Torsion :: Torsion (n.) The act of turning or twisting, or the state of being twisted; the twisting or wrenching of a body by the exertion of a lateral force tending to turn one end or part of it about a longitudinal axis, while the other is held fast or turned in the opposite direction..
Torsion :: Torsion (n.) That force with which a thread, wire, or rod of any material, returns, or tends to return, to a state of rest after it has been twisted; torsibility..
Torsional :: Torsional (a.) Of or pertaining to torsion; resulting from torsion, or the force with which a thread or wire returns to a state of rest after having been twisted round its axis; as, torsional force..