im·​pel·​ler | \ im-ˈpe-lər How to pronounce impeller (audio) \
variants: or less commonly impellor

Definition of impeller

1 : one that impels
2a : a rotor located in a conduit to impart motion to a fluid
b : a blade of a rotor

Examples of impeller in a Sentence

Recent Examples on the Web The company says the impeller, which is the rotating part of the pump, could be defective. NBC News, "Honda recalls over 628,000 vehicles to replace fuel pumps," 31 Mar. 2021 The fuel pumps in these vehicles have an impeller which can crack and eventually lead to the fuel pump to stop working. Colin Beresford, Car and Driver, "Honda, Acura Recall 628K Vehicles for Defective Fuel Pumps," 31 Mar. 2021 Single stage snowblowers have an auger that picks up the snow and blows it out the chute, while costlier two stage machines work faster because their augers only have to move snow up to an impeller that does the actual blowing. Field & Stream, "Best Snow Blower: How to Choose the Right Size and Type for You," 24 Feb. 2021 It’s like a miniature hydroelectric dam: Water passing through spins an impeller that powers a generator that charges the internal battery. Wilson Rothman, WSJ, "Best of CES 2021: The (Virtual) Tech Show’s Weirdest and Most Wondrous Gadgets," 15 Jan. 2021 The snow is removed in two stages, with an auger feeding the snow into an impeller, which sends snow through the chute. Tim Johnson,, "With snow on its way, here are the best removal products for winter weather in Chicago," 28 Dec. 2020 The material gets to the impeller faster and at a steadier rate. Bradley Ford, Popular Mechanics, "The Best Snowblowers for Digging Yourself Out," 9 Sep. 2020 Some blower-vac tools have a metal impeller blade that will shred leaves on the vacuum setting. Beth Botts,, "Shredded leaves have plenty of uses in gardens, from nurturing soil for spring vegetables to feeding the lawn," 25 Oct. 2020 Normally, the auger pushes snow to the center, which is swept toward the intake housing and the impeller by the snow behind it. Bradley Ford, Popular Mechanics, "The Best Snowblowers for Digging Yourself Out," 9 Sep. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'impeller.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of impeller

1685, in the meaning defined at sense 1

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Time Traveler for impeller

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The first known use of impeller was in 1685

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Last Updated

9 Apr 2021

Cite this Entry

“Impeller.” Dictionary, Merriam-Webster, Accessed 12 Apr. 2021.

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