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suction

The act or process of sucking; the act of drawing, as fluids, by exhausting the air. Suction chamber, the chamber of a pump into which the suction pipe delivers. Suction pipe, Suction valve, the induction pipe, and induction valve, of a pump, respectively. Suction pump, the common pump, in which the water is raised into the barrel by atmospheric pressure.

Origin: L. Sugere, suctum, to suck; cf. OF. Suction. See Suck.