quadrennial UK /kwɒˈdɹɛn.i.əl/US /kwɑˈdɹɛni.əl/adjective 2noun 1forms 1 adjective2 •Happening every four years.The quadrennial election of Chief Magistrate has passed off with less than the usual excitement. — 1852 •Lasting for four years. noun1 •A four-year period, a quadrennium. formsquadrennials
