what is A monopoly
Definition of 'Monopoly'. Tweet. A market structure characterized by a single seller, selling a unique product in the market. Definition: A market structure characterized by a single seller, selling a unique product in the market.In a monopoly market, the seller faces no competition, as he is the sole seller of goods with no close substitute.weet. A market structure characterized by a single seller, selling a unique product in the market. Definition: A market structure characterized by a single seller, selling a unique product in the market. In a monopoly market, the seller faces no competition, as he is the sole seller of goods with no close substitute.