

Pure sciences and exact or mathematical sciences, including astronomy, mechanics and mathematical physics.
| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| RSS | Recombination Signal Sequence | In English | → Biochemistry, biophysics | 
| RSV | Respiratory Syncytial Virus = VRS | Virus Respiratoire Syncytial | In French | In English | → Virology → Infectious diseases | 
| RT | Reverse Transcriptase | In English | → Genetics → Enzymes | 
| RT | Reverse Transcription | In English | → Genetics | 
| RT-PCR | Reverse Transcriptase Polymerase Chain Reaction | In English | → Biotechnology → Genetics → Enzymes | 
| RTAMS | Representation Theory of the American Mathematical Society | In English | → Serial publications, periodicals → Mathematics → United States | 
| RTK | Receptor Tyrosine Kinase | In English | → Enzymes | 
| RTP | Research Trends in Physics | In English | → Serial publications, periodicals → Physics | 
| RUBISCO | Ribulose Bisphosphate Carboxylase/Oxygenase | In English | → Enzymes | 
| RuPhJ | Russian Physics Journal | In English | → Serial publications, periodicals → Physics → Russia | 
| RvAc | Revue d'Acoustique | In French | → Serial publications, periodicals → Acoustics → Acoustical engineering | 
| RvAqS | Reviews in Aquatic Sciences | In English | → Serial publications, periodicals → Marine research, oceanography → Hydrology | 
| RvCF | Revista Colombiana de Física | In Spanish | → Serial publications, periodicals → Physics | 
| RvGeo | Reviews of Geophysics | In English | → Serial publications, periodicals → Geophysics | 
| RvGeS | Reviews of Geophysics Supplement | In English | → Serial publications, periodicals → Geophysics | 
| RvGPG | Revue de Géographie Physique et de Géologie Dynamique | In French | → Serial publications, periodicals → Earth sciences → Geography | 
| RvGSP | Reviews of Geophysics and Space Physics | In English | → Serial publications, periodicals → Geophysics → Astronomy | 
| RvMA | Reviews in Modern Astronomy | In English | → Serial publications, periodicals → Astronomy | 
| RvMaP | Reviews in Mathematical Physics | In English | → Serial publications, periodicals → Mathematics → Physics | 
| RvMin | Reviews of Mineralogy | In English | → Serial publications, periodicals → Mineralogy | 
| RvMP | Reviews of Modern Physics | In English | → Serial publications, periodicals → Physics | 
| RvMPS | Reviews of Modern Physics Supplement | In English | → Serial publications, periodicals → Physics | 
| RvOp | Reviews of Optics | In English | → Serial publications, periodicals → Optics | 
| RvPA | Revue de Physique Appliquée | In French | → Serial publications, periodicals → Physics | 
| RvPCJ | Review of Physical Chemistry of Japan | In English | → Serial publications, periodicals → Physical chemistry | 
| RvPP | Reviews of Plasma Physics | In English | → Serial publications, periodicals → Plasma physics | 
| RvPT | Review of Physics in Technology | In English | → Serial publications, periodicals → Physics → Engineering, technology | 
| RvRP | Revue Roumaine de Physique | In French | → Serial publications, periodicals → Physics | 
| RWTHA | Rheinisch-Westfälische Technische Hochschule, Aerodynamisches Institut, Abhandlungen | In German | → Serial publications, periodicals → Aerodynamics | 
| RyeGI | Rye Gene Index | In English | → Genetics → Biotechnology | 
| S | Serine = S | سيرين | In Arabic = S | Serina | In Catalan = S | Serin | In Czech = S | Serin | In Danish = S | Serin | In German = S | Serina | In Spanish = S | Serino | In Esperanto = S | Sérine | In French = S | 세린 | In Korean = S | Serin | In Croatian = S | Serin | In Indonesian = S | Serina | In Italian = S | סרין | In Hebrew = S | Serīns | In Latvian = S | Serin | In Letzeburgesh = S | Serinas | In Lithuanian = S | Serine | In Dutch = S | セリン | In Japanese = S | Serin | In Norwegian = S | Seryna | In Polish = S | Serina | In Portuguese = S | Серин | In Russian = S | Seriini | In Finnish = S | Serin | In Swedish = S | செர்ரீன் | In Tamil = S | Serin | In Turkish = S | Серин | In Ukrainian = S | 絲氨酸 | In Chinese | In English | → Biochemistry, biophysics | 
| S | سيرين = (look above) | In Arabic | → Biochemistry, biophysics | 
| S | Serina = (look above) | In Catalan | → Biochemistry, biophysics | 
| S | Serin = (look above) | In Czech | → Biochemistry, biophysics | 
| S | Serin = (look above) | In Danish | → Biochemistry, biophysics | 
| S | Serin = (look above) | In German | → Biochemistry, biophysics | 
| S | Serina = (look above) | In Spanish | → Biochemistry, biophysics | 
| S | Serino = (look above) | In Esperanto | → Biochemistry, biophysics | 
| S | Sérine = (look above) | In French | → Biochemistry, biophysics | 
| S | 세린 = (look above) | In Korean | → Biochemistry, biophysics | 
| S | Serin = (look above) | In Croatian | → Biochemistry, biophysics | 
| S | Serin = (look above) | In Indonesian | → Biochemistry, biophysics | 
| S | Serina = (look above) | In Italian | → Biochemistry, biophysics | 
| S | סרין = (look above) | In Hebrew | → Biochemistry, biophysics | 
| S | Serīns = (look above) | In Latvian | → Biochemistry, biophysics | 
| S | Serin = (look above) | In Letzeburgesh | → Biochemistry, biophysics | 
| S | Serinas = (look above) | In Lithuanian | → Biochemistry, biophysics | 
| S | Serine = (look above) | In Dutch | → Biochemistry, biophysics | 
| S | セリン = (look above) | In Japanese | → Biochemistry, biophysics | 
| S | Serin = (look above) | In Norwegian | → Biochemistry, biophysics | 
| S | Seryna = (look above) | In Polish | → Biochemistry, biophysics | 
| S | Serina = (look above) | In Portuguese | → Biochemistry, biophysics | 
| S | Серин = (look above) | In Russian | → Biochemistry, biophysics | 
| S | Seriini = (look above) | In Finnish | → Biochemistry, biophysics | 
| S | Serin = (look above) | In Swedish | → Biochemistry, biophysics | 
| S | செர்ரீன் = (look above) | In Tamil | → Biochemistry, biophysics | 
| S | Serin = (look above) | In Turkish | → Biochemistry, biophysics | 
| S | Серин = (look above) | In Ukrainian | → Biochemistry, biophysics | 
| S | 絲氨酸 = (look above) | In Chinese | → Biochemistry, biophysics | 
| S | Soufre = S | Swawel | In Afrikaans = S | كبريت | In Arabic = S | Azufre | In Asturian = S | Kükürd | In Azerbaijani = S | Сера | In Belarusian = S | Сяра | In Bulgarian = S | গন্ধক | In Bengali = S | Sumpor | In Bosnian = S | Sofre | In Catalan = S | Zolfu | In Corsican = S | Síra | In Czech = S | Sylffwr | In Welsh = S | Svovl | In Danish = S | Schwefel | In German = S | Θείο | In Greek = S | Sulfur | In English = S | Sulfuro | In Esperanto = S | Azufre | In Spanish = S | Väävel | In Estonian = S | Sufre | In Basque = S | گوگرد | In Persian = S | Rikki | In Finnish = S | Solfar | In Friulian = S | Xofre | In Galician = S | גופרית | In Hebrew = S | गन्धक | In Hindi = S | Sumpor | In Croatian = S | Souf | In Haitian Creole = S | Kén | In Hungarian = S | Ծծումբ | In Armenian = S | Belerang | In Indonesian = S | Sulfo | In Ido = S | Brennisteinn | In Icelandic = S | Zolfo | In Italian = S | 硫黄 | In Japanese = S | 황 | In Korean = S | Kibrît | In Kurdish = S | Schwiefel | In Letzeburgesh = S | Solfer | In Limburgish = S | Siera | In Lithuanian = S | Sērs | In Latvian = S | Pungatara | In Māori = S | Сулфур | In Macedonian = S | ഗന്ധകം | In Malayalam = S | Хүхэр | In Mongolian = S | सल्फर | In Marathi = S | Swevel | In Low German = S | Zwavel | In Dutch = S | Svovel | In Nynorsk = S | Svovel | In Norwegian = S | Sulfre | NOV = S | Sofre | In Occitan = S | Siarka | In Polish = S | Enxofre | In Portuguese = S | Salina | In Quechua = S | Sulf | In Romanian = S | Сера | In Russian = S | Surfi | In Sicilian = S | Sumpor | In Serbo-Croatian = S | Síra | In Slovak = S | Žveplo | In Slovenian = S | Squfuri | In Albanian = S | Сумпор | In Serbian = S | Walirang | In Sundanese = S | Svavel | In Swedish = S | Sulfuri | In Swahili = S | கந்தகம் | In Tamil = S | గంధకము | In Telugu = S | กำมะถัน | In Thai = S | Kükürt | In Turkish = S | Сірка | In Ukrainian = S | Oltingugurt | In Uzbek = S | Lưu huỳnh | In Vietnamese = S | שװעבל | In Yiddisch = S | 硫 | In Chinese | In French | → Chemistry | 
| S | Swawel = (look above) | In Afrikaans | → Chemistry | 
| S | كبريت = (look above) | In Arabic | → Chemistry | 
| S | Azufre = (look above) | In Asturian | → Chemistry | 
| S | Kükürd = (look above) | In Azerbaijani | → Chemistry | 
| S | Сера = (look above) | In Belarusian | → Chemistry | 
| S | Сяра = (look above) | In Bulgarian | → Chemistry | 
| S | গন্ধক = (look above) | In Bengali | → Chemistry | 
| S | Sumpor = (look above) | In Bosnian | → Chemistry | 
| S | Sofre = (look above) | In Catalan | → Chemistry | 
| S | Zolfu = (look above) | In Corsican | → Chemistry | 
| S | Síra = (look above) | In Czech | → Chemistry | 
| S | Sylffwr = (look above) | In Welsh | → Chemistry | 
| S | Svovl = (look above) | In Danish | → Chemistry | 
| S | Schwefel = (look above) | In German | → Chemistry | 
| S | Θείο = (look above) | In Greek | → Chemistry | 
| S | Sulfur = (look above) | In English | → Chemistry | 
| S | Sulfuro = (look above) | In Esperanto | → Chemistry | 
| S | Azufre = (look above) | In Spanish | → Chemistry | 
| S | Väävel = (look above) | In Estonian | → Chemistry | 
| S | Sufre = (look above) | In Basque | → Chemistry | 
| S | گوگرد = (look above) | In Persian | → Chemistry | 
| S | Rikki = (look above) | In Finnish | → Chemistry | 
| S | Solfar = (look above) | In Friulian | → Chemistry | 
| S | Xofre = (look above) | In Galician | → Chemistry | 
| S | גופרית = (look above) | In Hebrew | → Chemistry | 
| S | गन्धक = (look above) | In Hindi | → Chemistry | 
| S | Sumpor = (look above) | In Croatian | → Chemistry | 
| S | Souf = (look above) | In Haitian Creole | → Chemistry | 
| S | Kén = (look above) | In Hungarian | → Chemistry | 
| S | Ծծումբ = (look above) | In Armenian | → Chemistry | 
| S | Belerang = (look above) | In Indonesian | → Chemistry | 
| S | Sulfo = (look above) | In Ido | → Chemistry | 
| S | Brennisteinn = (look above) | In Icelandic | → Chemistry | 
| S | Zolfo = (look above) | In Italian | → Chemistry | 
| S | 硫黄 = (look above) | In Japanese | → Chemistry | 
| S | 황 = (look above) | In Korean | → Chemistry | 
| S | Kibrît = (look above) | In Kurdish | → Chemistry | 
| S | Schwiefel = (look above) | In Letzeburgesh | → Chemistry | 
| S | Solfer = (look above) | In Limburgish | → Chemistry | 
| S | Siera = (look above) | In Lithuanian | → Chemistry | 
| S | Sērs = (look above) | In Latvian | → Chemistry | 
| S | Pungatara = (look above) | In Māori | → Chemistry | 
| S | Сулфур = (look above) | In Macedonian | → Chemistry | 
| S | ഗന്ധകം = (look above) | In Malayalam | → Chemistry | 
| S | Хүхэр = (look above) | In Mongolian | → Chemistry | 
| S | सल्फर = (look above) | In Marathi | → Chemistry | 
| S | Swevel = (look above) | In Low German | → Chemistry | 
| S | Zwavel = (look above) | In Dutch | → Chemistry | 
| S | Svovel = (look above) | In Nynorsk | → Chemistry | 
| S | Svovel = (look above) | In Norwegian | → Chemistry | 
| S | Sulfre = (look above) | [NOV] | → Chemistry | 
| S | Sofre = (look above) | In Occitan | → Chemistry | 
| S | Siarka = (look above) | In Polish | → Chemistry | 
| S | Enxofre = (look above) | In Portuguese | → Chemistry | 
| S | Salina = (look above) | In Quechua | → Chemistry | 
| S | Sulf = (look above) | In Romanian | → Chemistry | 
| S | Сера = (look above) | In Russian | → Chemistry | 
| S | Surfi = (look above) | In Sicilian | → Chemistry | 
| S | Sumpor = (look above) | In Serbo-Croatian | → Chemistry | 
| S | Síra = (look above) | In Slovak | → Chemistry | 
| S | Žveplo = (look above) | In Slovenian | → Chemistry | 
| S | Squfuri = (look above) | In Albanian | → Chemistry | 
| S | Сумпор = (look above) | In Serbian | → Chemistry | 
| S | Walirang = (look above) | In Sundanese | → Chemistry | 
| S | Svavel = (look above) | In Swedish | → Chemistry | 
| S | Sulfuri = (look above) | In Swahili | → Chemistry | 
| S | கந்தகம் = (look above) | In Tamil | → Chemistry | 
| S | గంధకము = (look above) | In Telugu | → Chemistry | 
| S | กำมะถัน = (look above) | In Thai | → Chemistry | 
| S | Kükürt = (look above) | In Turkish | → Chemistry | 
| S | Сірка = (look above) | In Ukrainian | → Chemistry | 
| S | Oltingugurt = (look above) | In Uzbek | → Chemistry | 
| S | Lưu huỳnh = (look above) | In Vietnamese | → Chemistry | 
| S | שװעבל = (look above) | In Yiddisch | → Chemistry | 
| S | 硫 = (look above) | In Chinese | → Chemistry | 
| S&A | Science and Application | In English | → Applied sciences, technology | 
| S&AD | Science and Applications Directorate | In English | → Applied sciences, technology | 
| S&E | Science and Engineering | In English | → Engineering, technology | 
| S&T | Science and Technology = CyT | Ciencia y Tecnología | In Spanish = S&T | Sciences et Technologie | In French = C&T | Ciência e Tecnologia | In Portuguese | In English | → Engineering, technology | 
| S&T | Sciences et Technologie = CyT, C&T (look above) | In French | → Engineering, technology | 
| S&T | Sky and Telescope | In English | → Serial publications, periodicals → Astronomy | 
| S&W | Sterne und Weltraum | In German | → Serial publications, periodicals → Astronomy | 
| SAA | South Atlantic Anomaly | In English | → Meteorology, climatology | 
| SAA | Stochastic Analysis and Applications | In English | → Serial publications, periodicals → Mathematics | 
| SAAOC | South African Astronomical Observatory Circular | In English | → Serial publications, periodicals → Astronomy → Africa | 
| SAAOR | South African Astronomical Observatory, Republic of South Africa | In English | → Serial publications, periodicals → Astronomy → Africa | 
| SAB | Scientific Advisory Board | In English | |
| SACSO | Suspension ACtive pour essais en SOufflerie | In French | → Physics → Vehicle engineering | 
| SADIEau | Système Africain de Documentation et d'Information sur l'Eau = AWIS | African Water Information (and Documentation) System | In English | In French | → Knowledge management → Hydrology → 626 → Environmental technology, water supply, waste management → Africa | 
| SAEST | Seminario pri Aplikado de Esperanto en Scienco kaj Tekniko | In Esperanto | → Congresses → Applied sciences, technology → Artificial languages (linguistics) | 
| SAFE | San Andreas Fault Experiment | In English | → Earth sciences | 
| SAFIRE | Service des Avions Français Instrumentés pour la Recherche en Environnement | In English | → Aeronautics, aircraft → Environmental protection → Threats to the environment → France | 
| SAGE | Schéma d'Aménagement et de Gestion des Eaux | In French | → Hydrology → 626 → 627 | 
| SAGE | Security Algorithms Group of Experts | In English | → Organizations and associations → Algorithms | 
| SAGE | Stratospheric Aerosol Gas Experiment | In English | → Meteorology, climatology | 
| SAGE | Sub-Arctic Gyre Experiment | In English | → Earth sciences | 
| SAH | S-Adenosylhomocysteine | In English | → Biochemistry, biophysics | 
| SAJPh | South African Journal of Physics | In English | → Serial publications, periodicals → Physics → Africa | 
| SAJSc | South African Journal of Science | In English | → Serial publications, periodicals → Africa | 
| SAL | Supersonic Aerophysics Laboratory | In English | → Research institutes → 5335 → Aeronautics, aircraft → United States | 
| SAL | Saharan Air Layer | In English | → Meteorology, climatology | 
| SAM | S-adenosylmethionine | In English | → Biochemistry, biophysics | 
| SAM | S-Adenosyl Methionine | In English | → Biochemistry, biophysics | 
| SAM | Shoot Apical Meristem | In English | → Botany | 
| SAnAp | Suppléments aux Annales d'Astrophysique | In French | → Serial publications, periodicals → Astronomy | 
| SANDRE | Service d'Administration Nationale des Données et Référentiels sur l'Eau | In French | → Central administration → Hydrology → 627 → Environmental technology, water supply, waste management | 
| SANS | Stellar Autonomous Navigation System | In English | → Astronomy → Astronautics | 
| SAOCo | Smithsonian Astrophysical Observatory - Contributions to Astrophysics | In English | → Serial publications, periodicals → Astronomy → Observatories → United States | 
| SApMM | North Holland Series Applied Mathematics Mechanics | In English | → Serial publications, periodicals → Mathematics → Mechanical engineering → Netherlands | 
| SAPS | Statistical Analysis of Protein Sequences | In English | → Statistics → Proteins | 
| SARM | Societatea Romana Astronomica de Meteori | In Romanian | → Astronomy | 
| SAS | Small-Angle Scattering | In English | → Optics | 
| SAS | Small Astronomy Satellite | In English | → Astronautics → Astronomy | 
| SAS | Système d'Analyse Statistique | In French | → Statistics → Mathematics | 
| SASAS | South African Society of Animal Science (www.sasas.co.za) | In English | → Organizations and associations → Zoology → Veterinary medicine → Africa | 
| SASn | Studia Astronomica Sinica | In Latin | → Serial publications, periodicals → Astronomy → China | 
| SAW | Surface Acoustic Wave | In English | → Acoustics | 
| SAWS | South African Weather Service (www.weathersa.co.za) | In English | → Meteorology, climatology → Africa | 
| SAWTEE | South Asia Watch on Trade, Economics & Environment | In English | → Trade → Environmental protection | 
| Sb | Antimoine = Sb | Antimoon | In Afrikaans = Sb | إثمد | In Arabic = Sb | Stibium | In Azerbaijani = Sb | Сурма | In Belarusian = Sb | Антимон | In Bulgarian = Sb | Antimon | In Bosnian = Sb | Antimoni | In Catalan = Sb | Antimoniu | In Corsican = Sb | Antimon | In Czech = Sb | Antimoni | In Welsh = Sb | Antimon | In Danish = Sb | Antimon | In German = Sb | Αντιμόνιο | In Greek = Sb | Antimony | In English = Sb | Antimono | In Esperanto = Sb | Antimonio | In Spanish = Sb | Antimon | In Estonian = Sb | Antimonio | In Basque = Sb | آنتیموان | In Persian = Sb | Antimoni | In Finnish = Sb | Antimoni | In Friulian = Sb | Antamón | In Irish = Sb | Antimonio | In Galician = Sb | Antimoan | In Manx = Sb | Thi (銻) | HAK = Sb | אנטימון | In Hebrew = Sb | एन्टिमोनी | In Hindi = Sb | Antimon | In Croatian = Sb | Antimwàn | In Haitian Creole = Sb | Antimon | In Hungarian = Sb | Ծարիր | In Armenian = Sb | Antimon | In Indonesian = Sb | Antimonio | In Ido = Sb | Antimon | In Icelandic = Sb | Antimonio | In Italian = Sb | アンチモン | In Japanese = Sb | antimoni | In Lojban = Sb | Antimon | JV = Sb | 안티모니 | In Korean = Sb | Stîbyûm | In Kurdish = Sb | Stibium | In Latin = Sb | Antimon | In Letzeburgesh = Sb | Antimonio | In Ligurian = Sb | Stibis | In Lithuanian = Sb | Antimons | In Latvian = Sb | ആന്റിമണി | In Malayalam = Sb | अँटिमोनी | In Marathi = Sb | Antimon | In Low German = Sb | एन्टिमोनी | In Newari (Nepal Bhasa) = Sb | Antimoon | In Dutch = Sb | Antimon | In Nynorsk = Sb | Antimon | In Norwegian = Sb | Antimòni | In Occitan = Sb | Antimony | In Kapampangan = Sb | Antymon | In Polish = Sb | اینٹیمونی | PNB = Sb | Antimônio | In Portuguese = Sb | Antimunyu | In Quechua = Sb | Stibiu | In Romanian = Sb | Сурьма | In Russian = Sb | Antimoniu | In Sicilian = Sb | Antimon | In Serbo-Croatian = Sb | Antimón | In Slovak = Sb | Antimon | In Slovenian = Sb | Антимон | In Serbian = Sb | Antimon | In Saterland Frisian = Sb | Antimon | In Swedish = Sb | ஆண்ட்டிமனி | In Tamil = Sb | Сурма | In Tajik = Sb | พลวง | In Thai = Sb | Antimonya | In Tagalog = Sb | Antimon | In Turkish = Sb | سۈرمە | In Uyghur = Sb | Стибій | In Ukrainian = Sb | کحل | In Urdu = Sb | Surma | In Uzbek = Sb | Antimon | In Vietnamese = Sb | Antimony | In Yoruba = Sb | 锑 | In Chinese | In French | → Chemistry | 
| Sb | Antimoon = (look above) | In Afrikaans | → Chemistry | 
| Sb | إثمد = (look above) | In Arabic | → Chemistry | 
| Sb | Stibium = (look above) | In Azerbaijani | → Chemistry | 
| Sb | Сурма = (look above) | In Belarusian | → Chemistry | 
| Sb | Антимон = (look above) | In Bulgarian | → Chemistry | 
| Sb | Antimon = (look above) | In Bosnian | → Chemistry | 
| Sb | Antimoni = (look above) | In Catalan | → Chemistry | 
| Sb | Antimoniu = (look above) | In Corsican | → Chemistry | 
| Sb | Antimon = (look above) | In Czech | → Chemistry | 
| Sb | Antimoni = (look above) | In Welsh | → Chemistry | 
| Sb | Antimon = (look above) | In Danish | → Chemistry | 
| Sb | Antimon = (look above) | In German | → Chemistry | 
| Sb | Αντιμόνιο = (look above) | In Greek | → Chemistry | 
| Sb | Antimony = (look above) | In English | → Chemistry | 
| Sb | Antimono = (look above) | In Esperanto | → Chemistry | 
| Sb | Antimonio = (look above) | In Spanish | → Chemistry | 
| Sb | Antimon = (look above) | In Estonian | → Chemistry | 
| Sb | Antimonio = (look above) | In Basque | → Chemistry | 
| Sb | آنتیموان = (look above) | In Persian | → Chemistry | 
| Sb | Antimoni = (look above) | In Finnish | → Chemistry |