nEuchology(Eccl) A formulary of prayers; the book of offices in the Greek Church, containing the liturgy, sacraments, and forms of prayers.
Century Dictionary and Cyclopedia
neuchologyThe book which contains the ritual of the Greek Church for the celebration of the eucharist and other sacraments, and for all ecclesiastical ceremonies, corresponding to the Missal, Pontifical, and Ritual of the Latin Church; more generally, any liturgy.
Webster's Revised Unabridged Dictionary
NL. euchologion, Gr. prayer book; prayer, vow (fr. to pray) + to say, speak