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[flek-ser] /ˈflɛk sər/
noun, Anatomy
a muscle that serves to flex or bend a part of the body.
Origin of flexor
1605-15; < New Latin; see flex1, -tor Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for flexor


any muscle whose contraction serves to bend a joint or limb Compare extensor
Word Origin
C17: New Latin; see flex
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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Word Origin and History for flexor

1610s, Modern Latin, short for musculus flexor "a bending muscle," agent noun from past participle stem of Latin flectere "to bend" (see flexible).

Online Etymology Dictionary, © 2010 Douglas Harper
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flexor in Medicine

flexor flex·or (flěk'sər)
A muscle that when contracted acts to bend a joint or limb in 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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flexor in Science
A muscle that bends or flexes a joint. Compare extensor.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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