Torsion may refer to:
Science Torsion (mechanics), the twisting of an object due to an applied torque Torsion of spacetime, the field used in Einstein–Cartan theory and Alternatives to general relativity Torsion angle, in chemistry
Biology and medicine Torsion fracture or spiral fracture, a bone fracture when torque is applied Organ torsion, twisting that interrupts the blood supply to that organ: Splenic torsion, causing splenic infarction Ovarian torsion Testicular torsion Penile torsion, a congenital condition Torsion of the digestive tract in some domestic animals: Torsion, a type of horse colic Gastric torsion, or gastric dilatation volvulus Torsion (gastropod), a developmental feature of all gastropods
Mathematics Torsion of a curve Torsion tensor, in differential geometry Torsion (algebra), in ring theory Torsion group, in group theory and arithmetic geometry Tor functor, the derived functors of the tensor product of modules over a ring Torsion-free module, in algebra See also Torsion-free (disambiguation) Analytic torsion (Reidemeister torsion, R-torsion, Franz torsion, de Rham torsion, Ray-Singer torsion), a topological invariant of manifolds Whitehead torsion, in geometric topology
Other uses Torsion field (pseudoscience), a field alleged to make faster-than-light communication and paranormal phenomena possible