Definition of back-translation in English:
back-translation
noun
The process of reconverting a translated text back into its original language; a translation so produced.
Pronunciation
back-translation
/ˈbaktrɑːnzˌleɪʃn/ /ˈbaktranzˌleɪʃn/ /ˈbaktrɑːnsˌleɪʃn/