Definition of ethnolinguistics in English:

ethnolinguistics

plural noun

treated as singular
  • The branch of linguistics concerned with the relations between linguistic and cultural behaviour.

    ‘The results of this project will contribute essentially to the study of ethnolinguistics and to the description of some endangered languages and dialects.’
    ‘His interests include ethnolinguistics and language acquisition in bilingual children.’

Pronunciation

ethnolinguistics

/ˌɛθnəʊlɪŋˈɡwɪstɪks/