su·​pi·​na·​tor | \ ˈsü-pə-ˌnā-tər How to pronounce supinator (audio) \

Definition of supinator

: a muscle that produces the motion of supination

Examples of supinator in a Sentence

Recent Examples on the Web There are three types of runners based on foot strike: overpronators (your feet roll inward too much), neutral pronators (feet roll inward slightly) and supinators (feet don’t roll inward enough, so most of the impact is on the outside of the foot). Danika Worthington, The Denver Post, 25 Mar. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'supinator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of supinator

1615, in the meaning defined above

History and Etymology for supinator

New Latin, from Latin supinare

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Time Traveler for supinator

Time Traveler

The first known use of supinator was in 1615

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Cite this Entry

“Supinator.” Dictionary, Merriam-Webster, Accessed 27 Jun. 2022.

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More Definitions for supinator


su·​pi·​na·​tor | \ ˈsü-pə-ˌnāt-ər How to pronounce supinator (audio) \

Medical Definition of supinator

: a muscle that produces the motion of supination specifically : a deeply situated muscle of the forearm that arises in two layers from the lateral epicondyle of the humerus and adjacent parts of the ligaments and bones of the elbow and that passes over the head of the radius to insert into its neck and the lateral surface of its shaft


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