supination

[soo-puh-ney-shuhn]
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:
1660–70; supinate + -ion

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World English Dictionary
supinate (ˈsuːpɪˌneɪt, ˈsjuː-)
 
vb
to turn (the hand and forearm) so that the palm faces up or forwards
 
[C19: from Latin supīnāre to lay on the back, from supīnussupine]
 
supi'nation
 
n

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Example sentences
No rotation is possible, but the effect of rotation is obtained by the pronation and supination of the radius on the ulna.
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