| Chitosan | chitosan |
| Chinesen | Chinese |
| Chitral | Chitral |
| Chinesin | Chinese |
| Chinolin | quinoline |
| Chinolon | quinolone |
| Chiromant | cheiromantist chiromancer palmist palmister |
| Chitin | chitin |
| Cytosin | cytosine |
| Chasan | hazzan |
| Chickasaw | Chickasaw |
| Chigong | qigong |
| Chinidin | quinidine |
| Chipsatz | chipset |
| Mchitarjan | Mkhitaryan |
| Chiasma | chiasm crossing over |
| Chicorée | chicory |
| Chiffrat | ciphertext cyphertext |
| Chilenin | Chilean |
| Chimära | Chimera |