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A surface of revolution formed by rotating a segment of a line around another line that intersects the first line.
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A solid of revolution formed by rotating a triangle around one of its altitudes.
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A space formed by taking the direct product of a given space with a closed interval and identifying all of one end to a point.
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Anything shaped like a cone.
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The fruit of a conifer.
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A cone-shaped flower head of various plants, such as banksias and proteas.
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An ice cream cone.
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A traffic cone
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A unit of volume, applied solely to marijuana and only while it is in a smokable state; roughly 1.5 cubic centimetres, depending on use.
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Any of the small cone-shaped structures in the retina.
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The bowl piece on a bong.
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The process of smoking cannabis in a bong.
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A cone-shaped cannabis joint.
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A passenger on a cruise ship (so-called by employees after traffic cones, from the need to navigate around them)
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An object V together with an arrow going from V to each object of a diagram such that for any arrow A in the diagram, the pair of arrows from V which subtend A also commute with it. (Then V can be said to be the cone’s vertex and the diagram which the cone subtends can be said to be its base.)
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A cone is an object (the apex) and a natural transformation from a constant functor (whose image is the apex of the cone and its identity morphism) to a diagram functor. Its components are projections from the apex to the objects of the diagram and it has a “naturality triangle” for each morphism in the diagram. (A “naturality triangle” is just a naturality square which is degenerate at its apex side.)
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A shell of the genus Conus, having a conical form.
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A set of formal languages with certain desirable closure properties, in particular those of the regular languages, the context-free languages and the recursively enumerable languages.