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1. One that impels, as a rotating device used to force a fluid in a desired direction under pressure.
2. A rotor or rotor blade.


1. (General Engineering) the vaned rotating disc of a centrifugal pump, compressor, etc
2. (General Engineering) a compressor or centrifugal pump having such an impeller


(ɪmˈpɛl ər)

1. one that impels.
2. a rotor for transmitting motion, as in a centrifugal pump, turbine, or fluid coupling.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.impeller - the blade of a rotor (as in the compressor of a jet engine)impeller - the blade of a rotor (as in the compressor of a jet engine)
vane, blade - flat surface that rotates and pushes against air or water
rotor - rotating mechanism consisting of an assembly of rotating airfoils; "there are horizontal rotors on a helicopter or compressor rotors in a jet engine"
References in periodicals archive ?
Sources Sought:NSN 1660-01-180-2067; Impeller Wheel Airc; P/N 740168-3
In the simplified illustration of a centrifugal impeller wheel in figure 1 the outer or tip diameter of the impeller (D1), and by extension the tip velocity, will determine the compressor's lift.
The fluid is assumed to enter the impeller wheel at radius [r.
Contained in the loading door are the impeller wheel and motor, impeller wheel housing, L[N.
A specially designed infeed chute and impeller wheel provide for the necessary prepositioning of the potatoes and guarantee maximum length french fries.
Tenders are invited for Impeller Wheel Suitable For Modified Ventilation Fan For High Capacity Power Car With M S Drive Hub Coupled With Drive Motor Air Volume Rating 20000 Mh Speed Up To 4500 Rpm Dynamically Balanced As Per Iso Standard Point Synthetic Enamel Light Grey.