An
ecclesial community is, in Roman Catholic terminology, a Christian religious group that does not meet the Roman Catholic definition of a "Church". The Catholic Church applies the term "Church" in the proper sense only to Christian communities that, in the Catholic Church's view, "have true sacraments and above all – because of the
apostolic successionApostolic succession is a doctrine, held by some Christian denominations, which asserts that the chosen successors of the Twelve Apostles, from the first century to the present day, have inherited the spiritual, ecclesiastical and sacramental authority, power, and responsibility that were...
–
the priesthoodHoly Orders in the Catholic Church includes three orders: bishop, priest, and deacon. The Church regards ordination as a Sacrament. In the phrase "Holy Orders", the word "holy" simply means "set apart for some purpose." The word order designates an established civil body or corporation with a...
and the
EucharistThe Eucharist , also called Holy Communion, the Sacrament of the Altar, the Blessed Sacrament, the Lord's Supper, and other names, is a Christian sacrament or ordinance...
".
The Catholic Church formally recognizes as "Churches" of a nature similar to its own
particular ChurchIn Catholic canon law, a Particular Church is an ecclesial community headed by a bishop or someone recognised as the equivalent of a bishop.There are two kinds of particular Churches:# Local particular Churches ...
es (
dioceseA diocese is the district or see under the supervision of a bishop. It is divided into parishes.An archdiocese is more significant than a diocese. An archdiocese is presided over by an archbishop whose see may have or had importance due to size or historical significance...
s and autonomous or
sui iuris Churches) the Eastern Churches separated from
full communionIn Christian ecclesiology, full communion is a relationship between church organizations or groups that mutually recognize their sharing the essential doctrines....
with it, namely those of Eastern Orthodoxy,
Oriental OrthodoxyOriental Orthodoxy is the faith of those Eastern Christian Churches that recognize only three ecumenical councils — the First Council of Nicaea, the First Council of Constantinople and the First Council of Ephesus. They rejected the dogmatic definitions of the Council of Chalcedon...
, and
Church of the EastThe Church of the East tāʾ d-Maḏnḥāʾ), also known as the Nestorian Church, is a Christian church, part of the Syriac tradition of Eastern Christianity. Originally the church of the Persian Sassanid Empire, it quickly spread widely through Asia...
. It has not denied the claim of some communities of
Western ChristianityWestern Christianity is a term used to include the Latin Rite of the Catholic Church and groups historically derivative thereof, including the churches of the Anglican and Protestant traditions, which share common attributes that can be traced back to their medieval heritage...
to meet the Roman Catholic Church's definition of "Church" (an example is the
Polish National Catholic ChurchThe Polish National Catholic Church is a Christian church founded and based in the United States by Polish-Americans who were Roman Catholic. The PNCC is a breakaway Catholic Church in dialogue with the Catholic Church; it seeks full communion with the Holy See although it differs theologically...
). Indeed, by referring to "The Separated Churches and Ecclesial Communities in the West", the
Second Vatican CouncilThe Second Vatican Council addressed relations between the Roman Catholic Church and the modern world. It was the twenty-first Ecumenical Council of the Catholic Church and the second to be held at St. Peter's Basilica in the Vatican. It opened under Pope John XXIII on 11 October 1962 and closed...
recognized the existence of some Western Churches that are not in full communion with the
see of RomeThe Holy See is the episcopal jurisdiction of the Catholic Church in Rome, in which its Bishop is commonly known as the Pope. It is the preeminent episcopal see of the Catholic Church, forming the central government of the Church. As such, diplomatically, and in other spheres the Holy See acts and...
.
However, the Catholic Church expressly excludes "those Christian communities born out of the
ReformationThe Protestant Reformation was a 16th-century split within Western Christianity initiated by Martin Luther, John Calvin and other early Protestants. The efforts of the self-described "reformers", who objected to the doctrines, rituals and ecclesiastical structure of the Roman Catholic Church, led...
of the sixteenth century", since, according to Catholic doctrine, these communities do not enjoy
apostolic successionApostolic succession is a doctrine, held by some Christian denominations, which asserts that the chosen successors of the Twelve Apostles, from the first century to the present day, have inherited the spiritual, ecclesiastical and sacramental authority, power, and responsibility that were...
in the
sacrament of OrdersHoly Orders in the Catholic Church includes three orders: bishop, priest, and deacon. The Church regards ordination as a Sacrament. In the phrase "Holy Orders", the word "holy" simply means "set apart for some purpose." The word order designates an established civil body or corporation with a...
, and therefore lack a constitutive element of the Church. This includes the
Anglican CommunionThe Anglican Communion is an international association of national and regional Anglican churches in full communion with the Church of England and specifically with its principal primate, the Archbishop of Canterbury...
, the validity of whose Orders and consequently of whose Eucharist the Roman Catholic Church has declared "absolutely null and utterly void". This judgement, as enunciated in the papal bull
Apostolicae CuraeApostolicae Curae is the title of a papal bull, issued in 1896 by Pope Leo XIII, declaring all Anglican ordinations to be "absolutely null and utterly void"...
of 1896, has been given as an example of a truth connected to revelation that is to be held definitively.