/nik'euh tin"euh muyd', -mid, -tee"neuh-/ , n. Biochem.
a colorless, crystalline, water-soluble solid, C 6 H 6 N 2 O, the amide of nicotinic acid, and a component of the vitamin-B complex, found in meat, liver, fish, whole wheat, and eggs: used in medicine chiefly as an agent for preventing or treating human pellagra or animal black tongue. Also called niacinamide, nicotinic acid amide .
[ 1890-95; NICOTINE + AMIDE ]