[kwo-dren-ee-uh l] /kwɒˈdrɛn i əl/
occurring every four years:
a quadrennial festival.
of or lasting for four years:
a quadrennial period.
an event occurring every four years, as an anniversary or its celebration.
occurring every four years
relating to or lasting four years
a period of four years
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.
[kwo-dren-ee-uh m] /kwɒˈdrɛn i əm/ noun, plural quadrenniums, quadrennia [kwo-dren-ee-uh] /kwɒˈdrɛn i ə/ (Show IPA) 1. a period of four years. /kwɒˈdrɛnɪəm/ noun (pl) -niums, -nia (-nɪə) 1. a period of four years
1. a combining form meaning “four,” used in the formation of compound words: quadrilateral. combining form 1. four: quadrilateral, quadrilingual, quadrisyllabic before vowels quad- (before -p- often quadru-, from an older form in Latin), word-forming element meaning “four, four times, having four, consisting of four,” from Latin quadri-, related to quattor “four” (see four). quadri- […]
[kwod-ree-ad] /ˈkwɒd riˌæd/ noun 1. a group of four, especially a group of four persons with an interest or task in common.
quadribasic quad·ri·ba·sic (kwŏd’rə-bā’sĭk) adj. Of or relating to an acid having four hydrogen atoms that are replaceable by atoms or radicals that are basic.