English dictionary



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English noun: catalyst

1. catalyst (substance) (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected


Synonymsaccelerator


Broader (hypernym)activator


Narrower (hyponym)biocatalyst, enzyme, platinum black


Domain categorychemical science, chemistry


Antonymsanticatalyst

2. catalyst (person) something that causes an important event to happen


SamplesThe invasion acted as a catalyst to unite the country.


Broader (hypernym)causal agency, causal agent, cause









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