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    four-stroke internal-combustion engine

    four-stroke internal-combustion engine - Dictionary definition and meaning for word four-stroke internal-combustion engine

    Definition
    (noun) an internal-combustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke; work is done on the third stroke and the products of combustion are exhausted on the fourth stroke
    Synonyms : four-stroke engine
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