the insoluble problem of constructing, by the methods of Euclidean geometry, a square equal in area to a given circle.
[kwod-ruh l] /ˈkwɒd rəl/ noun 1. a square stone, brick, or tile.
/kwɒˈdrɛlə/ noun 1. (Austral) four nominated horseraces in which the punter bets on selecting the four winners
[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 […]
[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