| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Trick photography | No definition provided | Christopher Rauch | 2023.12.01 |
| Tricks | No definition provided | Christopher Rauch | 2023.12.01 |
| Trick-track | No definition provided | Christopher Rauch | 2023.12.01 |
| Triclada | No definition provided | Christopher Rauch | 2023.12.01 |
| triclinic | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Tricycles | No definition provided | Christopher Rauch | 2023.12.01 |
| Tridymite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Trigeminal nerves | No definition provided | Christopher Rauch | 2023.12.01 |
| trigonal | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Trigonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Trigonometrical functions | No definition provided | Christopher Rauch | 2023.12.01 |
| trigonometric function | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Trigonometric parallax | The parallax of a nearby star (less than 300 light-years) against the background of more distant stars resulting from the motion of the Earth in its orbit around the Sun. | Ryan McGranaghan | 2023.04.16 |
| Trigonometry | No definition provided | Christopher Rauch | 2023.12.01 |
| Trigonometry, Plane | No definition provided | Christopher Rauch | 2023.12.01 |
| Trigonometry, Spherical | No definition provided | Christopher Rauch | 2023.12.01 |
| Trigonometry--Tables, etc | No definition provided | Christopher Rauch | 2023.12.01 |
| Trikalsilite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Trilby (Game) | No definition provided | Christopher Rauch | 2023.12.01 |
| Trilinear coordinates | No definition provided | Christopher Rauch | 2023.12.01 |