Dictionary

quinquennial

adjective quin·quen·ni·al \kwin-ˈkwe-nē-əl, kwiŋ-\

Definition of QUINQUENNIAL

1
:  consisting of or lasting for five years
2
:  occurring or being done every five years
quinquennial noun
quin·quen·ni·al·ly \-nē-ə-lē\ adverb
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First Known Use of QUINQUENNIAL

15th century

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