su·​pi·​na·​tor ˈsü-pə-ˌnā-tər How to pronounce supinator (audio)
: a muscle that produces the motion of supination

Examples of supinator in a Sentence

Recent Examples on the Web For example, people who have outer knee pain or frequent ankle sprains tend to be supinators, Dr. Cunha says, since their feet roll outward. April Benshosan, Health, 5 May 2023 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 examples are programmatically compiled from various online sources to illustrate current usage of the word 'supinator.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin, from Latin supinare

First Known Use

1615, in the meaning defined above

Time Traveler
The first known use of supinator was in 1615

Dictionary Entries Near supinator

Cite this Entry

“Supinator.” Dictionary, Merriam-Webster, Accessed 20 May. 2024.

Medical Definition


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