canon

A generally accepted principle; a rule.

A formally codified set of criteria deemed mandatory for a particular artistic style of figurative art.

A group of literary works that are generally accepted as representing a field.

The works of a writer that have been accepted as authentic.

A eucharistic prayer, particularly the Roman Canon.

A religious law or body of law decreed by the church.

A catalogue of saints acknowledged and canonized in the Roman Catholic Church.

In monasteries, a book containing the rules of a religious order.

A piece of music in which the same melody is played by different voices, but beginning at different times; a round.

A rent or stipend payable at some regular time, generally annual, e.g., canon frumentarius