substituent Hear it!

substituent definition

sub·stitu·ent (sub stic̸h′o̵̅o̅ ənt)

noun

Chem. an atom or group of atoms replacing another atom or group in a compound

Etymology: < L substituens, prp. of substituere: see substitute

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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