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quintan
quinte
quintessence
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quintile
quintillion
quintuple
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quinquennium

quin·quen·ni·um [ kwing kwénnee əm ] (plural quin·quen·ni·ums or quin·quen·ni·a [ kwing kwénnee ə ])


noun 
Definition:
 
five year period: a period of five years

[Early 17th century. < Latin,< quinque "five" + annus "year"]

quin·quen·ni·al adjective
quin·quen·ni·al·ly adverb
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