- cerebrate
- consult
- cite
- castrate
- course
- contrariwise
- constraint
- chemical bond
- crash
- consideration
- chip
- copyright
- clutter
- cube
- casting
- control board
- coming
- champ
- chewing
- change of state
- coinage
- companion
- check bit
- confirmation
- condition
- checkout
- conjoin
- caparison
- cleat
- cement
- chop
- commutate
- cohesiveness
- connected
- couplet
- closed chain
- charm
- coupling
- clip art
- clue
- cue
- clew
- chump
- condemn
- chelicera
- chela
- coordinate axis
- cervical vertebra
- coalition
- carbon black