Definition of torsion
1
: the twisting or wrenching of a body by the exertion of forces tending to turn one end or part about a longitudinal axis while the other is held fast or turned in the opposite direction;
also
: the state of being twisted
2
: the twisting of a bodily organ or part on its own axis
3
: the reactive torque that an elastic solid exerts by reason of being under torsion
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