piston

[ pis-tuhn ]

/ ˈpɪs tən /

SEE SYNONYMS FOR piston ON THESAURUS.COM

noun

a disk or cylindrical part tightly fitting and moving within a cylinder, either to compress or move a fluid collected in the cylinder, as air or water, or to transform energy imparted by a fluid entering or expanding inside the cylinder, as compressed air, explosive gases, or steam, into a rectilinear motion usually transformed into rotary motion by means of a connecting rod.

a pumplike valve used to change the pitch in a cornet or the like.

Origin of piston

First recorded in 1695–1705; from French, from Italian pistone “piston,” a learned alteration of pestone “large pestle,” equivalent to pest(are) “to pound” (variant of Medieval Latin pistare, derivative of Latin pīstus, past participle of pīnsere “to pound, crush”) + -one augmentative suffix

OTHER WORDS FROM piston

pis·ton·like, adjectivesub·pis·ton, noun

Words nearby piston

pistolero, pistol grip, pistol-handle knife, pistology, pistol-whip, piston, piston engine, piston pin, piston ring, piston rod, piston slap

Definition for piston (2 of 2)

Piston

[ pis-tuhn ]

/ ˈpɪs tən /

noun

Walter, 1894–1976, U.S. composer.

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for piston

This test may be made with the wrist-pin alone, or if the piston is in place, a straight edge or spirit level may be employed.
Aviation Engines|Victor Wilfred Pag
In a direct-acting engine the throw of the crank is equal to the stroke of the piston.
An Introduction to Machine Drawing and Design|David Allan Low
Three or more piston rings lying in slots (not shown) prevent the escape of gas past the piston.
How it Works|Archibald Williams
Like a piston rod his arm shot out untiringly and the ball whistled as it cut the plate.
Baseball Joe in the World Series|Lester Chadwick

The piston is carefully fitted to slide easily in the cylinder, being made practically steam tight by means of packing rings.
Steam Engines|Anonymous

British Dictionary definitions for piston

piston

/ (ˈpɪstən) /

noun

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

Word Origin for piston

C18: via French from Old Italian pistone, from pistare to pound, grind, from Latin pinsere to crush, beat

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for piston

piston

[ pĭs′tən ]

A solid cylinder or disk that fits snugly into a hollow cylinder and moves back and forth under the pressure of a fluid (typically a hot gas formed by combustion, as in many engines), or moves or compresses a fluid, as in a pump or compressor.

单词	piston
释义	piston [ pis-tuhn ] / ˈpɪs tən / SEE SYNONYMS FOR piston ON THESAURUS.COM noun a disk or cylindrical part tightly fitting and moving within a cylinder, either to compress or move a fluid collected in the cylinder, as air or water, or to transform energy imparted by a fluid entering or expanding inside the cylinder, as compressed air, explosive gases, or steam, into a rectilinear motion usually transformed into rotary motion by means of a connecting rod. a pumplike valve used to change the pitch in a cornet or the like. Origin of piston First recorded in 1695–1705; from French, from Italian pistone “piston,” a learned alteration of pestone “large pestle,” equivalent to pest(are) “to pound” (variant of Medieval Latin pistare, derivative of Latin pīstus, past participle of pīnsere “to pound, crush”) + -one augmentative suffix OTHER WORDS FROM piston pis·ton·like, adjectivesub·pis·ton, noun Words nearby piston pistolero, pistol grip, pistol-handle knife, pistology, pistol-whip, piston, piston engine, piston pin, piston ring, piston rod, piston slap Definition for piston (2 of 2) Piston [ pis-tuhn ] / ˈpɪs tən / noun Walter, 1894–1976, U.S. composer. Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for piston This test may be made with the wrist-pin alone, or if the piston is in place, a straight edge or spirit level may be employed. Aviation Engines\|Victor Wilfred Pag In a direct-acting engine the throw of the crank is equal to the stroke of the piston. An Introduction to Machine Drawing and Design\|David Allan Low Three or more piston rings lying in slots (not shown) prevent the escape of gas past the piston. How it Works\|Archibald Williams Like a piston rod his arm shot out untiringly and the ball whistled as it cut the plate. Baseball Joe in the World Series\|Lester Chadwick The piston is carefully fitted to slide easily in the cylinder, being made practically steam tight by means of packing rings. Steam Engines\|Anonymous British Dictionary definitions for piston piston / (ˈpɪstən) / noun 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 Word Origin for piston C18: via French from Old Italian pistone, from pistare to pound, grind, from Latin pinsere to crush, beat Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to piston cylinder, generator, transformer, turbine, tool, power plant, appliance, instrument, motor, weapon, diesel, mechanism, apparatus, means, pot, fan, contrivance, agent, dynamo, barrel Scientific definitions for piston piston [ pĭs′tən ] A solid cylinder or disk that fits snugly into a hollow cylinder and moves back and forth under the pressure of a fluid (typically a hot gas formed by combustion, as in many engines), or moves or compresses a fluid, as in a pump or compressor. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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piston

noun

Origin of piston

OTHER WORDS FROM piston

Words nearby piston

Definition for piston (2 of 2)

noun

Example sentences from the Web for piston

British Dictionary definitions for piston

noun

Word Origin for piston

Words related to piston

Scientific definitions for piston