/sooh"peuh nayt'/ , v. , supinated, supinating .
v.t.
1. to turn to a supine position; rotate (the hand or foot) so that the palm or sole is upward.
v.i.
2. to become supinated.
[ 1825-35; supinatus (ptp. of supinare to lay face up). See SUPINE, -ATE 1 ]