Definition of Agent

1. Noun. An active and efficient cause; capable of producing a certain effect. "Their research uncovered new disease agents"

2. Noun. A representative who acts on behalf of other persons or organizations.

3. Noun. A substance that exerts some force or effect.

4. Noun. A businessman who buys or sells for another in exchange for a commission.

5. Noun. Any agent or representative of a federal agency or bureau.
Exact synonyms: Federal Agent
Specialized synonyms: Indian Agent, Fed, Federal, Federal Official, Trustbuster
Generic synonyms: Functionary, Official
Derivative terms: Agential

6. Noun. The semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause.
Exact synonyms: Agentive Role
Generic synonyms: Participant Role, Semantic Role

Definition of Agent

1. a. Acting; -- opposed to patient, or sustaining, action.

2. n. One who exerts power, or has the power to act; an actor.

Definition of Agent

1. Noun. One who exerts power, or has the power to act; an actor. ¹

2. Noun. One who acts for, or in the place of, another (the principal), by authority from him; one intrusted with the business of another; a substitute; a deputy; a factor. ¹

3. Noun. 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. ¹

4. Noun. (computing) In the client-server model, the part of the system that performs information preparation and exchange on behalf of a client or server. Especially in the phrase “intelligent agent” it implies some kind of autonomous process which can communicate with other agents to perform some collective task on behalf of one or more humans. ¹

5. Noun. (grammar) The participant of a situation that carries out the action in this situation, e.g. "the boy" in the sentences "The boy kicked the ball" and "The ball was kicked by the boy". ¹

¹ Source:

Definition of Agent

1. to act as a representative for [v -ED, -ING, -S] : AGENTIAL [adj]

Medical Definition of Agent

1. Any power, principle or substance capable of producing an effect, whether physical, chemical or biological. Origin: L. Agens = acting (18 Nov 1997)

Lexicographical Neighbors of Agent

agenesis of corpus callosum
agent (current term)
agent bank
agent noun
agent nouns
agent participle
agent participles
agent provocateur

Literary usage of Agent

Below you will find example usage of this term as found in modern and/or classical literature:

1. Report of the Congressional Committees Investigating the Iran/Contra Affair by Lee H. Hamilton, Daniel K. Inouye (1995)
"90 In July 1985, North asked a DEA agent (agent 1)—who was detailed to ... agent 1 agreed, and North arranged for payment of his travel expenses.91 The ..."

2. Reports of Cases Argued and Determined in the High Court of Chancery: During by Great Britain Court of Chancery, Edward Thurlow Thurlow, Alexander Wedderburn Rosslyn, Jonathan Cogswell Perkins (1845)
"LIEW of the agent in town upon the papers in his hands for what was due to ... A MOTION was made, that the former agent in town for the Defendants may be ..."

3. Science by American Association for the Advancement of Science (1883)
"I would like to consider briefly some of the practical problems associated with the development of such an "Orwellian" agent, which reduce the concept to an ..."

4. Transactions by Michigan State Medical Society (1880)
"A NEW THERAPEUTIC agent IN DISEASES OF THE EYE. BY CJ LUNDY, MD, ... This therapeutic agent is Duboisia myoporoides, obtained from an Australian shrub, ..."

5. Dictionary of National Biography by LESLIE. STEPHEN (1899)
"Apparently after his return to England he was appointed agent by Sir Ferdinando Gorges [qv], and then •went back to New England ..."

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