in·dole·ace·tic acid noun \ˌin-(ˌ)dō-lə-ˈsē-tik-\
: a crystalline plant hormone C10H9NO2 that is a naturally occurring auxin promoting growth and rooting of plants
First Known Use of INDOLEACETIC ACID
in·dole·ace·tic acid noun \ˈin-ˌdōl-ə-ˌsēt-ik-\ (Medical Dictionary)
: 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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