/ Dictionary / Index M microporous: Meaning and Definition of Find definitions for: mi•cro•po•rous Pronunciation: (mī"kru-pôr'us, -pōr'-), [key] — adj. composed of or having extremely small pores. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. micropore microprint Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language