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auxin

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noun aux·in \ˈȯk-sən\

Definition of auxin

  1. 1 :  any of various usually acidic organic substances that promote cell elongation in plant shoots and usually regulate other growth processes (as root initiation): as a :  indoleacetic acid b :  any of various synthetic substances (as 2,4-D) resembling indoleacetic acid in activity and used especially in research and agriculture

  2. 2 :  plant hormone

aux·in·icplay \ȯk-ˈsi-nik\ adjective


Origin of auxin

International Scientific Vocabulary, from Greek auxein to increase — more at eke


First Known Use: 1933


Medical Dictionary

auxin

play
noun aux·in \ˈȯk-sən\

Medical Definition of auxin

  1. :  an organic substance that is able in low concentrations to promote elongation of plant shoots and usually to control other specific growth effects; broadly :  plant hormone




Learn More about auxin

  1. Medical Dictionary: Definition of "auxin" Britannica.com: Encyclopedia article about "auxin"


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