Definition of cone in English:


Line breaks: cone
Pronunciation: /kəʊn


  • 1A solid or hollow object which tapers from a circular or roughly circular base to a point: stalls selling paper cones full of fresh berries a cone of acrylic yarn
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    • Its present shape is a truncated cone with a base area of 2.1ha and a height of 40m.
    • Spiny brown growths resembling hollow cones that form at branch tips on Colorado spruce are caused by an insect called Cooley spruce gall aphid.
    • An old wooden soccer goal sits in pieces at the base of the cone, placed there by soldiers who once played on what was undoubtedly the world's most dangerous soccer field.
  • 1.1 Mathematics A surface or solid figure generated by the straight lines which pass from a circle or other closed curve to a single point (the vertex) not in the same plane as the curve.
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    • In the first 57 propositions in On the Section of a Cone Serenus examined triangular sections of right and scalene cones made by planes passing through the vertex.
    • If the planes pass through the vertex of the cone, the conics are said to be degenerate, otherwise they are not.
    • To be precise, it has to pass through the cone surface
  • 1.2A conical mountain, especially one of volcanic origin: the smooth cone of Vesuvius
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    • Various architectures connecting extrusive mud volcanic cones to their underlying source layer have been described, ranging from bulbous diapirs to steep diatremes and narrow vertical pipes.
    • Monogenetic volcanoes are small and occur as scoria cones, tuff cones and rings, and maars; they form from single, typically brief eruptions.
    • That error is encouraged by the mountain's cone shape and real volcanoes nearby - as at Sibley Preserve.
  • 1.3 (also traffic cone) A plastic cone-shaped object that is used to separate off or close sections of a road.
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    • There are also several planks of wood, a traffic cone, a section of mesh metal fence and a shopping trolley.
    • Video footage showed him throwing up to a dozen missiles and a traffic cone at police in the White Abbey Road area during his 35-minute involvement.
    • Moving on toward the production control area, Duncan stops to indicate a red traffic cone sitting inside a square taped on the floor.
  • 1.4A coned-shaped wafer container in which ice cream is served.
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    • Ice cream cones will be served; the butterfly wing will be open.
    • I no longer eat chocolate ice cream cones because of that searing memory.
    • Unfortunately, celery sticks aren't as tempting as overgrown cinnamon buns and chocolate-dipped ice cream cones.
  • 1.5 (also pyrometric cone) A ceramic pyramid that melts at a known temperature and is used to indicate the temperature of a kiln.
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    • The imperfections are then cleaned off with tools and the casting is put in the kiln at 1225 cone 6 and becomes vitrified porcelain.
    • After the tiles were coated, they were loaded into the kilns and fired to cone 5.
    • Planters are covered with a clear glaze and fired to cone 05 in an electric kiln.
  • 1.6 short for cone shell.
  • 2The dry fruit of a conifer, typically tapering to a rounded end and formed of a tight array of overlapping scales on a central axis which separate to release the seeds: a cedar cone
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    • Conifer cones, cone scales, cone seeds, and tiny scaly conifer stems are found at a number of short-shoot sites.
    • Pinaceae are Monoecious with small pollen cones and larger seed cones with spirally arranged scales.
    • But that's good news for the tree, since fire opens its serotinous cones to release the seeds, starting the process over again.
  • 2.1A flower resembling a pine cone, especially that of the hop plant.
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    • Magnus has large, warm purple flowers with an orange cone on strong stems about 90 cm tall and has a very long flowering period from July to October.
    • I covered the plants with rose cones from the garden center.
    • Both have daisy-like flowers with a black cone at the centre, and both need well-drained, humus-rich soil and also benefit from feeding in midsummer.
  • 3 Anatomy One of two types of light-sensitive cell in the retina of the eye, responding mainly to bright light and responsible for sharpness of vision and colour perception. Compare with rod ( sense 5).
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    • Rods are responsible for vision in low light and cones are responsible for color vision.
    • The cornea and lens of the eye ensure that the light rays are focused on the rods and cones of the retina.
    • This test evaluates the cones of the retina and the visual cortex.


[with object] (cone something off) British Back to top  
  • Separate off or mark a road with traffic cones: part of the road has been coned off
    More example sentences
    • Sections of the roundabout's roads will be coned off but it will remain open to traffic.
    • Here, the nearside lane of the westbound dual carriageway of the A64 was coned off, causing horrendous traffic jams.
    • Council workers moved into Gillygate and coned the street off preparing to start work.


late Middle English (denoting an apex or vertex): from French cône, via Latin from Greek kōnos.

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Pronunciation: kəːf
a slit made by cutting with a saw