ro·​ta·​tor | \ ˈrō-ˌtā-tər How to pronounce rotator (audio) also rō-ˈtā- \

Definition of rotator

: one that rotates or causes rotation especially plural rotators or rotatores\ ˌrō-​tə-​ˈtȯr-​ˌēz How to pronounce rotator (audio) \ : a muscle that partially rotates a part on its axis

Examples of rotator in a Sentence

Recent Examples on the Web Abarca says even your rotator cuffs, lats, traps, and pectoral muscles can be involved in core work. SELF, 22 Sep. 2021 Rays right-hander Pete Fairbanks (right rotator strain) and Blue Jays right-hander Tyler Chatwood (triceps inflammation) were placed on the 10-day IL. San Francisco Chronicle, 9 Apr. 2021 Most torn rotator cuffs can be repaired through conservative techniques such as icing, anti-inflammatories, rest and physical therapy, but that didn’t happen in my case. Joe Queenan, WSJ, 18 Feb. 2021 But the fast-rotator explanation has a strike against it as well, Jewitt notes. John Matson, Scientific American, 1 Nov. 2013 The Giants are hoping Jeff Samardzija (rotator-cuff inflammation) can begin a throwing program Wednesday. Henry Schulman,, 17 Aug. 2020 This Grillart tool has five brushes in one and a 360-degree rotator. Matt Haines, CNN Underscored, 30 July 2020 After an estimated 20 minute charging time, the Fairy Doll can remain in the air for 6-8 minutes, powered by her flexible skirt/rotator blades. Popular Science, 15 Jan. 2020 Gluons, the eight particles that convey the strong force, can be thought of as the rotators of the triangles. Quanta Magazine, 15 Dec. 2016

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

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First Known Use of rotator

1659, in the meaning defined above

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Time Traveler for rotator

Time Traveler

The first known use of rotator was in 1659

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Dictionary Entries Near rotator



rotator cuff

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Cite this Entry

“Rotator.” Dictionary, Merriam-Webster, Accessed 18 Jan. 2022.

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More Definitions for rotator


ro·​ta·​tor | \ ˈrō-ˌtāt-ər also rō-ˈ \
plural rotators or rotatores\ ˌrōt-​ə-​ˈtōr-​ēz How to pronounce rotator (audio) \

Medical Definition of rotator

: a muscle that partially rotates a part on its axis specifically : any of several small muscles in the dorsal region of the spine arising from the upper and back part of a transverse process and inserted into the lamina of the vertebra above


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