| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Ojibwa Indians | No definition provided | Christopher Rauch | 2023.12.01 |
| Ojuelaite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Oka Indians | No definition provided | Christopher Rauch | 2023.12.01 |
| Okanoganite (Y) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Okapi | No definition provided | Christopher Rauch | 2023.12.01 |
| Okayamalite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Okechobee, Battle of, 1837 | No definition provided | Christopher Rauch | 2023.12.01 |
| O-kee-pa | No definition provided | Christopher Rauch | 2023.12.01 |
| O-kee-pa (Religious ceremony) | No definition provided | Christopher Rauch | 2023.12.01 |
| Okenite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Okhotskite (Mg) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Okhotskite (Mn++) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Oki-nagan language | No definition provided | Christopher Rauch | 2023.12.01 |
| Okra | No definition provided | Christopher Rauch | 2023.12.01 |
| Olacineae | No definition provided | Christopher Rauch | 2023.12.01 |
| old | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Old age | No definition provided | Christopher Rauch | 2023.12.01 |
| Old age--Diseases | No definition provided | Christopher Rauch | 2023.12.01 |
| Old age pensions | No definition provided | Christopher Rauch | 2023.12.01 |
| Old age pensions--Bibl | No definition provided | Christopher Rauch | 2023.12.01 |