Simple English definitions for legal terms
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A provisor is someone who takes care of others or provides them with what they need. In the past, it was also a term used in the church to describe someone chosen by the pope to take over a position that was empty or soon to be empty.
Definition: A provisor is a person who provides care or sustenance. In Ecclesiastical law, a provisor is a person nominated by the pope to be the next incumbent of a benefice that is vacant or about to become vacant.
The first example illustrates the historical use of the term, where a provisor was responsible for providing care and sustenance. The second example illustrates the Ecclesiastical law use of the term, where a provisor is appointed to fill a vacant position in the church.