- (n.) One who acts for or in the place of, another, by authority from him; one intrusted with the business of another; a substitute; a deputy; a factor.
- (n.) One who exerts power or has the power to act; an actor.
- (n.) An active power or cause; that which has the power to produce an effect; as, a physical, chemical or medicinal agent; as, heat is a powerful agent.
- (a.) Acting; -- opposed to patient or sustaining, action.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). agent. Retrieved September 20, 2026, from http://smartdefine.org/agent/definitions/1971700 |
| Chicago | Webster's. 2011. "agent" http://smartdefine.org/agent/definitions/1971700 (accessed September 20, 2026). |
| Harvard | Webster's 2011, agent, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/agent/definitions/1971700>. |
| MLA | Webster's. "agent" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/agent/definitions/1971700> |