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IMPORTANT ABBREVIATIONS

  1. VDU = video display unit
  2. CRT = cathode ray tube
  3. CRO Cathode Ray Oscillator
  4. SARS Severe Accute respitoratry syndrome
  5. BOT Built operate transfer
  6. AMU Atomic mass unit
  7. EMF Electromotive Force or Electromagnetic Field (Most apt is Electromotive Force)
  8. ADH Anti diuretic harmome
  9. STP Standard Temperature and Pressure
  10. NPT Network time protocol
  11. CRT Cathode ray tube
  12. SARS Severe Acute Respiratory Syndrome
  13. BOT Built Operate transfer
  14. AMU Atomic Mass Unit
  15. EMF Electromotive force
  16. ADH Anti Diuretic Hormone
  17. STP Standard Temperature Pressure
  18. GeV Giga Electron Volt
  19. NTP Normal Temperature Pressure
  20. CRT Cathode Ray Tube
  21. The ore of mercury metal.–cyanabar
  22. SARS : severe acute respiratory syndrome
  23. NTP : network time protocol
  24. RQ : respiratory quotient
  25. PVC : polyvinyl chloride
  26. NPN : negative positive negative
  27. WAN : wide area network
  28. ECG: electro cardio gram
  29. CPU: central processing unit
  30. BCG : bacillus of calmette –Guerin
  31. STP standard temperature and pressure/ Shielded Twisted Pair
  32. ATP Adenosine Tri-Phosphate
  33. PNP proton – neutron – proton
  34. [Positive-Negative-Positive (transistor) ]
  35. LAN local area network
  36. KWh kilo watt hour
  37. BTU British Thermal Unit
  38. LDL Low-density lipoprotein
  39. [commonly referred to as bad cholesterol]
  40. ROM Read only memory
  41. MAF million acre feet
  42. SONAR Sound Navigation and Ranging
  43. LCD=LIQUID CRYSTAL DISPLAY
  44. HDL= HARDWARE DESCRIPTION LANGUAGE/High-Density Lipoprotein
  45. UHF= ULTRA- HIGH FREQUENCY
  46. LED= LIGHT EMITTING DIODE
  47. BASIC= BEGGINER’S ALL PURPOSE SYMBOLIC INSTRUCTION CODE
  48. HST = HIGH SPEED TECHONOLGY
  49. DBS=DATA BASE SERVER
  50. V.L.C.C stands for Very large crude carrier.
  51. VTOL = vertical take off and landing
  52. SETI = Search for Extraterrestrial Intelligence = a project to find Aliens
  53. Fax is the short form of Facsimile which means identical copy
  54. SETI => Search for Extraterrestrial intelligence.
  55. On the PH scale what does PH stand for-Potential Hydrogen
  56. ABM: Anti Ballistic Missiles
  57. ABVP: Akhil Bharatiya Vidyarthi Parishad
  58. AC: Alternating Current; Ashoka Chakra
  59. ACU: Asian Currency Union
  60. AD: anno Domini; in the year of Lord Christ
  61. ADB: Asian Development Bank
  62. ADC: Aide-de-Camp; Access Deficit Charge
  63. ADF: Asian Development Fund
  64. ADS: Air Defence Ship
  65. AJT: Advanced Jet Trainer
  66. AG: Accountant General; Adjutant General
  67. AI: Air India
  68. AIDS: Acquired Immune Deficiency Syndrome
  69. AIIMS: All India Institute of Medical Sciences
  70. AIR: All India Radio; Annual Information Report
  71. AITUC: All India Trade Union Congress
  72. AJT: Advanced Jet Trainer
  73. ALH: Advanced Light Helicopter
  74. AM: ante meridiem; before noon
  75. AMC: Army Medical Corps; Asset Management Companies
  76. AME: Associate Member of the Institute of Engineers
  77. APC: Agricultural Prices Commission
  78. APEC: Asia-Pacific Economic Cooperation
  79. APPLE: Ariane Passenger Payload Experiment
  80. APPU: Asian Pacific Postal Union
  81. ARC: Asset Reconstruction Company
  82. ARDR: Agricultural and Rural Debt Relief
  83. ASAT: Anti-Satellite weapon
  84. ASC: Army Service Corps
  85. ASCI: Advanced Strategic Computing Initiative
  86. ASCII: American Standard Code for Information
  87. ASEAN: Association of South-East Asian Nations
  88. ASEM: Asia-Europe Meeting
  89. ASIMO: Advanced Step in Innovative Mobility
  90. ASLV: Augmented Satellite Launch Vehicle
  91. ASMA: Antarctica Specially Managed Area
  92. ASSOCHAM: Associated Chambers of Commerce and Industry
  93. ATA: Air Time Authority; Allen Telescope Array
  94. ATC: Air Traffic Controller
  95. ATM: Automatic Teller Machine
  96. ATR: Action Taken Report
  97. ATV: Automatic Transfer Vehicle
  98. AUM: Assets Under Management
  99. AVC: Army Veterinary Corps
  100. AVM: Additional Volatility Margin
  101. AWACS: Airborne Warning and Control System

  102. B
    BARC: Bhabha Atomic Research Centre
  103. BBC: British Broadcasting Corporation
  104. BC: Before Christ; Board of Control; British Columbia; Battery Commander
  105. BCG: Bacillus Calmette Guerin—Anti-Tuberculosis Vaccine
  106. BICP: Bureau of Industrial Costs and Prices
  107. BIFR: Board of Industrial and Financial Reconstruction
  108. BIOS: Basic Input Output System
  109. BKU: Bharatiya Kisan Union
  110. BMD: Ballistic Missile Defence System
  111. BOLT: BSE On-Line Trading (System)
  112. BOSS: Bharat Operating System Solutions
  113. BPO: Business Process Outsourcing
  114. BPR: Bottom Pressure Records
  115. BRO: Border Road Organisation
  116. BSE: Bombay Stock Exchange
  117. BSF: Border Security Force
  118. BSNL: Bharat Sanchar Nigam Ltd

  119. C
    CA: Chartered Accountant
  120. CABE: Central Advisory Board of Education
  121. C & AG: Comptroller & Auditor General
  122. CAIR: Centre for Artificial Intelligence and Robotics
  123. CAPART: Council for People’s Action and Advancement of Rural Technology
  124. CAPES: Computer-Aided Paperless Examination System
  125. CAS: Chief of Army Staff; Chief of Air Staff; Conditional Access System
  126. CB: Citizen Band (Radio)
  127. CBI: Central Bureau of Investigation
  128. CBFC: Central Board of Film Certification
  129. CCPA: Cabinet Committee on Political Affairs
  130. CD: Conference on Disarmament
  131. C-DAC: The Centre for Development of Advanced Computing
  132. CDMA: Code Division Multiple Access
  133. CECA: Comprehensive Economic Cooperation Agreement
  134. CERN: European Organisation for Nuclear Research (Pronounced CERN in French)
  135. CFC: Chlorofluro Carbon
  136. CFS: Container Freight Station
  137. CHOGM: Commonwealth Heads of Government Meeting
  138. CIA: Central Intelligence Agency (of U.S.A.)
  139. CIBIL: Credit Information Bureau (India) Ltd
  140. CIC: Chief Information Commissioner
  141. CID: Criminal Investigation Department
  142. C-in-C: Commander-in-Chief
  143. cif: cost, insurance and freight
  144. CIS: Commonwealth of Independent States
  145. CISF: Central Industrial Security Force
  146. CITES: Convention on International Trade in Endangered Species
  147. CITU: Centre of Indian Trade Unions
  148. CLASS: Computer Literacy and Studies in Schools
  149. CLAWS: Centre for Land Warfare Studies
  150. CM: Command Module; Chief Minister
  151. CMP: Common Minimum Programme
  152. CNG: Compressed Natural Gas
  153. CNN: Cable News Network
  154. CNS: Chief of the Naval Staff
  155. CO: Commanding Officer
  156. COD: Central Ordnance Depot; Cash on Delivery
  157. CPCB: Central Pollution Control Board
  158. CPI: Communist Party of India
  159. CPI(M): Communist Party of India (Marxists)
  160. CPU: Central Processing Unit
  161. CR: Central Railway
  162. CRAC: Cyber Regulation Advisory Council
  163. CRDi: Common Rail Direct injection
  164. CRISIL: Credit Rating Information Services of India Limited
  165. CRM: Customer Relationship Management
  166. CRR: Cash Reserve Ratio
  167. CRPF: Central Reserve Police Force
  168. CSIR: Council of Scientific and Industrial Research
  169. CTBT: Comprehensive Test Ban Treaty
  170. CTT: Commodities Transaction Tax
  171. CVRDE: Combat Vehicles Research and Development Establishment
  172. D
    DA: Dearness Allowance; Daily Allowance
  173. DAVP: Directorate of Advertising and Visual Publicity
  174. DC: Deputy Commissioner; Direct Current in Electricity
  175. DDT: Dichloro-Diphenyl Trichloro-ethane (disinfectant)
  176. DIN: Director Information Number
  177. DM: District Magistrate; Deputy Minister
  178. DMIC: Delhi-Mumbai Industrial Corridor
  179. DMK: Dravida Munnetra Kazhagam (a regional political party of Tamil Nadu)
  180. DNA: de-oxyribonucleic acid
  181. DO: Demi-official (letter)
  182. DOD: Department of Ocean Development
  183. DPEP: District Primary Education Programme
  184. DPI: Director of Public Instruction
  185. DRAM: Dynamic Random Access Memory
  186. DRDO: Defence Research and Development Organisation
  187. DST: Daylight Saving Time
  188. DRES: Department of Renewable Energy Sources
  189. DTH: Direct to Home (broadcasting)

  190. E
    ECG: Electro Cardio-gram
  191. ECS: Electronic Clearing Service
  192. ECT: Electro-convulsant Therapy (electric shock treatment)
  193. EDUSAT: Education Satellite
  194. EEG: Electro-encephalography
  195. EET: Exempt Exempt Taxation
  196. EFA: Education for All
  197. EFF: Extended Fund Facility
  198. e.g.: exempli gratia; for example
  199. EHTP: Electronic Hardware Technology Parks
  200. ELISA: Enzyme Linked Immuno Solvent Assay (used for testing AIDS)
  201. EMI: Equated Monthly Instalment
  202. EMS: European Monetary System
  203. EMU: Electric-Multiple Unit; Extra-vehicular Mobility Unit; (European) Economic and Monetary Union
  204. E & OE: Errors and Omissions Excepted
  205. EPROM: Erasable Programmable Read Only Memory
  206. ER: Eastern Railway
  207. ERM: Exchange Rate Mechanism
  208. ERNET: Educational and Research Network
  209. ESA: European Space Agency
  210. ESCAP: Economic and Social Commission for Asia and the Pacific
  211. ESMA: Essential Services Maintenance Act
  212. ESOP: Employee Stock Option Programme
  213. etc.: et cetera (and other things)
  214. EU: European Union
  215. EVM: Electronic Voting Machine

  216. F
    FAO: Food and Agriculture Organisation
  217. FBI: Federal Bureau of Investigation (of the U.S.A.)
  218. FCNR: Foreign Currency (non-resident) Accounts Scheme
  219. FDR: Flight Data Recorder; Fixed Deposit Receipt
  220. FEMA: Foreign Exchange Management Act
  221. FERA: Foreign Exchange Regulations Act
  222. FICCI: Federation of Indian Chambers of Commerce and Industry
  223. FII: Foreign Institutional Investors
  224. FIPB: Foreign Investment Promotion Board (of India)
  225. FLAG: Fibre Optic Link Around the Globe
  226. FM: Field Marshal; Frequency Modulated
  227. FPSB: Financial Planning Standards Boards (India)
  228. FRBM: Fiscal Responsibility and Budget Management
  229. FSSA: Food Safety and Standards Authority (of India)
  230. FTA: Free Trade Area
  231. FTP: File Transfer Protocol

  232. G
    GAGAN: GPS-aided Geo-augmented Navigation
  233. GAIL: Gas Authority of India Limited
  234. GAIN: Global Alliance for Improved Nutrition
  235. GATS: General Agreement on Trade in Services
  236. GATT: General Agreement on Tariffs and Trade
  237. GCA: General Currency Area
  238. GCC: Gulf Cooperation Council
  239. GCM: Greatest Common Measure
  240. GEF: Global Environment Fund
  241. GHQ: General Headquarters
  242. GIC: General Insurance Corporation
  243. GIST: Graphics and Intelligence-based Script Technology
  244. GMPS: Global Mobile Personal Communications System
  245. GMRT: Giant Meterwave Radio Telescope
  246. GMT: Greenwich Mean Time
  247. GNSS: Global Navigation Satellite System
  248. GNP: Gross National Product
  249. GOC: General Officer Commanding
  250. GPO: General Post Office
  251. GPRS: General Packet Radio System
  252. GPS: Global Positioning System
  253. GSLV: Geosynchronous Satellite Launch Vehicle
  254. GSP: Generalised Special Preferences
  255. GST: Goods and Service Tax
  256. GSTP: Global System of Trade Preferences

  257. H
    HAWS: High Altitude Warfare School
  258. HCF: Highest Common Factor
  259. HDI: Human Development Index
  260. HDTV: High Definition Television
  261. HE: His (or Her) Excellency; His (or Her) Eminence; High Explosive; Horizontal Equivalent
  262. HITS: Headend In The Sky
  263. HMMWV: High Mobility Multipurpose-Wheeled Vehicle
  264. HMS: Hybrid Mail Service
  265. HP: Himachal Pradesh; Horizontal Plane; Horse Power
  266. HTML: Hyper Text Markup Language
  267. HTTP: Hypetext Transfer Protocol
  268. HUDCO: Housing and Urban Development Corporation
  269. HVDC: High Voltage Direct Current
  270. I
    IAAI: International Airport Authority of India
  271. IAAS: Indian Audit and Accounts Service
  272. IADF: International Agricultural Development Fund
  273. IAEA: International Atomic Energy Agency
  274. IAF: Indian Air Force
  275. IAMC: Indian Army Medical Corps
  276. IAS: Indian Administrative Service
  277. IATA: International Air Transport Association
  278. IATT: Inland Air Travel Tax
  279. IBRD: International Bank for Reconstruction and Development
  280. IBEX: Interstellar Boundary Explorer Mission
  281. ICANN: Internet Corporation for Assigned Names and Numbers
  282. ICAO: International Civil Aviation Organisation
  283. ICAR: Indian Council of Agricultural Research
  284. ICCR: Indian Council of Cultural Relations
  285. ICCW: Indian Council for Child Welfare
  286. ICDS: Integrated Child Development Service
  287. ICJ: International Court of Justice (with Headquarters at the Hague)
  288. ICL: Indian Cricket League
  289. ICMR: Indian Council of Medical Research
  290. ICPA: Indian Cricket Players’ Association
  291. ICRC: International Committee of the Red Cross
  292. IDA: International Development Association
  293. IDBI: Industrial Development Bank of India
  294. IDSA: Institute of Defence Studies and Analysis
  295. i.e.: id est; that is
  296. IEA: International Energy Agency
  297. IES: Indian Economic Service
  298. IEX: Indian Energy Exchange
  299. IFRS: International Financial Reporting Standard
  300. IFS: Indian Foreign Service; Indian Forest Service
  301. IFTU: International Federation of Trade Unions
  302. IFWJ: Indian Federation of Working Journalists
  303. IGNOU: Indira Gandhi National Open University
  304. IIPA: Indian Institute of Public Administration
  305. IISS: International Institute of Strategic Studies
  306. IIT: Indian Institutes of Technology
  307. ILO: International Labour Organisation
  308. IMA: Indian Military Academy
  309. IMET: International Military Education Training Programme
  310. IMF: International Monetary Fund
  311. IMO: International Maritime Organisation
  312. IN: Indian Navy; Intelligent Network
  313. INA: Indian National Army
  314. INK: International Newspaper Kiosks
  315. INMARSAT: International Maritime Satellite Organisation
  316. INMAS: Institute of Nuclear Medicines and Allied Sciences
  317. INS: Indian Naval Ship; Indian Newspaper Society
  318. INSAS: Indian Small Arms System
  319. INSAT: Indian National Satellite
  320. INTERPOL: International Police Organisation
  321. INTUC: Indian National Trade Union Congress
  322. IOC: International Olympic Committee
  323. IP: Indian Police
  324. IPC: Indian Penal Code
  325. IPCC: Intergovernmental Panel on Climate Change
  326. IPEC: International Programme on Elimination of Child Labour
  327. IPR: Intellectual Property Right
  328. IPS: Indian Police Service; Indian Postal Service
  329. IPTV: Internet Protocol Television
  330. IPU: Inter-Parliamentary Union
  331. IQ: Intelligence Quotient
  332. IR: Infra-red
  333. IRA: Insurance Regulatory Authority
  334. IRBM: Intermediate Range Ballistic Missile
  335. IREP: Integrated Rural Energy Planning
  336. IRS: Indian Remote Sensing Satellite; Indian Revenue Service
  337. ISAF: International Stabilization and Assistance Force (in Afghanistan)
  338. ISC: Inter-State Council
  339. ISCS: Integrated Smart Card System
  340. ISD: International Subscriber Dialled (telephone)
  341. ISH: Information Super Highway
  342. ISKCON: International Society for Krishna Consciousness
  343. ISO: International Standardisation Organisation
  344. ISP: Internet Service Provider
  345. ISRO: Indian Space Research Organisation
  346. ISS: International Space Station
  347. IST: Indian Standard Time
  348. ISTRAC: ISRO Telemetry, Tracking and Command Network
  349. ITDC: Indian Tourism Development Corporation
  350. ITO: International Trade Organisation; Income-tax Officer
  351. ITU: International Tele-communication Union
  352. IUC: Interconnect User Charge
  353. J, K, L
    JCO: Junior Commissioned Officer
  354. JNNURM: Jawahar Lal Nehru National Urban Renewal Mission
  355. JPC: Joint Parliamentary Committee
  356. JPEG: Joint Photographic Experts Group
  357. JWG: Joint Working Group
  358. KG: Kindergarten
  359. Kg: Kilogramme
  360. KPO: Knowledge Process Outsourcing
  361. LAC: Line of Actual Control
  362. LCA: Light Combat Aircraft
  363. LDC: Least Developed Countries
  364. LHC: Large Hadron Collider
  365. LIC: Life Insurance Corporation (of India)
  366. LLP: Limited Liability Partnership
  367. LOAC: Line of Actual Control
  368. LTA: Light Transport Aircraft
  369. LTTE: Liberation Tigers of Tamil Eelam

  370. M
    MAT: Minimum Alternative Tax
  371. MER: Mars Exploration Rover
  372. MBBS: Bachelor of Medicine and Bachelor of Surgery
  373. MCF: Master Control Facility
  374. MEP: Minimum Export Price
  375. MES: Military Engineering Service
  376. METSAT: Meteorological Satellite
  377. MFA: Multi-Fibre Agreement
  378. MFN: Most Favoured Nation
  379. MIP: Moon Impact Probe
  380. MMS: Multimedia Messaging Service
  381. MMTC: Minerals and Metals Trading Corporation of India
  382. MNC: Multi-national Corporation
  383. MNIC: Multi-purpose National Identity Card
  384. MODEM: Modulator-Demodulator
  385. MRI: Magnetic Resonance Imaging
  386. MRTPC: Monopolies and Restrictive Trade Practices Commission
  387. MRTS: Mass Rapid Transit System
  388. MSA: Maritime Safety Agency
  389. MSCF: Maritime Security Cooperation Framework
  390. Mss: Manuscript
  391. MTCR: Missile Technology Control Regime
  392. MTO: Multilateral Trade Organisation
  393. MVC: Maha Vir Chakra
  394. MUNO: Maha Vir Chakra

  395. N
    NAA: National Airport Authority
  396. NABARD: National Bank for Agriculture and Rural Development. (It helps rural development by providing re-finance facility).
  397. NACIL: National Aviation Company of India Ltd
  398. NADA: National Anti-Doping Agency
  399. NAEP: National Adult Education Programme
  400. NAFTA: North America Free Trade Agreement
  401. NAG: National Air Guard
  402. NAM: Non-aligned Movement
  403. NAMA: Non-Agriculture Market Access
  404. NASA: National Aeronautics and Space Administration (of the U.S.A.)
  405. NASDAQ: National Association of Securities Dealers Automated Quotation
  406. NATA: Natural Aptitude Test for Architecture
  407. NATO: North Atlantic Treaty Organisation
  408. NAV: Net Asset Value
  409. NB: Nota bene; note well, or take notice
  410. NCA: Nuclear Command Authority
  411. NCC: National Cadet Corps
  412. NCEP: National Committee on Environmental Planning
  413. NCERT: National Council of Education Research and Training
  414. NCR: National Capital Region
  415. NDA: National Defence Academy; National Democratic Alliance
  416. NDNC: National Do Not Call (Registry)
  417. NDPS: Narcotic Drugs & Psychotropic Substances
  418. NDRF: National Disaster Response Force
  419. NDTL: National Dope Testing Laboratory
  420. NeGP: National e-governance Plan
  421. NEDB: North-Eastern Development Bank
  422. NEP: National Education Policy
  423. NEPA: National Environment Protection Authority
  424. NFO: New Fund Offers
  425. NHDP: National Highways Development Project
  426. NHRC: National Human Rights Commission
  427. NIC: National Integration Council
  428. NIFT: National Institute of Fashion Technology
  429. NIO: National Institute of Oceanography
  430. NIS: National Institute of Sports
  431. NIT: National Institute of Technology
  432. NLMA: National Literacy Mission Authority
  433. NMD: Nuclear Missile Defence
  434. NMDC: National Mineral Development Corporation
  435. NPL: National Physical Laboratory
  436. NPR: National Population Register
  437. NPT: (Nuclear) Non-Proliferation Treaty
  438. NRBI: National Rural Bank of India
  439. NREGA: National Rural Employment Guarantee Act
  440. NREP: National Rural Employment Programme
  441. NRF: National Renewal Fund
  442. NRI: Non-Resident Indian
  443. NRR: National Reproduction Rate
  444. NRSA: National Remote Sensing Agency
  445. NSA: National Security Act
  446. NSC: National Service Corps; National Security Council
  447. NSDL: National Securities Depository Limited
  448. NSE: National Stock Exchange
  449. NSR: National Skills Registry
  450. NTPC: National Thermal Power Corporation
  451. NWDA: National Water Development Agency
  452. NWRC: National Water Resources Council

  453. O
  454. OAS: Organisation of American States
  455. OAU: Organisation of African Unity
  456. OBC: Other Backward Communities
  457. OBU: Offshore Banking Unit
  458. ODA: Official Development Assistance
  459. ODF: Open Document Format
  460. ODS: Ozone Depletion Substances
  461. OECD: Organisation of Economic Co-operation and Development
  462. OGL: Open General Licence
  463. OIC: Organisation of Islamic Countries
  464. OIGS: On India Government Service
  465. OIL: Oil India Limited
  466. OM: Order of Merit
  467. ONGC: Oil and Natural Gas Commission
  468. OPEC: Organisation of Petroleum Exporting Countries
  469. OSCE: Organisation for Security and Cooperation in Europe
  470. OSD: Officer on Special Duty
  471. OXML: Open Extended Marking Language

  472. P
  473. PAC: Political Affairs Committee; Public Accounts Committee
  474. PACER: Programme for Acceleration of Commercial Energy Research
  475. PAN: Permanent Account Number (of Income-Tax)
  476. PATA: Pacific-Asia Travel Association
  477. PCS: Public Civil Service; Punjab Civil Service
  478. PIB: Press Information Bureau
  479. Pin Code: Postal Index Number Code
  480. PIO: Persons of Indian Origin
  481. PLF: Plant Load Factor
  482. PM: Post Meridiem; after-noon; also Postmaster; Prime Minister; post-mortem (after death)
  483. PMG: Postmaster General
  484. PN: Participatory Note
  485. PO: Post Office; Postal Order
  486. POPs: Persistent Organic Pollutants; Point of Purchase
  487. POTA: Prevention of Terrorism Act
  488. POW: Prisoner of War
  489. PP: Public Prosecutor; Particular Person
  490. PRO: Public Relations Officer
  491. PS: Post Scriptum; Post Script; written after
  492. PSC: Public Service Commission
  493. PSE: Public Sector Enterprises
  494. PSLV: Polar Satellite Launch Vehicle
  495. PTA: Preferential Trade Area
  496. PTI: Press Trust of India
  497. PTO: Please Turn Over; Privilege Ticket Order
  498. PUFA: Poly Unsaturated Fatty Acids
  499. PVC: Param Vir Chakra
  500. PVSM: Param Vishisht Sewa Medal
  501. PWD: Public Works Department

  502. Q, R
  503. QMG: Quarter Master General
  504. QR: Quantitative Restriction
  505. RAF: Rapid Action Force
  506. RAM: Random Access Memory
  507. RBI: Reserve Bank of India
  508. RCC: Reinforced Concrete Cement
  509. RDF: Rapid Development Force
  510. RDS: Radio Data Servicing
  511. RDSS: Radio Determination Satellite Service
  512. REACH: Rehabilitate, Educate and Support Street Children
  513. RLO: Returned Letter Office
  514. RLV: Reusable Launch Vehicle
  515. RPM: Revolution Per Minute
  516. RPO: Recruitment Process Outsourcing; Regional Passport Officer
  517. RRB: Regional Rural Bank
  518. RRPI: Rural Retail Price Index
  519. RSS: Rashtriya Swyamsevak Sangh
  520. RSVP: Repondez s’il vous plait (Fr.) reply, if you please
  521. RTGS: Real Time Gross Settlement System

  522. S
  523. SAARC: South Asian Association for Regional Co-operation
  524. SAFTA: South Asian Free Trade Area
  525. SAIL: Steel Authority of India Limited
  526. SAPTA: SAARC Preferential Trading Agreement
  527. SARS: Severe Acute Respiratory Syndrome
  528. SATNAV: Satellite Navigation (Initiative)
  529. SAVE: SAARC Audio Visual Exchange
  530. SC: Security Council; Supreme Court; Scheduled Caste
  531. SCI: Shipping Corporation of India
  532. SCO: Shanghai Cooperation Organisation
  533. SCOPE: Standing Conference on Public Enterprises
  534. SDO: Sub-Divisional Officer
  535. SDR: Special Drawing Rights (created by the World Bank)
  536. SEBI: Securities and Exchange Board of India
  537. SFC: Strategic Forces Command
  538. SGPC: Shiromani Gurdwara Prabandhak Committee
  539. SIDBI: Small Industries Development Bank of India
  540. SIT: Special Investigation Team
  541. SITE: Satellite Instructional Television Experiment
  542. SLR: Statutory Liquidity Ratio
  543. SMS: Short Messaging Service; Subscriber Management System
  544. SOS: Save Our Souls—distress signal
  545. SPG: Special Protection Group
  546. SPIN: Software Process Improvement Networks
  547. SPV: Solar Photo Voltaic
  548. SQUID: Super-conducting Quantum Interference Device
  549. SRE: Space Capsule Recovery Experiment
  550. SRV: Submarine Rescue Vessel
  551. SSN: Social Security Number
  552. STARS: Satellite Tracking and Ranging Station
  553. START: Strategic Arms Reduction Talks
  554. STEP: Science and Technology Entrepreneurship Park
  555. STT: Securities Transaction Tax
  556. SWAN: State-wide Area Network
  557. SWIFT: Society for Worldwide Financial Telecommunications

  558. T
    TA: Travelling Allowance; Territorial Army
  559. TAAI: Travel Agents Association of India
  560. TACDE: Tactics and Air Combat Development Establishment
  561. TADA: Terrorist and Disruptive Activities (Prevention) Act
  562. TAPS: Tarapur Atomic Power Station
  563. TB: Tuberculosis
  564. TDC: Transport Development Council
  565. TDS: Tax Deduction at Source
  566. TDSAT: Telecom Dispute Settlement Appellate Tribunal
  567. TERLS: Thumba Equatorial Rocket Launching Station
  568. TIFR: Tata Institute of Fundamental Research
  569. TIN: Tax Information Network
  570. TINXSYS: Tax Information Exchange System
  571. TISCO: Tata Iron and Steel Company
  572. TMC: Terrain Mapping Camera
  573. TMO: Telegraphic Money Order
  574. TNT: Tri-nitro-toluene (high explosive)
  575. TPP: 20-Point Programme
  576. TRAI: Telecom Regulatory Authority of India
  577. TRIMs: Trade Related Investment Measures
  578. TRIPS: Trade Related Intellectual Property Rights
  579. TRP: Television Rating Points; Tax Return Preparer
  580. TRYSEM: Training of Rural Youth for Self Employment
  581. TTE: Travelling Ticket Examiner
  582. TTF: Tourism Task Force
  583. U
    UAE: United Arab Emirates
    UAV: Unmanned Aerial Vehicle
  584. UF: United Front
  585. UFO: Unidentified Flying Object
  586. UGC: University Grants Commission
  587. ULFA: United Liberation Front of Assam
  588. UN: United Nations
  589. UNCTAD: United Nations Conference on Trade and Development
  590. UNDP: United Nations Development Programme
  591. UNEF: United Nations Emergency Force
  592. UNEP: United Nations Environment Programme
  593. UNESCO: United Nations Educational, Scientific and Cultural Organisation
  594. UNFPO: United Nations Fund for Population Activities
  595. UNHCR: United Nations High Commissioner for Refugees
  596. UNHRC: United Nations Human Rights Commission
  597. UNI: United News of India
  598. UNICEF: United Nations International Children’s (Emergency) Fund
  599. UNIDO: United Nations Industrial Development Organisation
  600. UNRRA: United Nations Relief and Rehabilitation Administration
  601. UNTAC: United Nations Transitional Authority for Cambodia
  602. UPA: United Progressive Alliance
  603. UPSC: Union Public Service Commission
  604. UPTN: Universal Personal Telephone Number
  605. USA: United States of America
  606. USIS: United States Information Service

  607. V
    VAT: Value-added Tax
  608. VC: Vice-Chancellor; Vice Counsel; Victoria Cross; Vir Chakra
  609. VDIS: Voluntary Disclosure of Income Scheme
  610. VHRR: Very High Resolution Radiometer
  611. VIP: Very Important Person
  612. VLSI: Very Large Scale Integration
  613. VOIP: Voice Over Internet Protocol
  614. VPN: Virtual Private Network
  615. VPP: Value Payable Post
  616. VRS: Voluntary Retirement Scheme
  617. VSAT: Very Small Aperture Terminals
  618. W
    WADA: World Anti-Doping Agency
    WAP: Wireless Application Protocol
  619. WAVE: Wireless Access for Virtual Enterprise
  620. WDF: Wasteland Development Force
  621. WEF: World Economic Forum
  622. WFP: World Food Programme
  623. WFTU: World Federation of Trade Unions
  624. WGIG: Working Group on Internet Governance
  625. WIPO: World Intellectual Property Organisation
  626. WLL: Wireless in Local Loop
  627. WMD: Weapons of Mass Destruction
  628. WR: Western Railway
  629. WTO: World Trade Organisation (previously called GATT); also World Tourism Organisation
  630. X, Y, Z
  631. XML: eXtensible Markup Language
  632. YMCA: Young Men’s Christian Association
  633. YWCA: Young Women’s Christian Association
  634. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE (IPCC) Established in 1988 by the World Meteorological Organisation (WMO) and the United Nations Environment Programme (Unep)

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