- An imaginary sphere of infinite extent with the earth at its center on which the stars, planets, and other heavenly bodies appear to be located.天球：一个虚构的以地球为中心的球体，在其上可看到恒星、行星和其他天体的位置
- comptie
- comp time
- Compton
- Compton-Burnett
- Compton Community College
- Compton effect
- Compton scattering
- comptroller
- comptrollers
- compulsion
- compulsions
- compulsive
- compulsives
- compulsories
- compulsory
- compunction
- compunctions
- compurgation
- compurgations
- computation
- computations
- compute
- computed
- computer
- computer