/ Dictionary / Index M micromicro-: Meaning and Definition of Find definitions for: micromicro- Pronunciation: [key] pico-. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. micrometry micromicrofarad Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language