noun, masculine/ˈkanon/plural: cánones
canon (principle, literary works, prayer, religious law, music piece); tax, fee; canon (in fiction)
Synonyms: norma, precepto, regla
Borrowed from Latin canōn, from Ancient Greek κανών (kanṓn, “measuring rod, standard”) (compare κάννα (kánna, “reed”)), perhaps of Semitic origin. The fiction sense is borrowed from English canon.