Webster's Revised Unabridged Dictionary · 1913

Impulsion

Impulsion , noun

[Latin impulsio: compare French 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