The three-hour intervals of daytime religious services appointed by canon law. / (Christianity) The divine office or prayers appointed to each of these times of day.

(uncountable) The law of the church, religious law. / (countable) A regulation in church law.

plural of canon law / Religious rules, regulations and edicts.

(mathematics) A formalism for a physical theory which is based upon the canonical equations of Hamiltonian dynamics.

(music) A contrapuntal composition in which one melody is superimposed on the same melody in reverse

plural of canonical form

(Christianity) A cleric in orders, attached to a cathedral and having the duty of assisting the canons in singing divine service.

(Christianity) The obedience, as regulated by the canons, of one ecclesiastic to another of higher rank.

(Roman Catholicism) The oldest anaphora used in the Roman rite of Mass.

(psychology, zoology) A fundamental precept of comparative animal psychology, stating that an animal's activity should not be interpreted in terms of higher psychological processes if it can be fairly interpreted in terms of simpler developmental processes.