noun
indoleacetic acid; IAA
A plant hormone of the auxin class; technical term used in biology and agriculture.
インドール酢酸は植物の成長を促進するホルモンです。
Indoleacetic acid is a hormone that promotes plant growth.
オーキシン is the general class of plant hormones; インドール酢酸 is the most common naturally occurring auxin.
From English 'indole' + 'acetic acid', adapted into Japanese as インドール酢酸.