Found 1 items, similar to octennially.
English → English (gcide) Definition: Octennially Octennial \Oc*ten"ni*al\, a. [L. octennium a period of eight years; octo eight + annus year.] Happening every eighth year; also, lasting a period of eight years. --Johnson. -- Oc*ten"ni*al*ly, adv. [1913 Webster]