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  1. internal combustion engine

    • IPA[inˈtərnl kəmˈbəsCHən ˈenjən]
    • n.
      an engine that generates motive power by the burning of gasoline, oil, or other fuel with air inside the engine, the hot gases produced being used to drive a piston or do other work as they expand.
    • noun: internal combustion engine, plural noun: internal combustion engines