CARD 1 OF 2 Which word fits this meaning?Something that brings about or accelerates a change.nounReveal word and examplescatalystThe exhibition became a catalyst for the neighborhood's revival.Dictionary practice example.A single question acted as a catalyst for the debate.From Vocabulary Studio 10: Canonize to catalyst.Full dictionary entryHow did you do before revealing the answer?Needs another lookI remembered itReveal the answer first, then make a self-check. Another word may fit the definition; compare with the target word. This is separate from scored quiz accuracy.