| Term | Definition | Contributor | Modified |
|---|---|---|---|
| xylene | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Xylography | No definition provided | Christopher Rauch | 2023.12.01 |
| Xyloretinite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| y | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Yabim language | No definition provided | Christopher Rauch | 2023.12.01 |
| Yacht-building | No definition provided | Christopher Rauch | 2023.12.01 |
| Yacht racing | No definition provided | Christopher Rauch | 2023.12.01 |
| Yacht racing, etc | No definition provided | Christopher Rauch | 2023.12.01 |
| Yachts and yachting | No definition provided | Christopher Rauch | 2023.12.01 |
| Yafsoanite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Yagatai language | No definition provided | Christopher Rauch | 2023.12.01 |
| Yagiite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Yahgan language | No definition provided | Christopher Rauch | 2023.12.01 |
| Yakama Indians | No definition provided | Christopher Rauch | 2023.12.01 |
| Yakama language | No definition provided | Christopher Rauch | 2023.12.01 |
| Yakhontovite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Yakima Indians | No definition provided | Christopher Rauch | 2023.12.01 |
| Yakima language | No definition provided | Christopher Rauch | 2023.12.01 |
| Yakovenchukite (Y) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Yakut language | No definition provided | Christopher Rauch | 2023.12.01 |