/ Dictionary / Index M mezzo piano: Meaning and Definition of Find definitions for: mez'zo pia'no Pronunciation: (pē-ä'nō), [key] — Music. Music. somewhat louder than piano but softer than forte; moderately soft. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mezzo forte mezzo-relievo Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language