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sexennial |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Sexennial \Sex*en"ni*al\, a. [L. sexennium a period of six years, sexennis of six years; sex six + annus a year. See {Six}, and {Annual}.] Lasting six years, or happening once in six years. -- n. A sexennial event.