noun Date: 1937 a crystalline plant hormone C 10 H 9 NO 2 that is a naturally occurring auxin promoting growth and rooting of plants
INDOLEACETIC ACID
Meaning of INDOLEACETIC ACID in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012