In thermodynamics, a nonequilibrium state is a state of a system or body that is not in equilibrium. The term "nonequilibrium state", generally, refers to a system in the process or action of an evolution or change. Examples of types of nonequilibrium states include: near-equilibrium and far-from-equilibrium. It is often said that living systems exist continuously in a nonequilibrium state. [1]

See also
● Equilibrium state

References
1. Voet, Donald, Voet Judith G. (2004). Biochemistry: Biomolecules, mechanism of Enzyme Action, and Metabolism, (pg. 575). Wiley & Sons.