'ecumenism' definitions:

Definition of 'ecumenism'

From: WordNet
noun
A movement promoting union between religions (especially between Christian churches) [syn: ecumenism, oecumenism]
noun
(Christianity) the doctrine of the ecumenical movement that promotes cooperation and better understanding among different religious denominations: aimed at universal Christian unity [syn: ecumenism, ecumenicism, ecumenicalism]

Synonyms of 'ecumenism'

From: Moby Thesaurus