Definition of supination in US English:

supination

noun

Anatomy
  • See supinate

    • ‘Strength testing of the biceps and triceps muscles, pronation, supination, and wrist flexion and extension should be performed.’
    • ‘Common abnormalities, which include lack of full supination and full pronation, may indicate an old injury of the forearm, wrist or elbow.’
    • ‘With biceps tendinosis, the physical examination reveals tenderness of the distal biceps tendon that increases with resisted flexion and supination.’
    • ‘On examination, the arm is held limply with the elbow extended and wrist pronated, and the child resists attempted supination of the arm.’
    • ‘Called supination, this motion results in higher levels of biceps muscle activation than the typical palms-up dumbbell curls.’

Pronunciation

supination

/ˌsupəˈneɪʃ(ə)n//ˌso͞opəˈnāSH(ə)n/