canoniccanonic

Canonic comes from Late Latin canonicus, from Ancient Greek κανονικός ‘of or belonging to a rule, regular’, and ultimately from κανών ‘rod, pole, bar’.

1. Ancient Greekc. 800–300 BCEκανών¹‘rod, pole, bar’
2. Ancient Greekc. 800–300 BCEκανονικός²‘of or belonging to a rule, regular’
3. Late Latinc. 200–600 CEcanonicus³
4. Englishtodaycanonic³

1. ¹ Wiktionary, Ancient Greek κανονικός
2. ² Wiktionary, Latin canonicus
3. ³ Wiktionary, English canonic

Earlier history uncertain. See Wiktionary.