/ Dictionary / Index C C. in C.: Meaning and Definition of Find definitions for: C. in C. Pronunciation: [key] Commander in Chief. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Cimon cinch Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language