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variant spelling of catalyze (q.v.); for spelling, see -ize. Related: Catalysed; catalysing.
1890, back-formation from catalysis on model of analyze/analysis. Related: Catalyzed; catalyzing. Probably influenced by French catalyser (1842).
catalyze cat·a·lyze (kāt'l-īz')v. cat·a·lyzed, cat·a·lyz·ing, cat·a·lyz·es To modify, especially to increase, the rate of a chemical reaction by catalysis.