E'qui-līb'ri-ŭm, n.

n.; Lat. pl. E-QUI-LĪB'RI-Ā; Eng. pl. E-QUI-LIB'RI-UMS. [Lat. æquilibrium, from æquilibris; It. & Sp. equilibrio, Fr. équilibre. See supra.]

1. Equality of weight or force; a state of rest produced by the mutual counteraction of two or more forces.
2. A just poise or balance in respect to an object, so that it remains firm; as, to preserve the equilibrium of the body.

Health consists in the equilibrium between those two powers. Arbuthnot. 3. Equal balancing of the mind between motives or reasons, with consequent indecision and doubt. In equilibrio [Lat.], in a state of equilibrium.