- external-combustionengine
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ex·ter·nal-com·bus·tion engine (ĭk-stûrʹnəl-kəm-bŭsʹchən)
n.
An engine, such as a steam engine, in which the fuel is burned outside the engine cylinder.
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Universalium. 2010.
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Universalium. 2010.
internal-combustionengine — in·ter·nal com·bus·tion engine (ĭn tûrʹnəl kəm bŭsʹchən) n. An engine, such as an automotive gasoline piston engine or a diesel, in which fuel is burned within the engine proper rather than in an external furnace, as in a steam engine. * * * … Universalium