Definition of quadrant noun from the Oxford Advanced Learner's Dictionary

     

    quadrant

     noun
    noun
    BrE BrE//ˈkwɒdrənt//
     
    ; NAmE NAmE//ˈkwɑːdrənt//
     
     
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  1. 1(geometry) a quarter of a circle or of its circumference (= the distance around it)
  2. 2an instrument for measuring angles, especially to check your position at sea or to look at stars
  3. Word Origin late Middle English (denoting the astronomical instrument): from Latin quadrans, quadrant- ‘quarter’, from quattuor ‘four’.
See the Oxford Advanced American Dictionary entry: quadrant