| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Roundhouses | No definition provided | Christopher Rauch | 2023.12.01 |
| Round towers | No definition provided | Christopher Rauch | 2023.12.01 |
| Round towers--Ireland | No definition provided | Christopher Rauch | 2023.12.01 |
| roundworm | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Roundworm | No definition provided | Christopher Rauch | 2023.12.01 |
| Rouseite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| rouse number | No definition provided | Ryan McGranaghan | 2023.04.16 |
| route | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Routes of trade | No definition provided | Christopher Rauch | 2023.12.01 |
| Routes of travel | No definition provided | Christopher Rauch | 2023.12.01 |
| Routhierite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rouvilleite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rouxelite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| rover | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rover | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rovers | No definition provided | Ryan McGranaghan | 2023.04.16 |
| row | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Roweite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Rowing | No definition provided | Christopher Rauch | 2023.12.01 |
| Rowlandite (Y) | No definition provided | Ryan McGranaghan | 2023.04.16 |