|1.||a solid consisting of two parallel planes bounded by identical closed curves, usually circles, that are interconnected at every point by a set of parallel lines, usually perpendicular to the planes. Volume base area × length|
|2.||a surface formed by a line moving round a closed plane curve at a fixed angle to it|
|3.||any object shaped like a cylinder|
|4.||See also cylinder block the chamber in a reciprocating internal-combustion engine, pump, or compressor within which the piston moves|
|5.||the rotating mechanism of a revolver, situated behind the barrel and containing cartridge chambers|
|6.||printing any of the rotating drums on a printing press|
|7.||Also called: cylinder seal a cylindrical seal of stone, clay, or precious stone decorated with linear designs, found in the Middle East and Balkans: dating from about 6000 |
|8.||(Brit) Also called: hot-water cylinder a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system|
|9.||firing on all cylinders working or performing at full capability|
|10.||(tr) to provide (a system) with cylinders|
|[C16: from Latin cylindrus, from Greek kulindros a roller, from kulindein to roll]|
cylinder cyl·in·der (sĭl'ən-dər)
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.
A solid bounded by two parallel planes and such a surface, especially such a surface having a circle as its directrix.
A cylindrical or rodlike renal cast.
A cylindrical lens.
A cylindrical metal container for gases stored under high pressure.
|cylinder (sĭl'ən-dər) Pronunciation Key
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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.