The condition of a system in which competing influences are balanced, resulting in no net change. / Mental balance.

plural of equilibrium

(physics) the state of a system in which its energy distribution is such that all parts of the system have the same temperature and no heat flows

A theory of evolution, holding that evolutionary change tends to be characterized by long periods of stability, or equilibrium, punctuated by episodes of very fast development.

(economics) The price of a commodity at which the quantity that buyers wish to buy equals the quantity that sellers wish to sell.

(physics) Any system in which the sum of the forces, and torque, on each particle of the system is zero; mechanical equilibrium. / (economics) A market in which demand and supply are the same.

Any equilibrium in which opposite changes occur simultaneously. / (chemistry) An equilibrium in which two reversible reactions occur at the same rate.

(game theory) The set of choices of players' strategies for which no player can benefit by changing his or her strategy assuming that the other players keep theirs unchanged.

(chemistry) an equilibrium of which not all participating substances are in the same phase

(chemistry) An equilibrium all participating substances of which are in the same phase.