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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 ?
Blades as the core part of the pump, which can not only influence the hydraulic performance, but also affect the strength of the impeller. In recent year, plenty of the efforts have been taken in the blade performance optimization.
For cast pump components, and especially for the core and impeller, 3D printing of the sand casting molds now eliminates the need for an entire post-processing step.
The design of desulfurization dust removal centrifugal pump is a single suction impeller: pump specific speed ns = (3.65n [square root of (Q)])/[H.sup.3/4] = 65.95, hydraulic efficiency [[eta].sub.h] = 1 + 0.0835lg(Q/n)1/3 = 0.860, volumetric efficiency [[eta].sub.v] = 1/(1 + 0.68n-2/3) = 0.960, and mechanical efficiency [[eta].sub.m] = 1 - 0.07 (1/ ([n.sub.s]/100)7/6) = 0.886.
* Efficient, high solids passage impeller and volute design, coupled to a high torque 4-pole motor (2, 3 and 5 hp).
The impeller diameter is a crucial design parameter because it can easily affect the performance of pumps [20-23].
During the past several decades, researches have been carried out experimentally and numerically to study the effects of impeller or guide vane geometries and operating conditions on pressure pulsations in a mixed-flow pump.
Being the component with the highest level of contact with transferred liquid, the material used in the impeller is a crucial factor as it is heavily affected by wear and erosion-corrosion.
Large centrifugal impeller compressors are commonplace throughout the petrochemical sector, where they usually operate on a continuous duty basis.
Most J-Series pumps can quickly be converted from High Volume to High Head (or vice-versa) by merely changing the impeller and the suction plate.