ecclesiastical mode(n = noun.communication) church mode, gregorian mode, medieval mode - any of a system of modes used in Gregorian chants up until 1600; derived historically from the Greek mode;
is a kind of mode, musical mode

a la mode, asynchronous transfer mode, church mode, ecclesiastical, ecclesiastical attire, ecclesiastical benefice, ecclesiastical calendar, ecclesiastical law, ecclesiastical province, ecclesiastical robe, greek mode, gregorian mode, major mode, medieval mode, minor mode, mixolydian mode, mode, musical mode