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1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Quadrat \Quad"rat\, n. [F. quadrat, cadrat. See Quadrate.]
      1. (Print.) A block of type metal lower than the letters, --
         used in spacing and in blank lines. [Abbrev. quad.]
         [1913 Webster]
      2. An old instrument used for taking altitudes; -- called
         also geometrical square, and line of shadows.
         [1913 Webster]