quinquennial

 
Pronunciation: /kwɪŋˈkwɛnɪəl/

adjective

  • recurring every five years: they conducted quinquennial reviews
  • lasting for or relating to a period of five years.

Derivatives

quinquennially

adverb

Origin:

late 15th century (in the sense 'lasting five years'): from Latin quinquennis (from quinque 'five' + annus 'year') + -al