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impeller

[im-pel-er] /ɪmˈpɛl ər/
noun
1.
a person or thing that impels.
2.
a rotor for transmitting motion, as in a centrifugal pump, blower, turbine, or fluid coupling.
Origin
1675-1685
1675-85; impel + -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for impeller
  • The impeller increases the kinetic energy of the fluid by accelerating it from the impeller center out to the tip.
  • The impeller tip speed largely determines the pressure generated by a pump.
  • The impeller itself has a relatively simple two dimensional design.
  • The approach is to sense the onset of surge with a probe that directly measures re-circulation at the impeller inlet.
  • The fundamental principal is to rotate an impeller at a sufficient rpm as to cause a vacuum behind the impeller.
British Dictionary definitions for impeller

impeller

/ɪmˈpɛlə/
noun
1.
the vaned rotating disc of a centrifugal pump, compressor, etc
2.
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
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Word Origin and History for impeller
n.

1680s, agent noun from impel (v.). As a machine part from 1890.

Online Etymology Dictionary, © 2010 Douglas Harper
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