| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Yushkinite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Yutchi Indians | No definition provided | Christopher Rauch | 2023.12.01 |
| Yvonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| z | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zabuyelite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zacatecas, Mexico, Battle of, 1872 | No definition provided | Christopher Rauch | 2023.12.01 |
| Zaccagnaite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zadruga | No definition provided | Christopher Rauch | 2023.12.01 |
| Zaherite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zairite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zajacite (Ce) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zakharovite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zalesiite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zanazziite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| zanclean | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Z Andromedae stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Z Andromedae stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Z Andromedae stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Z Andromedae stars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Zante currants | No definition provided | Christopher Rauch | 2023.12.01 |