| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Triremes | No definition provided | Christopher Rauch | 2023.12.01 |
| Trisection of angle | No definition provided | Christopher Rauch | 2023.12.01 |
| Triskele | No definition provided | Christopher Rauch | 2023.12.01 |
| Trismus | No definition provided | Christopher Rauch | 2023.12.01 |
| Tristramite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| tritium | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Tritomite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Tritomite (Ce) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Tritomite (Y) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Triton | The largest moon of Neptune. | Ryan McGranaghan | 2023.04.16 |
| Triton | The seventh and the largest of Neptune's satellites. It has a diameter of 2,700 km and orbits its planet at a mean distance of 354,760 km every 5.877 days. Triton was discovered by William Lassell in 1846 scarcely a month after Neptune was discovered. Triton is colder than any other measured object in the solar system with a surface temperature of -235° C. It has an extremely thin atmosphere. Nitrogen ice particles might form thin clouds a few kilometers above the surface. The atmospheric pressure at Triton's surface is about 15 microbars, 0.000015 times the sea-level surface pressure on Earth. Triton is the only large satellite in the solar system to circle a planet in a retrograde motion, that is in a direction opposite to the rotation of the planet. | Ryan McGranaghan | 2023.04.16 |
| Triton | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Triumphal arches | No definition provided | Christopher Rauch | 2023.12.01 |
| trl | No definition provided | Ryan McGranaghan | 2023.04.16 |
| trl1 | No definition provided | Ryan McGranaghan | 2023.04.16 |
| trl2 | No definition provided | Ryan McGranaghan | 2023.04.16 |
| trl3 | No definition provided | Ryan McGranaghan | 2023.04.16 |
| trl4 | No definition provided | Ryan McGranaghan | 2023.04.16 |
| trl5 | No definition provided | Ryan McGranaghan | 2023.04.16 |
| trl6 | No definition provided | Ryan McGranaghan | 2023.04.16 |