/ Dictionary / Index M microtomy: Meaning and Definition of Find definitions for: mi•crot•o•my Pronunciation: (mī-krot'u-mē), [key] — pl. -mies. the cutting of very thin sections with the microtome. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microtome microtone 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