Dictionary
nic'otin'ic ac'id
Biochem.
a crystalline acid, C
6H
5NO
2, that is a component of the vitamin-B complex, found in fresh meat, yeast, etc., produced by the oxidation of nicotine, and used in the prevention and treatment of pellagra. Also called
niacin, vitamin B3. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.