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Table of Contents -- piston
POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
ROGET THESAURUS
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piston

RELATED WORDS :

 : 
Noun
 : 
Pis=ton

WORDNET DICTIONARY

Noun piston has 2 senses

CIDE DICTIONARY

pistonn. [F. piston; cf. It. pistone piston, also pestone a large pestle; all fr. L. pinsere, pistum, to pound, to stamp. See Pestle, Pistil.].
     A sliding piece which either is moved by, or moves against, fluid pressure. It usually consists of a short cylinder fitting within a cylindrical vessel along which it moves, back and forth. It is used in steam engines to receive motion from the steam, and in pumps to transmit motion to a fluid; also for other purposes.  [1913 Webster]
Piston head (Steam Eng.), that part of a piston which is made fast to the piston rod. -- Piston rod, a rod by which a piston is moved, or by which it communicates motion. -- Piston valve (Steam Eng.), a slide valve, consisting of a piston, or connected pistons, working in a cylindrical case which is provided with ports that are traversed by the valve.

OXFORD DICTIONARY

piston, n.
1 a disc or short cylinder fitting closely within a tube in which it moves up and down against a liquid or gas, used in an internal-combustion engine to impart motion, or in a pump to receive motion.
2 a sliding valve in a trumpet etc.

Idiom
piston-ring a ring on a piston sealing the gap between the piston and the cylinder wall. piston-rod a rod or crankshaft attached to a piston to drive a wheel or to impart motion.
Etymology
F f. It. pistone var. of pestone augment. of pestello PESTLE

ROGET THESAURUS

piston

Stopper

N stopper, stopple, plug, cork, bung, spike, spill, stopcock, tap, rammer, ram, ramrod, piston, stop-gap, wadding, stuffing, padding, stopping, dossil, pledget, tompion, tourniquet, cover, valve, vent peg, spigot, slide valve, janitor, doorkeeper, porter, warder, beadle, cerberus, ostiary.

See related words and definitions of word "piston" in Indonesian
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