Noun
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an impelling force or strength
"the car's momentum carried it off the road"
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the act of applying force suddenly
"the impulse knocked him over"
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(electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
"the pulsations seemed to be coming from a star"
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the electrical discharge that travels along a nerve fiber
"they demonstrated the transmission of impulses from the cortex to the hypothalamus"
- nerve impulse - nervous impulse - neural impulse -
a sudden desire
"he bought it on an impulse"
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an instinctive motive
"profound religious impulses"