Definition of "eulogia" [eulogia]

• In the early church: The sacrament of the Lord's supper. (noun)
• Later, the name of the portion of the eucharist sent to the sick, or by bishops to other bishops and churches as a token of Christian love. These practices were early discontinued, because of the growing reverence for the elements. (noun)
• Later still, the name given to the unconsecrated bread not needed in the eucharist, but blessed and distributed as a substitute for the eucharist among those members of the congregation who, though they had the right to take the communion, did not commune. This custom still exists in the Greek Church. Also called antidoron (which see). Also eulogy. (noun)

The Century Dictionary (Public Domain)

• "The word eulogia has a special use in connexion with monastic life."
• "It is called “The cup of blessing,’’ or “The cup of thanksgiving;” — the word eulogia is used promiscuously for"
• "This bread is called eulogia, because it is blessed and because a blessing accompanies its use; it is also called antidoron, because it is a substitute for the doron, the real gift, which is the Holy Eucharist."