| NOUN | artifact | four-stroke internal-combustion engine, four-stroke engine | 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 |
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| Meaning | 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. | |
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| Synonym | four-stroke engine | |
| Broader | internal-combustion engine, ICE | A heat engine in which combustion occurs inside the engine rather than in a separate furnace |
| Spanish | motor de cuatro tiempos | |
| Catalan | motor de quatre temps | |
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