Equilibrium

Part of speech: noun (n.)

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.