hagio-EnglishOxford New American Dictionaryhagio- /ˈhaɡēō, , ˈhæɡioʊ, ˈhāɡēō, , ˈheɪɡioʊ, ˈhäɡēō, ˈhɑɡioʊ/ ▸ combining form relating to saints or holiness: hagiographer. – ORIGIN from Greek hagios ‘holy’.