derived from the Latin word
canonicus (canon; member of cathedral canonry; clergyman; canonical, by canons, legal; mathematician, theorist; one who constructs mathematical; regular; secular; by math divisions of monochord)
derived from the Greek word
kanonikos, κανονικός
derived from the Greek word
kanon, κανών (a rule ('canon'); a standard (of faith and practice); by implication, a boundary; a sphere (of activity))