Breadcrumb Home > Dictionary > Index X Xmas: Meaning and Definition of Find definitions for: Xmas Pronunciation: (kris'mus or, often, eks'mus), [key] Christmas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: xmas (Thesaurus) X-linked Xn. ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language