indoleacetic acid

indoleacetic acid
/in"dohl euh see"tik, -set"ik, in'-/, Biochem.
a crystalline, water-insoluble powder, C10H9NO2, a natural plant hormone, used esp. for stimulating growth and root formation in plant cutting. Also called beta-indoleacetic acid, heteroauxin.
[1885-90; INDOLE + ACETIC]

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Universalium. 2010.

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  • indoleacetic acid — in dole*a*cet ic ac id ([i^]n d[=o]l), n. (Chem., Bot.) A plant hormone ({C10H9NO2}) recognized as the principle growth regulator in higher plants; called also {heteroauxin}. Abbreviated {IAA}. Chemically it is 1H indole 3 acetic acid. [PJC] …   The Collaborative International Dictionary of English

  • indoleacetic acid — [in′dōl΄ə sēt′ik] n. a plant hormone, C10H9NO2, that promotes the growth of plants and roots …   English World dictionary

  • indoleacetic acid — in·dole·ace·tic acid in .dōl ə .sēt ik n a crystalline compound C10H9NO2 that is formed from tryptophan in plants and animals, is present in small amounts in normal urine, and acts as a growth hormone in plants called also heteroauxin …   Medical dictionary

  • indoleacetic acid — [ˌɪndəʊlə si:tɪk, sɛtɪk] noun Biochemistry a compound which is an acetic acid derivative of indole, especially one found as a natural growth hormone (auxin) in plants …   English new terms dictionary

  • indoleacetic acid — n. Biochem. any of the several isomeric acetic acid derivatives of indole, esp. one found as a natural growth hormone in plants. Usage: Abbr.: IAA. Etymology: INDOLE + ACETIC …   Useful english dictionary

  • indoleacetic acid — noun Date: 1937 a crystalline plant hormone C10H9NO2 that is a naturally occurring auxin promoting growth and rooting of plants …   New Collegiate Dictionary

  • indoleacetic acid — noun an auxin plant hormone, synthesized in leaves, that stimulates growth, especially in the presence of ethylene …   Wiktionary

  • indoleacetic acid — natural plant hormone that promotes growth …   English contemporary dictionary

  • indoleacetic acid — in′dole•a•ce′tic ac′id [[t]ˈɪn doʊl əˈsi tɪk, ˈsɛt ɪk, ˌɪn [/t]] n. biochem. a plant hormone, C10H9NO2, that promotes growth and root formation • Etymology: 1885–90 …   From formal English to slang

  • beta-indoleacetic acid — /bay teuh in dohl euh see tik, euh set ik/ or, esp. Brit., /bee /, Biochem. See indoleacetic acid. * * * …   Universalium

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