/ Dictionary / Index M metachromatism: Meaning and Definition of Find definitions for: met•a•chro•ma•tism Pronunciation: (met"u-krō'mu-tiz"um), [key] — n. change of color, esp. that due to variation in the temperature of a body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metacercaria metacinnabar Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language