Crossword clues for octennial
The Collaborative International Dictionary
Octennial
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.
Wiktionary
octennial
a. 1 Occurring every eight years. 2 Lasting or taking eight years.