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

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

catalyst

noun cat·a·lyst \ˈkat-əl-əst\   (Medical Dictionary)

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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