from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An engine that converts the heat energy of pressurized steam into mechanical energy, especially one in which steam drives a piston in a closed cylinder.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A piston engine driven by steam (as contrasted, for example, with a steam turbine).
  • n. Any heat engine that uses steam as its primary working fluid to do mechanical work.
  • n. A steam locomotive.

from the GNU version of the Collaborative International Dictionary of English

  • An engine moved by steam.

from The Century Dictionary and Cyclopedia

  • n. An engine in which the mechanical force arising from the elasticity and expansive action of steam, or from its property of rapid condensation, or from the combination of the two, is made available as a motive power.
  • n. A compound steam-engine.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. external-combustion engine in which heat is used to raise steam which either turns a turbine or forces a piston to move up and down in a cylinder


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