Breadcrumb Home > Dictionary > Index X x in: Meaning and Definition of Find definitions for: x in Pronunciation: [key] — Stock Exchange. Stock Exchange. ex interest. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ximenes Xing ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language