/ Dictionary / Index C coordinate system: Meaning and Definition of Find definitions for: coor'dinate sys"tem Pronunciation: [key] — Math. Math. any method that uses numbers to represent a point, line, or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coordinate paper coordinating conjunction Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language