In terms of, or by means of, torsion.

Of, pertaining to, or achieved using torsion

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.

plural of torsion

Under torsion

subjected to torsion / twisted

(physics) Of or pertaining to torsion

(chemistry) In a chain of atoms A-B-C-D, the dihedral angle between the plane containing the atoms A,B,C and that containing B,C,D

A scientific instrument for measuring very weak forces, having a delicate horizontal bar or needle suspended by fine thread or wire.

plural of torsion balance