Main Entry: mo·men·tum

Pronunciation: \mō-ˈmen-təm, mə-\

Function: noun

Inflected Form(s): plural mo·men·ta \-ˈmen-tə\ or momentums

Etymology: New Latin, from Latin, movement

Date: 1610

1 : 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 or moment
2 : strength or force gained by motion or through the development of events : impetus <the campaign gained momentum>