impeller

American  

[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.

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impeller British  

/ ɪmˈpɛlə /

noun

1. the vaned rotating disc of a centrifugal pump, compressor, etc

2. a compressor or centrifugal pump having such an impeller

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Etymology

Origin of impeller

First recorded in 1675–85; impel + -er ¹

Example Sentences

Parts of which household device may include the airfoil propulsion, Helmholtz cavity, and impeller?

From Slate • Sep. 14, 2023

In minutes, he found the problem: A Ruffles potato chip bag had clogged the impeller.

From Washington Times • Oct. 6, 2018

Specifically, the impeller that drives the fluid into the motor has turned out to be so efficient that it has put intolerable loads on the shaft and bearings that support it.

From BBC • Jun. 12, 2015

Ultrasonic models use vibrating nebulizers, evaporative models blow air over a wet wick and impeller models produce mist with a rotating disc.

From Seattle Times • Feb. 20, 2012

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

From Evil Out of Onzar by Ganes, Mark