英文词源
- quadrant (n.)
- 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.
中文词源
quadr-,四分之一，-ant,形容词后缀。引申词义四分之一圆，象限等。
该词的英语词源请访问趣词词源英文版：quadrant 词源，quadrant 含义。
