1. Concerned with promoting unity among churches or religions
   "oecumenical thinking";
   - ecumenic, oecumenic [archaic], ecumenical
    
2. Of worldwide scope or applicability
   "an issue of oecumenical import";
   - cosmopolitan, ecumenical, general, universal, worldwide, world-wide, global

See also: comprehensive, nonsectarian, unsectarian

Encyclopedia: Oecumenical