What is the meaning of Triennially?

(adv.) Once in three years.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). triennially. Retrieved September 26, 2026, from http://smartdefine.org/triennially/definitions/2074617
ChicagoWebster's. 2011. "triennially" http://smartdefine.org/triennially/definitions/2074617 (accessed September 26, 2026).
HarvardWebster's 2011, triennially, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/triennially/definitions/2074617>.
MLAWebster's. "triennially" 28 May 2011. Web. 26 September 2026. <http://smartdefine.org/triennially/definitions/2074617>