The Collaborative International Dictionary
Mediatize \Me"di*a*tize\, v. t. [imp. & p. p. Mediatized; p. pr. & vb. n. Mediatizing.] [Cf. F. m['e]diatiser.] 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.
The misfortune of being a mediatized prince.
--Beaconsfield.
Wiktionary
alt. (present participle of mediatize English) vb. (present participle of mediatize English)
Usage examples of "mediatizing".
It's just that Hesse and Wuerttemberg have been more successful at mediatizing them—well, at mediatizing us, since I am a member of the Hessian nobility—than most other principalities.
And that he would be willing to grant a substantial number of the Twelve Points if the ram proved cooperative in the project of mediatizing the lower nobility.