\Im*pul"sion\, n. [L. impulsio: cf. F. impulsion. See
{Impel}.]
1. The act of impelling or driving onward, or the state of
   being impelled; the sudden or momentary agency of a body
   in motion on another body; also, the impelling force, or
   impulse. ``The impulsion of the air.'' --Bacon.
2. Influence acting unexpectedly or temporarily on the mind;
   sudden motive or influence; impulse. ``The impulsion of
   conscience.'' --Clarendon. ``Divine impulsion prompting.''
   --Milton.