CONIC

conic|conical. Conic, or Conical, a. in form of or like a cone

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{ Con″ic (?), Con″ic‐al (?) }, a. [[Gr. �: cf. F. conique. See Cone.]] 1. 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.
2. 2. Of or pertaining to a cone; as, conic sections.
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.