1. A physical state or sense of being able to maintain bodily balance.
2. The ability to maintain a mental state of calmness and composure.
3. A situation in which opposing forces or factors balance each other and stability is attained.
4. In a physical sense: The condition of equal balance between opposing forces; that state of a material system in which the forces acting upon the system, or those that are taken into consideration, are so arranged that their resultant at every point is zero.
5. The state of equal balance between powers of any kind; equality of importance or effect among the various parts of any complex unity.
6. The condition of suspense or uncertainty produced by equality with the forces of opposing influences; neutrality of judgment or volition.
7. Etymology: from Latin æquilibrium, from æquus, "equal" + libra, "a balance, scale".

1. A sensory system located in structures of the inner ear that registers the orientation of the head.
2. A stable situation in which forces cancel one another.
3. A mental state of calmness and composure.
4. A state or situation in which opposing forces or factors balance each other out and stability is attained.
5. In physics, a balanced state in a system; such as, a condition in which the energy gained by a system from its surroundings is exactly in balance with the energy that it loses, irrespective of the passage of time.
6. A state in which a chemical is proceeding equally rapidly in the forward and the reverse directions.

The point defined in prices and quantities, at which the demand for a certain good (article, commodity, material, merchandise, supply, wares) or service equals the available supply of that item at the time.

A top-down model of the economy that includes all of its major components and markets, and the relationships between them: Computable general equilibrium consists of economic models of microeconomic programs in multiple markets of one or more economies, solved computationally for equilibrium values or changes because of specified policies.

1. A condition in which the number of existing molecules dissociating into ions equals the number of new molecules recombining from ions.
2. The condition in which the rate of dissociation of non-ionized molecules is equal to the rate of combination of the ions.

In mechanics, the kind of equilibrium of a body which is so placed that when moved slighty it neither tends to return to its former position nor to depart more widely from it; such as, a perfect sphere or cylinder on a horizontal plane.

1. A state in which all parts of a system are at the same temperature.
2. The condition under which two substances in physical contact with each other exchange no heat energy.