koinePronunciation: /ˈkɔɪniː/Definition of koine noun [mass noun] the common language of the Greeks from the close of the classical period to the Byzantine era. [count noun] a common language shared by various peoples; a lingua franca. Origin: late 19th century: from Greek koinē (dialektos) 'common (language)'koine in other Oxford dictionaries Definition of koine in the US English dictionary
