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| Acronym | Sense | Language | Topics |
|---|---|---|---|
| NONESA | Nordic Newsletter for Southeast Asian Studies | In English | → Serial publications, periodicals → Language, linguistics, literature → Geography, biography, history |
| NOOP | National Oceanographic Partnership Program | In English | → Marine research, oceanography |
| NOP | Normal Operating Procedure | In English | |
| NOPAR | Non-OPPL Part Approval Requests | In English | |
| NOPAR | Nonorbiter Parts Authorization Request | In English | → Astronautics |
| NOR | Notice Of Revision | In English | |
| NORAD | North American Aerospace Defense Command | In English | → Military engineering → Aeronautics, aircraft → Astronautics |
| NORAD | North American Air Defense Command | In English | → 358 → Military engineering → Aeronautics, aircraft |
| NORC | National Opinion Research Center (www.norc.org) | In English | → Research institutes → Social sciences → United States |
| NOREX | Normes et Règlements à l'Export | In French | → Trade |
| NORGES | Network of Offshore Records of Geology and Stratigraphy | In English | → Records management → Earth sciences → Stratigraphy |
| NORM | Naturally Occurring Radioactive Material | In English | → Nuclear technology |
| NORMCERQ | Secrétariat régional de la Normalisation, de la Certification et de la promotion de la Qualité | In French | → United Nations → Standardization → Quality management |
| NORTANA | Norwegian Researchers and Teachers Association of North America (www.nortana.net) | In English | → Associations → Education → Language, linguistics, literature |
| NORTHAG | Northern Army Group | In English | → Military affairs |
| NOS | Network Operating System | In English | → Computer hardware → Networks, communication |
| NOS | Na Oefening Sterk | In Dutch | → Organizations and associations → Sport, physical exercises |
| NOS | Nederlandse Omroep Stichting (www.nos.nl) | In Dutch | → Foundations → Telecommunications → Netherlands |
| NOSL | Night/Day Optical Survey Of Thunderstorm Lightning | In English | → Meteorology, climatology |
| NOSP | Near-Object Scanning Probe | In English | |
| NOSP | Network Operations Support Plan | In English | |
| NOSS | National Oceanic Satellite System | In English | → Marine research, oceanography → Astronautics |
| NOUS-IS | National Online Undergraduate Seminar - Indonesian Studies | In English | |
| NOVAKA | Nederlandse Vereniging van Ondernemers-Vakhandelaren in Kantoorinrichtingen en Administratiemiddelen | In Dutch | → Organizations and associations → Netherlands |
| NOVO | Nieuwolda Onder Vrienden Opgericht | In Dutch | → Organizations and associations → Sport, physical exercises |
| NovT | Novum Testamentum | In Latin | → Religion, theology |
| NOW | National Organization for Women | In English | → Organizations and associations → Feminism |
| NÖWSVF | Niederösterreichs Wirtschaftsförderungs- und Strukturverbesserungsfonds | In German | → Finance → Economics → Austria |
| NOx | Oxydes d'Azote | In French | → Chemistry |
| NPACNFS | North Pacific Ocean Nowcast/Forecast System | In English | → Meteorology, climatology → Marine research, oceanography |
| NPAI | N'habite Plus à l'Adresse Indiquée | In French | → Transport and postal services |
| NPB | Neutral Particle Beam | In English | → Nuclear, atomic, and molecular physics |
| NPC | NASA Procurement Circular | In English | → Astronautics → United States |
| NPC | NASA Publication Control | In English | → Astronautics → United States |
| NPC | Normal Plane Change | In English | |
| NPD | NASA Policy Directive | In English | → Management → Astronautics → United States |
| NPD | Nominal Percent Defective | In English | |
| NPDES | National Pollutant Discharge Elimination System | In English | → Environmental technology, water supply, waste management |
| NPDS | Nuclear Particle Detection Subsystem | In English | → Nuclei |
| NPF | Navstar Processing Facility | In English | |
| NPF | Nation la Plus Favorisée | In French | → Economics |
| NPG | Nature Publishing Group | In English | → Serial publications, periodicals → Graphic industries, printing, publishing |
| NPG | Naval Proving Ground | In English | |
| NPGeo | Nonlinear Processes in Geophysics | In English | → Serial publications, periodicals → Geophysics |
| NPH | Neutral Protamine Hagedorn | In English | → Cardiology |
| NPhS | Nature Physical Science | In English | → Serial publications, periodicals → Physics → Chemistry → Biological sciences |
| NPIV | Nova Plena Ilustrita Vortaro | In Esperanto | → Dictionaries → Artificial languages (linguistics) |
| NPIW | North Pacific Intermediate Water | In English | → Marine research, oceanography |
| NPL | Normal Power Level | In English | → Electrical engineering |
| NPLG | National Parliamentary Library of Georgia (www.nplg.gov.ge) | In English | → Libraries → Parliaments, representation |
| NPMB | Nederlandse Piano- en Muziekinstrumentenbond | In Dutch | → Organizations and associations → Music → Netherlands |
| NPN | NASA Part Number | In English | → Astronautics → United States |
| NPNDS | Neutron Physics and Nuclear Data in Science and Technology | In English | → Serial publications, periodicals → Nuclear, atomic, and molecular physics |
| NPO | Nederlandse Publieke Omroep (www.omroep.nl) | In Dutch | → Telecommunications → Netherlands |
| NPPC | National Pork Producers Council (www.nppc.org) | In English | → Organizations and associations → Agricultural sciences |
| NPPSB | Nonequilibrium Problems in the Physical Sciences and Biology | In English | → Serial publications, periodicals → Physics → Biological sciences |
| NPRV | Nitrogen Pressure Relief Valve | In English | |
| NPS | NASA Planning Studies | In English | → Astronautics → United States |
| NPS | Nonpropulsive Stage | In English | → Astronautics |
| NPS | Nuclear Power Station | In English | → Nuclear technology |
| NPS | Nonprior Service | In English | |
| NPSH | Net Positive Suction Head | In English | |
| NPSP | Net Positive Static Pressure | In English | |
| NPSP | Net Positive Suction Pressure | In English | |
| NPSS | NASA Packet Switching System | In English | → Telecommunications → Astronautics |
| NPT | Non-Proliferation Treaty | In English | |
| NPT | Navy Pointer and Tracker | In English | → 359 → Military engineering |
| NPU | Nitrogen Purge Unit | In English | |
| NPUJ | Northwestern Polytechnical University Journal | In English | → Serial publications, periodicals → Applied sciences, technology |
| NPV | Nitrogen Pressure Valve | In English | |
| NQR | Nationaler Qualifikationsrahmen | In German | → Education |
| NR | Novjara Renkontiĵo | In Esperanto | → Artificial languages (linguistics) |
| NR | Niveau de Responsabilité | In French | → Management |
| NR | Niveau de Rémunération | In French | → Personnel management |
| NR | Nombre de Restes | In French | → Archeology |
| NRA | Nœud de Raccordement Abonné | In French | → Telecommunications |
| NRA | Notes de Référence à Appliquer | In French | |
| NRA | Norepinephrine Releasing Agent | In English | → Pharmacology, toxicology → Neurology |
| NRA&A | Nouvelle Revue d'Aéronautique et d'Astronautique | In French | → Serial publications, periodicals → Aeronautics, aircraft → Astronautics |
| NRAAO | Northeastern Regional Association of Assessing Officers (www.nraao.org) | In English | → Associations → 332 |
| NRALT | NASA Radar Altimeter | In English | → Geodesy, cartography → Astronautics → United States |
| NRAOR | National Radio Astronomy Observatory Reprints | In English | → Serial publications, periodicals → Astronomy |
| NRB | Nuclear Reactor/Brayton | In English | → Nuclear technology |
| NRB | Nieuwe Religieuze Beweging = NMR | Nouveau Mouvement Religieux | In French = NRM | New Religious Movement | In English = NRJ | Naujieji religiniai judėjimai | In Lithuanian |
In Dutch | → Modern spiritual movements |
| NRC | National Research Council | In English | → Research policy |
| NRC | Nitrosso Rubber Coating | In English | |
| NRC | Nonrecurring Costs | In English | → Prices |
| NRC | Nuclear Regulatory Commission (www.nrc.gov) | In English | → Central administration → Nuclear technology |
| NRC | Nieuwe Rotterdamse Combinatie | In Dutch | → Organizations and associations → Sport, physical exercises → Netherlands |
| NRCC | National Research Council of Canada (www.nrc-cnrc.gc.ca) | In English | → Research policy → Canada |
| NRD | National Range Division | In English | |
| NRDS | Nuclear Rocket Development Station | In English | → Nuclear technology → Astronautics |
| NRE | Nouvelles Régulations Économiques | In French | → Law, jurisprudence → Economics |
| NREL | National Renewable Energy Laboratory | In English | → Research institutes → Energy economics |
| NREN | National Research and Education Network | In English | → Networks, communication → Research policy → Education |
| NRF | National Research Foundation | In English | → Foundations → Mathematics and natural sciences → Applied sciences, technology |
| NRFA | Navigation Radio Frequency Assembly | In English | |
| NRFN | National Federation of Retail Newsagents | In English | → Organizations and associations → Trade |
| NRhWB | Rheinisches Wörterbuch Nachträge | In German | → Dictionaries → Linguistics |
| NRI | Needham Research Institute (www.nri.cam.ac.uk) | In English | → Research institutes → History → Engineering, technology → Medicine → United Kingdom |
| NRI | Non-Recurring Investment | In English | → Finance → Economic policy |
| NRI | Non-Resident Indian = PIO | Person of Indian Origin | In English |
In English | → Migrations → India |
| NRI | National Radio Institute-McGraw Hill Continuing Education Center | In English | → Specialized or polytechnical colleges → Telecommunications → United States |
| NRI | Networked Readiness Index | In English | → Economic policy → Networks, communication |
| NRI | Nomura Research Institute | In English | → Organizations and associations → Consulting → Japan |
| NRI | Norepinephrine Reuptake Inhibitor = NERI | Norepinephrine Reuptake Inhibitor | In English = NRI | Noradrenaline Reuptake Inhibitor | In English = ARI | Adrenergic Reuptake Inhibitor | In English |
In English | → Pharmacology, toxicology → Neurology |
| NRI | Noradrenaline Reuptake Inhibitor = NERI, ARI (look above) |
In English | → Pharmacology, toxicology → Neurology |
| NRJ | Naujieji religiniai judėjimai = NRB, NMR, NRM (look above) |
In Lithuanian | → Modern spiritual movements |
| NRK | Nederlandse Rode Kruis | In Dutch | → Organizations and associations → Medicine → Netherlands |
| NRK | Norsk Rikskringkasting (www.nrk.no) | In Norwegian | → Telecommunications → Norway |
| NRL | Naval Research Laboratory (www.nrl.navy.mil) | In English | → Research institutes → 359 |
| NRM | Nonrecurring Maintenance | In English | → Maintenance and logistics |
| NRM | New Religious Movement = NRB, NMR, NRJ (look above) |
In English | → Modern spiritual movements |
| NRN | National Radio Network | In English | → Telecommunications |
| NRO | Neregistara Organizajo | In Esperanto | → Organizations and associations |
| NRO | National Reconnaissance Organization (www.nro.gov) | In English | → Central administration |
| NRO | Ne-Registara Organizo = ONGs | Organizações Não Governamentais | In Portuguese = NGO | Non-Governmental Organization | In English = NGO | Nichtregierungsorganisation | In German = ANG | Aozadur Nann-Gouarnamantel | In Breton = ONG | Organisation Non Gouvernementale | In French = ONG | Organizzazione non governativa | In Italian = LSM | Lembaga Swadaya Masyarakat | In Indonesian = ONG | Organización non gobernamental | In Galician = GKE | Gobernuz Kanpoko Erakunde | In Basque = ONG | Organización no gubernamental | In Spanish = ΜΚΟ | Μη κυβερνητικές οργανώσεις | In Greek = NNO | Nevládní nezisková organizace | In Czech = ONG | Organització no governamental | In Catalan = ННО | Неурядові неприбуткові організації | In Ukrainian = ONG | Organização não governamental | In Portuguese = NGO | Niet-gouvernementele organisatie | In Dutch = NVO | Nevyriausybinė organizacija | In Lithuanian |
In Esperanto | → Organizations and associations |
| NROA | Nouvelle Revue d'Optique Appliquée | In French | → Serial publications, periodicals → Optics |
| NROpt | Nouvelle Revue d'Optique | In French | → Serial publications, periodicals → Optics |
| NRRv | Naval Research Reviews | In English | → Serial publications, periodicals → 6295 → Transport and postal services |
| NRS | Non-conformance Reporting System | In English | |
| NRSC | National Remote Sensing Centre | In English | |
| NRSV | New Revised Standard Version | In English | |
| NRT | Near Real Time | In English | |
| NRTA | Natural Resources Transfer Agreement | In English | |
| NRU | Natsionalna Radiokompanya Ukraïny | In Ukrainian | → Telecommunications |
| NRW | Nordrhein-Westfalen | In German | → Geography |
| NRZ | Nonreturn To Zero | In English | |
| NRZL | Nonreturn-To-Zero Level | In English | |
| NRZPSK | Nonreturn-To-Zero Phase Shift Key | In English | |
| NRZTTL | Nonreturn-To-Zero Transistor-Transistor Logic | In English | |
| NS | Nazareth Sisters | In English | → Roman catholic church |
| NS | Navier-Stokes | In English | → Physics |
| NS | Nuclear Shuttle | In English | → Nuclear technology → Astronautics |
| NSA | National Security Agency (www.nsa.gov) | In English | → Central administration |
| NSA | Nosewheel Steering Amplifier | In English | |
| NSACOR | National Security Agency Central Office of Record | In English | → Public administration, government |
| NSAI | National Standards Authority of Ireland (www.nsai.ie) | In English | → Standardization → Republic of Ireland |
| NSAS | NSTS/SSPE Attachment Systems | In English | |
| NSATTC | Northeastern States Addiction Technology Transfer Center (www.nattc.org) | In English | → Organizations and associations → Research policy → Engineering, technology |
| NSB | Nationaal-Socialistische Beweging | In Dutch | → Political parties and movements |
| NSB | Nationaalsocialistische Beweging | In Dutch | → Political parties and movements |
| NSC | Nepal Study Center | In English | → Organizations and associations → Language, linguistics, literature → Geography, biography, history |
| NSC | NASA Standard Computer | In English | → Computer hardware → Astronautics → United States |
| NSC | Navigational Star Catalog | In English | → Astronomy |
| NSC | Network Support COmmittee | In English | |
| NSC | Nonstandard CA Code | In English | |
| NSC | Nijkerkse Sport Club | In Dutch | → Organizations and associations → Sport, physical exercises |
| NSC | Natural Sciences Complex | In English | → Mathematics and natural sciences |
| NSC | National Security Council (www.whitehouse.gov/nsc/) | In English | → Military affairs |
| NSCCA | Nuclear Safety Cross-Check Analysis | In English | → Nuclear technology |
| NSD | NASA Standard Detonator | In English | → Astronautics → United States |
| NSE | National Stock Exchange of India | In English | → Finance |
| NSE | Nuclear Science Engineering | In English | → Serial publications, periodicals → Nuclei → Nuclear technology |
| NSE | Non-state Entity | In English | → Organizations and associations |
| NSF | Norges Standardiseringsforbund | In Norwegian | → Organizations and associations → Standardization → Norway |
| NSF | National Science Foundation (www.nsf.gov) | In English | → Foundations → Mathematics and natural sciences |
| NSF | Norsk Sosiologforening | In Norwegian | → Organizations and associations → Sociology → Norway |
| NSF | Nordisk Sociologförbund | In Norwegian | → Organizations and associations → Sociology → Europe |
| NSFW | Not Safe For Work | In English | |
| NSHS | Nosewheel Steering Hydraulic System | In English | |
| NSI | NASA Science Internet | In English | → Internet → Astronautics → Astronomy → United States |
| NSI | NASA Standard Initiator | In English | → Astronautics → United States |
| NSI | Nanostructured Surfaces and Interfaces | In English | → Mathematics and natural sciences → Applied sciences, technology |
| NSI | Network Support Item | In English | |
| NSIA | National Security Industrial Association | In English | → Associations → Military engineering |
| NSIF | Near-Space Instrumentation Facility | In English | → Astronomy → Astronautics |
| NSIL | Nouveau Système d'Information Logement | In French | → Accommodation |
| NSIPP | NASA Seasonal-to-Interannual Prediction Project | In English | → Meteorology, climatology → United States |
| NSIPP | National Security Interests in Personal Property | In English | → Law, jurisprudence → Contract law |
| NSL | Northrop Space Laboratory | In English | → Research institutes → Astronomy |
| NSLC | Nova Scotia Liquor Commission | In English | → Beverage industry → Canada |
| NSLC | National Science Learning Centre | In English | → Education → Mathematics and natural sciences |
| NSLC | Non-Small cell Lung Carcinoma | In English | → Chest diseases → Oncology |
| NSLD | NASA Shuttle Logistics Depot | In English | → Maintenance and logistics → Astronautics → United States |
| NSM | Network Status Monitor | In English | |
| NSM | Neural State Machine | In English | → Artificial intelligence |
| NSM | Network Security Monitor | In English | → Software → Networks, communication |
| NSMB | Nature Structural & Molecular Biology | In English | → Biological sciences |
| NSN | National Stock Number | In English | → Military affairs |
| NSN | Nejmenší Společný Násobek = PPCM | Plus Petit Commun Multiple | In French = LCM | Least Common Multiple | In English = KGV | Kleinste Gemene Veelvoud | In Dutch = MCM | Mínim Comú Múltiple | In Catalan = ggT | Größter gemeinsamer Teiler | In German = PMKO | Plej Malgranda Komuna Oblo | In Esperanto = MCM | Mínimo Común Múltiplo | In Spanish = PYJ | Pienin yhteinen jaettava | In Finnish = LKKT | Legkisebb közös többszörös | In Hungarian = KPK | Kelipatan persekutuan terkecil | In Indonesian = MCM | Minimo Comune Multiplo | In Italian = NWW | Najmniejsza wspólna wielokrotność | In Polish = MMC | Mínimo Múltiplo Comum | In Portuguese = НОК | Наименьшее общее кратное | In Russian = NSN | Najmenší spoločný násobok | In Slovak = НСК | Найменше спільне кратне | In Ukrainian |
In Czech | → Number theory |
| NSN | Najmenší spoločný násobok = PPCM, LCM, KGV, MCM, ggT, PMKO, PYJ, LKKT, KPK, NWW, MMC, НОК, НСК (look above) |
In Slovak | → Number theory |
| NSN | NATO Stock Number = NNO | Numéro de Nomenclature OTAN | In French |
In English | → Military affairs |
| NSO | National Standards Organisation | In English | → Organizations and associations → Standardization |
| NSO | National Solar Observatory | In English | → Observatories → Solar system |
| NSO | NASA Support Operation | In English | → Astronautics → United States |
| NSP | NASA Support Plan | In English | → Astronautics → United States |
| NSP | Network Signal Processing | In English | → Computer hardware → Networks, communication |
| NSP | Network Signal Processor | In English | → Computer hardware → Networks, communication |
| NSPAR | Nonstandard Part Approval Request | In English | |
| NSpEc | Networks and Spatial Economics | In English | → Serial publications, periodicals → Economics |
| NSPR | Netscape Portable Runtime | In English | → Software → Internet |
| NSR | Nouveau Système de Rémunération | In French | → Personnel management |
| NSS | Network Simulation System | In English | → Networks, communication → Computer simulation |
| NSSA | National Statement of Surveillance Arrangements | In English | |
| NSSCC | NORAD Space Surveillance Computation Center | In English | → Computer science → Astronomy |
| NSSDC | National Space Science Data Center | In English | → Astronomy |
| NSTD | Non-System Training Device | In English | → Education |
| NSTI | NASA Simulation Traffic Interface | In English | → Computer simulation → Astronautics → United States |
| NSTL | National Space Technology Laboratories | In English | → Research institutes → Astronomy → Astronautics |