lingua franca

• Langue ou système de communication utilisé entre des groupes de personnes n'ayant pas de langue maternelle commune, souvent une troisième langue adoptée pour se comprendre.

A language or system of communication that is used between groups of people who do not share a native language, often a third language adopted for mutual understanding.

1. B2formal

   A language that is adopted as a common language between speakers whose native languages are different.

   langue véhiculaire

   • English serves as a lingua franca in international business.
   • Swahili is used as a lingua franca in East Africa.
   • Latin was once the lingua franca of European scholars.