| Triatoma infestans | Triatoma infestans |
| tribadismo | tribadism |
| tribal | tribal |
| Tribalios | Triballi |
| Triberg | Triberg im Schwarzwald |
| Triblástico | Triploblasty |
| tribo | tribe |
| Tribo da Água | Water Tribe |
| Tribo de Benjamim | Tribe of Benjamin |
| Tribo de Dã | Tribe of Dan |
| Tribo de Judá | Tribe of Judah |
| Tribo de Manassés | Tribe of Manasseh |
| Tribo urbana | Urban tribe |
| tribologia | tribology |
| Tribos de Israel | Israelite |
| tribotral | clan |
| tribulação | tribulation |
| tribulaçãoida | tribulation |
| Tribulus terrestris | Tribulus terrestris |
| tribuna | gallery |
| tribuna de honra | grandstand |
| tribuna de imprensa | press box |
| tribuna do jurado | jury box |
| tribuna eleitoral | hustings |
| tribunal | bench |
| tribunal arbitral | board of arbitration |
| tribunal competente | competent court |
| Tribunal condena Saddam Hussein à forca | Saddam Hussein sentenced to death for Dujail killings |
| tribunal da chancelaria | chancery |
| tribunal de apelação | court of appeal |
| tribunal de cassação | court of cassation |
| tribunal de eqüidade | chancery |
| tribunal de justiça | court of justice |
| Tribunal de Justiça da União Europeia | European Court of Justice |
| Tribunal de Justiça das Comunidades Europeias | Court of Justice of the European Communities |
| Tribunal de Justiça Europeu | European Court of Justice |
| Tribunal de Justiça Internacional | International Court of Justice |
| tribunal de pequenas causas | small-claims court |
| tribunal de polícia | police court |
| Tribunal de Primeira Instância | Court of First Instance |
| Tribunal de segunda instância | Appeal Court |
| Tribunal de Última Instância | Court of Last Resort |
| Tribunal eclesiástico | Ecclesiastical court |
| tribunal especial | chancery |
| Tribunal Europeu dos Direitos Humanos | European Court of Human Rights |
| Tribunal Internacional de Justiça | International Court of Justice |
| Tribunal Vivo | Living Tribunal |
| tributar vida | to assess tax |
| tributação | taxation |
| tributaçãoida | assessment |
| tributo | tax |
| tributo à vida | live aid |
| Tributos Ambientais | Ecotax |
| tributoà vida | tax |
| tributário | affluent |
| tributável | taxable |
| tricameralismo | tricameralism |
| tricentenário | tercentenary |
| Tricerátopo | Triceratops |
| Trichodontidae | Beaked salmon |
| Trichomonas vaginalis | Trichomonas vaginalis |
| Trichomycteridae | Trichomycteridae |
