momentum: Meaning and Definition of
Pronunciation: (mō-men'tum), [key]
— pl. -ta -tums.
- force or speed of movement; impetus, as of a physical object or course of events: The car gained momentum going downhill. Her career lost momentum after two unsuccessful films.
- a quantity expressing the motion of a body or system, equal to the product of the mass of a body and its velocity, and for a system equal to the vector sum of the products of mass and velocity of each particle in the system.
- moment (def. 7).
- momentum (Thesaurus)