See Also:

vis(1) (iou)



vis noun1. . E17.
[Latin.]
1. Strength, force, energy, vigour. Chiefly in various phrs. E17.
vis a fronte Mechanics the operative force of a moving or acting body, equal to the mass of the body multiplied by the square of its velocity.
Law. In pl. Legal validity; legal authority or power. (Earlier in INTRA VIRES, ULTRA VIRES.) L20.