Supination and pronation?

Answer:
Pronation derives from prone ... 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.
First answer by Johnellishartford. Last edit by Johnellishartford. Contributor trust: 702 [recommend contributor recommended]. Question popularity: 0 [recommend question].