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from the GNU version of the Collaborative International Dictionary of English

  • n. an engine in which the motion of the piston is produced by the combustion or sudden production or expansion of gas; -- especially, an engine in which an explosive mixture of gas and air is forced into the working cylinder and ignited there by a gas flame or an electric spark.
  • A kind of internal-combustion engine (which see) using fixed gas; also, broadly, any internal-combustion engine.

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

  • n. an internal-combustion engine similar to a gasoline engine but using natural gas instead of gasoline vapor


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