UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈtɔːrʃən/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈtɔrʃən/ ,USA pronunciation: respelling(tôrshən)

WordReference Random House Learner's Dictionary of American English © 2020
tor•sion /ˈtɔrʃən/USA pronunciation   n. [uncountable]
  1. the act of twisting or the state of being twisted.
tor•sion•al, adj. See -tort-.

WordReference Random House Unabridged Dictionary of American English © 2020
tor•sion  (tôrshən),USA pronunciation n. 
  1. the act of twisting.
  2. the state of being twisted.
  3. [Mech.]
    • the twisting of a body by two equal and opposite torques.
    • the internal torque so produced.
  4. [Math.]
    • the degree of departure of a curve from a plane.
    • a number measuring this.
tor sion•al, adj. 
tor sion•al•ly, adv. 
  • Late Latin torsiōn- (stem of torsiō) torment, equivalent. to tors(us) twisted (see torse) + -iōn- -ion
  • Old French torsion
  • 1375–1425; 1535–45 for def. 1.; late Middle English torcion wringing one's bowels

Collins Concise English Dictionary © HarperCollins Publishers::
torsion /ˈtɔːʃən/ n
  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
  3. the act of twisting or the state of being twisted
Etymology: 15th Century: from Old French, from medical Latin torsiō griping pains, from Latin torquēre to twist, torture

ˈtorsional adj ˈtorsionally adv
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