• synonyms


[flek-shuh n]
  1. Anatomy.
    1. the act of bending a limb.
    2. the position that a limb assumes when it is bent.
  2. Chiefly British. flection(defs 1–3).
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Origin of flexion

1595–1605; < Latin flexiōn- (stem of flexiō) a bending, turning. See flex1, -ion
Related formsflex·ion·al, adjectiveflex·ion·less, adjectivehy·per·flex·ion, nouno·ver·flex·ion, nounsu·per·flex·ion, noun


[flek-shuh n]
  1. the act of bending.
  2. the state of being bent.
  3. a bend; bent part.
  4. Anatomy. flexion.
  5. Grammar. inflection(def 2).
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Also especially British, flex·ion (for defs 1–3).

Origin of flection

< Latin flexiōn- (stem of flexiō) a bending, turning, change. See flex1, -ion
Related formsflec·tion·al, adjectiveflec·tion·less, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for flexion

Historical Examples

  • The garment is tubular and unprovided with hinges at the points of flexion.

    The Devil's Dictionary

    Ambrose Bierce

  • The attitude of the hand and fingers is usually one of flexion.

  • Flexion, inversion, and adduction of the thighs also occurred.

  • At which point the first flexion occurred will never be determined.


    Hilaire Belloc

  • In flexion, the hand is bent backwards; in extension it is carried forwards.

British Dictionary definitions for flexion


  1. the act of bending a joint or limb
  2. the condition of the joint or limb so bent
  3. a variant spelling of flection
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Derived Formsflexional, adjectiveflexionless, adjective


  1. the act of bending or the state of being bent
  2. something bent; bend
  3. grammar a less common word for inflection
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See also flexion
Derived Formsflectional, adjectiveflectionless, adjective

Word Origin

C17: from Latin flexiō a bending, from flectere to curve, bow
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 flexion


c.1600, from Latin flexionem (nominative flexio) "a bending, swaying; bend, turn, curve," noun of action from past participle stem of flectere "to bend" (see flexible).

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Online Etymology Dictionary, © 2010 Douglas Harper

flexion in Medicine


  1. The act of bending a joint or limb in the body by the action of flexors.
  2. The condition of being flexed or bent.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.