Simple Definition of catalyst
: a substance that causes a chemical reaction to happen more quickly
: a person or event that quickly causes change or action
Full Definition of catalyst
1 : a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible
2 : an agent that provokes or speeds significant change or action
Examples of catalyst
The bombing attack was the catalyst for war.
She was proud to be a catalyst for reform in the government.
First Known Use of catalyst
Medical Definition of catalyst
: a substance (as an enzyme) that enables a chemical reaction to proceed under different conditions (as at a lower temperature) than otherwise possible
Seen and Heard
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