| radiologue | radiographer |
| Radiolésion | Radioactive damage |
| Radiometre | Radiometers |
| Radiometre de Dicke | Dicke radiometers |
| Radiomètre de Dicke | Dicke radiometer |
| radionucléide | radionuclide |
| radiophare | radio beacon |
| Radiophonique | Radio |
| radioprotection | radiation protection |
| Radiorepérage | Radio orientation |
| Radios francophones disponibles sur Internet | List of Internet stations |
| Radiosité | Radiosity |
| Radiosource discrete | Discrete radio sources |
| Radiosource discrète | Discrete radio source |
| Radiosource extragalactique | Extragalactic radio source |
| Radiosource quasi stellaire | Quasi stellar radio source |
| Radiotelevisione svizzera di lingua italiana | Radiotelevisione Svizzera di lingua Italiana |
| Radiotelevisión Andaluza | Radiotelevisión Andaluza |
| radiothérapie | radiotherapy |
| Radiotélescope | Radio telescope |
| Radiotélescope de Dwingeloo | Dwingeloo Radio Observatory |
| radiotélégramme | aerogramme |
