auxin Hear it!

auxin definition

aux·in (ôk′sin)

noun

a plant hormone, esp. indoleacetic acid, produced in the fruits, seeds, leaves, or stem tips, to promote longitudinal growth and to control bud growth, root formation, leaf abscission, etc.: also produced synthetically

Etymology: < Gr auxein, to increase (see wax) + -in

Related Forms:

  • auxinic aux·in′ic (ôks in′ik) adjective

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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