reactant
a person or thing that reacts.
Also called interactant. Chemistry. any substance that undergoes a chemical change in a given reaction.
Origin of reactant
1Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for reactant
/ (rɪˈæktənt) /
a substance that participates in a chemical reaction, esp a substance that is present at the start of the reaction: Compare product (def. 4)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for reactant
[ rē-ăk′tənt ]
A substance participating in a chemical reaction, especially one present at the start of the reaction.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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