Eucharist (Gr. eucharistia, thanksgiving), the name given to the Blessed Sacrament of the Altar under its twofold aspect of sacrament and Sacrifice of the Mass, and in which, whether as sacrament or sacrifice, Jesus Christ is truly present under the appearances of bread and wine. Other titles are used, such as the “Lord’s Supper” (Coena Domini), “Table of the Lord” (Mensa Domini), the “Lord’s Body” (Corpus Domini), and the “Holy of Holies” (Sanctissimum), to which may be added the following expressions, now obsolete and somewhat altered from their primitive meaning: “Agape” (Love-Feast), “Eulogia” (Blessing), “Breaking of Bread”, “Synaxis” (Assembly), etc.; but the ancient title “Eucharistia”, appearing in writers as early as Ignatius, Justin, and Irenaeus, has taken precedence in the technical terminology of the Church and her theologians.
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