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[roh-tey-ter or, esp. British, roh-tey-] /ˈroʊ teɪ tər or, esp. British, roʊˈteɪ-/
noun, plural rotators for 1, 3, rotatores
[roh-tuh-tawr-eez, -tohr-] /ˌroʊ təˈtɔr iz, -ˈtoʊr-/ (Show IPA),
for 2.
a person or thing that rotates.
Anatomy. a muscle serving to rotate a part of the body.
Nautical. a bladed device streamed to rotate in the water to actuate a patent log.
Origin of rotator
1670-80; < Latin rotātor, equivalent to rotā(re) (see rotate1) + -tor -tor Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for rotator
  • The lower part of the muscle also acts as an adductor and external rotator of the limb.
  • That's one of the rotator cuff muscles, which have ended many a major league pitching career.
  • His arm had gone dead, an archaic diagnosis that today usually means a damaged rotator cuff or other such medical problem.
British Dictionary definitions for rotator


a person, device, or part that rotates or causes rotation
(anatomy) any of various muscles that revolve a part on its axis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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rotator in Medicine

rotator ro·ta·tor (rō'tā'tər)
A muscle that serves to rotate a part of the body.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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