/ Dictionary / Index M melanoblast: Meaning and Definition of Find definitions for: me•lan•o•blast Pronunciation: (mu-lan'u-blast", mel'u-nu-), [key] — n. Biol. an undifferentiated cell that develops into a melanophore or melanocyte. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: melanoblast (Thesaurus) melano- melanocyte Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language