WordWeight : Weighing the Words

Pronunciation : E`qui*lib"ri*um, n.; pl. E. Equilibriums
Part of Speech : L.
Etymology : [L. aequilibrium, fr. aequilibris in equilibrium, level; aequus equal + libra balance. See Equal, and Librate.]
Definition : 1. Equality of weight or force; an equipoise or a state of rest produced by the mutual counteraction of two or more forces.

2. A level position; a just poise or balance in respect to an object, so that it remains firm; equipoise; as, to preserve the equilibrium of the body. Health consists in the equilibrium between those two powers. Arbuthnot.

3. A balancing of the mind between motives or reasons, with consequent indecision and doubt. Equilibrium valve (Steam Engine), a balanced valve. See under Valve.

Equilibria.
Source : Webster's Unabridged Dictionary, 1913