Breadcrumb Home > Dictionary > Index C color-key: Meaning and Definition of Find definitions for: col•or-key Pronunciation: (kul'ur-kē"), [key] — -keyed, -key•ing. color-code. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. colorize colorless ✖ Related Content Daily Word Quiz: derogate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language