piston ring

Noun

Open English WordNet

Noun (1)

  1. seal consisting of a split metal ring that seals the gap between a piston and the cylinder wallType of sealPart of piston, plunger
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omniscientadjective

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Webster's Dictionary (1913)

Pis′ton ring.

Machinery A spring packing ring, or any of several such rings, for a piston.

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54 · with additions: 1913 supplement

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