Vis

Chamber's Twientieth Century Dictionary · 1908 · p. 120

vis, n. force: power:— pl. Vī′res .— Vis inert iæ , inertia: sluggishne ; Vis mortua , force of pre ure, dead force; Vis viva , living force, equal to the ma of a moving body multiplied by the square of its velocity. [L.]