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Dictionary definition for: Impulse

1. (n) an instinctive motive; "profound religious impulses"

2. (n) a sudden desire; "he bought it on an impulse"

3. (n) the electrical discharge that travels along a nerve fiber; "they demonstrated the transmission of impulses from the cortex to the hypothalamus"

4. (n) (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"

5. (n) the act of applying force suddenly; "the impulse knocked him over"

6. (n) an impelling force or strength; "the car''s momentum carried it off the road"

WordNet 2.1 Copyright Princeton University. All rights reserved.