| radioaktiver Zerfall | radioactive decay |
| radioaktiver Abfall | radioactive waste |
| radioaktiver Staub | fallout |
| radioaktiver Niederschlag | fallout |
| Radioaktivität | radioactivity |
| radioaktiv | radioactive |
| Diktiergerät | dictation machine |
| abhängiger Fall | oblique case |
| Radiointerview | radio interview |
| radotieren | drivel |
| aktiver Vulkan | active volcano |
| redaktionell | editorial |
| abakteriell | abacterial |
| antibakteriell | antibacterial |
| defektives Verb | defective verb |
| distinktives Merkmal | distinctive feature |
| Adoptivbruder | adoptive brother |
| Adoptiveltern | adoptive parents |
| regulative Regel | regulative rule |
| dritter Fall | dative case |