/ Dictionary / Index A antivenin: Meaning and Definition of Find definitions for: an•ti•ven•in Pronunciation: (an"tē-ven'in, an"tī-), [key] — n. an antitoxin present in the blood of an animal following repeated injections of venom. the antitoxic serum obtained from such blood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: antivenin (Thesaurus) antiutopia antivitamin Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language