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ONADquadrennial

quadrennial

Flag: gbEnglishOxford New American Dictionary

quadrennial /kwäˈdrenēəl, kwɑˈdrɛniəl /
adjective recurring every four years:
the quadrennial world championships.
lasting for or relating to a period of four years.
– DERIVATIVES
quadrennially /kwäˈdrenēəlē, kwɑˈdrɛniəli / adverb
– ORIGIN mid 17th century : from quadrennium + -al.