cylinder

cylinder


cyl·in·der    Audio Help   (sĭl'ən-dər)   

n.  
  1. Mathematics

    1. 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.

    2. The portion of such a surface bounded by two parallel planes and the regions of the planes bounded by the surface.

    3. A solid bounded by two parallel planes and such a surface, especially such a surface having a circle as its directrix.

    4. The chamber in which a piston of a reciprocating engine moves.

    5. The chamber of a pump from which fluid is expelled by a piston.

  2. A cylindrical container or object.

  3. Engineering

    1. The chamber in which a piston of a reciprocating engine moves.

    2. The chamber of a pump from which fluid is expelled by a piston.

  4. The rotating chamber of a revolver that holds the cartridges.

  5. Any of several rotating parts in a printing press, especially one that carries the paper.

  6. Archaeology A cylindrical stone or clay object with an engraved design or inscription.


[Latin cylindrus, from Greek kulindros, from kulindein, to roll.]
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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
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