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piston |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.03 sec. |
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piston a disc or cylindrical part that slides to and fro in a hollow cylinder. In an internal-combustion engine it is forced to move by the expanding gases in the cylinder head and is attached by a pivoted connecting rod to a crankshaft or flywheel, thus converting reciprocating motion into rotation piston [′pis·tən] (electromagnetism) A sliding metal cylinder used in waveguides and cavities for tuning purposes or for reflecting essentially all of the incident energy. Also known as plunger; waveguide plunger. (engineering) (mechanical engineering) A sliding metal cylinder that reciprocates in a tubular housing, either moving against or moved by fluid pressure. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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