/ Dictionary / Index K katalyst: Meaning and Definition of Find definitions for: kat•a•lyst Pronunciation: (kat'l-ist), [key] — n. Chem. catalyst. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. katalysis katalyze Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language