- an ecclesiastical rule or law enacted by a council or other competent authority and, in the Roman Catholic Church, approved by the pope.
- the body of ecclesiastical law.
- the body of rules, principles, or standards accepted as axiomatic and universally binding in a field of study or art: the neoclassical canon.
- a fundamental principle or general rule: the canons of good behavior.
- a standard; criterion: the canons of taste.
- the books of the Bible recognized by any Christian church as genuine and inspired.
- any officially recognized set of sacred books.
- any comprehensive list of books within a field.
- the works of an author that have been accepted as authentic: There are 37 plays in the Shakespeare canon.
- established or agreed-upon constraints governing the background narrative, setting, storyline, characters, etc., in a particular fictional world: It’s accepted as canon that vampires are harmed by sunlight.
- a catalog or list, as of the saints acknowledged by the Church.
- the part of the Mass between the Sanctus and the Communion.
- a liturgical sequence sung at matins, usually consisting of nine odes arranged in a fixed pattern.
- consistent, note-for-note imitation of one melodic line by another, in which the second line starts after the first.
- a 48-point type.
- one of a body of dignitaries or prebendaries attached to a cathedral or a collegiate church; a member of the chapter of a cathedral or a collegiate church.
- one of the members (canons regular ) of certain religious orders.
- a Church decree enacted to regulate morals or religious practices
- a general rule or standard, as of judgment, morals, etc
- a principle or accepted criterion applied in a branch of learning or art
- the complete list of the canonized saints
- the prayer in the Mass in which the Host is consecrated
- a list of writings, esp sacred writings, officially recognized as genuine
- a piece of music in which an extended melody in one part is imitated successively in one or more other parts
- a list of the works of an author that are accepted as authentic
- (formerly) a size of printer's type equal to 48 point
- one of several priests on the permanent staff of a cathedral, who are responsible for organizing services, maintaining the fabric, etc
- a member of either of two religious orders, the Augustinian or Premonstratensian Canons, living communally as monks but performing clerical duties
- a variant spelling of canyon