vigintennial

adj

vigintennial

adj

Etymology From viginti- (“twenty”) + -ennial (“yearly”), from Latin vīgintī (“twenty”) and -enniālis, from annus (“year”) + -is (“forming compound adjectives”) + -ālis (“-al: forming adjectives”).

Rare Synonym of vicennial, occurring every twenty years.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.