| Radioteleskop | radio telescope |
| Radiotelescopie | radiotelescopy |
| Teleskop | telescope |
| Radioisotop | radioisotope |
| Radiotaste | radio button |
| Radiometer | radiometer |
| Radiotechnik | radio engineering |
| Radiotelegrafie | radiotelegraphy |
| Radiowecker | clock radio |
| Radiowelle | radio wave radio station |
| Autotelefon | car phone |
| Anomaloskop | anomaloscope |
| Radierer | eraser |
| Radikale | radical |
| Radikaler | radical |
| Radikalinski | firebrand |
| Radio Eriwan | Radio Yerevan |
| Radiochemie | radiochemistry |
| Radiolarie | radiolarian |
| Radiologe | radiologist |