Meaning of IMPULSE in English

IMPULSE

n.1 the act or an instance of impelling; a push.

2 an impetus.

3 Physics a an indefinitely large force acting for a very short time but producing a finite change of momentum (e.g. the blow of a hammer). b the change of momentum produced by this or any force.

4 a wave of excitation in a nerve.

5 mental incitement.

6 a sudden desire or tendency to act without reflection (did it on impulse).

Phrases and idioms:

impulse buying the unpremeditated buying of goods as a result of a whim or impulse.

Etymology: L impulsus (as IMPEL)

Oxford English vocab.      Оксфордский английский словарь.