What is oecumenic?

Some articles on oecumenic:

Angoulême International Comics Festival Religious Award - 2000s
2000 Oecumenic jury award La terre sans mal by Lepage and Sibran, Dupuis 2000 Le prix de la bande dessinee chretienne La Bible by J Anderson and Mike Maddox, Pre-au Clerc ... du Signe Special mention Auriac by Marco Venanzi and Benoît Despas, Coccinelle BD 2003 Oecumenic jury award Le Chat du Rabin part 1 by Joann Sfar, Dargaud ...