What is the meaning of Octennial?

(a.) Happening every eighth year; also, lasting a period of eight years.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). octennial. Retrieved September 21, 2026, from http://smartdefine.org/octennial/definitions/2038289
ChicagoWebster's. 2011. "octennial" http://smartdefine.org/octennial/definitions/2038289 (accessed September 21, 2026).
HarvardWebster's 2011, octennial, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/octennial/definitions/2038289>.
MLAWebster's. "octennial" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/octennial/definitions/2038289>