/ Dictionary / Index M microtone: Meaning and Definition of Find definitions for: mi•cro•tone Pronunciation: (mī'kru-tōn"), [key] — n. any musical interval smaller than a semitone, specifically, a quarter tone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microtomy microtopography Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language