/ Dictionary / Index M microampere: Meaning and Definition of Find definitions for: mi•cro•am•pere Pronunciation: (mī"krō-am'pēr, -am-pēr'), [key] — n. Elect. a unit of electric current, equal to one millionth of an ampere. Symbol: &mgr;A Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microammeter microanalysis Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language