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 tiny impeller shown above runs at about 110,000 rpm. Alexander George, Popular Mechanics, "Dyson Made a $400 Hair Dryer," 27 Apr. 2016 Their gigantic impeller and a discharge snout that’s low and parallel to the ground will peel even wet leaves right off the surface. Ryan D'agostino, Popular Mechanics, "We Test the Very Best Leaf Blowers You Can Buy," 5 Nov. 2018 The motor inside this machien is a variant of the propeller/impeller system that powers Dyson vacuums and fans. Alexander George, Popular Mechanics, "Dyson Made a $400 Hair Dryer," 27 Apr. 2016 Blood can produce life-threatening clots if it is not kept flowing at the right rate, and its cells can be damaged by mechanical impellers or other unforgiving components of the machine. Henry Petroski, WSJ, "‘Ticker’ Review: The Race to Reinvent the Heart," 3 Aug. 2018 System efficacy improved dramatically after 1913, when a young engineer named Albert Baldwin Wood designed an enormous impeller pump that could discharge water even faster. Richard Campanella, The Atlantic, "How Humans Sank New Orleans," 6 Feb. 2018 One problem: Thon's receipt for the impeller was 23 years old. Author: Rick Sinnott, Alaska Dispatch News, "Anchorage’s own Noah: A boat builder’s 30-year obsession comes together at last," 26 Aug. 2017 The one-man hovercraft's 13-inch impeller keeps the fiberglass skimmer 4 inches above the ground and moving as fast as 16 mph. Wired Staff, WIRED, "Wired Tools," 1 Dec. 2001

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.

See More

First Known Use of impeller

1685, in the meaning defined at sense 1

Keep scrolling for more

Learn More about impeller

Dictionary Entries near impeller








Statistics for impeller

Last Updated

18 Feb 2019

Look-up Popularity

Time Traveler for impeller

The first known use of impeller was in 1685

See more words from the same year

More from Merriam-Webster on impeller

Rhyming Dictionary: Words that rhyme with impeller Encyclopedia article about impeller

Comments on impeller

What made you want to look up impeller? Please tell us where you read or heard it (including the quote, if possible).


the range of authority or knowledge

Get Word of the Day daily email!

Test Your Vocabulary

Original Meanings Quiz

  • rembrandt-painting-a-young-scholar-and-his-tutor
  • Which of the following is the earliest known sense of the word awe?
True or False

Test your knowledge - and maybe learn something along the way.

Add Diction

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!