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From Wikipedia, the free encyclopedia

Agent may refer to the following:


In philosophy

In sociology

In espionage and law enforcement

  • Agent provocateur, person employed by the police or other entity to act undercover to entice or provoke another person to commit an illegal act
  • Double agent, counterintelligence term for someone who pretends to spy on a target organization on behalf of a controlling organization, but in fact is loyal to the target organization
    • Triple agent, pretends to be a double agent for the target organization, but in fact is working for the controlling organization all along
  • Special agent, title for a detective or investigator for a state, county, municipal, federal or tribal government
  • Secret agent, spy involved in espionage

In law

  • Agent (law), in Commercial Law, is a person who is authorised to act on behalf of another (called the Principal) to create a legal relationship with a Third Party
    • Election agent, person legally responsible for the conduct of a candidate's political campaign (UK)
    • Free agent, sports player whose contract with a team has expired
    • Literary agent, person who represents writers and their written works to publishers, theatrical producers and film producers
    • Press agent, professional publicist who acts on behalf of his or her client on all matters involving public relations
    • Sports agent, person who procures and negotiates employment and endorsement deals for a player
    • Talent agent or booking agent, person who finds jobs for actors, musicians and models, etc., in various entertainment businesses
    • Foreign agent, person representing the interests of foreign powers, mandated by the Foreign Agents Registration Act to be identified to the American public
    • Patent agent or patent attorney, person who has the specialized qualifications necessary for representing clients in obtaining patents and acting in all matters and procedures relating to patent law and practice
    • Real estate agent or real estate broker, person who acts as an intermediary between sellers and buyers of real estate
    • Travel agent, person who works on behalf of a travel agency
    • Tuition agent, person who works on behalf of a tuition agency, specializing in introducing tutors to students requiring help in the academic area
    • Yacht agent or yacht broker, specialist who acts as a representative for the sale of a yacht or boat

In economics

  • Agent (economics), actor and decision maker in a model
    • Homo economicus, concept in some economic theories of humans as rational and broadly self-interested actors
  • Agent-Based Computational Economics, computational study of economic processes modeled as dynamic systems of interacting agents
  • Rational agent, entity which has clear preferences, models uncertainty via expected values, and always chooses to perform the action that results in the optimal outcome for itself from among all feasible actions
  • Representative agent, refers to the typical decision-maker of a certain type

In science

In medicine

In chemistry and warfare

  • Agent Orange, code name for an herbicide and defoliant
  • Biological agent, infectious disease or toxin that can be used in bioterrorism or biological warfare
  • Chemical warfare, involves using the toxic properties of chemical substances as weapons to kill, injure, or incapacitate an enemy
    • Blister agent or vesicant, chemical compound that causes severe skin, eye and mucosal pain and irritation
    • Blood agent or cyanogen agent, chemical compound carried by the blood for distribution throughout the body
    • Incapacitating agent, agent that produces temporary physiological or mental effects, or both, which will render individuals incapable of concerted effort in the performance of their assigned duties
    • Nerve agent or nerve gases, class of phosphorus-containing organic chemicals (organophosphates) that disrupt the mechanism by which nerves transfer messages to organs
    • Pulmonary agent or choking agent, chemical weapon agent designed to impede a victim's ability to breathe
    • Riot control agent, less-lethal lachrymatory agents used for riot control

In linguistics

  • Agent (grammar), the participant of a situation that carries out the action in this situation; also the name of the thematic role (also known as the thematic relation)
  • Agent noun (or nomen agentis), word that is derived from another word denoting an action, and that identifies an entity that does that action

In computer science and artificial intelligence

  • Agent architecture, blueprint for software agents and intelligent control systems, depicting the arrangement of components
  • Agent-based model, computational model for simulating the actions and interactions of autonomous individuals with a view to assessing their effects on the system as a whole
  • Intelligent agent, autonomous entity which observes and acts upon an environment and directs its activity towards achieving goals
  • Software agent, piece of software that acts for a user or other program in a relationship of agency
    • Forté Agent, email and Usenet news client used on the Windows operating system
    • User agent, the client application used with a particular network protocol

In culture and entertainment

See also

1911 encyclopedia

Up to date as of January 14, 2010

From LoveToKnow 1911

AGENT (from Lat. agere, to act), a name applied generally to any person who acts for another. It has probably been adopted from France, as its function in modern civil law was otherwise expressed in Roman jurisprudence. Ducange (s.v. A genies) tells us that in the later Roman empire the officers who collected the grain in the provinces for the troops and the household, and afterwards extended their functions so as to include those of government postmasters or spies, came to be called agentes in rebus, their earlier name having been frumentarii. In law an agent is a person authorized, expressedly or impliedly, to act for another, who is thence called the principal, and who is, in consequence of, and to the extent of, the authority delegated by him, bound by the acts of his agent. (See PRINCIPAL AND AGENT FACTOR, &C.) In Scotland the procurators or solicitors who act in the preparation of cases in the various law-courts are called agents.

(See SOLICITOR.) In France the agents de change were formerly the class generallylicensed for conducting all negotiations, as they were termed, whether in commerce or the money market. The term has, however, become practically limited to those who conduct transactions in public stock. The laws and regulations as to courtiers, or those whose functions were more distinctly confined to transactions in merchandise, have been mixed up with those applicable to agents de change. Down to the year 1572 both functions were free; but at that period, partly for financial reasons, a system of licensing was adopted at the suggestion of the chancellor, l'Hopital. Among the other revolutionary measures of the year 17 9 1, the professions of agent and courtier were again opened to the public. Many of the financial convulsions of the ensuing years, which were due to more serious causes, were attributed to this indiscriminate removal of restrictions, and they were reimposed in 1801. From that period regulations have been made from time to time as to the qualifications of agents, the security to be found by them and the like. They are now regarded as public officers, appointed, with certain privileges and duties, by the government to act as intermediaries in negotiating transfers of public funds and commercial stocks and for dealing in metallic currency. (See STOCK EXCHANGE: France.) In diplomacy the term "agent" was originally applied to all "diplomatic agents," including ambassadors. With the evolution of the diplomatic hierarchy, however, the term gradually sank until it was technically applied only to the lowest class of "diplomatic agents," without a representative character and of a status and character so dubious that, by the regulation of the congress of Vienna, they were wholly excluded from the immunities of the diplomatic service. (See DIPLOMACY.)

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Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

See also agent


German Wikipedia has articles on:

Wikipedia de


Agent m. (genitive Agenten, plural Agenten)

  1. agent (intermediary for certain services, such as for artistic performances or public relations)
  2. agent, spy (person working for a secret service)

Simple English

An Agent, a person who acts on behalf of another person.

  • literary agent, a person who represents a writer
  • sports agent, a professional who represents an athlete
  • talent agent, a person who finds jobs for actors, models, and other people in various entertainment businesses.

Agent can also mean:

  • Espionage, secret agent, a spy
  • Free agent, a sports player who is out of contract
  • Real estate broker, or real estate agent
In science
In fiction
  • Agents, characters in The Matrix
  • Secret Agent, a 1936 film

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