| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Rockslide | Several landslides generated by the Great Alaskan Earthquake, Good Friday 1964, fell onto the surface of the so-named glacierin the Chugach Mountains, Alaska. | GCW Glossary | 2023.03.27 |
| rock slope failure | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rocks: physical properties | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rocks, Sedimentary | No definition provided | Christopher Rauch | 2023.12.01 |
| Rocks, Siliceous | No definition provided | Christopher Rauch | 2023.12.01 |
| Rock-tombs | No definition provided | Christopher Rauch | 2023.12.01 |
| rocky | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rocky Mountain goat | No definition provided | Christopher Rauch | 2023.12.01 |
| Rocky Mountain locust | No definition provided | Christopher Rauch | 2023.12.01 |
| rocky pit floor crater | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rococo architecture | No definition provided | Christopher Rauch | 2023.12.01 |
| Rococo decoration and ornament | No definition provided | Christopher Rauch | 2023.12.01 |
| Rocroi, Battle of, 1643 | No definition provided | Christopher Rauch | 2023.12.01 |
| Rodalquilarite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Roden tia | No definition provided | Christopher Rauch | 2023.12.01 |
| Rodentia | No definition provided | Christopher Rauch | 2023.12.01 |
| Rodentia, Fossil | No definition provided | Christopher Rauch | 2023.12.01 |
| Rodent ulcer | No definition provided | Christopher Rauch | 2023.12.01 |
| Rodgers (Ship) | No definition provided | Christopher Rauch | 2023.12.01 |
| Rodney’s victory, April, 1782 | No definition provided | Christopher Rauch | 2023.12.01 |