lingua franca

international language

A lingua franca (Italian literally meaning Frankish language, see etymology below) is any language widely used beyond the population of its native speakers. The de facto status of lingua franca is usually "awarded" by the masses to the language of the most influential nation(s) of the time. Any given language normally becomes a lingua franca primarily by being used for international commerce, but can be accepted in other cultural exchanges, especially diplomacy.
See more at Wikipedia.org...

Lingua Franca or lingua franca can mean:A lingua franca is a language used for communication between speakers of different langauagesMediterranean Lingua Franca, such a language used around the Mediterranean from the 11th to 19th centuryLingua Franca (magazine), a periodical
See more at Wikipedia.org...

Noun
1. a common language used by speakers of different languages; "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"
(synonym) interlanguage, koine
(hypernym) language, linguistic communication

lingua franca, international language

n. lingua franca