| trou de mémoire | blackout |
| trou de serrure | keyhole |
| trou de sonde | bore |
| Trou de ver | Wormhole |
| trou du cul | bum |
| trou noir | black hole |
| Trou Noir de Calcutta | Black Hole of Calcutta |
| Trou noir de Kerr | Kerr black hole |
| Trou noir de Kerr-Newman | Kerr-Newman metric |
| Trou noir de Reissner-Nordström | Reissner-Nordström metric |
| Trou noir extrémal | Extremal black hole |
| Trou noir intermédiaire | Intermediate-mass black hole |
| Trou noir primordial | Primordial black hole |
| Trou noir stellaire | Stellar black hole |
| trou noir supermassif | supermassive black hole |
| Trou perdu | Nest |
| troubadour | troubadour |
| troubadouresse | troubadour |
| Troubetzkoy | Trubetskoy |
| troublant | troublesome |
| trouble | dim |
| Trouble anxieux | Anxiety disorder |
| trouble bipolaire | bipolar disorder |
| trouble de l'audition | hearing impairment |
