/ Dictionary / Index M microcassette: Meaning and Definition of Find definitions for: mi•cro•cas•sette Pronunciation: (mī'krō-ku-set", -ka-), [key] — n. a very small audio tape cassette smaller than a minicassette, for use with a pocket-size tape recorder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microcapsule microcephalic Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language