Origin: Latin suffix -ment
Ecumenical movement has 2 different meanings across 1 category:
a movement aimed to promote understanding and cooperation among Christian churches; aimed ultimately at universal Christian unity
a movement among Protestant groups since the 1800s aimed at achieving universal Christian unity through international or interdenominational organizations. There are also Ecumenical Councils in the Roman Catholic church; since the Great Schism (1054), the Eastern churches have not been involved.