| Diagnostik | diagnostics |
| Diagnose | diagnosis diagnostics |
| Dianetik | dianetics |
| diagnostisch | diagnostic diagnostically |
| Dialektik | dialectic |
| Diapositiv | diapositive |
| Agnosie | agnosia |
| Agnostiker | agnostic |
| Digestif | digestif |
| Linguistik | linguistics |
| Pianistin | pianist |
| digestiv | digestive |
| Diakonin | deaconess |
| Diakonissin | deaconess |
| Diäresis | diaeresis |
| Mediävistik | medieval studies |
| Diagonale | diagonal slant |
| diagonal | diagonal |
| Magnetit | magnetite |
| Magnesit | magnesite |