[sing-guh l-ak-ting] /ˈsɪŋ gəlˈæk tɪŋ/
(of a reciprocating engine, pump, etc.) having pistons accomplishing work only in one direction.
Compare double-acting (def 1).
(of a reciprocating engine or pump) having a piston or pistons that are pressurized on one side only Compare double-acting (sense 1)


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