torsion

[ tawr-shuh n ]
/ ˈtɔr ʃən /

noun

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

Origin of torsion

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

Related forms

tor·sion·al, adjectivetor·sion·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for torsional

British Dictionary definitions for torsional

torsion

/ (ˈtɔːʃən) /

noun

  1. the twisting of a part by application of equal and opposite torques at either end
  2. the condition of twist and shear stress produced by a torque on a part or component
the act of twisting or the state of being twisted

Derived Forms

torsional, adjectivetorsionally, adverb

Word Origin for torsion

C15: from Old French, from medical Latin torsiō griping pains, from Latin torquēre to twist, torture
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

Medicine definitions for torsional

torsion

[ tôrshən ]

n.

A twisting or rotation of a part on its long axis.
Twisting of the cut end of an artery to arrest hemorrhage.
Ocular rotation around the anteroposterior axis.

Related forms

torsion•al adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for torsional

torsion

[ tôrshən ]

The stress on an object when torque is applied to it.
A mathematical operation in geometry measuring how tightly a plane is twisted.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.