momentum
noun
mo·men·tum
mō-ˈmen-təm 
mə-
plural momenta
mō-ˈmen-tə
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.
Synonyms
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
In any case, the club had strengthened from a position of strength, sending out a message to a refreshed dressing room and beyond, and momentum continued to power them.
—
George Caulkin, The Athletic, 3 Feb. 2025
Head coach Tom Thibodeau immediately called timeout, and Anunoby’s matchup, LeBron James, unable to stop his momentum, lightly bumped into him before Anunoby cursed in frustration to his injury.
—Kristian Winfield, New York Daily News, 2 Feb. 2025
Can the software company keep that momentum going in 2025?
—Fred Imbert, CNBC, 2 Feb. 2025
What’s the key for February continuing that momentum?
—Tom Brueggemann, IndieWire, 2 Feb. 2025
See all Example Sentences for momentum 
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George Caulkin, The Athletic, 3 Feb. 2025
Head coach Tom Thibodeau immediately called timeout, and Anunoby’s matchup, LeBron James, unable to stop his momentum, lightly bumped into him before Anunoby cursed in frustration to his injury.
—Kristian Winfield, New York Daily News, 2 Feb. 2025
Can the software company keep that momentum going in 2025?
—Fred Imbert, CNBC, 2 Feb. 2025
What’s the key for February continuing that momentum?
—Tom Brueggemann, IndieWire, 2 Feb. 2025
See all Example Sentences for momentum
Dictionary Entries Near momentum
Cite this Entry
“Momentum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/momentum. Accessed 11 Feb. 2025.
Copy CitationKids Definition
momentum
noun
mo·men·tum
mō-ˈment-əm
plural momenta
-ˈment-ə
or momentums
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-
plural momenta
-ˈment-ə
or momentums
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
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