| radiobalise | radio beacon |
| radiocassette | boom box |
| Radiochirurgie | Radiosurgery |
| radiodiffusion | radio |
| Radiodétection | Radio detection |
| radiofréquence | radio frequency |
| Radiogalaxie | Radio galaxy |
| Radiogoniomètre | Radio-goniometer |
| Radiogoniométrie | Direction finding |
| Radiogoniométrie sportive | Amateur Radio Direction Finding |
| radiogramme | radiogram |
| radiographie | X-ray |
| radiographier | X-ray |
