pronation

Definitions of pronation
1

n rotation of the hands and forearms so that the palms face downward

Antonyms:
supination
rotation of the hands and forearms so that the palms face upward
Type of:
rotary motion, rotation
the act of rotating as if on an axis

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.