impeller

noun
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 machine also scored high marks for its comfortable and highly adjustable shoulder straps, handle comfort, and the 90-degree elbow that connects the impeller housing to the flexible blower tube. Roy Berendsohn, Popular Mechanics, "The 10 Best Leaf Blowers for Any Size Yard," 31 Aug. 2020 An impeller sucks and pushes water up through the marine-specific block and cylinder heads. David Beard, Car and Driver, "The Engine You're Driving Might Live a Cooler Life on the Water," 15 Aug. 2020 Changing the water pump impeller is cheap insurance against water pump failure next season. Popmech Editors, Popular Mechanics, "How To Winterize Your Boat for the Cold Months Ahead," 21 Nov. 2019 Rated at 434 horsepower, this 90-degreee V-6 places its turbo in the valley between the cylinder banks in order to shorten up exhaust-gas pathways to the impellers and provide nearly instantaneous boost. John Pearley Huffman, Car and Driver, "Porsche's Updated Macan Turbo Remains a Hot SUV Benchmark," 10 Mar. 2020 Be sure to read the owner’s manual before using a snow blower, and never place your hand or foot anywhere near the auger or impeller. James Jackson, Popular Mechanics, "How to Shovel Snow Without Hurting Yourself," 18 Sep. 2019 An inspection revealed that the boat’s scallop washing machine had a faulty impeller that didn’t force enough clean water through the system. BostonGlobe.com, "Ever wonder where your next meal is coming from? A Massachusetts fishing company will soon be able to show diners at a restaurant chain in California exactly where and when the seafood on their plates was harvested, in some cases even showing video of scallops being hauled out of the sea.," 24 Oct. 2019 The Toro Electric Ultra Blower Vacuum features variable speed control and a new, larger metal impeller. Rachel Rothman, Good Housekeeping, "The 7 Best Leaf Vacuums to Make Yard Work Easy," 26 July 2019 The impeller has a 10:1 reduction ratio and this model comes with a 10-gallon reusable collection bag. Rachel Rothman, Good Housekeeping, "The 7 Best Leaf Vacuums to Make Yard Work Easy," 26 July 2019

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

Time Traveler

The first known use of impeller was in 1685

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Last Updated

11 Sep 2020

Cite this Entry

“Impeller.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/impeller. Accessed 25 Sep. 2020.

More from Merriam-Webster on impeller

Britannica.com: Encyclopedia article about impeller

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