quinquennial
Syllabification: (quin·quen·ni·al)
Pronunciation: /kwiNGˈkwenēəl/
Definition of quinquennial
adjective
Origin:
late 15th century (in the sense 'lasting five years'): from Latin quinquennis (from quinque 'five' + annus 'year') + -al
late 15th century (in the sense 'lasting five years'): from Latin quinquennis (from quinque 'five' + annus 'year') + -al