me·di·a·tize (mē'dē-ə-tīz') tr.v.
me·di·a·tized, me·di·a·tiz·ing, me·di·a·tiz·es To annex (a lesser state) to a greater state as a means of permitting the ruler of the lesser state to retain title and partial authority.
[Probably French médiatiser, from médiat, dependent, from Old French, back-formation from immediat, independent, from Late Latin immediātus; see immediate.] me'di·a·ti·za'tion (-tĭ-zā'shən) n.