dioptric curve

1 definition found

dioptric curve - Collaborative International Dictionary of English v.0.48 :

  Dioptric \Di*op"tric\, Dioptrical \Di*op"tric*al\, a. [Gr. ?
     belonging to the use of the ?; ? = dia` through + the root of
     ? I shall see: cf. F. dioptrique.]
     Of or pertaining to dioptrics; assisting vision by means of
     the refraction of light; refractive; as, the dioptric system;
     a dioptric glass or telescope. "Dioptrical principles."
     --Nichol.
     [1913 Webster]
  
     Dioptric curve (Geom.), a Cartesian oval. See under
        Cartesian.
        [1913 Webster]