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piston ring
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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 engine.
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Also called packing ring, ring.
Origin of piston ring
First recorded in1865–70
Words nearby piston ring
pistology, pistol-whip, piston, piston engine, piston pin, piston ring, piston rod, piston slap, pistou, pit, pita
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use piston ring in a sentence
British Dictionary definitions for piston ring
piston ring
noun
a split ring, usually made of cast iron, that fits into a groove on the rim of a piston to provide a spring-loaded seal against the cylinder wall
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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