Ecumenism
The term ecumenical comes from the Latin oecumenicus, a phrase referring to "the whole world", meaning literally "inhabited" (lived in). In Christianity the qualification ecumenical is originally (and still) used in terms such as Ecumenical council and Ecumenical patriarch. The meaning pertains to the totality of the larger Church (such as the Catholic Church or the Orthodox Church). It is not restricted to one of its local churches or dioceses.