Koine(redirected from Koiné Greek)
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(1) Common Greek, which arose in the fourth century B.C. on the basis of the Attic dialect of ancient Greek with elements of the Ionian dialect. In the second half of the first millennium A.D., Koine broke up into a number of dialects which became the basis for the modern dialects of Greek.
(2) The language of communication of a group speaking related languages or dialects. As koine the group can use one of the related dialects or languages, a mixed dialect or language, a standardized literary form based on one or several dialects or languages, or an archaic form common to all the dialects or languages. The formation and concrete form of the koine is determined by the historical, geographic, economic, social, and other conditions of the development of the related dialects or languages.