catflap.org Online Dictionary Query

  Cone \Cone\ (k[=o]n?), n. [L. conus cone (in sense 1), Gr.
     kw^nos; akin to Skr. [,c]ana whetstone, L. cuneus wedge, and
     prob. to E. hone. See Hone, n.]
     1. (Geom.) A solid of the form described by the revolution of
        a right-angled triangle about one of the sides adjacent to
        the right angle; -- called also a right cone. More
        generally, any solid having a vertical point and bounded
        by a surface which is described by a straight line always
        passing through that vertical point; a solid having a
        circle for its base and tapering to a point or vertex.
        [1913 Webster]
  
     2. Anything shaped more or less like a mathematical cone; as,
        a volcanic cone, a collection of scori[ae] around the
        crater of a volcano, usually heaped up in a conical form.
        [1913 Webster]
  
              Now had Night measured with her shadowy cone
              Half way up hill this vast sublunar vault. --Milton.
        [1913 Webster]
  
     3. (Bot.) The fruit or strobile of the Conifer[ae], as of
        the pine, fir, cedar, and cypress. It is composed of woody
        scales, each one of which has one or two seeds at its
        base.
        [1913 Webster]
  
     4. (Zo["o]l.) A shell of the genus Conus, having a conical
        form.
        [1913 Webster]
  
     Cone of rays (Opt.), the pencil of rays of light which
        proceed from a radiant point to a given surface, as that
        of a lens, or conversely.
  
     Cone pulley. See in the Vocabulary.
  
     Oblique cone or Scalene cone, a cone of which the axis is
        inclined to the plane of its base.
  
     Eight cone. See Cone, 1.
        [1913 Webster]

  Cone \Cone\, n. [L. conus cone (in sense 1), Gr. ?; akin to Skr.
     [,c]ana whetstone, L. cuneus wedge, and prob. to E. hone. See
     Hone, n.]
     1. (Geom.) A solid of the form described by the revolution of
        a right-angled triangle about one of the sides adjacent to
        the right angle; -- called also a right cone. More
        generally, any solid having a vertical point and bounded
        by a surface which is described by a straight line always
        passing through that vertical point; a solid having a
        circle for its base and tapering to a point or vertex.
  
     2. Anything shaped more or less like a mathematical cone; as,
        a volcanic cone, a collection of scori[ae] around the
        crater of a volcano, usually heaped up in a conical form.
  
              Now had Night measured with her shadowy cone Half
              way up hill this vast sublunar vault. --Milton.
  
     3. (Bot.) The fruit or strobile of the Conifer[ae], as of
        the pine, fir, cedar, and cypress. It is composed of woody
        scales, each one of which has one or two seeds at its
        base.
  
     4. (Zo["o]l.) A shell of the genus Conus, having a conical
        form.
  
     Cone of rays (Opt.), the pencil of rays of light which
        proceed from a radiant point to a given surface, as that
        of a lens, or conversely.
  
     Cone pulley. See in the Vocabulary.
  
     Oblique or Scalene cone, a cone of which the axis is
        inclined to the plane of its base.
  
     Eight cone. See Cone, 1.

  cone of rays /kˈəʊn ɒv ɹˈeɪz/
  Strahlenbündel 
     Synonym: pencil of rays