Agent definitions

ā'jənt
An agent is defined as someone or something that makes something happen.

A bee taking pollen from flower to flower is an example of the bee being an agent for pollination.

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The definition of an agent is a person or group of people that represent another person or that takes action for other people.

Someone who schedules appearances for a musical group is an example of an agent.

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One that acts or has the power or authority to act.
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One empowered to act for or represent another.

An author's agent; an insurance agent.

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A means by which something is done or caused; an instrument.
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A force or substance that causes a change.

A chemical agent; an infectious agent.

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A representative or official of a government or administrative department of a government.

An FBI agent.

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A spy.
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The argument that expresses the means or cause of an action or event described by a phrase or clause. The noun John is the agent in the clause John threw the ball.
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To act as an agent or representative for.

Who will agent your next book?

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To act as an agent or representative.
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A person or thing that performs an action or brings about a certain result, or that is able to do so.
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An active force or substance producing an effect.

A chemical agent.

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A person, firm, etc. empowered to act for another.
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A representative of a government agency.

Revenue agent.

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A traveling salesperson.
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The word or words designating the person or thing that performs the action of the verb in a sentence.
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To act or work as an agent (on)
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A substance that can bring about a chemical reaction or a biological effect.
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A software routine that waits in the background and performs an action when a specified event occurs. For example, agents could transmit a summary file on the first day of the month or monitor incoming data and alert the user when a certain transaction has arrived. Agents are also called "intelligent agents," "personal agents" and "bots." See mobile agent, bot and workflow.
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One who by mutual consent is authorized to act for another. See agency, authority, and principal.
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One who exerts power, or has the power to act; an actor.
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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.
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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.
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(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.
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(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".
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Origin of agent

Middle English from Latin agēns agent- present participle of agere to do ag- in Indo-European roots