| Nukleon | nucleon |
| Nukleus | (cell) nucleus cytoblast nucleus |
| nuklear | nuclear |
| Küklein | chick |
| Nuklease | nuclease |
| Nukleosom | nucleosome |
| Nukleotid | nucleotide |
| Nuklid | nuclide |
| klein | small little uncapitalized |
| Napoleon | Napoleon |
| Leon | Leon |
| Neon | neon |
| nukleophil | nucleophilic |
| Euklid | Euclid |
| Gaukler | bateleur |
| Klein- | minuscule |
| Klerf | Clervaux |
| Völklein | tribe |
| Hakler | hooker |
| Klebe | adhesive |