1. Having the power of driving or impelling; giving an impulse; moving; impellent. "Poor men! poor papers! We and they Do some impulsive force obey." (Prior)

2. Actuated by impulse or by transient feelings. "My heart, impulsive and wayward." (Longfellow)

3. <mechanics> Acting momentarily, or by impulse; not continuous; said of forces.

Origin: Cf. F. Impulsif.

(01 Mar 1998)