catalyze ca·ta·lyze UK/ˈkætəˌlaɪz/ US/ˈkætʌˌlaɪz/ uncommon verb 1. change by catalysis or cause to catalyze Synonymscatalyse Related words Word family catalyst Broader terms change state WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.