reagent Hear it!

reagent definition

re·agent (rē ā′jənt)

noun

Chem. a substance used to detect or measure another substance or to convert one substance into another by means of the reaction which it causes

Etymology: re- + agent

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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