v. t. [ imp. & p. p. Mediatized p. pr. & vb. n. Mediatizing. ] [ Cf. F. médiatiser. ] To cause to act through an agent or to hold a subordinate position; to annex; -- specifically applied to the annexation during the former German empire of a smaller German state to a larger, while allowing it a nominal sovereignty, and its prince his rank. [ 1913 Webster ]

The misfortune of being a mediatized prince. Beaconsfield. [ 1913 Webster ]