- noting a power source, especially a steam engine, using the same fluid at three successive stages of expansion to do work in three or more cylinders.
Examples from the Web for triple-expansion
Historical Examples of triple-expansion
The triple-expansion engine is cutting down ocean freight, making distance of no account.Harding of Allenwood
She is barquentine rigged, and has triple-expansion engines giving her a speed under steam of nine to ten knots.South!
Sir Ernest Shackleton
How does a triple-expansion engine differ from an ordinary steam-engine?Commercial Geography
Jacques W. Redway
The ship was driven by steam, the triple-expansion engine being 500-horse power and the rate of speed twenty-five miles an hour.The Goddess of Atvatabar
William R. Bradshaw
I know a triple-expansion ass not a hundred miles from here; so fire away.The Mayor of Warwick
Herbert M. Hopkins