| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Ursa Minor dwarf spheroidal galaxy | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ursilite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ursulines | No definition provided | Christopher Rauch | 2023.12.01 |
| Ursulines in Canada | No definition provided | Christopher Rauch | 2023.12.01 |
| Ursulines in the U.S. | No definition provided | Christopher Rauch | 2023.12.01 |
| Uruguayan newspapers | No definition provided | Christopher Rauch | 2023.12.01 |
| Uruguayan newspapers--Bibl | No definition provided | Christopher Rauch | 2023.12.01 |
| Uruguayan periodicals | No definition provided | Christopher Rauch | 2023.12.01 |
| Uruguayan periodicals--Bibl | No definition provided | Christopher Rauch | 2023.12.01 |
| Uruguay--Hist | No definition provided | Christopher Rauch | 2023.12.01 |
| Uruguay--Hist.--1810-1830 | No definition provided | Christopher Rauch | 2023.12.01 |
| Uruguay--Hist.--1830- | No definition provided | Christopher Rauch | 2023.12.01 |
| Uruguay--Hist.--To 1810 | No definition provided | Christopher Rauch | 2023.12.01 |
| Urusite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Urusovite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Urvantsevite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Usages | No definition provided | Christopher Rauch | 2023.12.01 |
| U.S.--Army--Appointments and retirements | No definition provided | Christopher Rauch | 2023.12.01 |
| U.S.--Army--Artillery, Coast | No definition provided | Christopher Rauch | 2023.12.01 |
| U.S.--Army--Artillery, Field and mountain | No definition provided | Christopher Rauch | 2023.12.01 |