| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Unitas fratrum | No definition provided | Christopher Rauch | 2023.12.01 |
| unit defined by product | No definition provided | Ryan McGranaghan | 2023.04.16 |
| unit derived by raising to power | No definition provided | Ryan McGranaghan | 2023.04.16 |
| unit derived by scaling | No definition provided | Ryan McGranaghan | 2023.04.16 |
| unit derived by shifting | No definition provided | Ryan McGranaghan | 2023.04.16 |
| United American Free will Baptists | No definition provided | Christopher Rauch | 2023.12.01 |
| United brethren | No definition provided | Christopher Rauch | 2023.12.01 |
| United brethren in Christ | No definition provided | Christopher Rauch | 2023.12.01 |
| United empire loyalists | No definition provided | Christopher Rauch | 2023.12.01 |
| United Presbyterian church of North America | No definition provided | Christopher Rauch | 2023.12.01 |
| United States | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Aliens | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Altitudes | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Annexations | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Antiquities | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Appropriations and expenditures | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Archives | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Area | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Army | No definition provided | Christopher Rauch | 2023.12.01 |
| United States--Army--Ambulances | No definition provided | Christopher Rauch | 2023.12.01 |