momentum

noun
mo·​men·​tum | \mō-ˈmen-təm, mə-\
plural momenta\ -​ˈmen-​tə \ or momentums

Definition of momentum 

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.

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Examples of momentum in a Sentence

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

Friends of the Underline A park project bringing momentum to Miami Metaphors of movement and transition run throughout the plans for the Underline, fitting for an infrastructure project underneath a rail corridor. Patrick Sisson, Curbed, "Miami’s Underline underscores potential of park projects," 19 Oct. 2018 Each wave is propelled by the one that came before, and its momentum carries into another break. Amandla Stenberg, Teen Vogue, "Amandla Stenberg Writes About Her Sexual Assaults," 6 Oct. 2018 The ministry says Kang and Pompeo agreed that Washington and Seoul will work to keep the momentum of dialogue alive while pursuing the denuclearization of the Korean Peninsula and stabilizing peace. Zeke Miller And Matthew Lee, Fox News, "Pompeo asked by Trump to delay visit to North Korea," 25 Aug. 2018 Dark Horse has played a huge role in keeping the fan momentum going for franchises like Buffy the Vampire Slayer, Alien and Firefly. Andrew Liptak, The Verge, "Dark Horse is losing its Buffy the Vampire Slayer comics," 16 Aug. 2018 Makeup artist Moshoodat Sanni and 18-year-old high-school grad Mathilda Bruny intend to keep that momentum going. Abby Haglage, refinery29.com, "4 Black Girls With Big Dreams & The 4 Women Living Them," 13 July 2018 The challenge will be to keep the momentum rolling when the hoopla around the announcements fades. Kenneth R. Gosselin, courant.com, "Arrival of Infosys and Seven Stars Raises Hopes For Financial Tech Future Of Hartford Region," 8 July 2018 England will look to keep the momentum alive in its second match against Panama on Sunday. Andrew Joseph, For The Win, "England fans lost their minds over Harry Kane's late game-winning goal," 18 June 2018 The true challenge, of course, will be to keep the momentum alive and to press North Korea into concrete steps to verify any dismantling of the nuclear program. Jeremy Diamond, Jeff Zeleny And Kevin Liptak, CNN, "Trump resets the world stage," 13 June 2018

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.

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First Known Use of momentum

1610, in the meaning defined at sense 1

History and Etymology for momentum

New Latin, from Latin, movement

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Statistics for momentum

Last Updated

15 Nov 2018

Look-up Popularity

Time Traveler for momentum

The first known use of momentum was in 1610

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More Definitions for momentum

momentum

noun

English Language Learners Definition of momentum

: the strength or force that something has when it is moving

: the strength or force that allows something to continue or to grow stronger or faster as time passes

physics : the property that a moving object has due to its mass and its motion

momentum

noun
mo·​men·​tum | \mō-ˈmen-təm \

Kids Definition of momentum

: the force that a moving body has because of its weight and motion

momentum

noun
mo·​men·​tum | \mō-ˈment-əm, mə-ˈment- \
plural momenta\ -​ˈment-​ə \ or momentums

Medical Definition of momentum 

: 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

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Comments on momentum

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