| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Orthite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthoantigorite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthobrannerite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthochamosite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthochevkinite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthochromatic photography | No definition provided | Christopher Rauch | 2023.12.01 |
| Orthochrysotile | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthoclase | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthoenstatite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthoepy | No definition provided | Christopher Rauch | 2023.12.01 |
| Orthoericssonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthoferrosilite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| OrthogonalCoordinate | No definition provided | Ryan McGranaghan | 2023.04.16 |
| OrthogonalCoordinate | No definition provided | Ryan McGranaghan | 2023.04.16 |
| orthogonal function | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthogonal surfaces | No definition provided | Christopher Rauch | 2023.12.01 |
| OrthographicProjectionCoordinateSystem | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthography | No definition provided | Christopher Rauch | 2023.12.01 |
| Orthojoaquinite (Ce) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Orthojoaquinite (La) | No definition provided | Ryan McGranaghan | 2023.04.16 |