| Cyclopentan | cyclopentane |
| Cycloheptan | cycloheptane |
| Cyclobutan | cyclobutane |
| Cyclohexan | cyclohexane |
| Cyclopropan | cyclopropane |
| Cyclodextrin | cyclodextrin |
| Cycloalkan | cycloalkane |
| Cyclohexanol | cyclohexanol Cyclohexyl Alcohol Naxol hexahydrophenol hydrophenol hydroxycyclohexane |
| Cyclone | Cyclone |
| Cellophan | cellophane |
| Nitropenta | pentaerythritol tetranitrate |
| Pentan | pentane |
| Löwentanz | lion dance |
| momentan | at the moment currently current |
| cyclisieren | cyclize |
| Clownin | clowness |
| Xylophon | xylophone |
| Zellophan | cellophane |
| Zyklopenmauer | cyclopean wall |
| Tropenband | tropical band |