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supination

[soo-puh-ney-shuh n] /ˌsu pəˈneɪ ʃən/
noun
1.
rotation of the hand or forearm so that the palmar surface is facing upward (opposed to pronation).
2.
a comparable motion of the foot, consisting of adduction followed by inversion.
3.
the position assumed as the result of this rotation.
Origin
1660-1670
1660-70; supinate + -ion
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for supination
  • No rotation is possible, but the effect of rotation is obtained by the pronation and supination of the radius on the ulna.
Word Origin and History for supination
n.

1660s, from Latin supinationem (nominative supinatio), noun of action from supinare (see supine).

Online Etymology Dictionary, © 2010 Douglas Harper
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