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indoleacetic acid

[ in-dohl-uh-see-tik, -set-ik, in- ]

noun

, Biochemistry.
  1. a crystalline, water-insoluble powder, C 10 H 9 NO 2 , a natural plant hormone, used especially for stimulating growth and root formation in plant cutting.


indoleacetic acid

/ -ˈsɛtɪk; ˌɪndəʊləˈsiːtɪk /

noun

  1. an auxin that causes elongation of the cells of plant stems. Formula: C 10 H 9 NO 2 IAA
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of indoleacetic acid1

First recorded in 1885–90; indole + acetic

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indoleindolebutyric acid