Stirling engine

noun
Stir·ling engine | \ˈstər-liŋ- \

Definition of Stirling engine 

: an external combustion engine having an enclosed working fluid (such as helium) that is alternately compressed and expanded to operate a piston

First Known Use of Stirling engine

1896, in the meaning defined above

History and Etymology for Stirling engine

Robert Stirling †1878 Scottish engineer

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The first known use of Stirling engine was in 1896

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