Quadrennial
[kwo-dren-ee-uh l] /kwɒˈdrɛn i əl/
adjective
1.
occurring every four years:
a quadrennial festival.
2.
of or lasting for four years:
a quadrennial period.
noun
3.
an event occurring every four years, as an anniversary or its celebration.
/kwɒˈdrɛnɪəl/
adjective
1.
occurring every four years
2.
relating to or lasting four years
noun
3.
a period of four years
adj.
1650s, “lasting four years;” as “happening once every four years,” 1701; from quadri- + ending from biennial, etc. Correct formation would be quadriennial (cf. Latin quadriennium “period of four years”). As a noun from 1640s. Related: Quadrennially.
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