noun Anatomy.

a muscle that serves to flex or bend a part of the body.

Origin of flexor

From New Latin, dating back to 1605–15; see origin at flex1, -tor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of flexor

British Dictionary definitions for flexor



any muscle whose contraction serves to bend a joint or limbCompare extensor

Word Origin for flexor

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

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

Medicine definitions for flexor




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.

Science definitions for flexor



A muscle that bends or flexes a joint. Compare extensor.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.