Well I’m frustrated. The article should have said up front what a dicastery is. Maybe I missed it in there.
One of the official Vatican congregations through which the Pope conducts the regular administration of the Catholic Church. Some examples are:
Congregation for the Doctrine of the Faith
Congregation for the Oriental Churches
Congregation for Divine Worship and the Discipline of the Sacraments
Congregation for the Causes of Saints
Congregation for the Evangelization of Peoples