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momentum

Pronunciation: /məˈmɛntəm/

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Definition of momentum

noun (plural momenta /-tə/)

[mass noun]

1 Physics the quantity of motion of a moving body, measured as a product of its mass and velocity.

2the impetus gained by a moving object:the vehicle gained momentum as the road dipped
the impetus and driving force gained by the development of a process or course of events:the investigation gathered momentum in the spring