| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Orebroite-VIII | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ore-deposits | No definition provided | Christopher Rauch | 2023.12.01 |
| Ore dressing | No definition provided | Christopher Rauch | 2023.12.01 |
| Ore-dressing | No definition provided | Christopher Rauch | 2023.12.01 |
| Oregonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Oregon question | No definition provided | Christopher Rauch | 2023.12.01 |
| Ores | No definition provided | Christopher Rauch | 2023.12.01 |
| Ores--Sam-, pling and estimation | No definition provided | Christopher Rauch | 2023.12.01 |
| Ores--Sampling and estimation | No definition provided | Christopher Rauch | 2023.12.01 |
| Ore treatment | No definition provided | Christopher Rauch | 2023.12.01 |
| Organ | No definition provided | Christopher Rauch | 2023.12.01 |
| Organ--Bibl | No definition provided | Christopher Rauch | 2023.12.01 |
| Organ-builders | No definition provided | Christopher Rauch | 2023.12.01 |
| Organ--Construction | No definition provided | Christopher Rauch | 2023.12.01 |
| Organic and biogenic geochemistry | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Organic chemistry | No definition provided | Christopher Rauch | 2023.12.01 |
| organic compound | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Organic cryosol | An organic soil having a surface layer containing more than 17% organic carbon by weight, with permafrost within 1 meter (3.3 feet) below the surface. | GCW Glossary | 2023.03.27 |
| Organic cryosol | An organic soil having a surface layer containing more than 17% organic carbon by weight, with permafrost within 1 m below the surface. | GCW Glossary | 2023.03.27 |
| organic loading | No definition provided | Ryan McGranaghan | 2023.04.16 |