Cylinder

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Cylinder may refer to:

  • Hydraulic cylinder, a cylinder barrel with piston rod for pushing and pulling using pressurized fluid
  • Pneumatic cylinder, a cylinder barrel with piston rod for pushing and pulling using compressed gases
  • Gas cylinder, containers used to store compressed gases or compressed air
  • Diving cylinder, a type of gas cylinder used in Scuba diving
  • Graduated cylinder, glassware used for measurement of liquids in laboratories
  • Phonograph cylinder, the dominant medium of audio storage from the 1870s to the 1910s and in limited use (such as in the dictaphone) through the mid 20th century
  • Cylinder (firearms), the cylinder is the rotating device that contains the firing chambers of a revolver
  • A type of lens and a form of refraction error
  • The part of a lock that is profiled to accept a specific key