WordReference Random House Unabridged Dictionary of American English © 2025
su•pi•na•tion
(so̅o̅′pə nā′shən),USA pronunciation n.
- 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.
- supinate + -ion 1660–70
'supination' also found in these entries (note: many are not synonyms or translations):