Triple-expansion steam engine

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Related to Triple-expansion steam engine: Steam power
a compound steam engine in which the same steam performs work in three cylinders successively.

See also: Triple

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Sir William Prescott: The world's largest fully operational triple-expansion steam engine.
Its centrepiece artifact would be a donated triple-expansion steam engine taken from a former Mackinaw Straits car ferry.