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reciprocating engine is a noun meaning "an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders". It carries one recorded sense.
an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders
Definitions, synonyms and semantic relations for reciprocating engine come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.