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impulse
Definitions
[ˈɪmpʌls], (Noun)
Definitions:
- a sudden strong and unreflective urge or desire to act
(e.g: I had an almost irresistible impulse to giggle)
- something that causes something to happen or happen more quickly; an impetus
(e.g: an added impulse to this process of renewal)
- a pulse of electrical energy; a brief current
(e.g: nerve impulses)
- a force acting briefly on a body and producing a finite change of momentum
(e.g: ability to communicate motion by impulse)
Phrases:
- on impulse
Origin
:
early 17th century (as a verb in the sense ‘give an impulse to’): the verb from Latin impuls- ‘driven on’, the noun from impulsus ‘impulsion’, both from the verb impellere (see impel)
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definition by Oxford Dictionaries