| Oxytonum | oxytone |
| oxyton | oxytone |
| Oxytonon | oxytone |
| Oxygenium | oxygen |
| oxytonirt | oxytonize |
| Oxytocin | oxytocin |
| Oxydul | monoxide |
| Oxygen | oxygen |
| oxytoniert | oxytonize |
| oxytonisch | oxytone |
| Oxymoron | oxymoron |
| Zytosom | cytosome |
| Zytozym | cytozyme |
| Bartonium | Bartonian |
| Metonym | metonym |
| Santonium | Santonian |
| Titonium | Tithonian |
| Tonem | toneme |
| Tortonium | Tortonian |
| Ökoton | ecotone |