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| Eight cone | 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] |
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