Deipnon means ‘meal.’ In the first place it is a meal shared by those taking part in the sacrifice, at which the god was believed to be present. It is also a ‘sacred’ meal at which ‘consecrated’ food is eaten, and hence a sacrifice.
Jung identifies the meal as the sacramental core of sacrifice, distinguishing deipnon (shared meal with divine presence) from thysia (burnt offering), and showing how both are fused in the symbolism of the Mass.
, Psychology and Religion: West and East, 1958thesis