/ Dictionary / Index N nauseant: Meaning and Definition of Find definitions for: nau•se•ant Pronunciation: (nô'zē-unt, -zhē-, -sē-, -shē-), [key] — Med. Med. —adj. producing nausea. —n. a nauseant agent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nauseant (Thesaurus) nausea nauseate Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language