Agent and Medium

noun

• An active and efficient cause; capable of producing a certain effect.
  • usage: "their research uncovered new disease agents"
• A representative who acts on behalf of other persons or organizations.
• A substance that exerts some force or effect.
• A businessman who buys or sells for another in exchange for a commission.
  • synonyms: factor, broker
• Any agent or representative of a federal agency or bureau.
  • synonyms: federal agent
• The semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause.
  • synonyms: agentive role

• (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.

Agent is a person or institution that handles business and financial transactions between two other people, or between a person and an institution, is described as an agent. The person or institution that authorizes the action is the principal. For example, a brokerage firm employee who acts on your order to buy or sell stock is your agent in that trade, and you are the principal. Agents, particularly those working for brokerage firms, may also be referred to as financial consultants, account executives, registered representatives, or investment executives.

(DoD) In intelligence usage, one who is authorized or instructed to obtain or to assist in obtaining information for intelligence or counterintelligence purposes.

noun

• A means or instrumentality for storing or communicating information.
• The surrounding environment.
  • usage: "fish require an aqueous medium"
• An intervening substance through which signals can travel as a means for communication.
• Bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms.
  • synonyms: culture medium
• A liquid with which pigment is mixed by a painter.
• Biology) a substance in which specimens are preserved or displayed. (
• An intervening substance through which something is achieved.
  • usage: "the dissolving medium is called a solvent"
• A state that is intermediate between extremes; a middle position.
  • usage: "a happy medium"
• Someone who serves as an intermediary between the living and the dead.
  • usage: "he consulted several mediums"
  • synonyms: spiritualist, sensitive
• Usually plural. ( transmissions that are disseminated widely to the public)
  • synonyms: mass medium
• An occupation for which you are especially well suited.
  • usage: "in law he found his true metier"
  • synonyms: metier

adjective

• Around the middle of a scale of evaluation.
  • usage: "an orange of average size"; "intermediate capacity"; "medium bombers"
  • synonyms: average, intermediate
• Meat) cooked until there is just a little pink meat inside. (.

• (n.) See Mean.
• (n.) The liquid vehicle with which dry colors are ground and prepared for application.
• (n.) That which lies in the middle or between other things; intervening body or quantity. Hence, specifically: (a) Middle place or degree; mean.
• (n.) An average.
• (n.) The mean or middle term of a syllogism; that by which the extremes are brought into connection.
• (a.) Having a middle position or degree; mean; intermediate; medial; as, a horse of medium size; a decoction of medium strength.
• (n.) A trade name for printing and writing paper of certain sizes. See Paper.
• (n.) A substance through which an effect is transmitted from one thing to another; as, air is the common medium of sound. Hence: The condition upon which any event or action occurs; necessary means of motion or action; that through or by which anything is accomplished, conveyed or carried on; specifically, in animal magnetism, spiritualism, etc., a person through whom the action of another being is said to be manifested and transmitted.