from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a movement promoting union between religions (especially between Christian churches)
Sorry, no etymologies found.
But you absolutely cannot accuse him of being unorthodox and merely wanting oecumenism for show.
And they have not compromised doctrine, but rather ensured that it is legitimate to ask tough questions about oecumenism and the like within the 'mainstream' - even if they do not go so far as to issue scathing critiques of the Supreme Pontiff every few weeks, which is not becoming of a Catholic ask Girolamo Savonarola.