| trigonometrisk | trigonometric |
| Trigonometrisk funktion | Trigonometric function |
| Trigonometriska ettan | Pythagorean trigonometric identity |
| Trigraf | Trigraph |
| Trikala | Trikala |
| Trikiner | Trichinella |
| Triklint kristallsystem | Triclinic crystal system |
| Triklosan | Triclosan |
| trikolor | tricolour |
| trikolpater | eudicots |
| Trikosan | Tricosane |
| trikotillomani | trichotillomania |
| trikuspidalklaff | tricuspid valve |
| trikå | tricot |
| trikåer | leotard |
| trikåvaror | knitwear |
| trikåvaruhandlare | hosier |
| Trilateral Commission | Trilateral Commission |
| triljon | trillion |
| trilla | drop |
| trilla ner | fall down |
| trilla ut genom | tumble out of |
| trilling | triplet |
| trillingar | triplets |
| trillingblomssläktet | bougainvillea |
| Trilobiter | Trilobite |
| trilogi | trilogy |
| trilsk | wayward |
| trilskhet | stubbornness |
| trimaran | trimaran |
| Trimetylaminuri | Trimethylaminuria |
| Trimix | Trimix |
| trimma | trim |
