Koiné language

In linguistics, a /Koinesprache/, Koiné or, depending on the context, Ausgleichssprache refers to a language variety that develops from two or more dialects. It is a stabilized contact variety characterized by mixing and subsequent leveling of regional and social dialects. Koine languages are the result of contact between speakers of varieties of a language who understand each other.

Koineization is the development of a koine. It typically occurs in settlements where people have migrated from different parts of a single language area. Unlike the pidgin language and creole language, the speakers understand each other before koineization.

The Koine language is not to be confused with Koine ἡ κοινὴ διάλεκτο, a variety of ancient Greek functioning as a lingua franca