Dictionary

catalyst

noun cat·a·lyst \ˈka-tə-ləst\

: 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
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Examples of CATALYST

  1. The bombing attack was the catalyst for war.
  2. She was proud to be a catalyst for reform in the government.

First Known Use of CATALYST

1902

Other Chemical Engineering Terms

alkali, cation, decant, hygroscopic, isotope, oxidize, slurry, solute, viscous
Medical Dictionary

catalyst

noun cat·a·lyst \ˈkat-əl-əst\

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

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