In medical jurisprudence. Deraugement of a single faculty of the mind, or with regard to a particular subject the other faculties being in regular exercise. See INSANITY. Monopolia dicitur, cnm nnns solus ali- quod genus mercatur.-c universum emit, pretium ad suum libitum statuens. 11 Coke, 86. It is said to be a monopoly when one person alone buys up the whole of one kind of commodity, fixing a price at his own pleasure.