[ im-pel-er ]
/ ɪmˈpɛl ər /


a person or thing that impels.
a rotor for transmitting motion, as in a centrifugal pump, blower, turbine, or fluid coupling.

Nearby words

  1. impediment,
  2. impedimenta,
  3. impedor,
  4. impel,
  5. impellent,
  6. impend,
  7. impendent,
  8. impending,
  9. impenetrability,
  10. impenetrable

Origin of impeller

First recorded in 1675–85; impel + -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for impeller

  • She pressed the impeller—just as his left foot kicked in a high arc and caught the side of the barrel.

  • For instance, Zwingli asserted that God was the "author, mover, and impeller to sin."

  • As he did, he saw Astrid's knuckles tighten around the impeller.

British Dictionary definitions for impeller


/ (ɪmˈpɛlə) /


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