/ Dictionary / Index C color circle: Meaning and Definition of Find definitions for: col'or cir"cle Pronunciation: [key] a circular diagram displaying the colors of the spectrum as a sequence of segments of the circle and showing complementary colors opposite each other. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. colorcaster color code Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language