Definition of "pronator" []

• A muscle that effects or assists in pronation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "He has a torn medial collateral ligament in his left elbow and a torn flexor pronator, which is a muscle in the forearm."
• "The Mariners say they'll treat Hernandez's flexor-pronator strain with rest and rehab."
• "Example: a pronator that resists undesirable action by a prime mover."