Characterized by or having power and authority vested equally among colleagues: "He . . . prefers a collegial harmony that will present him with a consensus on the issues"(Time).
Roman Catholic Church Characterized by the equal sharing of power among the bishops.
Of, relating to, characterized by, or likened to college life; collegiate: collegial rituals like homecoming.
[Middle English, from Latin collēgiālis, of colleagues, from collēgium, association; see collegium.] col·le'gi·al·ly adv.