New American Oxford Dictionary
supinate
su pi nate |ˈso͞opəˌnāt ˈsupəneɪt | ▶verb [ with obj. ] Anatomy turn or hold (a hand, foot, or limb ) so that the palm or sole is facing upward or outward: (as adj. supinated ) : a supinated foot. Compare with pronate. • [ no obj. ] walk or run with most of the weight on the outside of the feet. DERIVATIVES su pi na tion |ˌso͞opəˈnāSHən |noun ORIGIN mid 19th cent.: back-formation from supination, from Latin supinatio (n- ), from supinare ‘lay backward, ’ from supinus (see supine ).
Oxford Dictionary
supinate
supinate |ˈs (j )uːpɪneɪt | ▶verb [ with obj. ] Anatomy turn or hold (a hand, foot, or limb ) so that the palm or sole is facing upwards or outwards: (as adj. supinated ) : a supinated foot. Compare with pronate. • [ no obj. ] walk or run with most of the weight on the outside of the feet. DERIVATIVES supination |-ˈneɪʃ (ə )n |noun ORIGIN mid 19th cent. (earlier (mid 17th cent. ) as supination ): back-formation from supination, from Latin supinatio (n- ), from supinare ‘lay backwards ’, from supinus (see supine ).