[W/K] :: Spherical segment

  Spherical \Spher"ic*al\, Spheric \Spher"ic\, a. [L. sphaericus,
     Gr. ???: cf. F. sph['e]rique.]
     1. Having the form of a sphere; like a sphere; globular;
        orbicular; as, a spherical body.
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     2. Of or pertaining to a sphere.
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     3. Of or pertaining to the heavenly orbs, or to the sphere or
        spheres in which, according to ancient astronomy and
        astrology, they were set.
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              Knaves, thieves, and treachers by spherical
              predominance.                         --Shak.
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              Though the stars were suns, and overburned
              Their spheric limitations.            --Mrs.
                                                    Browning.
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     Spherical angle, Spherical coordinate, Spherical
     excess, etc. See under Angle, Coordinate, etc.
  
     Spherical geometry, that branch of geometry which treats of
        spherical magnitudes; the doctrine of the sphere,
        especially of the circles described on its surface.
  
     Spherical harmonic analysis. See under Harmonic, a.
  
     Spherical lune,portion of the surface of a sphere included
        between two great semicircles having a common diameter.
  
     Spherical opening, the magnitude of a solid angle. It is
        measured by the portion within the solid angle of the
        surface of any sphere whose center is the angular point.
        
  
     Spherical polygon,portion of the surface of a sphere
        bounded by the arcs of three or more great circles.
  
     Spherical projection, the projection of the circles of the
        sphere upon a plane. See Projection.
  
     Spherical sector. See under Sector.
  
     Spherical segment, the segment of a sphere. See under
        Segment.
  
     Spherical triangle,re on the surface of a sphere, bounded
        by the arcs of three great circles which intersect each
        other.
  
     Spherical trigonometry. See Trigonometry.
        [1913 Webster] -- Spher"ic*al*ly, adv. --
        Spher"ic*al*ness, n.
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