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3 definitions found
 for Conical projection
From The Collaborative International Dictionary of English v.0.48 :

  Projection \Pro*jec"tion\, n. [L. projectio: cf. F. projection.]
     [1913 Webster]
     1. The act of throwing or shooting forward.
        [1913 Webster]
  
     2. A jutting out; also, a part jutting out, as of a building;
        an extension beyond something else.
        [1913 Webster]
  
     3. The act of scheming or planning; also, that which is
        planned; contrivance; design; plan. --Davenant.
        [1913 Webster]
  
     4. (Persp.) The representation of something; delineation;
        plan; especially, the representation of any object on a
        perspective plane, or such a delineation as would result
        were the chief points of the object thrown forward upon
        the plane, each in the direction of a line drawn through
        it from a given point of sight, or central point; as, the
        projection of a sphere. The several kinds of projection
        differ according to the assumed point of sight and plane
        of projection in each.
        [1913 Webster]
  
     5. (Geog.) Any method of representing the surface of the
        earth upon a plane.
        [1913 Webster]
  
     Conical projection, a mode of representing the sphere, the
        spherical surface being projected upon the surface of a
        cone tangent to the sphere, the point of sight being at
        the center of the sphere.
  
     Cylindric projection, a mode of representing the sphere,
        the spherical surface being projected upon the surface of
        a cylinder touching the sphere, the point of sight being
        at the center of the sphere.
  
     Globular, Gnomonic, Orthographic, projection,etc. See
        under Globular, Gnomonic, etc.
  
     Mercator's projection, a mode of representing the sphere in
        which the meridians are drawn parallel to each other, and
        the parallels of latitude are straight lines whose
        distance from each other increases with their distance
        from the equator, so that at all places the degrees of
        latitude and longitude have to each other the same ratio
        as on the sphere itself.
  
     Oblique projection, a projection made by parallel lines
        drawn from every point of a figure and meeting the plane
        of projection obliquely.
  
     Polar projection, a projection of the sphere in which the
        point of sight is at the center, and the plane of
        projection passes through one of the polar circles.
  
     Powder of projection (Alchemy.), a certain powder cast into
        a crucible or other vessel containing prepared metal or
        other matter which is to be thereby transmuted into gold.
        
  
     Projection of a point on a plane (Descriptive Geom.), the
        foot of a perpendicular to the plane drawn through the
        point.
  
     Projection of a straight line of a plane, the straight line
        of the plane connecting the feet of the perpendiculars let
        fall from the extremities of the given line.
        [1913 Webster]
  
     Syn: See Protuberance.
          [1913 Webster]
          [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Conic \Con"ic\, Conical \Con"ic*al\, a. [Gr. ?: cf. F. conique.
     See Cone.]
     1. Having the form of, or resembling, a geometrical cone;
        round and tapering to a point, or gradually lessening in
        circumference; as, a conic or conical figure; a conical
        vessel.
        [1913 Webster]
  
     2. Of or pertaining to a cone; as, conic sections.
        [1913 Webster]
  
     Conic section (Geom.), a curved line formed by the
        intersection of the surface of a right cone and a plane.
        The conic sections are the parabola, ellipse, and
        hyperbola. The right lines and the circle which result
        from certain positions of the plane are sometimes, though
        not generally included.
  
     Conic sections, that branch of geometry which treats of the
        parabola, ellipse, and hyperbola.
  
     Conical pendulum. See Pendulum.
  
     Conical projection, a method of delineating the surface of
        a sphere upon a plane surface as if projected upon the
        surface of a cone; -- much used by makers of maps in
        Europe.
  
     Conical surface (Geom.), a surface described by a right
        line moving along any curve and always passing through a
        fixed point that is not in the plane of that curve.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  conical projection
      n 1: a map projection of the globe onto a cone with its point
           over one of the earth's poles [syn: conic projection,
           conical projection]

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