A"gent (?), a. [L. agens,
agentis, p. pr. of agere to act; akin to Gr. ? to lead,
Icel. aka to drive, Skr. aj. √2.] Acting; --
opposed to patient, or sustaining, action. [Archaic] "The body
A"gent, n. 1. One who
exerts power, or has the power to act; an actor.
Heaven made us agents, free to good or ill.
2. 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.
3. 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.