Economic Definition of monopoly. Defined.
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Term monopoly Definition: A market structure characterized by a single seller of a unique product with no close substitutes. This is one of four basic market structures. The other three are perfect competition, oligopoly, and monopolistic competition. As the single seller of a unique good with no close substitutes, a monopoly firm essentially has no competition. The demand for a monopoly firm's output is THE market demand. This gives the firm extensive market control--the ability to control the price and/or quantity of the good sold--making a monopoly firm a price maker. However, while a monopoly can control the market price, it can not charge more than the maximum demand price that buyers are willing to pay.