Look up torsion in Wiktionary, the free dictionary.

The term torsion may refer the following:

• In geometry:
  • Torsion of a curve
  • Torsion tensor in differential geometry
  • The closely related concepts of Reidemeister torsion (also called R-torsion, Franz torsion, de Rham torsion) and analytic torsion (also called Ray-Singer torsion)
  • Whitehead torsion

• In algebra:
  • Torsion (algebra)
  • Tor functor

• In medicine:
  • Testicular torsion
  • Bloat

• In physics and engineering:
  • Torsion (mechanics)
  • Torsion coefficient
  • Torsion pendulum
  • Torsion spring or -bar
  • Torsion field

• In biology:
  • Torsion (gastropod), a developmental feature of all gastropods

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