- chelaA pincer-like claw of a crustacean or arachnid.
- keloidA hard raised growth of scar tissue at the site of an injury.
- cheletropicDescribing a pericyclic addition reaction across the terminal atoms of a fully conjugated system in which two new single bonds are formed with a single atom of the reactant.
- cheliceraEither of the prehensile claws found on the proboscis of chelicerates (horseshoe crabs, sea spiders and arachnids).
- cheliferpseudoscorpion