/ Dictionary / Index O Omayyad: Meaning and Definition of Find definitions for: O•may•yad Pronunciation: (ō-mī'ad), [key] — pl. -yads, -ya•des a member of the dynasty that ruled at Damascusa.d.661–750, claiming descent from Omayya, cousin of the grandfather of Muhammad the Prophet. a member of the dynasty of caliphs that ruled in southern Spain,a.d.756–1031: related to the Damascus dynasty. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: omayyad (Thesaurus) omasum OMB Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language