Definition of indoleacetic acid in English:

indoleacetic acid

Syllabification: in·dole·a·ce·tic ac·id
Pronunciation: /ˌindōləˈsētik, -ˈsetik


  • A compound that is an acetic acid derivative of indole, especially one found as a natural growth hormone (auxin) in plants.
    • Chemical formula: C8H6(CH3COOH)N; seven isomers; auxin is indole-3-acetic acid
    More example sentences
    • The plant hormone auxin (indoleacetic acid) plays a role in specifying the pattern of root cells, and mutations affecting its localization lead to root defects.
    • In addition, various combinations of the following hormones were also added: naphthylacetic acid, 3 - indoleacetic acid, with 6-benzylaminopurine or kinetin.
    • A bacterial substance known as indoleacetic acid may play a part in sprout inhibition.

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