momentum

noun mo·men·tum \ mō-ˈmen-təm , mə- \
Updated on: 20 Nov 2017

Definition of momentum

plural momenta play \-ˈmen-tə\ or momentums
1 : a property (see property 1a) of a moving body that the body has by virtue of its mass (see 2mass 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.

Examples of momentum in a Sentence

  1. The company has had a successful year and hopes to maintain its momentum by introducing new products.

  2. The movie loses momentum toward the end.

Recent Examples of momentum from the Web

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.

Origin and Etymology of momentum

New Latin, from Latin, movement



MOMENTUM Defined for English Language Learners

momentum

noun

Definition of momentum for English Language Learners

  • : 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 Defined for Kids

momentum

noun mo·men·tum \ mō-ˈmen-təm \

Definition of momentum for Students

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

Medical Dictionary

momentum

noun mo·men·tum \ mō-ˈment-əm, mə-ˈment- \

medical Definition of momentum

plural momenta play \-ˈment-ə\ 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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