- Catholic
- catholicise
- Catholicism
- catholicize
- cation
catkin
- catlike
- catnap
- catsup
- cattiness
- cattish
- cattle
- cattle cake
- catty
- catty-corner
- CATV
- CATV analyzer
- CATV head station
- CATV system
- Cauchy distribution
- caucus
- caudal
- Cauer filter
- caul
- cauldron
- cauliflower
- caulk
- caulking
- causal
- causal sentence
- causative

