Canon (canon law) in the context of Lex (canon law)

The term canon derives from the Greek κανών (kanon), meaning "rule", and thence via Latin and Old French into English. The concept in English usage is very broad: in a general sense it refers to being one (adjectival) or a group (noun) of official, authentic or approved rules or laws, particularly ecclesiastical; or group of official, authentic, or approved literary or artistic works, such as the literature of a particular author, of a particular genre, or a particular group of religious scriptural texts; or similarly, one or a body of rules, principles, or standards accepted as axiomatic and universally binding in a religion, or a field of study or art.

The 1983 Code of Canon Law (abbreviated 1983 CIC from its Latin title Codex Iuris Canonici), also called the Johanno-Pauline Code, is the "fundamental body of ecclesiastical laws for the Latin Church". It is the second and current comprehensive codification of canonical legislation for the Latin Church of the Catholic Church. The 1983 Code of Canon Law was promulgated on 25 January 1983 by John Paul II and took legal effect on the First Sunday of Advent (27 November) 1983. It replaced the 1917 Code of Canon Law which had been promulgated by Benedict XV on 27 May 1917. According to canon 6, the 1983 code of canon law abrogates the 1917 code of canon law and any penal laws made under it that are not contained in the 1983 code.

The 1983 Code of Canon Law is composed of laws called canons.

The Code of Canons of the Eastern Churches (CCEC; Latin: Codex Canonum Ecclesiarum Orientalium, abbreviated CCEO) is the title of the 1990 work which is a codification of the common portions of the canon law for the 23 Eastern Catholic Churches in the Catholic Church. It is divided into 30 titles and has a total of 1546 canons. The code entered into force in 1991.

The western Latin Church is governed by its own particular code, the 1983 Code of Canon Law.

Canon law (from Ancient Greek: κανών, kanon, a 'straight measuring rod, ruler') is a set of ordinances and regulations made by ecclesiastical authority (church leadership) for the government of a Christian organization or church and its members.

Canon law includes the internal ecclesiastical law, or operational policy, governing the Catholic Church (both the Latin Church and the Eastern Catholic Churches), the Eastern Orthodox and Oriental Orthodox churches, and the individual national churches within the Anglican Communion. The way that such church law is legislated, interpreted and at times adjudicated varies widely among these four bodies of churches. In all three traditions, a canon was originally a rule adopted by a church council; these canons formed the foundation of canon law.

The Apostolic Canons, also called Apostolic canons (Latin: Canones apostolorum, "Canons of the Apostles"), Ecclesiastical Canons of the Same Holy Apostles, or Canons of the Holy Apostles, is a 4th-century Syrian Christian text. It is an Ancient Church Order, a collection of ancient ecclesiastical canons concerning the government and discipline of the Early Christian Church, allegedly written by the Apostles. This text is an appendix to the eighth book of the Apostolic Constitutions. Like the other Ancient Church Orders, the Apostolic Canons uses a pseudepigraphic form.

These eighty-five canons were approved by the Council in Trullo in 692 but were rejected by Pope Sergius I. In the Western Church only fifty of these canons circulated, translated in Latin by Dionysius Exiguus in about 500 AD, and included in the Western collections and afterwards in the Corpus Juris Canonici.

The Collectiones canonum Dionysianae (Latin for Dionysian collections of canons), also known as Collectio Dionysiana or Dionysiana Collectio ("Dionysian Collection"), are the several collections of ancient canons prepared by a Scythian monk, Dionysius 'the humble' (exiguus). They include the Collectio conciliorum Dionysiana I, the Collectio conciliorum Dionysiana II, and the Collectio decretalium Dionysiana. They are of the utmost importance for the development of the canon law tradition in the West.

Towards 500 a Scythian monk, known as Dionysius Exiguus, who had come to Rome after the death of Pope Gelasius (496), and who was well skilled in both Latin and Greek, undertook to bring out a more exact translation of the canons of the Greek church councils. In a second effort, he collected papal decretals from Siricius (384-89) to Anastasius II (496-98) included (, anterior therefore, to Pope Symmachus (498-514)). By order of Pope Hormisdas (514-23), Dionysius made a third collection, in which he included the original text of all the canons of the Greek councils, together with a Latin version of the same; but the preface alone has survived. Finally, he combined the first and second in one collection, which thus united the canons of the councils and the papal decretals; it is in this shape that the work of Dionysius has reached us.