ecumenical UK /ˌiːk.jʊˈmɛ.nɪ.kəl/US /ˌɛk.jʊˈmɛ.nɪ.kəl/ adjective2 •Pertaining to the universal Church, representing the entire Christian world; interdenominational; sometimes by extension, interreligious.Within Europe, the church's ecumenical partnerships have demonstrated that ecclesial unity may have political resonances. — 1999 •(rare) General; universal; catholic; worldwide.