

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| TDDB | Thermodynamic Design Data Book | In English | |
| TDDP | Trajectory Design Data Package | In English | |
| TdE | Transalpina di Energia | In Italian | → Energy economics | 
| TDEA | Triple Data Encryption Algorithm | In English | → Algorithms → Computer science | 
| TDF | Télédiffusion de France | In French | → Telecommunications → France | 
| TDF | Telemetry Data File | In English | → Files → Geodesy, cartography | 
| TDF | Telemetry Data Format | In English | → Geodesy, cartography | 
| TDG | Traffic Design Group | In English | → Transport and postal services | 
| TDI | Time-Delayed Integration | In English | |
| TDI | Texas Department of Insurance | In English | → Regional administration → Insurance | 
| TDIF | TOPEX Data Information Facility | In English | |
| TDIF | Teac Digital Interface Format | In English | → Acoustical engineering | 
| TDM | Tomodensitométrie | In French | → Image processing → Diagnostics | 
| TDM | TrashDesignManufaktur | In German | → Environmental technology, water supply, waste management → Graphic arts | 
| TDM | Technology Development Mission | In English | → Engineering, technology | 
| TDM | Time Division Multiplexer | In English | |
| TDM | Time Division Multiplexing | In English | → Data → Networks, communication | 
| TDMA | Time Division Multiple Access | In English | → Telecommunications | 
| TDMC | Taman Desa Medical Centre | In English | → Medicine | 
| TDMS | Terminal Data Management System | In English | → Data | 
| TDN | Trenkenn dizoksiribonukleek = ADN | Acidum deoxyribonucleinicum | In Latin = ADN | Acide désoxyribonucléique | In French = DNA | Deoxyribonucleic acid | In English = DNK | Deoxyribonukleová kyselina | In Czech = DNA | Deoksiribonuklea acido | In Esperanto = DNS | Deoksiribonukleïnesuur | In Afrikaans = ADN | Ácidu desoxirribonucleicu | In Asturian = DNT | Dezoksiribonuklein turşusu | In Azerbaijani = DNR | Deuoksėrėbuonokleuorūgštis | In Baltic languages = ДНК | Дезоксирибонуклеиновата киселина | In Bulgarian = DNK | Dezoksiribonukleinska kiselina | In Bosnian = DNS | Desoxyribonukleinsäure | In German = ADN | Ácido desoxirribonucleico | In Spanish = DNH | Desoksüribonukleiinhape | In Estonian = ADN | Azido desoxirribonukleiko | In Basque = ADN | Aigéad dí-ocsairibeanúicléasach | In Irish = ADN | Ácido desoxirribonucleico | In Galician = DNK | Deoksiribonukleinska kiselina | In Croatian = ADN | Asid Dezoksiribo Nikleyik | In Haitian Creole = DNS | Dezoxiribonukleinsav | In Hungarian = ԴՆԹ | Դեզօքսիռիբոնուկլեական թթուն | In Armenian = ADN | Acido deoxyribonucleic | In Interlingua = DKS | Deoxýríbóasakjarnsýra | In Icelandic = დნმ | დეზოქსირიბონუკლეინის მჟავა | In Georgian = ДНҚ | Дезоксирибонуклеин қышқылы | KK = DNR | Deoksiribonukleorūgštis | In Lithuanian = ДНХ | Дезоксирибонуклейны хүчил | In Mongolian = ADN | Acid desoxiribonucleïc | In Occitan = ADN | Ásido desoksiribonukleiko | In Papiamento = ADN | Ácido desoxirribonucleico | In Portuguese = ДНК | Дезоксирибонуклеиновая кислота | In Russian = ДНА | Диоксирибонуклеин аhыыта | SAH = DNK | Dezoksiribonukleinska kiselina | In Serbo-Croatian = DNK | Deoksiribonukleinska kislina | In Slovenian = ADN | Acidi desoksiribonukleik | SQ = ДНК | Дезоксирибонуклеинска киселина | In Serbian = DNA | Deoksiribonükleik asit | In Turkish = ДНК | Дезоксирибонуклеїнова кислота | In Ukrainian | In Breton | → Genetics → Biochemistry, biophysics | 
| TDNN | Time-Delay Neural Net | In English | → Artificial intelligence | 
| TDNT | Theological Dictionary of the New Testament | In English | → Encyclopaedias, reference works → Religion, theology | 
| TDO | Training Doet Overwinnen | In Dutch | → Organizations and associations → Sport, physical exercises | 
| TDOA | Time Difference Of Arrival | In English | → Telecommunications | 
| TDP | Taxe Dégressive de Protection | In French | → Taxes, duties | 
| TDP | Technology Demonstration Plan | In English | → Engineering, technology | 
| TDP | Temperature and Dew Point | In English | |
| TDP | Tracking Data Processor | In English | → Computer hardware → Data | 
| TDP | Technical Data Package | In English | |
| TDPD | Technical Data Program Document | In English | → Engineering, technology | 
| TDR | Time Domain Reflectometer | In English | → Electronics | 
| TDR | Technical Data Report | In English | → Engineering, technology | 
| TDR | Technical Design Review | In English | → Engineering, technology | 
| TDR | Technical Documentation Report | In English | → Engineering, technology | 
| TDR | Test Discrepancy Report | In English | |
| TDRB | Tool Design Review Board | In English | |
| TDRS | Tracking and Data Relay Satellite | In English | → Astronautics | 
| TDRS | Telemetry Downlink Receiving Site | In English | → Geodesy, cartography | 
| TDRSS | Tracking and Data Relay Satellite System | In English | → Astronautics | 
| TDS | Technology Demonstration Satellite | In English | → Astronautics | 
| TDS | Test Data System | In English | |
| TDS | Turopoljska Demokratska Stranka | In Croatian | → Political parties and movements | 
| TDS | Tokyo Disney Sea | In English | |
| TDS | Time-Delay Spectrometry | In English | → Acoustical engineering | 
| TDSP | Time-Dependent Signal Processor | In English | → Computer hardware | 
| TDT | Telemetry Data Tape | In English | → Geodesy, cartography | 
| TDT | Tower Disconnect Technician | In English | |
| TDU | Time Display Unit | In English | → Human-computer interaction | 
| TDV | Test Data Van | In English | |
| TDV | Tool Design Variance | In English | |
| TDW | Trainen Doet Winnen | In Dutch | → Organizations and associations → Sport, physical exercises | 
| TDY | Temporary Duty | In English | → Military affairs | 
| TE | Terminal Equipment | In English | → Telecommunications | 
| TE | Transposable Element | In English | → Genetics | 
| TE | Thrombocytémie Essentielle | In French | → Blood and circulatory system → Pathology | 
| TE | Test Equipment | In English | |
| TE | Timing Electronics | In English | → Electronics | 
| TE | Transmission Error | In English | |
| TE | Transporter Erector | In English | |
| TE | Travail Étranger | In French | → Organizations and associations → Labour, labour economics → History | 
| TEA | Transport Policy Evaluation and Analysis | In English | → Politics → Transport and postal services | 
| TEA | Tipperary Energy Agency | In English | → Energy economics | 
| TEA | Torque Equilibrium Attitude | In English | → Astronautics | 
| TEA | Tranche en Arrêt | In French | → Nuclear technology | 
| TEAM | Test Européen d'Aptitude au Management | In French | → Management → Education | 
| TEB | Tone-Encoded Burst | In English | |
| TEBE | Türk Eskiçağ Bilimleri Enstitüsü (http://http://turkinst.org) | In Turkish | → Organizations and associations → Archeology → Turkey | 
| TEC | Terminologia Esperanto-Centro | In Esperanto | → Artificial languages (linguistics) | 
| TEC | Training Enterprise Council | In English | → Organizations and associations → Education | 
| TEC | Test Equipment Center | In English | |
| TEC | Trans-Earth Coast | In English | |
| TEC | Tielse Eendracht Combinatie | In Dutch | → Organizations and associations → Sport, physical exercises | 
| TEC | Transports En Commun en Wallonie | In French | → Transport and postal services | 
| TecN | Technical News | In English | → Serial publications, periodicals → Applied sciences, technology | 
| TecRv | Technology Review | In English | → Serial publications, periodicals → Astronomy | 
| Tecto | Tectonics | In English | → Serial publications, periodicals → Seismology, earthquakes | 
| Tectp | Tectonophysics | In English | → Serial publications, periodicals → Geophysics | 
| TeCu | Technology and Culture | In English | → Serial publications, periodicals → Astronomy → Civilization, culture, progress | 
| TED | Test Evaluation Directorate | In English | |
| TED | Threat Environment Description | In English | |
| TED | Trailing Edge Down | In English | |
| TED | Traitement des Écritures Diverses | In French | |
| TEDH | Tribunal Europeo de Derechos Humanos (www.echr.coe.int) = ECHR | European Court of Human Rights | In English = CEDH | Cour Européenne des Droits de l'Homme | In French = ESLP | Evropský soud pro lidská práva | In Czech = EMD | Den Europæiske Menneskerettighedsdomstol | In Danish = EGMR | Europäischer Gerichtshof für Menschenrechte | In German = ΕΔΑΔ | Ευρωπαϊκό Δικαστήριο Ανθρωπίνων Δικαιωμάτων | In Greek = EIT | Euroopan ihmisoikeustuomioistuin | In Finnish = AİHM | Avrupa İnsan Hakları Mahkemesi | In Turkish = ЕСЉП | Европски суд за људска права | In Serbian = ЕСПЧ | Европейский Суд по правам человека | In Russian = CEDO | Curtea Europeană a Drepturilor Omului | In Romanian = ETPC | Europejski Trybunał Praw Człowieka | In Polish = EMD | Den europeiske menneskerettsdomstol | In Norwegian = EMD | Den europeiske menneskerettsdomstolen | In Nynorsk = EHRM | Europees Hof voor de Rechten van de Mens | In Dutch = EŽTT | Europos Žmogaus Teisių Teismas | In Lithuanian = CEDU | Corte Europea dei diritti dell'uomo | In Italian | In Spanish | → International law → Human rights → Fundamental rights | 
| TEDO | Techniek en Enthousiasme Doet Overwinnen | In Dutch | → Organizations and associations → Sport, physical exercises | 
| TEF | Transfert Électronique de Fonds | In French | → Finance | 
| TEF | Traktaten om Det Europæiske Fælleskab | In Danish | → European Union | 
| TEF | Tranche en Fonctionnement | In French | → Nuclear technology | 
| TEF | Tuluzaj Esperantistaj Fervojistoj | In Esperanto | → Organizations and associations → Transport and postal services → Artificial languages (linguistics) → France | 
| TEF | Time-Energy-Frequency | In English | → Acoustical engineering | 
| TEF | Test d'Evaluation de Français | In French | → Education → Linguistics | 
| TEG | Technical Evaluation Group | In English | → Organizations and associations | 
| TEG | Taux Effectif Global | In French | → Banks | 
| TEGI | Tractebel Electricity & Gas International | In English | → Energy economics → Electrical engineering | 
| TEGV | Türkiye Eğitim Gönüllüleri Vakfı | In Turkish | → Foundations → Turkey | 
| TEI | Trans-Earth Injection | In English | |
| TEI | Text Encoding Initiative | In English | → Data | 
| TEI | Teacher Education Institute | In English | → Education | 
| TEISC | Test and Evaluation Information Support Capability | In English | |
| TEJA | Tutmonda Esperantista Ĵurnalista Asocio | In Esperanto | → Associations → Newspapers, journalism → Artificial languages (linguistics) | 
| TEJK | Tut-Eŭropa Junulara Konferenco | In Esperanto | → Organizations and associations | 
| TEJO | Tutmonda Esperanto Junulara Organizo (www.tejo.org) | In Esperanto | → Organizations and associations → Artificial languages (linguistics) | 
| TekEl | Tekhnicheskaia Elektrodinamika = TekEL | Технiчна електродинамiка | In Russian | In Russian | → Serial publications, periodicals → Electrical engineering | 
| TekEL | Технiчна електродинамiка = TekEl (look above) | In Russian | → Serial publications, periodicals → Electrical engineering | 
| TEL | Technology Enhanced Learning | In English | → Education | 
| TEL | Tutmonda Ekumena Ligo | In Esperanto | → Organizations and associations → Religion, theology | 
| TEL | Thèse en ligne | In French | → Libraries → Higher education, universities | 
| TEL | Teneur en Eau Liquide | In French | → Applied sciences, technology | 
| TELEX | Telegraph EXchange | In English | → Telecommunications | 
| TelIn | Telematics Informatics | In English | → Serial publications, periodicals → Computer science → Telecommunications | 
| TELL | Turkish English Living Lexicon | In English | → Dictionaries → Linguistics | 
| TEM | Tranche en Marche | In French | → Nuclear technology | 
| TEM | Target Engine Module | In English | |
| TEM | Transmission Electron Microscopy = TEM | Transmissionselektronenmikroskopie | In German = MET | Microscopie électronique en transmission | In French | In English | → Physics | 
| TEM | Transmissionselektronenmikroskopie = MET (look above) | In German | → Physics | 
| TEMA | Türkiye Erozyonla Mücadele, Ağaçlandırma ve Doğal Varlıkları Koruma Vakfı (www.tema.org.tr) | In Turkish | → Foundations → 5023 → Forestry → Turkey | 
| TEMASOL | Total EDF Maroc Solaire | In French | → Energy economics → Morocco | 
| TEMIS | Technopole Microtechniques et Scientifiques de Besançon (www.temis.org) | In French | → Research policy | 
| TEMP | Test and Evaluation Master Plan | In English | |
| TEMSI | TEMps SIgnificatif | In French | → Meteorology, climatology | 
| TEN | Toxic Epidermal Necrolysis = NET | Nécrolyse Épidermique Toxique | In French | In English | → Dermatology → Immunology and allergy → Pharmacology, toxicology | 
| TEN-T | Trans-European Networks-Transport | In English | → Transport and postal services | 
| TENERRDIS | Technologies Énergies Nouvelles Énergies Renouvelables Rhône-Alpes, Drôme, Isère, Savoie | In French | → 6219 | 
| TENP | Transport Électricité Normandie-Paris | In French | → Energy economics → Electrical engineering → France | 
| TEO | Transport Électricité Ouest | In French | → Energy economics → Electrical engineering | 
| TEO | Tenpost En Omstreken | In Dutch | → Organizations and associations → Sport, physical exercises | 
| TEOS | Tetraethyl Orthosilicate = TEOS | Tetraethylorthosilikat | In German | In English | → Chemical technology | 
| TEOS | Tetraethylorthosilikat = (look above) | In German | → Chemical technology | 
| TEP | Tonne Équivalent Pétrole | In French | → Energy economics → 665 | 
| TEP | Technical Evaluation Panel | In English | |
| TEP | Test and Evaluation Plan | In English | |
| TEP | Titre Électronique de Paiement | In French | → Banks | 
| TEPC | Tissue Equivalent Proportional Counter | In English | → Radioactivity | 
| TePhL | Technical Physics Letters | In English | → Serial publications, periodicals → Applied sciences, technology | 
| TER | Transports Express Régional | In French | → Transport and postal services | 
| TER | Travail d'Études et de Recherche | In French | → Research policy → Education | 
| TER | Test Equipment Readiness | In English | |
| TER | Time Estimating Relationship | In English | |
| TER | Travel Expense Report | In English | → Prices | 
| TER | Travail d'Étude et de Recherche | In French | → Higher education, universities | 
| TERA | Transport Électricité Rhône-Alpes | In French | → Energy economics → Electrical engineering | 
| TERC | Tuned Electromagnetic Resonance Collar | In English | → Telecommunications → Acoustical engineering | 
| TerCo | Osservatorio Astronomico di Collurania Teramo - Contributi | In Italian | → Serial publications, periodicals → Astronomy | 
| TERL | Test Equipment Readiness List | In English | |
| TerMm | Osservatorio Astronomico di Collurania Teramo - Memorie ed Osservazioni | In Italian | → Serial publications, periodicals → Astronomy | 
| TERN | Teacher Education Research Network | In English | → Research policy → Education | 
| TerNC | Osservatorio Astronomico di Collurania Teramo - Note e Comunicazioni | In Italian | → Serial publications, periodicals → Astronomy | 
| TERT | Telomerase Reverse Transcriptase | In English | → Genetics → Enzymes | 
| TES | Transactions Électroniques Sécurisées | In French | → Networks, communication → Electronics → Telecommunications | 
| TESC | Triticeae EST-SSR Coordination | In English | → Genetics → Biotechnology | 
| TESE | Transport Électricité Sud-Est | In French | → Energy economics → Electrical engineering | 
| TESE | Technologies et Économie des Sytèmes Électriques | In French | → Electrical engineering | 
| TESO | Transport Électricité Sud-Ouest | In French | → Energy economics → Electrical engineering | 
| TESSAG | TEchnische Anlagen und Services AG | In German | |
| TEST | Time-Efficient Sequencer of Tests | In English | |
| TET | Trajectory Events Time Line | In English | → Astronautics | 
| TETRA | Terrestrial Trunked Radio | In English | → Telecommunications | 
| TETRA | Terminal Tracking Telescope | In English | → Astronautics | 
| TEV | Target Engine Vehicle | In English | → Vehicle engineering | 
| TEVA | Tutmonda Esperantista Vegetarana Asocio | In Esperanto | → Associations → Nutrition → Artificial languages (linguistics) | 
| TEVV | Tweede Exloërmondse Voetbal Vereniging | In Dutch | → Organizations and associations → Football and rugby | 
| TEW | Toegepaste Economische Wetenschappen | In Dutch | → Economics | 
| TEX | Technicien d'EXploitation | In French | → Labour, labour economics | 
| TEXSYS | Thermal Control System Diagnosis Expert System | In English | |
| TextMD | Technical Metadata for Text | In English | → Software → Documentation | 
| TF | Trigger Factor | In English | → Biochemistry, biophysics | 
| TF | Test Facility | In English | |
| TF | Test Fixture | In English | |
| TF1 | Télévision Française 1 (www.tf1.fr) | In French | → Telecommunications → Entertainment | 
| TFA | Takad Frankeskemm Amerika an Norzh | In Breton | → International relations → Economics | 
| TFA | Très Faible Activité | In French | → Nuclear technology | 
| TFA | Tarptautinė Fonetinė Abėcėlė = AFI | Alfabetul Fonetic Internaţional | In Romanian = LFE | Lizherenneg Fonetikel Etrebroadel | In Breton = МФА | Международната фонетична азбука | In Bulgarian = IPA | Internationales Phonetisches Alphabet | In Tosk = AFI | Alfabet Fonètic Internacional | In Catalan = IFA | Internacia Fonetika Alfabeto | In Esperanto = IPA | International Phonetic Alphabet | In English = ΔΦΑ | Διεθνές Φωνητικό Αλφάβητο | In Greek = IPA | Internationales Phonetisches Alphabet | In German = API | Alphabet Phonétique International | In French = AFI | Alfabeto Fonético Internacional | In Spanish = AFI | Alfabeto Fonético Internacional | In Galician = NAF | Nazioarteko Alfabeto Fonetikoa | In Basque = IPA | Internationaalt Phonetescht Alphabet | In Letzeburgesh = AFI | Alfabeto Fonetico Internazionale | In Italian = МФА | Международный фонетический алфавит | In Russian = AFI | Alfabeto Fonético Internacional | In Portuguese = AFI | Alfabet Fonetic Internacionau | In Occitan = IFA | Internationoal Fonetisch Alfabet | In Vlaams = AFN | Alfabeti Fonetik Ndërkombëtar | In Albanian = IFA | Internasionale Fonetiese Alfabet | In Afrikaans = AFI | Alfabetu Fonéticu Internacional | In Asturian = ХГЬА | Халкъаздагьоркьосеб гьаркьазул алфавит | In Avaric = IPA | Internationals Phonetischs Alphabet | In Austro-Bavarian = ХАФӘ́ | Халыҡ-ара фонетик алфавит | BA = МФА | Міжнародны фанетычны алфавіт | In Belarusian = AFE | Alfabèt Fonètico Entèrnacionâl | In Franco-Provençal = YFA | Ynternasjonaal Fonetysk Alfabet | In Frisian = AIF | Aibítir Idirnáisiúnta Foghraíochta | In Irish = API | Alphabeto Phonetic International | In Interlingua = IPA | Internasional a Ponetiko nga Alpabeto | ILO = IFA | Internaciona Fonetik Alfabeto | In Ido = AFN | Alfabeya Fonetîk a Navneteweyî | In Kurdish = API | Abecedarium Phoneticum Internationale | In Latin = AFI | Alfabeta Fonetical Internasional | LFN = МФА | Меѓународна фонетска азбука | In Macedonian = AFA | Abjad Fonetik Antarabangsa | In Malay = AFI | Abc Fonético Anternacional | MWL = IPA | Internatschonal Phoneetsch Alphabet | In Low German = IFA | Internasjonale Fonetiske Alfabetet | In Norwegian = AFI | Alfabèt Fonétiko Internashonal | In Papiamento = IPA | Innernatiunaal Phoneddisch Alphebedd | PDC = EFA | Entanashunal Fonetikl Alfabet | In Pitcairn-Norfolk = MAF | Międzynarodowy Alfabet Fonetyczny | In Polish = AFI | Alfabet Fonétich Intërnassional | PMS = IPA | Internaitional Phonetic Alphabet | SCO = AFN | Alfabeti Fonetik Ndërkombëtar | SQ = МФА | Међународна фонетска абецеда | In Serbian = AFI | Alfabetu Fonétiku Internasionál | In Tetum = PPA | Pandaigdigang Ponetikong Alpabeto | In Tagalog = МФА | Міжнародний фонетичний алфавіт | In Ukrainian = LFB | Lafab Fonetik Bevünetik | VO | In Lithuanian | → Alphabetic writing systems → Phonetics, phonology | 
| TFC | Toulouse Football Club | In French | → Organizations and associations → Football and rugby | 
| TFC | Taxe sur les Friches Commerciales | In French | → Taxes, duties → Trade → Regional planning | 
| TFCS | Triplex Flight Control Subsystem | In English | → Astronautics | 
| TFE | Taux de Fréquence Élargi | In French | |
| TFHTAP | Task Force on Hemispheric Transport of Air Pollution | In English | → Meteorology, climatology | 
| TFI | Technology Flight Instrumentation | In English | → Aeronautics, aircraft → Astronautics | 
| TFI | Time From Ignition | In English | → Astronautics | 
| TFIG | Task Force Implementation Group | In English | |
| TFL | Telemetry Format Load | In English | |
| TFL | Time From Launch | In English | → Astronautics | 
| TFM | Target Incentive Fee Per Mission | In English | |
| TFP | Tradition Famille Propriété | In French | → Roman catholic church → Modern spiritual movements | 
| TFP | Total Fielding Package | In English | |
| TFPI | Tissue Factor Pathway Inhibitor | In English | → 5771 | 
| TFR | Trouble and Failure Report | In English | |
| TFS | Telemetry Format Selection | In English | → Astronautics | 
| TFS | Troch Freunship Sterk | In Dutch | → Organizations and associations → Sport, physical exercises | 
| TFT | Thin Film Transistor | In English | → Electronics | 
| TFT | Tableau des Flux de Trésorerie | In French | → Accounting | 
| TFU | Test Facility Utilization | In English | |
| TG | Technical Guidance | In English | |
| TG | Test Guideline | In English | |
| TG | Taux de Gravité | In French | → Accidents, risks, safety | 
| TGA | Techniques de Gestion Administrative | In French | → Management → Economics | 
| TGA | Thermogravimetric Analysis | In English | → Analytical chemistry | 
| TGA | Thermal Gravimetric Analysis | In English | |
| TGA | Thermogravimeter Analyzer | In English | |
| TGA | Trace Gas Analyzer | In English |