diglossia
Pronunciation:
/ˌdaɪˈɡlɒsi.ə//ˌdaɪˈɡlɑsi.ə/noun
Definitions
The coexistence in a given population of two closely related native languages or dialects, one of which is regarded as more prestigious than the other; the similar coexistence of two unrelated languages.
The presence of a cleft or doubled tongue.
Synonyms:bifid tonguecleft tongue