adj. & n.
adj. 1 a according to or ordered by canon law. b included in the canon of Scripture. 2 authoritative, standard, accepted. 3 of a cathedral chapter or a member of it. 4 Mus. in canon form.
n. (in pl.) the canonical dress of the clergy. canonical hours Eccl. the times fixed for a formal set of prayers or for the celebration of marriage. canonically adv.
[ med.L canonicalis (as CANONIC) ]