n. The belief that there should be better understanding and closer co-operation between different denominations in the Christian Church.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. (Christianity) the doctrine of the ecumenical movement that promotes cooperation and better understanding among different religious denominations: aimed at universal Christian unity
Word Usage
"On the other hand, “ecumenicalism” (at a pretty broad level) is probably about right."