| Term | Definition | Contributor | Modified |
|---|---|---|---|
| K subgiant stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| K subgiant stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| K supergiant stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| K supergiant stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| K supergiant stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| K supergiant stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ktenasite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Kuannersuite (Ce) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| ku band | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Kudriavite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Kudurru inscriptions | No definition provided | Christopher Rauch | 2023.12.01 |
| Kufic coins | No definition provided | Christopher Rauch | 2023.12.01 |
| Kuhland cattle | No definition provided | Christopher Rauch | 2023.12.01 |
| Kuiper belt | A region of the Solar System extending roughly from the orbit of Neptune, or 30 astronomical units (AU), to 50 AU from the Sun that contains many small icy bodies. The Kuiper belt is now considered to be the source of the short-period comets. | Ryan McGranaghan | 2023.04.16 |
| Kuiper belt objects | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Kukharenkoite (Ce) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Kukharenkoite (La) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Kuki-Chin languages | No definition provided | Christopher Rauch | 2023.12.01 |
| Kukisvumite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ku-Klux klan | No definition provided | Christopher Rauch | 2023.12.01 |