/ Dictionary / Index M melanism: Meaning and Definition of Find definitions for: mel•a•nism Pronunciation: (mel'u-niz"um), [key] — n. the condition in human beings of having a high amount of melanin granules in the skin, hair, and eyes. the condition in which an unusually high concentration of melanin occurs in the skin, plumage, or pelage of an animal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: melanism (Thesaurus) Melanippus melanite Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language