A more thorough explanation:

Definition: Attermoiement is a term from Ecclesiastical law that means a composition or agreement.

Example: In the context of Ecclesiastical law, attermoiement can refer to an agreement between a bishop and a parishioner to settle a dispute or to a financial arrangement between a church and its members.

The example illustrates how attermoiement is used in the context of Ecclesiastical law to refer to a formal agreement or composition between parties.