| Methionin | methionine |
| Methodik | methodology method |
| Melatonin | melatonin |
| Metformin | metformin |
| Methadon | methadone |
| Method | Methodius |
| Methodistin | Methodist |
| Metonym | metonym |
| Metronym | matronymic |
| Metzgerin | slaughterer |
| Metzlerin | slaughterer |
| Metabolit | metabolite |
| Meteorit | meteorite |
| Methan | methane |
| Methanol | methanol |
| Methode | method way |
| Methodist | Methodist |
| Metronom | metronome |
| Ethin | ethyne |
| Ethnie | ethnic group |