- a person or thing that impels.
- a rotor for transmitting motion, as in a centrifugal pump, blower, turbine, or fluid coupling.
Origin of impeller
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for impeller
As he did, he saw Astrid's knuckles tighten around the impeller.
For instance, Zwingli asserted that God was the "author, mover, and impeller to sin."Determinism or Free-Will?
She pressed the impeller—just as his left foot kicked in a high arc and caught the side of the barrel.
- the vaned rotating disc of a centrifugal pump, compressor, etc
- a compressor or centrifugal pump having such an impeller
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for impeller
1680s, agent noun from impel (v.). As a machine part from 1890.
Online Etymology Dictionary, © 2010 Douglas Harper