ro·​ta·​tor ˈrō-ˌtā-tər How to pronounce rotator (audio)
 also  rō-ˈtā-
: 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 Perhaps the shape rotators are convinced that computers can outthink us because their own minds are so impoverished. Becca Rothfeld, Washington Post, 26 June 2024 The spinning operation is achieved with standard rotators, enhancing robustness compared to delicate mirror movements required in interferometers. IEEE Spectrum, 3 Feb. 2024 Save water by either changing traditional rotor irrigation heads to MP rotator heads or converting it to drip irrigation. Kobi Bardugo, San Diego Union-Tribune, 9 Mar. 2024 The removable parts are dishwasher-safe, and the rotator is non-stick, which makes cleaning off the sticky dough remnants a cinch. Andrew Watman and Simon Nguyen, Ars Technica, 19 Oct. 2023 See all Example Sentences for rotator 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'rotator.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1659, in the meaning defined above

Time Traveler
The first known use of rotator was in 1659

Dictionary Entries Near rotator

Cite this Entry

“Rotator.” Dictionary, Merriam-Webster, Accessed 20 Jul. 2024.

Medical Definition


ˈrō-ˌtāt-ər also rō-ˈ
plural rotators or rotatores ˌrōt-ə-ˈtōr-ēz How to pronounce rotator (audio)
: 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
Last Updated: - Updated example sentences
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