What is the time evolution of a system that is not quite in equilibrium?

Body equilibrium is one of the cerebellum's functions.

How can we define equilibrium for a system of moving particles?

The market never reaches stable equilibrium.

To even mention all the things the bird must constantly keep in mind in order to fly securely through the air would take a considerable part of the evening... The bird has learned this art of equilibrium, and learned it so thoroughly that its skill is not apparent to our sight. We only learn to appreciate it when we try to imitate it.

I point the fan at my upper torso and I wrap an electric blanket around my lower half. My body temperature finds an equilibrium between hot and cold.

Currents, waves, and wind normally transport sediment throughout the littoral system. Armoring of the coast can interfere with littoral transport, which in a natural state may reach a dynamic equilibrium.

We could apply the theory of punctuated equilibrium to languages.

Nature's equilibrium is very fragile.

Sami couldn't find his equilibrium.