| Trizytopenie | pancytopenia |
| Panzytopenie | pancytopenia |
| Thrombozytopenie | thrombocytopenia |
| Triathletin | triathlete |
| Triptoton | triptote |
| Tristesse | humdrum dejection |
| Triton | Triton |
| Tribologie | tribology |
| Trigonometrie | trigonometry |
| Trilogie | trilogy |
| Trisomie | trisomy |
| Tritonus | tritone |
| Trittstein | stepping stone |
| Zytologie | cytology |
| Osteopenie | osteopenia |
| Tropen | tropics |
| Tierpenis | pizzle |
| Ontogenie | ontogeny |
| Phylogenie | phylogeny |
| Tympanie | bloat |