| MMO | Monda Meteologia Organizo = WMO | World Meteriological Organization | In English = OMM | Organisation Météorologique Mondiale | In French |
In Esperanto | → International relations → Meteorology, climatology |
| MmRAS | Memoirs of the Royal Astronomical Society | In English | → Serial publications, periodicals → Astronomy |
| MMS | Mathematics and Mechanics of Solids | In English | → Serial publications, periodicals → Mathematics → 531 |
| MmSAI | Memorie della Societa Astronomica Italiana | In Italian | → Serial publications, periodicals → Astronomy |
| MMTV | Mouse Mammary Tumor Virus | In English | → Virology → Oncology |
| Mn | Manganès = Mn | Manganese | In French = Mn | Mangaan | In Estonian = Mn | منجنيز | In Arabic = Mn | Manqan | In Azerbaijani = Mn | Mangan | In German = Mn | Манган | In Bulgarian = Mn | Manganès | In Friulian = Mn | Μαγγάνιο | In Greek = Mn | Manganeso | In Spanish = Mn | Mangano | In Esperanto = Mn | منگنز | In Persian = Mn | Manganese | In English = Mn | Mangaan | In Afrikaans = Mn | Mangan | In Bosnian = Mn | Mangan | In Danish |
In Catalan | → Chemistry |
| Mn | Mangan = (look above) |
In Danish | → Chemistry |
| Mn | Mangaan = (look above) |
In Afrikaans | → Chemistry |
| Mn | Mangan = (look above) |
In Bosnian | → Chemistry |
| Mn | Manganès = (look above) |
In Friulian | → Chemistry |
| Mn | Manganese = (look above) |
In French | → Chemistry |
| Mn | Mangaan = (look above) |
In Estonian | → Chemistry |
| Mn | منجنيز = (look above) |
In Arabic | → Chemistry |
| Mn | Manqan = (look above) |
In Azerbaijani | → Chemistry |
| Mn | Mangan = (look above) |
In German | → Chemistry |
| Mn | Манган = (look above) |
In Bulgarian | → Chemistry |
| Mn | Μαγγάνιο = (look above) |
In Greek | → Chemistry |
| Mn | Manganese = (look above) |
In English | → Chemistry |
| Mn | Manganeso = (look above) |
In Spanish | → Chemistry |
| Mn | Mangano = (look above) |
In Esperanto | → Chemistry |
| Mn | منگنز = (look above) |
In Persian | → Chemistry |
| MNRAS | Monthly Notices of the Royal Astronomical Society | In English | → Serial publications, periodicals → Astronomy |
| MnSOD | Manganese Superoxyde Dismutase | In English | → Enzymes |
| MNSSA | Monthly Notes of the Astronomical Society of South Africa | In English | → Serial publications, periodicals → Astronomy |
| MoBiMed | Molekulare Bildgebung in der Medizin | In German | → Biological sciences → Medicine |
| MOC | Meridional Overturning Circulation | In English | → Meteorology, climatology → Hydrology |
| MOCS | Multichannel Ocean Color Sensor | In English | → Marine research, oceanography |
| MODIS | Moderate Resolution Imaging Spectrometer | In English | → Analytical chemistry |
| MolPh | Molecular Physics | In English | → Serial publications, periodicals → Nuclear, atomic, and molecular physics |
| MonAP | Communications du Département d'Astrophysique de la Faculté des Sciences de Mons | In French | → Serial publications, periodicals → Astronomy |
| MoPhR | Molecular Physics Reports | In English | → Serial publications, periodicals → Nuclear, atomic, and molecular physics |
| MOPITT | Measurements of Pollution in the Troposphere | In English | → Nature → Meteorology, climatology |
| MORB | Mid-Ocean Ridge Basalt | In English | → Petrology → 55121 |
| MoSim | Molecular Simulation | In English | → Serial publications, periodicals → Nuclear, atomic, and molecular physics |
| MOSPO | Mobile Satellite Photometric Observatory | In English | → Observatories → Spaceflight engineering, astronautics |
| MPAG | Mathematical Physics, Analysis and Geometry | In English | → Serial publications, periodicals → Geometry → Analysis → Physics |
| MPAM | Mathematical Physics and Applied Mathematics | In English | → Serial publications, periodicals → Mathematics → Physics |
| MPBu | Minor Planet Bulletin | In English | → Serial publications, periodicals → Planets and satellites |
| MPC | Minor Planet Circulars | In English | → Serial publications, periodicals → Planets and satellites |
| MPC | Meteorological Prediction Center | In English | → Meteorology, climatology |
| MPCPS | Mathematical Proceedings of the Cambridge Philosophical Society | In English | → Serial publications, periodicals → Philosophy, psychology → Mathematics |
| MPDS | Mechanics and Physics of Discrete Systems | In English | → Serial publications, periodicals → Physics |
| MPEC | Minor Planet Electronic Circulars | In English | → Serial publications, periodicals → Planets and satellites |
| MPPS | Mammary Gland Physiology and Pathology Society | In English | → Organizations and associations → Physiology → Pathology → Mammals |
| MPS | Max-Planck-Institut für Sonnensystemforschung (www.mps.mpg.de) | In German | → Research institutes → Solar system |
| MR | Magnetska ili magnetna rezonancija | In Croatian | → Medicine → Nuclear, atomic, and molecular physics |
| MRCC | Modéle Régional Climatique Canadien | In French | → Meteorology, climatology |
| MRI | Magnetic Resonance Imagery = IRM | Imagerie par Résonance Magnétique | In French |
In English | → Medicine → Nuclear, atomic, and molecular physics |
| MRIR | Medium-Resolution Infrared Radiometer | In English | → Physics |
| MRJP | Major Royal Jelly Protein | In English | → Biological sciences |
| mRKS | Mótandi ríbósakjarnasýru | In Icelandic | → Genetics → Biochemistry, biophysics |
| MRMPB | Magnetic Resonance Materials in Physics, Biology and Medicine | In English | → Serial publications, periodicals → Magnetism |
| MRSR | Mars Rover Sample Return | In English | → Planets and satellites → Spaceflight engineering, astronautics |
| MRT | Magnetresonanz-Tomografie = MRT | Magnetresonanstomografi | In Swedish |
In German | → Medicine → Nuclear, atomic, and molecular physics |
| MRT | Magnetresonanstomografi = (look above) |
In Swedish | → Medicine → Nuclear, atomic, and molecular physics |
| MS | Mass Spectrometer | In English | → Chromatography, mass spectrography |
| MSAIQ | Societa Astronomica Italiana - Memorie Quarter | In Latin | → Serial publications, periodicals → Astronomy |
| MSB | Methods in Subnuclear Physics | In English | → Serial publications, periodicals → Nuclear, atomic, and molecular physics |
| MSBM | Maîtrise de Sciences Biologiques et Médicales | In French | → Higher education, universities → Biological sciences → Medicine |
| MSCTN | Meteorological Satellite Center Technical Note | In English | → Serial publications, periodicals → Meteorology, climatology |
| MSL | Mean Sea Level | In English | → Earth sciences |
| MSLD | Mass Spectrometer Leak Detector | In English | → Chromatography, mass spectrography |
| MST | Maîtrise des Sciences et Techniques | In French | → Higher education, universities → Applied sciences, technology |
| MST | Mission Scientifique et Technique | In French | → Applied sciences, technology |
| MSTM | Mixture Stochastic Trajectory Modelling | In English | → Mathematics |
| mTOR | Mammalian Target Of Rapamycin | In English | → Biochemistry, biophysics → Mammals |
| MTPE | Mission To Planet Earth | In English | → Planets and satellites → Spaceflight engineering, astronautics |
| MTR | Magnetresonanz-Tomografie | In German | → Applied sciences, technology |
| MtSOM | Mount Stromlo Observatory Mimeographs | In English | → Serial publications, periodicals → Astronomy |
| MtSRe | Mount Stromlo Observatory Reprints | In English | → Serial publications, periodicals → Astronomy |
| MtWAR | Mount Wilson and Palomar Observatory Annual Report | In English | → Serial publications, periodicals → Astronomy |
| MtWRe | Mount Wilson and Palomar Observatory Reprints | In English | → Serial publications, periodicals → Astronomy |
| MŰI | Magyar Űrkutatási Iroda | In Hungarian | → Astronomy → Spaceflight engineering, astronautics |
| MULSS | Multiple Light Scattering System | In English | → Optics |
| MURI | Multi-disciplinary Research Initiative | In English | → Research policy |
| MUT | Masterplan Umwelttechnologie | In German | → Nature |
| MVI | Microgravity Vestibular Investigation | In English | → Astronomy → Spaceflight engineering, astronautics |
| MVM | Mariner Venus/Mercury | In English | → Astronomy → Spaceflight engineering, astronautics |
| MVMP | Methoden und Verfahren der Mathematischen Physik | In German | → Serial publications, periodicals → Mathematics → Physics |
| MVO | Montserrat Volcano Observatory (www.mvo.ms) | In English | → Research institutes → 55121 |
| MWOAR | Mount Wilson Observatory Annual Report | In English | → Serial publications, periodicals → Astronomy |
| MWRv | Monthly Weather Review | In English | → Serial publications, periodicals → Meteorology, climatology |
| N | 氮 = N | Azote | In French = N | Stikstof | In Afrikaans = N | نيتروجين | In Arabic = N | Nitróxenu | In Asturian = N | Azot | In Azerbaijani = N | Азот | In Belarusian = N | Азот | In Bulgarian = N | নাইট্রোজেন | In Bengali = N | Dušik | In Bosnian = N | Nitrogen | In Catalan = N | Azotu | In Corsican = N | Dusík | In Czech = N | Азот | In Chuvash = N | Nitrogen | In Welsh = N | Kvælstof | In Danish = N | Stickstoff | In German = N | Άζωτο | In Greek = N | Nitrogen | In English = N | Azoto | In Esperanto = N | Nitrógeno | In Spanish = N | Lämmastik | In Estonian = N | Nitrogeno | In Basque = N | نیتروژن | In Persian = N | Typpi | In Finnish = N | Azôt | In Friulian = N | Nítrigin | In Irish = N | Nitróxeno | In Galician = N | નાઇટ્રોજન | In Gujarati = N | Neetragien | In Manx = N | חנקן | In Hebrew = N | नाइट्रोजन | In Hindi = N | Dušik | In Croatian = N | Azòt | In Haitian Creole = N | Nitrogén | In Hungarian = N | Ազոտ | In Armenian = N | Nitrogeno | In Interlingua = N | Nitrogen | In Indonesian = N | Nitro | In Ido = N | Nitur | In Icelandic = N | Azoto | In Italian = N | 窒素 | In Japanese = N | trano | In Lojban = N | აზოტი | In Georgian = N | 질소 | In Korean = N | Stickstoff | In Kölsch = N | Nîtrojen | In Kurdish = N | Nitrogenium | In Latin = N | Stéckstoff | In Letzeburgesh = N | Stikstof | In Limburgish = N | Azoti | In Lingala = N | Azotas | In Lithuanian = N | Slāpeklis | In Latvian = N | Hauota | In Māori = N | Азот | In Macedonian = N | നൈട്രജന് | In Malayalam = N | Азот | In Mongolian = N | नायट्रोजन | In Marathi = N | Ehēcatehuiltic | En Nahuatl = N | Stickstoff | In Low German = N | Stikstof | In Dutch = N | Nitrogen | In Nynorsk = N | Nitrogen | In Norwegian = N | Nitrogene | NOV = N | Azòt | In Occitan = N | Nitrogen | In Kapampangan = N | Azot | In Polish = N | Nitrogénio | In Portuguese = N | Qullpachaq | In Quechua = N | Azot | In Romanian = N | Азот | In Russian = N | Azzotu | In Sicilian = N | Dušik | In Serbo-Croatian = N | Dusík | In Slovak = N | Dušik | In Slovenian = N | Azoti | In Albanian = N | Азот | In Serbian = N | Kväve | In Swedish = N | Nitrojeni | In Swahili = N | நைட்ரஜன் | In Tamil = N | నత్రజని | In Telugu = N | Азот | In Tajik = N | ไนโตรเจน | In Thai = N | Azot | In Turkish = N | Азот | In Ukrainian = N | Azot | In Uzbek = N | Nitơ | In Vietnamese |
In Chinese | → Chemistry |
| N | Ազոտ = (look above) |
In Armenian | → Chemistry |
| N | Nitơ = (look above) |
In Vietnamese | → Chemistry |
| N | Nitrogeno = (look above) |
In Interlingua | → Chemistry |
| N | Nitrogen = (look above) |
In Indonesian | → Chemistry |
| N | Nitro = (look above) |
In Ido | → Chemistry |
| N | Nitur = (look above) |
In Icelandic | → Chemistry |
| N | Nîtrojen = (look above) |
In Kurdish | → Chemistry |
| N | Stickstoff = (look above) |
In Kölsch | → Chemistry |
| N | 질소 = (look above) |
In Korean | → Chemistry |
| N | აზოტი = (look above) |
In Georgian | → Chemistry |
| N | trano = (look above) |
In Lojban | → Chemistry |
| N | 窒素 = (look above) |
In Japanese | → Chemistry |
| N | Azot = (look above) |
In Uzbek | → Chemistry |
| N | Azoto = (look above) |
In Italian | → Chemistry |
| N | Nitrogén = (look above) |
In Hungarian | → Chemistry |
| N | Azòt = (look above) |
In Haitian Creole | → Chemistry |
| N | Άζωτο = (look above) |
In Greek | → Chemistry |
| N | Nitrogen = (look above) |
In English | → Chemistry |
| N | Azoto = (look above) |
In Esperanto | → Chemistry |
| N | Nitrógeno = (look above) |
In Spanish | → Chemistry |
| N | Lämmastik = (look above) |
In Estonian | → Chemistry |
| N | Nitrogeno = (look above) |
In Basque | → Chemistry |
| N | نیتروژن = (look above) |
In Persian | → Chemistry |
| N | Typpi = (look above) |
In Finnish | → Chemistry |
| N | Azôt = (look above) |
In Friulian | → Chemistry |
| N | Nítrigin = (look above) |
In Irish | → Chemistry |
| N | Nitróxeno = (look above) |
In Galician | → Chemistry |
| N | નાઇટ્રોજન = (look above) |
In Gujarati | → Chemistry |
| N | Neetragien = (look above) |
In Manx | → Chemistry |
| N | חנקן = (look above) |
In Hebrew | → Chemistry |
| N | नाइट्रोजन = (look above) |
In Hindi | → Chemistry |
| N | Dušik = (look above) |
In Croatian | → Chemistry |
| N | Stickstoff = (look above) |
In German | → Chemistry |
| N | Nitrogenium = (look above) |
In Latin | → Chemistry |
| N | Stéckstoff = (look above) |
In Letzeburgesh | → Chemistry |
| N | Qullpachaq = (look above) |
In Quechua | → Chemistry |
| N | Azot = (look above) |
In Romanian | → Chemistry |
| N | Азот = (look above) |
In Russian | → Chemistry |
| N | Azzotu = (look above) |
In Sicilian | → Chemistry |
| N | Dušik = (look above) |
In Serbo-Croatian | → Chemistry |
| N | Dusík = (look above) |
In Slovak | → Chemistry |
| N | Dušik = (look above) |
In Slovenian | → Chemistry |
| N | Azoti = (look above) |
In Albanian | → Chemistry |
| N | Азот = (look above) |
In Serbian | → Chemistry |
| N | Kväve = (look above) |
In Swedish | → Chemistry |
| N | Nitrojeni = (look above) |
In Swahili | → Chemistry |
| N | நைட்ரஜன் = (look above) |
In Tamil | → Chemistry |
| N | నత్రజని = (look above) |
In Telugu | → Chemistry |
| N | Азот = (look above) |
In Tajik | → Chemistry |
| N | ไนโตรเจน = (look above) |
In Thai | → Chemistry |
| N | Азот = (look above) |
In Ukrainian | → Chemistry |
| N | Nitrogénio = (look above) |
In Portuguese | → Chemistry |
| N | Azot = (look above) |
In Polish | → Chemistry |
| N | Nitrogen = (look above) |
In Kapampangan | → Chemistry |
| N | Stikstof = (look above) |
In Limburgish | → Chemistry |
| N | Azoti = (look above) |
In Lingala | → Chemistry |
| N | Azotas = (look above) |
In Lithuanian | → Chemistry |
| N | Slāpeklis = (look above) |
In Latvian | → Chemistry |
| N | Hauota = (look above) |
In Māori | → Chemistry |
| N | Азот = (look above) |
In Macedonian | → Chemistry |
| N | നൈട്രജന് = (look above) |
In Malayalam | → Chemistry |
| N | Азот = (look above) |
In Mongolian | → Chemistry |
| N | नायट्रोजन = (look above) |
In Marathi | → Chemistry |
| N | Ehēcatehuiltic = (look above) |
En Nahuatl | → Chemistry |
| N | Stickstoff = (look above) |
In Low German | → Chemistry |
| N | Stikstof = (look above) |
In Dutch | → Chemistry |
| N | Nitrogen = (look above) |
In Nynorsk | → Chemistry |
| N | Nitrogen = (look above) |
In Norwegian | → Chemistry |
| N | Nitrogene = (look above) |
[NOV] | → Chemistry |
| N | Azòt = (look above) |
In Occitan | → Chemistry |
| N | Azot = (look above) |
In Turkish | → Chemistry |
| N | Kvælstof = (look above) |
In Danish | → Chemistry |
| N | Nitrogen = (look above) |
In Welsh | → Chemistry |
| N | Dusík = (look above) |
In Czech | → Chemistry |
| N | Azote = (look above) |
In French | → Chemistry |
| N | Stikstof = (look above) |
In Afrikaans | → Chemistry |
| N | نيتروجين = (look above) |
In Arabic | → Chemistry |
| N | Nitróxenu = (look above) |
In Asturian | → Chemistry |
| N | Azot = (look above) |
In Azerbaijani | → Chemistry |
| N | Азот = (look above) |
In Belarusian | → Chemistry |
| N | Азот = (look above) |
In Bulgarian | → Chemistry |
| N | Азот = (look above) |
In Chuvash | → Chemistry |
| N | Azotu = (look above) |
In Corsican | → Chemistry |
| N | Nitrogen = (look above) |
In Catalan | → Chemistry |
| N | Dušik = (look above) |
In Bosnian | → Chemistry |
| N | নাইট্রোজেন = (look above) |
In Bengali | → Chemistry |
| N | Аспарагин = N | Asparagine | In English = N | Asparagina | In Catalan = N | Asparagin | In German = N | Asparagina | In Spanish = N | Asparagino | In Esperanto = N | Asparagine | In French = N | 아스파라긴 | In Japanese = N | Asparagin | In Indonesian = N | Asparagina | In Italian = N | אספרגין | In Hebrew = N | Asparagīns | In Latvian = N | Asparagin | In Letzeburgesh = N | Asparaginas | In Lithuanian = N | Asparagine | In Dutch = N | アスパラギン | In Japanese = N | Asparagina | In Polish = N | Asparagina | In Portuguese = N | Аспарагин | In Russian = N | Asparagín | In Slovak = N | Asparagiini | In Finnish = N | Asparagin | In Swedish = N | Asparagin | In Turkish = N | Аспарагін | In Ukrainian = N | 天冬酰胺 | In Chinese |
In Serbian | → Biochemistry, biophysics |
| N | Asparagine = (look above) |
In English | → Biochemistry, biophysics |
| N | Asparaginas = (look above) |
In Lithuanian | → Biochemistry, biophysics |
| N | Asparagine = (look above) |
In Dutch | → Biochemistry, biophysics |
| N | アスパラギン = (look above) |
In Japanese | → Biochemistry, biophysics |
| N | Asparagina = (look above) |
In Polish | → Biochemistry, biophysics |
| N | Asparagina = (look above) |
In Portuguese | → Biochemistry, biophysics |
| N | Asparagín = (look above) |
In Slovak | → Biochemistry, biophysics |
| N | Asparagiini = (look above) |
In Finnish | → Biochemistry, biophysics |
| N | Asparagin = (look above) |
In Swedish | → Biochemistry, biophysics |
| N | Asparagin = (look above) |
In Turkish | → Biochemistry, biophysics |
| N | Аспарагін = (look above) |
In Ukrainian | → Biochemistry, biophysics |
| N | 天冬酰胺 = (look above) |
In Chinese | → Biochemistry, biophysics |
| N | Asparagin = (look above) |
In Letzeburgesh | → Biochemistry, biophysics |
| N | Asparagin = (look above) |
In Indonesian | → Biochemistry, biophysics |
| N | Asparagina = (look above) |
In Spanish | → Biochemistry, biophysics |
| N | Asparagino = (look above) |
In Esperanto | → Biochemistry, biophysics |
| N | Asparagine = (look above) |
In French | → Biochemistry, biophysics |
| N | 아스파라긴 = (look above) |
In Japanese | → Biochemistry, biophysics |
| N | Asparagina = (look above) |
In Italian | → Biochemistry, biophysics |
| N | אספרגין = (look above) |
In Hebrew | → Biochemistry, biophysics |
| N | Asparagīns = (look above) |
In Latvian | → Biochemistry, biophysics |
| N | Аспарагин = (look above) |
In Russian | → Biochemistry, biophysics |
| N | Asparagina = (look above) |
In Catalan | → Biochemistry, biophysics |
| N | Asparagin = (look above) |
In German | → Biochemistry, biophysics |
| N2H2 | Hydrazine | In English | → Chemistry |
| Na | सोडियम = Na | Sodium | In French = Na | Natrium | In Afrikaans = Na | صوديوم | In Arabic = Na | Sodiu | In Asturian = Na | Натрый | In Belarusian = Na | Натрий | In Bulgarian = Na | সোডিয়াম | In Bengali = Na | Natrijum | In Bosnian = Na | Sodi | In Catalan = Na | Sodiu | In Corsican = Na | Sodík | In Czech = Na | Sodiwm | In Welsh = Na | Natrium | In Danish = Na | Natrium | In German = Na | ސޯޑިއަމް | In Dhivehi = Na | Νάτριο | In Greek = Na | Sodium | In English = Na | Natrio | In Esperanto = Na | Sodio | In Spanish = Na | Naatrium | In Estonian = Na | Sodio | In Basque = Na | سدیم | In Persian = Na | Natrium | In Finnish = Na | Sodi | In Friulian = Na | Sóidiam | In Irish = Na | Sodio | In Galician = Na | Sodjum | In Manx = Na | נתרן | In Hebrew = Na | सोडियम | In Hindi = Na | Natrij | In Croatian = Na | Sodyòm | In Haitian Creole = Na | Nátrium | In Hungarian = Na | Նատրիում | In Armenian = Na | Natrium | In Indonesian = Na | Natro | In Ido = Na | Natrín | In Icelandic = Na | Sodio | In Italian = Na | ナトリウム | In Japanese = Na | sodna | In Lojban = Na | Natrium | JV = Na | ნატრიუმი | In Georgian = Na | ಸೋಡಿಯಮ್ | In Kannada = Na | 나트륨 | In Korean = Na | Natrîyûm | In Kurdish = Na | Natrium | In Latin = Na | Natrium | In Letzeburgesh = Na | Sodu | In Lingala = Na | Natris | In Lithuanian = Na | Nātrijs | In Latvian = Na | Konutai | In Māori = Na | Натриум | In Macedonian = Na | സോഡിയം | In Malayalam = Na | Natrium | In Low German = Na | Natrium | In Dutch = Na | Natrium | In Nynorsk = Na | Natrium | In Norwegian = Na | Natrium | NOV = Na | Sôdgium | In Norman = Na | Sòdi | In Occitan = Na | Sód | In Polish = Na | Sódio | In Portuguese = Na | Natriyu | In Quechua = Na | Sodiu | In Romanian = Na | Натрий | In Russian = Na | Sodiu | In Sicilian = Na | Natrij | In Serbo-Croatian = Na | Sodík | In Slovak = Na | Natrij | In Slovenian = Na | Natriumi | In Albanian = Na | Натријум | In Serbian = Na | Natrium | In Swedish = Na | Natiri | In Swahili = Na | சோடியம் | In Tamil = Na | సోడియమ్ | In Telugu = Na | Натрий | In Tajik = Na | โซเดียม | In Thai = Na | Sodyum | In Turkish = Na | Натрій | In Ukrainian = Na | Natriy | In Uzbek = Na | Natri | In Vietnamese = Na | Sodiom | In Walloon = Na | 钠 | In Chinese |
In Marathi | → Chemistry |
| Na | Натриум = (look above) |
In Macedonian | → Chemistry |
| Na | Konutai = (look above) |
In Māori | → Chemistry |
| Na | Nātrijs = (look above) |
In Latvian | → Chemistry |
| Na | Natris = (look above) |
In Lithuanian | → Chemistry |
|