indoleacetic acid


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Related to indoleacetic acid: abscisic acid, gibberellin

indoleacetic acid

(ĭn′dō-lə-sē′tĭk)
n.
A plant hormone, C10H9NO2, that stimulates growth. It is the principal naturally occurring auxin.

indoleacetic acid

[in′dōləsē′tik, -əset′ik]
a major terminal metabolite of tryptophan that is present in very small amounts in normal urine and excreted in elevated quantities by patients with carcinoid tumors. It is measured as 5-hydroxyindoleacetic acid.
References in periodicals archive ?
The most popular root-promoting hormones are the auxins indoleacetic acid (IAA), indolebutyric acid (IBA), and napthaleneacetic acid (NAA).
A number of natural substances do same as auxin activity, but indoleacetic acid (IAA) is the first extracted and well-known growth regulator [5].
Production of phytohormones, such as the indoleacetic acid (IAA), is possibly the main mechanism of plant growth promotion by rhizobia.
Comparative studies on tobacco pith and sweet potato root isoperoxidases in relation to injury, indoleacetic acid, and ethylene effects.