Definitions of piston

  1. United States neoclassical composer (1894-1976) Scrapingweb Dictionary DB
  2. mechanical device that has a plunging or thrusting motion Scrapingweb Dictionary DB
  3. 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. Webster Dictionary DB
  4. A small solid cylinder, fitting exactly and moving up and down by, or working against, a fluid, as, in the barrel of a pump, or in an engine cylinder. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  5. A short solid cylinder, used in pumps, etc., fitting and moving up and down within another hollow one. The american dictionary of the english language. By Daniel Lyons. Published 1899.
  6. Solid cylinder moving up and down in a hollow one, in machinery. The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894.
  7. A disk connected with a rod, and fitted to slide in a cylinder, as in a steam - engine. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  8. A solid disk fitting tightly into a hollow cylinder, and capable of being driven up or down by pressure from above or below. Piston-rod, the rod attaching the piston to the adjoining machinery. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
  9. The plunger in a pump or steam-engine; a strong short rod of wood or iron, solid or hollow, with a valve fitted at the bottom, made to fit exactly the barrel of a pump, or the cylinder of a steam-engine, and to work up and down in it. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
  10. 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. pins[)e]re, pistum.] gutenberg.org/ebooks/37683
  11. Disk or short cylinder of wood, metal, &c., fitting closely within tube in which it moves up& down, used in steam-engine, pump, &c., to impart or receive motion by means of p.-rod; sliding valve in cornet &c. [French] Concise Oxford Dictionary
  12. n. [Latin] A short cylinder of metal or other solid substance, which fits exactly the cavity of a pump or barrel, and works alternately up and down or backward and forward in it. Cabinet Dictionary

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