canonical

adjective

• 1according to or ordered by canon law:the canonical rites of the Roman Church

• 2included in the list of sacred books officially accepted as genuine:the canonical Gospels of the New Testament
• accepted as being accurate and authoritative:the canonical method of comparative linguistics
• (of a writer or work) belonging to the literary canon:canonical writers like Jane Austen
• according to recognized rules or scientific laws:canonical nucleotide sequences
• Mathematics relating to a general rule or standard formula.

• 3relating to a cathedral chapter or a member of it: his college tutors were later his canonical colleagues

noun

• the prescribed official dress of the clergy:Cardinal Bea in full canonicals