| Isoleucin | isoleucine |
| Leucin | leucine |
| Ziseleurin | engraver |
| Isobutan | isobutane |
| Isobuten | isobutene |
| Isomerie | isomerism |
| Isometrie | isometry |
| Isolation | insulation isolation |
| isolieren | insulate isolate |
| Solanin | solanine |
| Solei | pickled egg |
| Solistin | soloist |
| Soldatin | soldier |
| solenn | solemn |
| Coelestin | celestine |
| Proletin | Philistine |
| Tirolerin | Tyrolean |
| Moleskin | moleskin |
| Aleutin | Aleut |
| Seleukia | Seleucia |