<unk>  is an anatomical term to describe a rotation movement. Such movement can occur in the forearm (at the radioulnar joint) and the foot (at the subtalar and talocalcaneonavicular joints).
For the forearm, when standing in the anatomical position<unk>  will move the palm of the hand from an anterior-facing position to a posterior-facing position without an associated movement at the shoulder (gleno-humeral joint). For the foot<unk>  will cause the sole of the foot to face more laterally than when standing in the anatomical position.<unk>  is the opposite of supination.
Pronation
Menstruation
Passivation
Burping
Bedwetting
Triazotion
Erection
Ejaculation