Dictionary

indoleacetic acid

noun in·dole·ace·tic acid \ˌin-(ˌ)dō-lə-ˈsē-tik-\

Definition of INDOLEACETIC ACID

:  a crystalline plant hormone C10H9NO2 that is a naturally occurring auxin promoting growth and rooting of plants

First Known Use of INDOLEACETIC ACID

1937

indoleacetic acid

noun in·dole·ace·tic acid \ˈin-ˌdōl-ə-ˌsēt-ik-\   (Medical Dictionary)

Medical Definition of INDOLEACETIC ACID

:  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

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