Merriam-Webster Collegiate Dictionary - ecumenical

 adjective  Etymology: Late Latin oecumenicus, from Late Greek oikoumenikos, from Greek oikoumene the inhabited world, from feminine of oikoumenos, present passive participle of oikein to inhabit, from oikos house — more at vicinity  Date: circa 1587  1. worldwide or general in extent, influence, or application  2.  a. of, relating to, or representing the whole of a body of churches  b. promoting or tending toward worldwide Christian unity or cooperation  • ~ly adverb