| 单词 | impetus |
| 释义 | impetus /im"pi teuhs/, n. , pl. impetuses. 1. a moving force; impulse; stimulus: The grant for building the opera house gave impetus to the city's cultural life. 2. (broadly) the momentum of a moving body, esp. with reference to the cause of motion. [1650-60; < L: an attack, lit., a rushing into, perh. by haplology from *impetitus (though the expected form would be *impetitus; see APPETITE), equiv. to impeti-, var. s. of impetere to attack (im- IM-1 + petere to make for, assault) + -tus suffix of v. action] Syn. 1. stimulation, spur, boost. |
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