a composition often found on the chancel screen and consisting of the Virgin Mary (left) and John the Baptist (right) interceding with Christ (centre) on behalf of humanity

The Supplication. A triad of figures - Christ flanked by St John the Baptist and the Virgin

In Byzantine art, the Deesis is a traditional representation of Christ enthroned, flanked by Mary and St. John the Baptist, and sometimes angels. It is often found on the templon beam in Orthodox churches as well as above doors, though it also can appear on icons.

An invocation of, or address to, the Supreme Being.