auxin

noun
aux·in | \ˈȯk-sən \

Definition of auxin 

1 : any of various usually acidic organic substances that promote cell elongation in plant shoots and usually regulate other growth processes (such as root initiation): such as

a : indoleacetic acid

b : any of various synthetic substances (such as 2,4-D) resembling indoleacetic acid in activity and used especially in research and agriculture

Other Words from auxin

auxinic \ȯk-ˈsi-nik \ adjective

First Known Use of auxin

1933, in the meaning defined at sense 1

History and Etymology for auxin

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

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Time Traveler for auxin

The first known use of auxin was in 1933

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More Definitions for auxin

auxin

noun
aux·in | \ˈȯk-sən \

Medical Definition of auxin 

: 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

More from Merriam-Webster on auxin

Britannica.com: Encyclopedia article about auxin

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