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torsion

UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈtɔː^rʃ^ən/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈtɔrʃən/ ,USA pronunciation: respelling(tôr′shən)

tor•sion /ˈtɔrʃən/USA pronunciation n. [uncountable]

the act of twisting or the state of being twisted.

tor•sion•al, adj. See -tort-.

tor•sion (tôr′shən),USA pronunciation n.

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

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

tor ′sion•al, adj.
tor ′sion•al•ly, adv.

Collins Concise English Dictionary © HarperCollins Publishers::

torsion /ˈtɔːʃən/ n

- the twisting of a part by application of equal and opposite torques at either end
- 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

Etymology: 15th Century: from Old French, from medical Latin torsiō griping pains, from Latin torquēre to twist, tortureˈtorsional adj ˈtorsionally adv

'torsion' also found in these entries (note: many are not synonyms or translations):

shear - torsion balance - torsion bar - work-harden - Cavendish experiment - Eötvös torsion balance - four-hundred-day clock - Frenet formula - intorsion - ion - modulus of torsion - patent log - torque - torsibility - torsion-free group - torsion group - torsion modulus - torsion pendulum - tortious - twist - volvulus - shaft horsepower - shear modulus

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torsion