piston ring
noun Date: 1867 a springy split metal ring for sealing the gap between a piston and the cylinder wall

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • Piston ring — Pis ton ring (Mach.) A spring packing ring, or any of several such rings, for a piston. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • piston ring — n. a thin split ring fitted into a groove around a piston to seal the cylinder, transfer heat, and control cylinder wall lubrication …   English World dictionary

  • piston ring — n a circular metal spring used to stop gas or liquid escaping from between a piston and the tube that it moves in …   Dictionary of contemporary English

  • Piston ring — A piston ring is an open ended ring that fits into a groove on the outer diameter of a piston in a reciprocating engine such as an internal combustion engine or steam engine. The three main functions of piston rings in reciprocating engines are:# …   Wikipedia

  • piston ring — A metal, split ring installed in the groove on the outside wall of the piston. The ring contacts the sides of the ring groove and also rubs against the cylinder wall thus sealing the space between the piston and the wall. Poor rings can cause… …   Dictionary of automotive terms

  • piston ring — a metallic ring, usually one of a series, and split so as to be expansible, placed around a piston in order to maintain a tight fit, as inside the cylinder of an engine. Also called packing ring, ring. [1865 70] * * * …   Universalium

  • piston ring — noun a ring or seal that fits around a piston, sealing between the piston and the bore in which it slides …   Wiktionary

  • piston ring — noun a ring on a piston sealing the gap between the piston and the cylinder wall …   English new terms dictionary

  • piston ring — noun seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall • Hypernyms: ↑seal • Part Holonyms: ↑piston, ↑plunger …   Useful english dictionary

  • piston ring — pis′ton ring n. mac a metal ring, split so it can expand, placed around a piston to ensure a tight fit in the cylinder of an engine • Etymology: 1865–70 …   From formal English to slang

  • piston ring — /ˈpɪstən rɪŋ/ (say pistuhn ring) noun a metallic ring, usually one of a series, and split so as to be expansible, placed around a piston in order to maintain a tight fit, as inside the cylinder of an internal combustion engine …   Australian English dictionary

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