Dictionary Results for catalyst

1. catalyst - noun

· (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected

Synonym(s): accelerator

Hypernym(s): activator

Antonym(s): anticatalyst

2. catalyst - noun

· something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"

Hypernym(s): causal_agent, cause, causal_agency

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