auxin

== English == === Etymology === From Ancient Greek αὐξάνω (auxánō, “to grow”) +‎ -in. === Pronunciation === === Noun === auxin (countable and uncountable, plural auxins) (botany, biochemistry) A class of plant growth substance (often called phytohormones or plant hormones) which play an essential role in coordination of many growth and behavioral processes in the plant life cycle. ==== Derived terms ==== ==== Translations ====