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Definition of Four-stroke engine
1. 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.
Exact synonyms: Four-stroke Internal-combustion Engine
Generic synonyms: Ice, Internal-combustion Engine
Generic synonyms: Ice, Internal-combustion Engine