late 14c., "a quarter of a day, six hours," from Middle French quadrant, from Latin quadrantem (nominative quadrans) "fourth part," also the name of a coin worth a quarter of an as, noun use of present participle of quadrare "to make square; put in order, arrange, complete; run parallel, be exact," figuratively "to fit, suit, be proper," related to quadrus "a square," quattuor "four" (see four). The surveying instrument is first so called c. 1400, because it forms a quarter circle. Related: Quadrantal.
例文
1. A symbol appears in an upper quadrant of the screen.
1つの記号が画面上の1つの象限に表示されます。
2.One quadrant of a circle contains all possible values of Zxy.
円の4分の1には、存在する可能性のあるZxy値が含まれています。
3.The cells of the quadrant in turn become partitioned to from the eight-celled embryo.
四分体細胞は分裂して八細胞胚を形成する。
4.That 's right at the edge of the Burnham Quadrant ，right？
ポヘム象限領域の端にありますよね？
5.Physical examination is unremarkable except for tenderness over the left lower quadrant .