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.