- impulse (n.)
[impulse 词源字典]
- early 15c., "an act of impelling, a thrust, push," from Latin impulsus "a push against, pressure, shock," also "incitement, instigation, impulse," past participle of impellere (see impel). Meaning "stimulus in the mind arising from some state or feeling" first recorded 1640s.[impulse etymology, impulse origin, 英语词源]