Definition of retroflex adjective from the Oxford Advanced Learner's Dictionary

     

    retroflex

     adjective
    adjective
    BrE BrE//ˈretrəfleks//
     
    ; NAmE NAmE//ˈretrəfleks//
     
     
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  1. 1 (medical) (of a part of the body) turned backwards
  2. 2 (phonetics) (of a speech sound) produced with the end of the tongue turned up against the hard palate
  3. Word Origin late 18th cent.: from Latin retroflex- ‘bent backwards’, from the verb retroflectere, from retro ‘backwards’ + flectere ‘to bend’.
See the Oxford Advanced American Dictionary entry: retroflex