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Piston Meaning and Definition in Dictionary

Definitions from Wordnet 2.0

  • mechanical device that has a plunging or thrusting motion
  • United States neoclassical composer (1894-1976)

Definitions from Wiktionary

  • United States neoclassical composer (1894-1976) ,
  • mechanical device that has a plunging or thrusting motion

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Piston Meaning and Definition in Wikipedia

In general, a piston is a lubricated sliding shaft that fits tightly inside the opening of a cylinder. Its purpose is to change the volume enclosed by the cylinder, to exert a force on a fluid inside the cylinder, to cover and uncover ports, or some combination of these. A rubber seal is sometimes used to keep the lubricate within the shaft. Due to the constant motion of the machine this seal wears quickly and should be replaced with every servicing. If the seal should break during usage there can be disastrous long lasting consequences for the machine.

There are two ways that a piston engine can transform combustion into motive power. These are two-stroke and four-stroke.

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