[syn: momentum, impulse]
The Collaborative International Dictionary of English v.0.48:
Impulse \Im*pulse"\, v. t. [See Impel.]
To impel; to incite. [Obs.] --Pope.
[1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Impulse \Im"pulse\, n. [L. impulsus, fr. impellere. See
Impel.]
[1913 Webster]
1. The act of impelling, or driving onward with sudden force;
impulsion; especially, force so communicated as to
produced motion suddenly, or immediately.
[1913 Webster]
All spontaneous animal motion is performed by
mechanical impulse. --S. Clarke.
[1913 Webster]
2. The effect of an impelling force; motion produced by a
sudden or momentary force.
[1913 Webster]
3. (Mech.) The action of a force during a very small interval
of time; the effect of such action; as, the impulse of a
sudden blow upon a hard elastic body.
[1913 Webster]
4. A mental force which simply and directly urges to action;
hasty inclination; sudden motive; momentary or transient
influence of appetite or passion; propension; incitement;
as, a man of good impulses; passion often gives a violent
impulse to the will; to buy something on impulse.
[1913 Webster +PJC]
These were my natural impulses for the undertaking.
--Dryden.
Syn: Force; incentive; influence; motive; feeling;
incitement; instigation.
[1913 Webster]
WordNet (r) 3.0 (2006):
impulse
n 1: an instinctive motive; "profound religious impulses" [syn:
urge, impulse]
2: a sudden desire; "he bought it on an impulse" [syn:
caprice, impulse, whim]
3: the electrical discharge that travels along a nerve fiber;
"they demonstrated the transmission of impulses from the
cortex to the hypothalamus" [syn: nerve impulse, nervous
impulse, neural impulse, impulse]
4: (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" [syn: pulsation,
pulsing, pulse, impulse]
5: the act of applying force suddenly; "the impulse knocked him
over" [syn: impulse, impulsion, impetus]
6: an impelling force or strength; "the car's momentum carried
it off the road" [syn: momentum, impulse]