<p><strong>Noun</strong></p><ul><li>Chemistry, Pharmacology.</li><li>A colorless, thick, oily, flammable, highly explosive, slightly water-soluble liquid, C₃H₅N₃O₉, prepared from glycerol with nitric and sulfuric acids.</li><li>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.</li></ul>