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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ɪmˈpɛl ər)

1. one that impels.
2. a rotor for transmitting motion, as in a centrifugal pump, turbine, or fluid coupling.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
It was found out that some of the parts have aged and that one of the impellers was not working out of the 32 impellers.
Zhu, "Direct and inverse iterative design method for centrifugal pump impellers," Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, vol.
Cast impellers are frequently found in leaf blowers that make rustling leaves a bit more palatable.
The relative movement between rotating impellers and stationary guide vanes [1], as well as the trailing edge vortex shedding [2], results into highly irregular pressure pulsation.
To analyze the effect of impeller diameter on the performance of high-speed rescue pumps, simulations were performed using four impellers:
Although wastewater treatment has improved, the amount of oxygen in wastewater, together with chemical treatment of wastewater generally, leads to a higher degree of corrosion of volutes, pump impellers and propellers.
Once the accuracy of the model was confirmed it was then possible to introduce design improvements to the impellers, the labyrinth seals, the inter-coolers, the bearings and the shaft itself.
In addition, we conducted steady-state thermal testing to measure the convective thermal resistance (average heat transfer coefficient) of the rotating impellers. Finally, we showed that the performance trends at the free delivery flow rate can be captured with a relatively simple CFD model.
Rockland, MA, August 12, 2014 --( Globe Marine is pleased to introduce another new marine impeller model added to its line of world-class Globe Run-Dry[R] Impellers -- the only flexible impeller in the world that is able to run-dry for up to 15 minutes.
In order to determine the pure bending stress in the shaft due only to unbalanced hydraulic forces acting on the mixing impellers (ignoring tensional stress) it was a matter of determining the magnitude of these hydraulic forces and where along the shaft they were acting (impeller location).
Nienow, "Mixing in large-scale vessels stirred with multiple radial or radial and axial up-pumping impellers," Chemical Engineering Science, vol.