(Greek: kanon, rule)

A practical law or rule of guidance; a standard, or criterion; a catalog or list of such rules.

In art, an established rule.

In biblical usage, the official catalog of inspired writings known as the Old and New Testament See also: Canon of the Holy Scriptures.

In ecclesiastical usage, a short dogmatic definition, with an anathema attached, made by a general council; a rule of the Church. See also Canon Law; Canon Law, New Code of.

The fundamental part of the Mass, coming after the Offertory. See also Canon of the Mass.

The rules of religious orders and the books comprising these rules.

The catalog of canonized saints.

Certain ecclesiastical persons. See Canons, Chapters of; Canon Penitentiary; Canons and Canonesses Regular; Canons Regular of Saint Augustine; Canons Regular of the Immaculate Conception; Canons Regular of the Lateran.

In music, a composition consisting of the imitation or repetition of the same melody by one or more voices in turn, in such a manner as to produce harmony.