| Tetrahydrocannabinol | tetrahydrocannabinol |
| Tetrahydrofuran | tetrahydrofuran |
| Tetragrammaton | Tetragrammaton |
| tetragonal | tetragonal |
| Hydrochinon | hydroquinone |
| Tetrabromid | tetrabromide |
| Tetrabrommethan | carbon tetrabromide |
| Tetrachlormethan | carbon tetrachloride |
| Tetraiodkohlenstoff | carbon tetraiodide |
| Tetraiodmethan | carbon tetraiodide |
| tetraedrisch | tetrahedral |
| Tetrarchie | tetrarchy |
| Transdanubien | Transdanubia |
| Transplantation | transplant |
| Zentralafrikanerin | Central African |
| intraabdominal | intraabdominal |
| Dehydrogenase | dehydrogenase |
| Hydrocortison | hydrocortisone |
| Hydrodynamik | hydrodynamics |
| Hydrogencarbonat | hydrogen carbonate |