Ŏc-tēn'nĭ-al, a.
a. [Lat. octennis, from octo, eight, and annus, year.] 1. Happening every eighth year. 2. Lasting eight years.
a. [Lat. octennis, from octo, eight, and annus, year.] 1. Happening every eighth year. 2. Lasting eight years.