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Noun: four-stroke engine
  1. 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
    - four-stroke internal-combustion engine

Derived forms: four-stroke engines

Type of: ICE, internal-combustion engine

Encyclopedia: Four-stroke engine

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