noun Etymology: nicotinic acid + 1-in Date: 1942 an acid C 6 H 5 NO 2 of the vitamin B complex found widely in animals and plants and used especially against pellagra
NIACIN
Meaning of NIACIN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012