| Cycloheptan | cycloheptane |
| Cyclohexan | cyclohexane |
| Cyclopentan | cyclopentane |
| Cyclobutan | cyclobutane |
| Cyclodextrin | cyclodextrin |
| Cycloalkan | cycloalkane |
| Cyclohexanol | cyclohexanol Cyclohexyl Alcohol Naxol hexahydrophenol hydrophenol hydroxycyclohexane |
| Cyclopropan | cyclopropane |
| Cyclone | Cyclone |
| Heptan | heptane |
| cyclisieren | cyclize |
| flöhen | delouse |
| lohen | flame tan |
| hepta- | hepta- |
| Lepton | lepton |
| Löwentanz | lion dance |
| Coltan | coltan |
| Diplotän | diplotene |
| Pachytän | pachytene |
| Schaitan | demon devil shaitan |