/ Dictionary / Index M microbar: Meaning and Definition of Find definitions for: mi•cro•bar Pronunciation: (mī'kru-bär"), [key] — n. a centimeter-gram-second unit of pressure, equal to one millionth of a bar; one dyne per square centimeter. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: microbar (Thesaurus) microbalance microbarogram Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language