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extensor

American  
[ik-sten-ser, -sawr] / ɪkˈstɛn sər, -sɔr /

noun

Anatomy.
  1. a muscle that serves to extend or straighten a part of the body.


extensor British  
/ ɪkˈstɛnsə, -sɔː /

noun

  1. any muscle that stretches or extends an arm, leg, or other bodily part Compare flexor

"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

extensor Scientific  
/ ĭk-stĕnsər /
  1. A muscle that extends or straightens a limb or joint.

  2. Compare flexor


Etymology

Origin of extensor

1700–10; < New Latin, equivalent to Latin extend ( ere ) to extend + -tor -tor, with -dt- > -s-

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Vocabulary lists containing extensor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

If the wrist extensor muscles are contracted, the fingers re-open and the hand releases the pen.

From Science Daily Dec. 5, 2023

Clarke Schmidt had been in the mix but has been shut down for three to four weeks due to a strained common extensor tendon near his elbow in his right arm.

From Washington Times Feb. 22, 2021

Crick underwent a procedure Tuesday to repair the extensor tendon, performed by Dr. Scott Hanson in San Francisco.

From Seattle Times Sep. 10, 2019

The Angels later announced that Shoemaker experienced tightness in the extensor muscle of his right forearm.

From Los Angeles Times Jun. 14, 2017

Lastly, it has been considered as being the homologue of the proper extensor of the great-toe; but why, then, in the ox, which has no great-toe, is it so highly developed?

From Artistic Anatomy of Animals by ?douard Cuyer

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