steam engine definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- an engine using steam under pressure to supply mechanical energy, usually through the action of a piston sliding in a cylinder
- a locomotive powered by steam
steam engine definition by American Heritage Dictionary
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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.
steam engine - Science Definition
An engine in which the energy of hot steam is converted into mechanical power, especially an engine in which the force of expanding steam is used to drive one or more pistons. The source of the steam is typically external to the part of the machine that converts the steam energy into mechanical energy. Compare internal-combustion engine.
Rightward (top) and leftward (bottom) movements of a slide valve steam engine.