-caesarism-

n. [ Cf. F. Césarisme. ] A system of government in which unrestricted power is exercised by a single person, to whom, as Cæsar or emperor, it has been committed by the popular will; imperialism; also, advocacy or support of such a system of government. [ 1913 Webster ]

☞ This word came into prominence in the time of Napoleon III., as an expression of the claims and political views of that emperor, and of the politicians of his court. [ 1913 Webster ]