noun Date: 1960 either of two isomers of an acid C 20 H 28 O 2 derived from vitamin A and used in the treatment of acne:, tretinoin , isotretinoin
RETINOIC ACID
Meaning of RETINOIC ACID in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012