/ Dictionary / Index O omen: Meaning and Definition of Find definitions for: o•men Pronunciation: (ō'mun), [key] — n. anything perceived or happening that is believed to portend a good or evil event or circumstance in the future; portent. a prognostic. prophetic significance; presage: a bird of ill omen. —v.t. to be an omen of; portend. to divine, as if from omens. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: omen (Thesaurus) omelet omentum Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language