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/suÂ·piÂ·naÂ·tion/ (sooâ³pÄ­-naÂ´shun) [L. supinatio ] the act of assuming the supine position, or the state of being supine. Applied to the hand, the act of turning the palm forward (anteriorly) or upward, performed by lateral rotation of the forearm. Applied to the foot, it generally implies movements resulting in raising of the medial margin of the foot, hence of the longitudinal arch.
An example of supination would be turning the hand so the palm is upward, and pronation is turning of the hand so the palm is facing posteriorly. Pronation derives from prone â¦... lying down on your face. Thus pronation is the act of turning face down (e.g. putting your palm down on a table) Supination is the opposite act.