Definition of auxiliary language noun from the Oxford Advanced Learner's Dictionary


auxiliary language

BrE BrE//ɔːɡˈzɪliəri læŋɡwɪdʒ//
; NAmE NAmE//ɔːɡˈzɪliəri læŋɡwɪdʒ//
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a language used by speakers of different languages to communicate Esperanto was invented as an auxiliary language.
See the Oxford Advanced American Dictionary entry: auxiliary language