/ Dictionary / Index O omniscient: Meaning and Definition of Find definitions for: om•nis•cient Pronunciation: (om-nish'unt), [key] — adj. having complete or unlimited knowledge, awareness, or understanding; perceiving all things. —n. an omniscient being. God. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: omniscient (Thesaurus) omniscience omnium-gatherum Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language