- to turn into a prone position; to rotate (the hand or forearm) so that the surface of the palm is downward or toward the back; to turn (the sole of the foot) outward so that the inner edge of the foot bears the weight when standing.
- (in vertebrates) to rotate (any limb or joint) in a similar manner.
- to become pronated.
- to turn (a limb, hand, or foot) so that the palm or sole is directed downwards
