Cylinder definition

sĭlən-dər
Frequency:
A cylindrical container or object.
noun
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The definition of a cylinder is a three dimensional shape with two round shapes at either end and two parallel lines connecting the round ends.

An example of cylinder is a can of tomato soup.

noun
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A three-dimensional surface or solid object bounded by a curved surface and two parallel circles of equal size at the ends. The curved surface is formed by all the line segments joining corresponding points of the two parallel circles.
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The surface of such a solid.
noun
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(geometry) A surface created by projecting a closed two-dimensional curve along an axis intersecting the plane of the curve.

When the two-dimensional curve is a circle, the cylinder is called a circular cylinder. When the axis is perpendicular to the plane of the curve, the cylinder is called a right cylinder. In non-mathematical usage, both right and circular are usually implied.

noun
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Any object in the form of a circular cylinder.
noun
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Any of several rotating parts in a printing press, especially one that carries the paper.
noun
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(archaeology) A cylindrical stone or clay object with an engraved design or inscription.
noun
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The surface generated by a straight line intersecting and moving along a closed plane curve, the directrix, while remaining parallel to a fixed straight line that is not on or parallel to the plane of the directrix.
noun
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The portion of such a surface bounded by two parallel planes and the regions of the planes bounded by the surface.
noun
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A solid bounded by two parallel planes and such a surface, especially such a surface having a circle as its directrix.
noun
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The chamber in which a piston of a reciprocating engine moves.
noun
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The chamber of a pump from which fluid is expelled by a piston.
noun
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Anything having the shape of a cylinder, whether hollow or solid.
  • The turning part of a revolver, containing chambers for cartridges.
  • The chamber in which the piston moves in a reciprocating engine.
  • The barrel of a pump.
  • On a printing press, a roller carrying the printing plates or the part receiving the impression.
  • A large, hollow, cylindrical clay object with cuneiform inscriptions, or a similar small stone worn on the wrist in ancient times in the Middle East.
noun
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A solid figure consisting of two parallel bases in the form of congruent, closed curves joined by a smooth, continuous, closed surface; specif., such a figure (right circular cylinder) having circular bases and a surface perpendicular to the bases.
noun
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(geometry) A solid figure bounded by a cylinder and two parallel planes intersecting the cylinder.
noun
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A cylindrical cavity or chamber in a mechanism, such as the counterpart to a piston found in a piston-driven engine.
noun
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A container in the form of a cylinder with rounded ends for storing pressurized gas.
noun
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An early form of phonograph recording, made on a wax cylinder.
noun
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The part of a revolver that contains chambers for the cartridges.
noun
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(computing) The corresponding tracks on a vertical arrangement of disks in a disk drive considered as a unit of data capacity.
noun
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The rotating chamber of a revolver that holds the cartridges.
noun
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Other Word Forms

Noun

Singular:
cylinder
Plural:
cylinders

Origin of cylinder

  • Latin cylindrus from Greek kulindros from kulindein to roll

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle French cylindre, from Latin cylindrus, from Ancient Greek κύλινδρος (kulindros).

    From Wiktionary