/ Dictionary / Index M metallophone: Meaning and Definition of Find definitions for: me•tal•lo•phone Pronunciation: (mu-tal'u-fōn"), [key] — n. any musical instrument consisting of a graduated series of metal bars that may either be struck by hammers operated manually or played with a keyboard. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metallo-organic metallotherapy Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language