A type of market structure where there is only ONE buyer and many sellers. An example of pure monopsony is a firm that is the only buyer of labour in an isolated town. Such a firm is able to pay lower wages than it would under competition. Although cases of pure monopsony are rare, monopsonistic elements are found wherever there are many sellers and few buyers. Monopsonies, like monopolies and oligopolies, are a form of imperfect competition.