	What the fuck?; also What a Terrible Failure (android)
3751	WTFH	What The Fucking Hell
3752	WTH	What the Hell
3753	WTO	World Trade Organization
3754	WUBU2	What you been up to
3755	WV	West Virginia (postal symbol)
3756	WVA	World Veterinary Association
3757	WVIAC	West Virginia Intercollegiate Athletic Conference
3758	WVR	Women's Volunteer Reserve (World War II UK)
3759	WVSC	Women's Volunteer Service Corps (World War II Canada)
3760	WVU	West Virginia University
3761	WW	see entry
3762	WWE	World Wrestling Entertainment
3763	WWI	World War I
3764	WWII	World War II
3765	WWIII	World War III
3766	WWJD	What would Jesus do?
3767	WWS	Wheaton Warrenville South High School
3768	WWWF	World Wide Wrestling Federation
3769	WXO	Weather [Executive] Officer
3770	WY	Wyoming (postal symbol)
3771	WZ	Swaziland (FIPS 10-4 country code)
3772	XBML	eXtended Business Modelling Language
3773	XC	Ninety (in Roman numerals)
3774	XCBL	XML Common Business Library
3775	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3776	Xe	Xenon
3777	XFA	XML Forms Architecture
3778	XFC	Xtreme Fighting Championships
3779	XFD	Fighter aircraft made by Douglas
3780	Xfe	X File Explorer
3781	XFF	X-Forwarded-For
3782	XFG	Exfoliation glaucoma
3783	XFR	Automobile made by Jaguar
3784	XFT	X FreeType interface library
3785	XG	Automobile made by Hyundai
3786	XGA	Extended Graphics Array
3787	XGP	Extreme Game Player
3788	XHTML	eXtensible Hypertext Markup Language
3789	XI	Eleven (in Roman numerals)
3790	XII	Twelve (in Roman numerals)
3791	XIII	Thirteen (in Roman numerals)
3792	XIV	Fourteen (in Roman numerals)
3793	XIX	Nineteen (in Roman numerals)
3794	XJS	Automobile made by Jaguar
3795	XKB	X keyboard extension
3796	XKE	Automobile made by Jaguar
3797	XKR	Automobile made by Jaguar
3798	XML	eXtensible Markup Language
3799	XMSF	eXtensible Modelling and Simulation Framework
3800	XNA	X-No-Archive,Xeno Nucleic Acid
3801	XNC	X Northern Captain
3802	XNU	X is Not Unix
3803	XP	eXperience Point (role-playing games)
3804	XQJ	XQuery API for Java™
3805	XRAY	X-Ray
3806	XRML	eXtensible Rights Markup Language
3807	XS	Xiaolin Showdown
3808	XSL	eXtensible Style Language
3809	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3810	XUL	XML User Interface Language
3811	XV	Fifteen (in Roman numerals)
3812	XVI	Sixteen (in Roman numerals)
3813	XVII	Seventeen (in Roman numerals)
3814	XVIII	Eighteen (in Roman numerals)
3815	XWF	Xcitement Wrestling Federation
3816	XX	Twenty (in Roman numerals)
3817	Xyl	Xylobium
3818	XZN	Triple square screw driver
3819	y	Yocto-
3820	Y2K	Year Two Thousand
3821	yA	Yoctoampere
3822	Ya	Yottayear
3823	YaBPr	Yet another Brother Pat rant
3824	YABSLAG	Yet another boy singing like a girl
3825	YAC	Youth-Adult Committee
3826	YAFLA	Yet Another Five Letter Abbreviation
3827	YAP	Young Aspiring Professional
3828	YB	Youcef Benzouada (Southern Algerian name)
3829	Yb	Ytterbium
3830	yC	Yoctocoulomb
3831	YC	Yottacoulomb
3832	YDS	Yosemite Decimal System (climbing)
3833	YE	Yemen (ISO 3166 digram)
3834	YEM	Yemen (ISO 3166 trigram)
3835	yF	Yoctofarad
3836	YF	Yottafarad
3837	yg	Yoctogram
3838	Yg	Yottagram
3839	YGCO	Yamaneko Group of Comet Observers
3840	Ygo	Yu-Gi-Oh!
3841	yH	Yoctohenry
3842	YH	Yottahenry
3843	YHBT	You Have Been Trolled
3844	YHII	You Have It Inside
3845	YHS	Ya Hoor sur!
3846	Yi	Yobi
3847	Yippie	Youth International Party + suffix
3848	yJ	Yoctojoule
3849	YJ	Yottajoule
3850	yK	Yoctokelvin
3851	YK	Yottakelvin
3852	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3853	yL	Yoctolitre
3854	YL	Yottalitre
3855	ym	Yoctometre
3856	Ym	Yottametre
3857	YMMD	You Make My Day
3858	yN	Yoctonewton
3859	YN	Yottanewton
3860	YOLO	You Only Live Once
3861	YPA	Yards per Pass Attempt (football statistic)
3862	YPIO	Your Problem Is Obvious
3863	YPO	Young Presidents' Organization
3864	ys	Yoctosecond
3865	yS	Yoctosiemens
3866	Ys	Yottasecond
3867	YS	Yottasiemens
3868	YSI	Young Scots for Independence
3869	yT	Yoctotesla
3870	YTD	Year-To-Date
3871	YTM	Yield to Maturity
3872	YTS	Youth Training Scheme
3873	YTT	Yoshi Topsy-Turvy
3874	Yuppie	Young Urban Professional + suffix
3875	yV	Yoctovolt
3876	YV	Yottavolt
3877	yW	Yoctowatt
3878	YW	Yottawatt
3879	YYH	YuYu Hakusho
3880	z	Zepto
3881	Z	Zetta
3882	zA	Zeptoampere
3883	ZAF	South Africa (ISO 3166 trigram)
3884	ZAMS	Zero age main sequence
3885	ZAS	Zylinder Abschaltung System
3886	ZBT	Zero-Balance Transfer (accounting)
3887	zC	Zeptocoulomb
3888	ZC	Zettacoulomb
3889	ZCM	(n) ZENworks Configuration Management
3890	ZCMK	Zone Control Master Key
3891	ZCU	Zimbabwe Cricket Union
3892	\a	Atto-