investiture

(countable, uncountable) The act of investing, as with possession or power; formal bestowal or presentation of a possessory or prescriptive right.
(countable, historical, specifically, uncountable) The formal installation or, generally, the appointment of a bishop, or (uncountable) bishops in general.
(countable, uncountable) That which invests or clothes; covering; vestment.
(Spanish, countable, uncountable) The parliamentary vote required to inaugurate the Prime Minister of Spain.