noun Date: 1936 a crystalline acid C 12 H 13 NO 2 similar to indoleacetic acid in its effects on plants
INDOLEBUTYRIC ACID
Meaning of INDOLEBUTYRIC ACID in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012