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A cone (from the Greek ?????, Latin conu) is a basic geometrical shape; see cone (geometry)
Cone (geometry)

A cone is a dimension geometric shape that tapers smoothly from a flat, round base to a point called the apex or vertex. More precisely, it is the solid figure bounded by a plane base and the surface formed by the locus of all straight line segments joining the apex to the perimeter of the base....
.

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Povcone
A cone (from the Greek ?????, Latin conu) is a basic geometrical shape; see cone (geometry)
Cone (geometry)

A cone is a dimension geometric shape that tapers smoothly from a flat, round base to a point called the apex or vertex. More precisely, it is the solid figure bounded by a plane base and the surface formed by the locus of all straight line segments joining the apex to the perimeter of the base....
.

Cone may also refer to:
  • Conifer cone
    Conifer cone

    A cone is an organ on plants in the division Pinophyta that contains the plant sexuality structures. The familiar woody cone is the female cone, which produces seeds....
    , a seed-bearing organ on conifer plants
  • Cone cell
    Cone cell

    Cone cells, or cones, are photoreceptor cells in the retina of the eye which function best in relatively bright light. The cone cells gradually become sparser towards the periphery of the retina....
    , in anatomy, a type of light-sensitive cell found along with rods in the retina of the eye
  • Cone snail
    Cone snail

    The cone snails or cone shells, sometimes simply known as "cones", , are a taxonomic family of approximately 500 medium-sized to large, sophisticated predatory sea snails, marine gastropod mollusks....
    , a carnivorous molluscs of the family Conidae
  • Elizabethan collar
    Elizabethan collar

    An Elizabethan collar or space collar is a protective medical device worn by an animal, usually a cat or dog. Shaped like a truncated cone, its purpose is to prevent the animal from biting or Wound licking at its body or scratching at its head or neck while wounds or injuries Wound healing....
    , a cone-shaped collar worn by pets
  • Ice cream cone
    Ice cream cone

    An ice cream cone or cornet is a cone-shaped pastry, usually made of a Wafer similar in texture to a waffle, in which ice cream is served, allowing it to be eaten without a bowl or spoon....
    , an edible container in which ice cream is served, shaped like an inverted cone open at its top
  • Pyrometric cone
    Pyrometric cone

    Pyrometric cones are pyrometric devices that are used to gauge heatwork during the firing of ceramic materials. The cones, often used in sets of three as shown in the illustration, are positioned in a kiln with the wares to be fired and provide a visual indication of when the wares have reached a required state of maturity, a combination o...
    , in ceramic manufacture, a contolled mixture of minerals used to gauge the extent of firing
  • Traffic cone
    Traffic cone

    Traffic cones, also called toddlers, road cones, safety cones, construction cones, pylons, or Witches' Hats, are usually Cone -shaped markers that are placed on roads or footpaths to temporarily redirect traffic in a safe manner....
    , a brightly colored cone-shaped plastic object commonly used as a temporary traffic barrier or warning sign
  • Skid cone
    Skid cone

    In forestry a skid cone is a device that prevents logs from being stopped by roots, stumps or residual trees while being harvested. It also protects standing valuable trees along the path from being damaged....
    , a cone like object place before a log in forestry
  • Volcanic cone
    Volcanic cone

    Volcanic cones are among the simplest volcano formations in the world. They are built by fragments thrown up from a volcanic vent, piling up around the vent in the shape of a cone with a central crater....
    , a mountain formed by material ejected from a volcanic vent
  • A type of optical fiber
    Optical fiber

    An optical fiber is a glass or plastic fiber that carries light along its length. Fiber optics is the overlap of applied science and engineering concerned with the design and application of optical fibers....
     that tapers almost to a point
  • The part of a loudspeaker
    Loudspeaker

    A loudspeaker, speaker, or speaker system is an electroacoustical transducer that converts an electricity signal processing to sound....
     that moves the air, creating sound waves constantly
  • A colloquial Australian term for cannabis
    Cannabis

    Cannabis is a genus of flowering plants that includes three putative species, Cannabis sativa L., Cannabis indica Lam., and Cannabis ruderalis Janisch....
    , most commonly a bong
    Bong

    A bong, also commonly known as a water pipe, is a smoking device, generally used to smoke cannabis , tobacco, or other substances. The construction of a bong and its principle of action is similar to that of the hookah, which is also called "water pipe ." A bong may be constructed from any air- and water-tight vessel by adding a bowl...
     load or 'bowl' of cannabis
  • In cartography, a type of projection; see map projection
    Map projection

    A map projection is any method of representing the surface of a sphere or other shape on a Plane . Map projections are necessary for creating maps....
  • A heat scale used when firing ceramics: see Pyrometric cone
    Pyrometric cone

    Pyrometric cones are pyrometric devices that are used to gauge heatwork during the firing of ceramic materials. The cones, often used in sets of three as shown in the illustration, are positioned in a kiln with the wares to be fired and provide a visual indication of when the wares have reached a required state of maturity, a combination o...
     Pottery
    Pottery

    Pottery is the ceramic ware made by potters. Major types of pottery include earthenware, stoneware, and porcelain. The places where such wares are made are called potteries....


As a proper name:

  • Cone (software)
    Cone (software)

    Cone is a text-based e-mail client and news client for Unix-like operating systems. It is developed by the Courier Mail Server developers. Its name stands for "console newsreader and emailer"....
    , a text-based e-mail and news client for Unix-like operating systems
  • David Cone
    David Cone

    David Brian Cone is a former Major League Baseball pitcher who pitched for the New York Mets, Toronto Blue Jays, Kansas City Royals, New York Yankees and Boston Red Sox....
    , retired baseball pitcher
  • Fairfax M. Cone
    Fairfax M. Cone

    Fairfax Mastick Cone or Fax Cone, was an United States businessperson, advertising corporate officer and the former director of the American Association of Advertising Agencies....
    , an American advertising executive
  • Frederick P. Cone (1871-1948), governor of Florida
  • Jason McCaslin
    Jason McCaslin

    Jason Paul McCaslin , better known as "Cone", is the bass guitarist and backing vocalist of Canada punk rock band Sum 41. He joined the band as the last member of its current lineup in February 1999, replacing Mark Spicoluk....
    , nicknamed Cone, bassist for the Canadian band Sum 41
  • John Cone
    John Cone

    John Cone is an American professional wrestling Referee currently working for World Wrestling Entertainment . ...
    , professional wrestling referee
  • the Cone sisters: Claribel Cone (1864–1929) and Etta Cone (1870–1949), collectors and socialites


In mathematics:

  • Cone (geometry)
    Cone (geometry)

    A cone is a dimension geometric shape that tapers smoothly from a flat, round base to a point called the apex or vertex. More precisely, it is the solid figure bounded by a plane base and the surface formed by the locus of all straight line segments joining the apex to the perimeter of the base....
    , a basic solid shape
  • Cone (category theory)
    Cone (category theory)

    In category theory, a branch of mathematics, the cone of a functor is an abstract notion used to define the limit of that functor. Cones make other appearances in category theory as well....
    , a family of morphisms resembling a geometric cone
  • Cone (formal languages)
    Cone (formal languages)

    In formal language theory, a cone is a set of formal language that has some desirable closure properties enjoyed by some well-known sets of languages, in particular by the families of regular language , context-free language and the recursive language....
    , an abstract family of languages that contains the languages with a regular grammar
  • Cone (linear algebra)
    Cone (linear algebra)

    In linear algebra, a cone is a subset of a vector space that is closed under multiplication by positive scalar . In other words, a subset C of a real vector space V is a cone if and only if ?x belongs to C for any x in C and any positive scalar ? of V ....
    , a subset of vector space closed under positive scaling
  • Cone (topology)
    Cone (topology)

    In topology, especially algebraic topology, the cone CX of a topological space X is the quotient space:of the product topology of X with the unit interval I = [0, 1]....
     of a set X, namely the union of all line segments connecting a fixed point to points of X
  • Cone graph, in graph theory, a graph with a universal vertex
  • Conic section
    Conic section

    File:Conic sections with plane.svgIn mathematics, a conic section is a curve obtained by intersecting a cone with a plane . A conic section is therefore a restriction of a quadric surface to the plane ....
    , any curve obtained by cutting a conical surface by an arbitrary plane
  • Conical surface
    Conical surface

    In geometry, a conical surface is the unbounded surface formed by the union of all the straight line that pass through a fixed point — the apex or vertex — and any point of some fixed space curve — the directrix — that does not contain the apex....
    , generated by a moving line with one fixed point
  • Convex cone
    Convex cone

    In linear algebra, a convex cone is a subset of a vector space that is closure under linear combinations with positive coefficients....
    , a special case of the above that is closed under convex combinations
  • Mapping cone (homological algebra)
    Mapping cone (homological algebra)

    In homological algebra, the mapping cone is a construction on a map of chain complexes inspired by the mapping cone. In the theory of triangulated categories it is a kind of combined kernel and cokernel: if the chain complexes take their terms in an abelian category, so that we can talk about cohomology, then the cone of a map f being a...
     of a map of chain complexes
  • Projective cone
    Projective cone

    A projective cone in projective geometry is the union of all lines that intersect a projective subspace R and an arbitrary subset A of some other subspace S, disjoint from R....
    , a similar (but more general) concept in projective geometry
  • Conical projection, either a central projection or a perspective projection