/ Dictionary / Index M micrograph: Meaning and Definition of Find definitions for: mi•cro•graph Pronunciation: (mī'kru-graf", -gräf"), [key] — n. an instrument for executing extremely minute writing or engraving. a photograph taken through a microscope or a drawing of an object as seen through a microscope. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microgram micrographia Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language