supination

[ soo-puh-ney-shuh n ]
/ ˌsu pəˈneɪ ʃən /

noun

rotation of the hand or forearm so that the palmar surface is facing upward (opposed to pronation).
a comparable motion of the foot, consisting of adduction followed by inversion.
the position assumed as the result of this rotation.

Origin of supination

First recorded in 1660–70; supinate + -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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