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English definition of “supinator”

supinator

noun [C]     /suː.pɪˈneɪ.tər/ US  /ˈsuː.pəˌneɪ.t̬ər/ specialized
a muscle in the front of the arm that is involved in turning the palms (= inside part) of the hands upwardSubstances and structures in the body
(Definition of supinator noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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