| Radio Eriwan | Radio Yerevan |
| Radiolarie | radiolarian |
| Radlerin | cyclist |
| Radiologin | radiologist |
| radieren | delete erase to rub out drypoint etch |
| radizieren | square root |
| Radierer | eraser |
| Radierung | etching |
| Radiochemie | radiochemistry |
| radiologisch | radiological |
| rädern | break on the wheel |
| Radfahrerin | biker |
| Radiation | adaptive radiation |
| Radieschen | radish |
| Radioapparat | radio receiver |
| Radiobutton | radio button |
| Radiologie | radiology |
| Radiometer | radiometer |
| Radioopazität | radiodensity |
| Radioröhre | thermionic valve |