indolebutyric acid Hear it!

indolebutyric acid definition

indole·bu·tyric acid (-byo̵̅o̅ tir′ik)

a plant hormone, CHNO, that promotes the growth of roots

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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