| Radionuklid | radionuclide |
| radioaktiv | radioactive |
| Radiochemie | radiochemistry |
| Radiolarie | radiolarian |
| Radikand | radicand |
| Radiobutton | radio button |
| Radiologie | radiology |
| Radiologin | radiologist |
| Radiowelle | radio wave radio station |
| Rationale | rationale |
| rational | rational |
| rationell | economic |
| Nuklid | nuclide |
| Radierung | etching |
| Radikale | radical |
| Radikaler | radical |
| Radiographie | radiography |
| Radioisotop | radioisotope |
| Radiologe | radiologist |
| Radiotaste | radio button |