the act of twisting.
the state of being twisted.
the twisting of a body by two equal and opposite torques.
the internal torque so produced.
the degree of departure of a curve from a plane.
a number measuring this.

1375–1425; 1535–45 for def 1; late Middle English torcion wringing one's bowels < Old French torsion < Late Latin torsiōn- (stem of torsiō) torment, equivalent to tors(us) twisted (see torse) + -iōn- -ion

torsional, adjective
torsionally, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To torsion
World English Dictionary
torsion (ˈtɔːʃən)
1.  a.  the twisting of a part by application of equal and opposite torques at either end
 b.  the condition of twist and shear stress produced by a torque on a part or component
2.  the act of twisting or the state of being twisted
[C15: from Old French, from medical Latin torsiō griping pains, from Latin torquēre to twist, torture]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

c.1425, "wringing pain in the bowels," from O.Fr. torsion (1314), from L.L. torsionem (nom. torsio) "a wringing or gripping," from L. tortionem (nom. tortio) "torture, torment," from tortus, pp. of torquere "to twist" (see thwart). Meaning "action or process of twisting as
by opposing forces" is first recorded 1543.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

torsion tor·sion (tôr'shən)

  1. A twisting or rotation of a part on its long axis.

  2. Twisting of the cut end of an artery to arrest hemorrhage.

  3. Ocular rotation around the anteroposterior axis.

tor'sion·al adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
torsion   (tôr'shən)  Pronunciation Key 
  1. The stress on an object when torque is applied to it.

  2. A mathematical operation in geometry measuring how tightly a plane is twisted.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
The second are torsion pendulums, which work by hanging a bar that has weights at each end from a wire.
Tennis rackets have been strengthened by adding tiny particles that improve torsion and flex resistance.
Everything else uses a less sophisticated semi-independent torsion beam.
And it does due to an aluminum core and ridiculously stiff torsion.
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature