- The period of time covering the physical formation and development of the earth, especially the period prior to human history.地质时期：地球物质形成和发展的时期，尤指人类历史前的时期
- conquistadors
- Conrad
- Conroe
- cons
- cons.
- consanguineous
- consanguinities
- consanguinity
- conscience
- conscience clause
- conscience money
- consciences
- conscientious
- conscientious objector
- conscionable
- conscious
- consciouses
- consciousness
- consciousnesses
- consciousness-raising
- conscript
- conscripted
- conscripting
- conscription
- conscriptions