Con*hy"drine(? ), n. [Conium + hydrate.] (Chem.) A vegetable alkaloid found with conine in the poison hemlock (Conium maculatum). It is a white crystalline substance, C8H17NO, easily convertible into conine.
Co*ni"a(? ), n. [NL. See Conium.] (Chem.) Same as Conine.
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.
2. Of or pertaining to a cone; as,
(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. --
(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.
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Fri 14th December 2018