/ Dictionary / Index M metric space: Meaning and Definition of Find definitions for: met'ric space" Pronunciation: [key] a space with a metric defined on it. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metrics metric system Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language