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catalyst

play
noun cat·a·lyst \ˈka-tə-ləst\

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

Source: Merriam-Webster's Learner's Dictionary

Full Definition of catalyst

  1. 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. 2 :  an agent that provokes or speeds significant change or action

Examples of catalyst in a sentence

  1. The bombing attack was the catalyst for war.

  2. She was proud to be a catalyst for reform in the government.



1902

First Known Use of catalyst

1902

Other Chemical Engineering Terms


Medical Dictionary

catalyst

play
noun cat·a·lyst \ˈkat-əl-əst\

Medical Definition of catalyst

  1. :  a substance (as an enzyme) that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible





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