momentum

noun

mo·​men·​tum mō-ˈmen-təm How to pronounce momentum (audio)
mə-
plural momenta mō-ˈmen-tə How to pronounce momentum (audio)
mə-
or momentums
1
: a property (see property sense 1a) of a moving body that the body has by virtue of its mass (see mass entry 2 sense 1c) and motion and that is equal to the product of the body's mass and velocity
broadly : a property of a moving body that determines the length of time required to bring it to rest when under the action of a constant force or moment
2
: strength or force gained by motion or by a series of events
The wagon gained momentum as it rolled down the hill.

Example Sentences

The company has had a successful year and hopes to maintain its momentum by introducing new products. The movie loses momentum toward the end.
Recent Examples on the Web Now momentum is finally here, the architects are determined to work quickly. Nell Lewis, CNN, 25 Nov. 2022 Wales snatched a draw from the jaws of defeat with a late penalty kick goal against the United States on Monday, and will look to carry that momentum into a matchup against an Iran squad that got routed by England. Usa Today Sports Staff, USA TODAY, 25 Nov. 2022 In a game full of big plays and momentum changes, Dennis-Yarmouth senior Wyatt Stevens made the final — and decisive — play in the final minute of the 26th Chowder Bowl. Brad Joyal, BostonGlobe.com, 24 Nov. 2022 The Bearcats carried that momentum into the second half. Brett Dawson, The Courier-Journal, 24 Nov. 2022 Ending the season with wins over the Cardinal and the Bruins would make the Bears feel quite a bit better about 2022 and perhaps give them some momentum heading into 2023. Steve Kroner, San Francisco Chronicle, 24 Nov. 2022 His entry did change momentum in Everett’s favor for awhile. Dylan Bumbarger, oregonlive, 24 Nov. 2022 Yet the defense has not helped itself or the offense, failing to create turnovers that might have produced momentum, advantageous field position or immediate points. Los Angeles Times, 24 Nov. 2022 However, there is still momentum on the flipside for Cincinnati. Mohammad Ahmad, cleveland, 23 Nov. 2022 See More

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

Word History

Etymology

New Latin, from Latin, movement

First Known Use

1610, in the meaning defined at sense 1

Time Traveler
The first known use of momentum was in 1610

Dictionary Entries Near momentum

Cite this Entry

“Momentum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/momentum. Accessed 28 Nov. 2022.

Kids Definition

momentum

noun

mo·​men·​tum mō-ˈment-əm How to pronounce momentum (audio)
plural momenta -ˈment-ə How to pronounce momentum (audio) or momentums
1
: the characteristic of a moving body that is caused by its mass and its motion
2

Medical Definition

momentum

noun

mo·​men·​tum mō-ˈment-əm, mə-ˈment- How to pronounce momentum (audio)
plural momenta -ˈment-ə How to pronounce momentum (audio) or momentums
: a property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity
broadly : a property of a moving body that determines the length of time required to bring it to rest when under the action of a constant force

More from Merriam-Webster on momentum

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