a colorless, thick, oily, flammable, highly explosive, slightly water-soluble liquid, C 3 H 5 N 3 O 9 , prepared from glycerol with nitric and sulfuric acids: used chiefly as a constituent of dynamite and other explosives, in rocket propellants, and in medicine as a vasodilator in the treatment of angina pectoris.
nitroglycerin ni·tro·glyc·er·in or ni·tro·glyc·er·ine (nī'trō-glĭs'ər-ĭn, -trə-) n. A thick, pale yellow liquid that is explosive on concussion or exposure to sudden heat, used as a vasodilator in medicine.
(nī'trō-glĭs'ər-ĭn) A thick, pale-yellow, explosive liquid formed by treating glycerin with nitric and sulfuric acids. It is used to make dynamite and in medicine to dilate blood vessels. Chemical formula:C3H5N3O9.