indoleacetic acid

in·​dole·​ace·​tic acid | \ ˌin-(ˌ)dō-lə-ˈsē-tik- How to pronounce indoleacetic acid (audio) \

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, in the meaning defined above

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The first known use of indoleacetic acid was in 1937

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Cite this Entry

“Indoleacetic acid.” Dictionary, Merriam-Webster, Accessed 3 Jun. 2020.

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indoleacetic acid

in·​dole·​ace·​tic acid | \ ˈin-ˌdōl-ə-ˌsēt-ik- How to pronounce indoleacetic acid (audio) \

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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