Equilibrium /(?)/

E·qui·lib·ri·um

Equilibrium

n.

pl. Equilibriums, Equilibria

  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.
  3. A balancing of the mind between motives or reasons, with consequent indecision and doubt.

Phrases & Compounds
Equilibrium valve
a balanced valve. See under Valve.