

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| SDMS | Shuttle Data Management System | In English | → Astronautics | 
| SDN | Safety Discrepancy Notice | In English | → Accidents, risks, safety | 
| SDN | Software Development Note | In English | → Software | 
| SDN | Société Des Nations = SDN | Sociedá de Naciones | In Asturian = ОН | Общество на народите | In Bulgarian = LoN | League of Nations | In English = SDN | Sociedad de Naciones | In Spanish = LBB | Liga Bangsa-Bangsa | In Indonesian = DN | Društvo narodov | In Slovenian = NF | Nationernas förbund | In Swedish | In French | → International organizations → International relations | 
| SDN | Sociedá de Naciones = ОН, LoN, LBB, NF (look above) | In Asturian | → International organizations → International relations | 
| SDN | Sociedad de Naciones = ОН, LoN, LBB, NF (look above) | In Spanish | → International organizations → International relations | 
| SDNL | Steeldart-Niedersachsenliga | In German | → Organizations and associations → Sport, physical exercises | 
| SDNS | Secure Data Network System | In English | → Data → Networks, communication | 
| SDO | Samenspel Doet Overwinnen | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDO | Sterk Door Oefening | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDOB | Sterk Door Oefening Broek | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDOF | Single Degree of Freedom | In English | → Mechanical engineering | 
| SDOL | Samenspel Doet Overwinnen Luttenberg | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDOO | Samenspel Doet Ons Overwinnen | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDOPS | Strategic Defense Operational Planning Support | In English | → Military affairs | 
| SDOUC | Samenspel Doet Overwinnen Ulftse Combinatie | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDP | Suomen Sosialidemokraattinen Puolue | In Finnish | → Political parties and movements → Finland | 
| SDP | Socijaldemokratska partija (Hrvatske) | In Croatian | → Political parties and movements | 
| SDP | Sensor Data Processing | In English | → Data processing → Electronics | 
| SDP | Shuttle Data Processor | In English | → Data → Astronautics | 
| SDP | Site Data Processor | In English | → Data | 
| SDP | Software Development Plan | In English | → Software | 
| SDP | Standard Data Processor | In English | → Computer hardware | 
| SDP | Strategic Defense Program | In English | → Military affairs → Military engineering | 
| SDP | Subsystem Development Plan | In English | |
| SDP | Socijaldemokratska Partija (www.sdp.hr) | In Croatian | → Political parties and movements | 
| SDP | Socijaldemokratska Partija Hrvatske (www.sdp.hr) | In Croatian | → Political parties and movements | 
| SDP | Service des Pensions | In French | → Personnel management → Social welfare | 
| SDPC | Shuttle Data Processing Complex | In English | → Data processing → Astronautics | 
| SDPLV | Shuttle-Derived-Propellant Launch Vehicle | In English | → Astronautics | 
| SDQA | Space Division Quality Assurance | In English | → Quality management → Astronautics | 
| SDR | Sensor Data Record | In English | → Records management → Data | 
| SDR | Serial Data Receiver | In English | → Data | 
| SDR | Series Dissipating Regulator | In English | |
| SDR | Software Design Requirement | In English | → Software | 
| SDR | Software Design Review | In English | → Software | 
| SDR | Spacelab Disposition Record | In English | → Records management → Astronautics | 
| SDR | Storage Data Register | In English | → Data | 
| SDR | System Design Review | In English | |
| SDR | Systems Definitions Review | In English | |
| SDR | Special Drawing Right | In English | → Finance | 
| SDR | Saisie des Demandes de Règlement | In French | → Accounting | 
| SDR | Situation Des Recettes | In French | → Accounting → Public finance | 
| SDRAM | Synchronous Dynamic Random Access Memory | In English | → Memories | 
| SDRB | Software Design Review Board | In English | → Software | 
| SDRC | Structural Dynamics Research Corporation | In English | → Physics → Mechanical engineering | 
| SDRE | Steroid-Dependent Regulatory Element | In English | → Biochemistry, biophysics | 
| SDRL | Subcontract(or) Data Requirements List | In English | → Contract law | 
| SDRS | Shuttle Display Reconfiguration System | In English | → Human-computer interaction → Astronautics | 
| SDRT | Soutien aux Diplômes de Recherche Technologique | In French | → Specialized or polytechnical colleges | 
| SDS | Secretaria de Estado do Meio Ambiente e Desenvolvimento Sustentável | In Portuguese | → Environmental protection | 
| SDS | Sodiumdodecylsulfat | In German | → Chemistry | 
| SDS | Sisters of the Divine Saviour | In English | → Roman catholic church | 
| SDS | Satellite Data System | In English | → Data → Astronautics | 
| SDS | Strategic Defense System | In English | → Military engineering | 
| SDS | Scientific Data System | In English | → Data | 
| SDS | Shuttle Dynamic Simulation | In English | → Astronautics | 
| SDS | Shuttle Dynamic Simulator | In English | → Astronautics | 
| SDS | Simulation Data Subsystem | In English | → Computer simulation | 
| SDS | Smoke Detector System | In English | |
| SDS | Software Design Specification | In English | → Software | 
| SDS | Space Defense System | In English | → Military engineering → Astronautics | 
| SDS | Steering and Damping Subsystem | In English | |
| SDS | Sterker Door Strijd | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDS-PAGE | Sodium Dodecylsulfate-Polyacrimide Gel Electrophoresis | In English | → Biological sciences | 
| SDSA | Synthesis-Dependant Strand Annealing | In English | → Genetics | 
| SDSA | Système de Défense Sol-Air | In French | → Military engineering | 
| SDSC | Strategic and Defence Studies Centre | In English | → Military affairs | 
| SDSC | San Diego Supercomputing Center | In English | → Computer science | 
| SDSI | Societá Degli Storici Italiani | In Italian | → Organizations and associations → History → Italia | 
| SDSS | Sloan Digital Sky Survey | In English | → Astronomy | 
| SDSS | Samostalna Demokratska Srpska Stranka (www.sdss.hr) | In Croatian | → Political parties and movements | 
| SDSS | Schweizerischer Dachverband Stationäre Stationäre | In German | → Organizations and associations → Medicine → Switzerland | 
| SDSS | South Delta Secondary School | In English | → Education | 
| SDSS | Space Division Shuttle Simulator | In English | → Astronautics | 
| SDT | Shuttle Data Tape | In English | → Data → Astronautics | 
| SDT | Structural Dynamic Test | In English | → Mechanical engineering | 
| SDTA | Structural Dynamic Test Article | In English | → Mechanical engineering | 
| SDTS | Satellite Data Transmission System | In English | → Astronautics → Telecommunications | 
| SDU | Socijalno-Demokratska Unija Hrvatske | In Croatian | → Political parties and movements | 
| SDUA | Sous-Découpage d'Unité d'Affectation | In French | |
| SDV | Sächsischer Dartverband | In German | → Organizations and associations → Sport, physical exercises | 
| SDV | Shuttle-Derived Vehicle | In English | → Astronautics | 
| SDV | Sterker Door Voetbal | In Dutch | → Organizations and associations → Football and rugby | 
| SDV | Screening Distance Value | In English | |
| SDVB | Sterk Door Vriendschap Barneveld | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDVF | Software Development and Verification Facility | In English | → Software | 
| SDVP | Schéma Départemental à Vocation Piscicole | In French | → Fishing, hunting | 
| SDW | Sterk Door Wilskracht | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDZ | Samenspel Doet Zegevieren | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SDZZ | Samenspel Doet Zegevieren Zevenaar | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SE | Survivability-Endurance | In English | |
| SE | Support Equipment | In English | |
| SE | System Effectiveness | In English | |
| SE | System Element | In English | |
| SE | System Evaluator | In English | |
| SE | Systems Engineering | In English | → Engineering, technology | 
| SE | Software Engineering | In English | → Software | 
| SE | Système d'Exploitation | In French | → Operating systems | 
| SE | Societas Europaea | In Latin | → Economics → European Union | 
| Se | Sélénium = Se | Selenium | In Afrikaans = Se | سيلينيوم | In Arabic = Se | Селен | In Belarusian = Se | Селен | In Bulgarian = Se | সেলেনিয়াম | In Bengali = Se | Selen | In Bosnian = Se | Seleni | In Catalan = Se | Seleniu | In Corsican = Se | Selen | In Czech = Se | Selen | In Danish = Se | Selen | In German = Se | Σελήνιο | In Greek = Se | Selenium | In English = Se | Seleno | In Esperanto = Se | Selenio | In Spanish = Se | Seleen | In Estonian = Se | سلنیوم | In Persian = Se | Seleeni | In Finnish = Se | Seleni | In Friulian = Se | Selenio | In Galician = Se | סלניום | In Hebrew = Se | सेलेनियम | In Hindi = Se | Selenij | In Croatian = Se | Selenyòm | In Haitian Creole = Se | Szelén | In Hungarian = Se | Սելեն | In Armenian = Se | Selenium | In Indonesian = Se | Selenio | In Ido = Se | Selen | In Icelandic = Se | Selenio | In Italian = Se | セレン | In Japanese = Se | lurcmu | In Lojban = Se | 셀레늄 | In Korean = Se | Selenium | In Latin = Se | Selen | In Letzeburgesh = Se | Selenas | In Lithuanian = Se | Selēns | In Latvian = Se | Селен | In Macedonian = Se | सेलेनियम | In Marathi = Se | Selen | In Low German = Se | Seleen | In Dutch = Se | Selen | In Nynorsk = Se | Selen | In Norwegian = Se | Selèni | In Occitan = Se | Selen | In Polish = Se | Selênio | In Portuguese = Se | Silinyu | In Quechua = Se | Seleniu | In Romanian = Se | Селен | In Russian = Se | Sileniu | In Sicilian = Se | Selen | In Serbo-Croatian = Se | Selen | In Slovenian = Se | Селен | In Serbian = Se | Selen | In Swedish = Se | Seleni | In Swahili = Se | செலீனியம் | In Tamil = Se | ซีลีเนียม | In Thai = Se | Selenyum | In Turkish = Se | Селен | In Ukrainian = Se | Selen | In Uzbek = Se | 硒 | In Chinese = Se | Selen | In Azerbaijani = Se | Seleniwm | In Welsh = Se | Selenio | In Basque = Se | Seiléiniam | In Irish = Se | Shellainium | In Manx = Se | Selenium | JV = Se | ಸೆಲೆನಿಯಮ್ | In Kannada = Se | സെലീനിയം | In Malayalam = Se | Selén | In Slovak = Se | Selen | In Vietnamese | In French | → Chemistry | 
| Se | Selenium = (look above) | In Afrikaans | → Chemistry | 
| Se | سيلينيوم = (look above) | In Arabic | → Chemistry | 
| Se | Селен = (look above) | In Belarusian | → Chemistry | 
| Se | Селен = (look above) | In Bulgarian | → Chemistry | 
| Se | সেলেনিয়াম = (look above) | In Bengali | → Chemistry | 
| Se | Selen = (look above) | In Bosnian | → Chemistry | 
| Se | Seleni = (look above) | In Catalan | → Chemistry | 
| Se | Seleniu = (look above) | In Corsican | → Chemistry | 
| Se | Selen = (look above) | In Czech | → Chemistry | 
| Se | Selen = (look above) | In Danish | → Chemistry | 
| Se | Selen = (look above) | In German | → Chemistry | 
| Se | Σελήνιο = (look above) | In Greek | → Chemistry | 
| Se | Selenium = (look above) | In English | → Chemistry | 
| Se | Seleno = (look above) | In Esperanto | → Chemistry | 
| Se | Selenio = (look above) | In Spanish | → Chemistry | 
| Se | Seleen = (look above) | In Estonian | → Chemistry | 
| Se | سلنیوم = (look above) | In Persian | → Chemistry | 
| Se | Seleeni = (look above) | In Finnish | → Chemistry | 
| Se | Seleni = (look above) | In Friulian | → Chemistry | 
| Se | Selenio = (look above) | In Galician | → Chemistry | 
| Se | סלניום = (look above) | In Hebrew | → Chemistry | 
| Se | सेलेनियम = (look above) | In Hindi | → Chemistry | 
| Se | Selenij = (look above) | In Croatian | → Chemistry | 
| Se | Selenyòm = (look above) | In Haitian Creole | → Chemistry | 
| Se | Szelén = (look above) | In Hungarian | → Chemistry | 
| Se | Սելեն = (look above) | In Armenian | → Chemistry | 
| Se | Selenium = (look above) | In Indonesian | → Chemistry | 
| Se | Selenio = (look above) | In Ido | → Chemistry | 
| Se | Selen = (look above) | In Icelandic | → Chemistry | 
| Se | Selenio = (look above) | In Italian | → Chemistry | 
| Se | セレン = (look above) | In Japanese | → Chemistry | 
| Se | lurcmu = (look above) | In Lojban | → Chemistry | 
| Se | 셀레늄 = (look above) | In Korean | → Chemistry | 
| Se | Selenium = (look above) | In Latin | → Chemistry | 
| Se | Selen = (look above) | In Letzeburgesh | → Chemistry | 
| Se | Selenas = (look above) | In Lithuanian | → Chemistry | 
| Se | Selēns = (look above) | In Latvian | → Chemistry | 
| Se | Селен = (look above) | In Macedonian | → Chemistry | 
| Se | सेलेनियम = (look above) | In Marathi | → Chemistry | 
| Se | Selen = (look above) | In Low German | → Chemistry | 
| Se | Seleen = (look above) | In Dutch | → Chemistry | 
| Se | Selen = (look above) | In Nynorsk | → Chemistry | 
| Se | Selen = (look above) | In Norwegian | → Chemistry | 
| Se | Selèni = (look above) | In Occitan | → Chemistry | 
| Se | Selen = (look above) | In Polish | → Chemistry | 
| Se | Selênio = (look above) | In Portuguese | → Chemistry | 
| Se | Silinyu = (look above) | In Quechua | → Chemistry | 
| Se | Seleniu = (look above) | In Romanian | → Chemistry | 
| Se | Селен = (look above) | In Russian | → Chemistry | 
| Se | Sileniu = (look above) | In Sicilian | → Chemistry | 
| Se | Selen = (look above) | In Serbo-Croatian | → Chemistry | 
| Se | Selén | In Serbian | → Chemistry | 
| Se | Selen = (look above) | In Slovenian | → Chemistry | 
| Se | Селен = (look above) | In Serbian | → Chemistry | 
| Se | Selen = (look above) | In Swedish | → Chemistry | 
| Se | Seleni = (look above) | In Swahili | → Chemistry | 
| Se | செலீனியம் = (look above) | In Tamil | → Chemistry | 
| Se | ซีลีเนียม = (look above) | In Thai | → Chemistry | 
| Se | Selenyum = (look above) | In Turkish | → Chemistry | 
| Se | Селен = (look above) | In Ukrainian | → Chemistry | 
| Se | Selen = (look above) | In Uzbek | → Chemistry | 
| Se | 硒 = (look above) | In Chinese | → Chemistry | 
| Se | Selen = (look above) | In Azerbaijani | → Chemistry | 
| Se | Seleniwm = (look above) | In Welsh | → Chemistry | 
| Se | Selenio = (look above) | In Basque | → Chemistry | 
| Se | Seiléiniam = (look above) | In Irish | → Chemistry | 
| Se | Shellainium = (look above) | In Manx | → Chemistry | 
| Se | Selenium = (look above) | [JV] | → Chemistry | 
| Se | ಸೆಲೆನಿಯಮ್ = (look above) | In Kannada | → Chemistry | 
| Se | സെലീനിയം = (look above) | In Malayalam | → Chemistry | 
| Se | Selén = (look above) | In Slovak | → Chemistry | 
| Se | Selen = (look above) | In Vietnamese | → Chemistry | 
| SE | Sedimentacija Eritrocita = BSE | Bezinkingssnelheid van de Erythrocyten | In Dutch = ESR | Erythrozytensedimentationsrate | In German = ESR | Erythrocyte Sedimentation Rate | In English = VES | Velocità di Eritrosedimentazione | In Italian = ENG | Eritrocitų Nusėdimo Greitis | In Lithuanian = СОЭ | Скорость оседания эритроцитов | In Russian = EÇS | Eritrositlərin Çökmə Sürəti | In Azerbaijani = ΤΚΕ | Ταχύτητα Καθιζήσεως Ερυθρών | In Greek = SE | Sedimentacija Eritrocita | In Serbian = ШОЕ | Швидкість Осідання Еритроцитів | In Ukrainian | In Serbo-Croatian | → Blood and circulatory system → Diagnostics | 
| SE | Sedimentacija Eritrocita = BSE, ESR, VES, ENG, СОЭ, EÇS, ΤΚΕ, ШОЕ (look above) | In Serbian | → Blood and circulatory system → Diagnostics | 
| SE&A | System Engineering and Analysis | In English | → Engineering, technology | 
| SE&I | Systems Engineering and Integration | In English | → Engineering, technology | 
| SE&TD | System Engineering and Technical Direction | In English | → Engineering, technology | 
| SE/FAC | Support Equipment Facility | In English | |
| SEa | Sociology of Education Association | In English | → Associations → Sociology → Education | 
| SEA | Samsø Energy Agency | In English | → Energy economics | 
| SEA | Slovak Energy Agency | In English | → Energy economics → Slovakia | 
| SEA | Statistical Energy Analysis | In English | → Physics | 
| SEA | Scanning Electrostatic Analysis | In English | |
| SEA | Silicon Elastometer Ablator | In English | |
| SEA | Scénario d'Évolution Altérée | In French | |
| SEA-EAT | South-East Asia Earthquake and Tsunami Blog | In English | → Seismology, earthquakes | 
| SEA-PZS | Srednjoeuropska Akcija - Pokret za Srednju Europu | In Croatian | → Political parties and movements | 
| SeAc | Sensors and Actuators | In English | → Serial publications, periodicals → Electrical engineering → Electronics | 
| SEACAM | Secretariat for Eastern African Coastal Area Management | In English | → International relations → 5023 → Environmental technology, water supply, waste management → Africa | 
| SEACE | Service Études et Appuis Contrôle Électrique | In French | → Electrical engineering | 
| SEACF | Support Equipment Assembly and Checkout Facility | In English | → Mechanical engineering | 
| SEACSN | Southeast Asian Conflict Studies Network | In English | → Organizations and associations → Polemology | 
| SEADS | Shuttle Entry Air Data Sensor | In English | → Astronautics | 
| SEAGA | Selective Employment of Airborne and Ground Alert | In English | |
| SEAHTP | South East Asian Historical Texts Project | In English | → Libraries → Language, linguistics, literature → History | 
| SEAID | Support Equipment Abbreviated Items Description | In English | |
| SEAiT | Southeast Asian Images and Text | In English | → Libraries → Area studies | 
| SEAL | Semantics-directed Environment Adaptation Language | In English | → 00443 | 
| SEAL | Software-Optimized Encryption Algorithm | In English | → Software → 5105 |