/ Dictionary / Index M melanotropin: Meaning and Definition of Find definitions for: me•lan•o•tro•pin Pronunciation: (mu-lan"u-trō'pin, mel"u-nu-), [key] — n. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. melanotic melatonin Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language