/ Dictionary / Index A anticatalyst: Meaning and Definition of Find definitions for: an•ti•cat•a•lyst Pronunciation: (an"tē-kat'l-ist, an"tī-), [key] — n. Chem. an inhibitor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: anticatalyst (Thesaurus) anticatalase anticathexis Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language