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inoh

catalyst

/ˈkætəlɪst/ · /ˈkæt.ɪ.lɪst/

Meaning 1

A substance that speeds up a chemical reaction.

“The scientist added a catalyst to speed the reaction.”
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Illustration of catalyst: A substance that speeds up a chemical reaction.

Meaning 2

something that causes an event to happen

“The new policy acted as a catalyst for change.”
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Illustration of catalyst: something that causes an event to happen