n. A proposition, scheme, or treatise designed to promote peace, especially in the church.n. plural The deacon's litany (diaconica) or great synapte at the beginning of the liturgy of the Greek Church: named from the petitions “In peace let us pray of the Lord … For the peace from above … For the peace of the whole world … let us pray, etc.” (response “Kyrie eleison”), with which it opens.