indoleacetic acid

[ in-dohl-uh-see-tik, -set-ik, in- ]
/ ˈɪn doʊl əˈsi tɪk, -ˈsɛt ɪk, ˌɪn- /

noun Biochemistry.

a crystalline, water-insoluble powder, C10H9NO2, a natural plant hormone, used especially for stimulating growth and root formation in plant cutting.

Origin of indoleacetic acid

First recorded in 1885–90; indole + acetic

British Dictionary definitions for indoleacetic acid

indoleacetic acid
/ (ˌɪndəʊləˈsiːtɪk, -ˈsɛtɪk) /

noun

an auxin that causes elongation of the cells of plant stems. Formula: C 10 H 9 NO 2 Abbreviation: IAA

Medical definitions for indoleacetic acid

indoleacetic acid
[ ĭndō-lə-sē′tĭk ]

n.

A plant hormone that stimulates growth.