/ Dictionary / Index M microstethoscope: Meaning and Definition of Find definitions for: mi•cro•steth•o•scope Pronunciation: (mī"kru-steth'u-skōp"), [key] — n. Med. a stethoscope containing an apparatus that greatly amplifies the sounds heard. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microstate microstress Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language