lingua_franca has definitions from the field of linguistics
1
[ noun ] (linguistics) a common language used by speakers of different languages

Examples

"Koine is a dialect of ancient Greek that was the lingua franca of the empire of Alexander the Great and was widely spoken throughout the eastern Mediterranean area in Roman times"

Related terms

language natural_language

2
[ noun ] (linguistics) a common language used by speakers of different languages

Synonyms

koine

Related terms

interlanguage

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