/ Dictionary / Index M milliary: Meaning and Definition of Find definitions for: mil•li•ar•y Pronunciation: (mil'ē-er"ē), [key] — adj. of, pertaining to, or designating the ancient Roman mile of a thousand paces. marking a mile. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. milliard millibar Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language