- a solid whose surface is generated by a line passing through a fixed point and a fixed plane curve not containing the point, consisting of two equal sections joined at a vertex.
- a plane surface resembling the cross section of a solid cone.
- the more or less conical multiple fruit of the pine, fir, etc., consisting of overlapping or valvate scales bearing naked ovules or seeds; a strobile.
- a similar fruit, as in cycads or club mosses.
verb (used with object), coned, con·ing.
Origin of cone
Examples from the Web for coned
Contemporary Examples of coned
Several National Grid and ConEd trucks were on the scene by early morning.Residents in Red Hook, Brooklyn, Assess the Damage After Sandy
October 31, 2012
Despite fears that ConEd, the power company, would preemptively cut electricity, the lights stayed on.Irene Political Report Card
David A. Graham
August 29, 2011
Historical Examples of coned
A short reamer that is driven by fitting to a coned mandrel.
A tool having a coned point for marking the centres to work.
This spindle, which runs in two coned bearings, carries at its outer end a light Fig. 34.Wireless Transmission of Photographs
Marcus J. Martin
It runs in bearings which are split and are coned externally, fitting into correspondingly coned holes in the headstock.
The plate may be made of cast iron with hardened steel bushes to fit the coned holes.
- a geometric solid consisting of a plane base bounded by a closed curve, often a circle or an ellipse, every point of which is joined to a fixed point, the vertex, lying outside the plane of the base. A right circular cone has a vertex perpendicularly above or below the centre of a circular base. Volume of a cone: 1/3 π r ² h, where r is the radius of the base and h is the height of the cone
- a geometric surface formed by a line rotating about the vertex and connecting the peripheries of two closed plane bases, usually circular or elliptical, above and below the vertexSee also conic section
- the reproductive body of conifers and related plants, made up of overlapping scales, esp the mature female cone, whose scales each bear a seed
- a similar structure in horsetails, club mosses, etcTechnical name: strobilus
Word Origin for cone
1560s, from Middle French cone (16c.) or directly from Latin conus "a cone, peak of a helmet," from Greek konos "cone, spinning top, pine cone," perhaps from PIE root *ko- "to sharpen" (cf. Sanskrit sanah "whetstone," Latin catus "sharp," Old English han "stone").