| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Rhodplumsite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rhoenite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| rhombic | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rhomboclase | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rhone River--Power utilisation | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rhopalocera | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhopobota vacciniana | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhubarb | No definition provided | Christopher Rauch | 2023.12.01 |
| rhuddanian | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rhus radicans | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhus toxicodendron | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhus venenata | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhus vernix | No definition provided | Christopher Rauch | 2023.12.01 |
| rhyacian | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rhyme | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhynchocephalia | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhynchophorus cruentatus | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhynchophorus palmarum | No definition provided | Christopher Rauch | 2023.12.01 |
| Rhynchoprion penetrans | No definition provided | Christopher Rauch | 2023.12.01 |