ETYM French, from Late Lat. torsio, from Latin torquere, tortum, to twist. Related to Torture.
A twisting force; SYN. torque.
Act of twisting; state of being twisted.
In physics, the state of strain set up in a twisted material; for example, when a thread, wire, or rod is twisted, the torsion set up in the material tends to return the material to its original state. The torsion balance, a sensitive device for measuring small gravitational or magnetic forces, or electric charges, balances these against the restoring force set up by them in a torsion suspension.