Nature's equilibrium is very fragile.

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

Body equilibrium is one of the cerebellum's functions.

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.

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

Sami couldn't find his equilibrium.

According to the IAU, a "dwarf planet" is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.

Law of Chemical Equilibrium is an expression of the relationship between the concentration of reactants and products of a chemical reaction mixture at equilibrium.