quinquennis, e, adj. [quinque annus],
of five years or five years old : filia, Plaut. Poen. prol. 85: Olympias, celebrated every fifth year , quinquennial , Ov. P. 4, 6, 5: vinum, Hor. S. 2, 8, 47: oleae, id. ib. 2, 2, 57: juvenis, Col. 7, 3, 6. — Plur. as subst.: quinquennĭa , ōrum, n., for quinquennālĭa , ium, games celebrated every fifth year , Stat. S. 5, 3, 113.