/ Dictionary / Index O ordinate: Meaning and Definition of Find definitions for: or•di•nate Pronunciation: (ôr'dn-it", -āt"), [key] (in plane Cartesian coordinates) the y-coordinate of a point: its distance from the x-axis measured parallel to the y-axis. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ordinate (Thesaurus) ordinary wave ordination Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language