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quinquennium

play
noun quin·quen·ni·um \kwin-ˈkwe-nē-əm, kwiŋ-\

Definition of quinquennium

plural

quinquenniums

or

quinquennia

play \kwin-ˈkwe-nē-ə, kwiŋ-\

  1. :  a period of five years

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Origin and Etymology of quinquennium

Latin, from quinque five + annus year — more at five, annual

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