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Word of the Day Tuesday, June 9, 2026

catalysts

/kætˈælstɪz/ noun · British & US
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What does catalysts mean?

noun

A substance that speeds up a chemical reaction without being used up in the process. In a broader sense, a person or thing that causes an event or change to happen.

Example

"The addition of a catalyst to the reaction mixture greatly increased its rate."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for catalysts

Antonyms of catalysts

Rhymes with catalysts

Etymologically related