| Röntgenapparat | X-ray |
| Polizeiapparat | police force |
| Rasierapparat | shaver razor |
| Fotoapparat | camera |
| Golgi-Apparat | Golgi apparatus Golgi Golgi body Golgi complex |
| Röntgenröhre | X-ray tube |
| Röntgenaufnahme | radiograph roentgenogram |
| Röntgenstrahl | X-ray |
| Fernsehapparat | television |
| Heftapparat | stapler |
| Hörapparat | hearing aid |
| Radioapparat | radio receiver |
| Röntgenblick | X-ray vision |
| Röntgenium | roentgenium |
| Roentgenium | roentgenium |
| Röntgenographie | radiography |
| Röntgenologe | radiologist |
| Röntgenologie | radiology |
| Röntgenologin | radiologist |
| Röntgen | X-ray |
| röntgen | X-ray |