/ Dictionary / Index C chromato-: Meaning and Definition of Find definitions for: chromato- Pronunciation: [key] a combining form meaning “color,” used in the formation of compound words in this sense and in the specialized sense of “chromatin”: chromatophore; chromatolysis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chromatism chromatogram Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language