Dictionary De - En
De - Es
De - Pt| English Dictionary: Piston | by the DICT Development Group |
| 2 results for Piston | |
| From WordNet (r) 3.0 (2006) [wn]: | |
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| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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Piston \Pis"ton\, n. [F. piston; cf. It. pistone piston, also pestone a large pestle; all fr. L. pinsere, pistum, to pound, to stamp. See {Pestle}, {Pistil}.] (Mach.) 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. {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. | |
