What is "ecclesiastical province"

n. the district within the jurisdiction of an archbishop or a metropolitan or one of the territorial divisions of an ecclesiastical orderi; "the general of the Jesuits has several provinces under him"

An ecclesiastical province is a large jurisdiction of religious government, so named by analogy with the secular Roman province. In hierarchical Christian churches that have dioceses, a province is a collection of those dioceses. The Roman Catholic Church (both Latin and Eastern Catholic), the Orthodox Churches and the Anglican Communion all have provinces. These provinces are led by a metropolitan archbishop.

In the early church and in some modern churches, an ecclesiastical province's principal episcopal see is called the metropolis and its bishop is called the metropolitan bishop or metropolitan.