/ Dictionary / Index A anticatalase: Meaning and Definition of Find definitions for: an•ti•cat•a•lase Pronunciation: (an"tē-kat'l-ās", -āz", an"tī-), [key] — n. Biochem. a substance that inhibits the enzymatic action of a catalase. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. anticarious anticatalyst Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language