Definition of piston Piston
/pɪˈstʌn/ - [pistun] - Pis•ton
We found 10 definitions of piston from 8 different sources.
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What does piston mean?
WordNet
NounPlural: pistons |
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| piston - mechanical device that has a plunging or thrusting motion | ||
| plunger | ||
| mechanical device mechanism consisting of a device that works on mechanical principles | ||
| reciprocating engine an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders | ||
| piston ring seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall | ||
| piston - United States neoclassical composer (1894-1976) | ||
| Walter Piston | ||
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Wiktionary 
Webster DictionaryWebster's Unabridged Dictionary 📘
- piston (n.)
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.
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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piston
A mechanical device that has a plunging or thrusting motion.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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piston
pis′tun, n. a circular plate of metal, or other material, used in pumps, steam-engines, &c., fitting and moving up and down within a tube or hollow cylinder.—n. Pis′ton-rod, the rod to which the piston is fixed, and which moves up and down with it. [Fr.,—It. pistone—pesto, to pound—L. pinsĕre, pistum.]
Sailor's Word-BookThe Sailor's Word-Book ⛵
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piston
In the marine steam-engine, a metal disc fitting the bore of the cylinder, and made to slide up and down within it easily, in order, by its reciprocating movement, to communicate motion to the engine.
Wikipedia 
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In general, a piston is a lubricated sliding shaft that fits tightly inside the opening of a cylinder. Its purpose is to change the volume enclosed by the cylinder, to exert a force on a fluid inside the cylinder, to cover and uncover ports, or some combination of these. A rubber seal is sometimes used to keep the lubricate within the shaft. Due to the constant motion of the machine this seal wears quickly and should be replaced with every servicing. If the seal should break during usage there can be disastrous long lasting consequences for the machine.
Creating force.
There are two ways that a piston engine can transform combustion into motive power. These are two-stroke and four-stroke.
A single cylinder two-stroke engine produces power every crankshaft revolution, while a single cylinder four-stroke engine produces power once every two revolutions. Older designs of small two-stroke engines produced more pollution than four stroke engines. However, modern two-stroke designs, like the Vespa ET2 Injection utilise fuel-injection and are as clean as four-strokes. Large diesel two-stroke engines, as used in ships and locomotives, have always used fuel injection and produce low emissions. One of the biggest internal combustion engines in the world, the Wärtsilä-Sulzer RTA96-C is a two-stroke; it is bigger than most two-story houses, has pistons nearly 1 metre in diameter and is one of the most efficient mobile engines in existence. In theory, a four stroke engine has to be larger
Part of speech
🔤- piston, noun, singular of pistons.
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