momentum
/məʊˈmentəm/noun
(pl. momenta /məʊˈmentə/ ) ［mass noun］
1
- Physics the quantity of motion of a moving body, measured as a product of its mass and velocity【物理】动量; 冲量。
2
- the impetus gained by a moving object冲力, 势头：
the vehicle gained momentum as the road dipped.
下坡时, 车辆冲力增大。
2.1
- the impetus and driving force gained by the development of a process or course of events动力; 势头：
the investigation gathered momentum in the spring.
春天调查力度加大了。
词源
late 17th cent.: from Latin, from movimentum, from movere 'to move'.