| 单词 | momentum |
| 释义 | momentum /moh men"teuhm/, n. , pl. momenta /-teuh/, momentums. 1. 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. 2. Mech. 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. 3. Philos. moment (def. 7). [1690-1700; < L momentum; see MOMENT] |
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