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

/ ˌɪndəʊləˈsiːtɪk; -ˈsɛtɪk /

noun

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

Word History and Origins

Origin of indoleacetic acid¹

First recorded in 1885–90; indole + acetic