canonical >> /kəˈnɑnək(ə)l/
Definition: [adjective] According to or ordered by canon law.
Example: the canonical rites of the Roman Church
Definition: [adjective] Included in the list of sacred books officially accepted as genuine.
Example: the canonical Gospels of the New Testament
Definition: [adjective] Relating to a cathedral chapter or a member of it.
Example: Meanwhile on the churchly front, he served as canonical counselor and defender of the first Episcopal women priests irregularly ordained.
Definition: [plural noun] The prescribed official dress of the clergy.
Example: Cardinal Bea in full canonicals