VASODILATOR By N., Sam M.S. - 4 noun. any drug or other substance which acts to widen the girth of blood vessels, usually by calming smooth muscle in the arterial walls. VASODILATOR: "Vasodilators are often utilized for the remediation of high blood pressure and angina pectoris." Related Psychology Terms EMOTION (General) ARTERIOSCLEROTIC BRAIN DISORDER AMYL NITRITE LYSERGIC ACID (LSD) ELECTROSHOCK THERAPY (Elec- troconvulsive Therapy; EST, ECT) ESTHETICS PHENTOLAMINE ADRENAL GLANDS VASOMOTOR PAPAVERINE Cite this page: N., Sam M.S., "VASODILATOR," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/vasodilator/ (accessed July 3, 2022).