Catechism of the Catholic Church

The inexhaustible richness of this sacrament is expressed in the different names we give it. Each name evokes certain aspects of it. It is called: (2637, 1082, 1359) Eucharist, because it is an action of thanksgiving to God. The Greek words eucharistein and eulogein recall the Jewish blessings that proclaim-especially during a meal-God's works: creation, redemption, and sanctification.