Equilibrium is the condition of a system in which competing influences are balanced and it may refer to: Biology Equilibrioception, the sense of balance present in humans and animals Homeostasis, the ability of an open system, especially living organisms, to regulate its internal environment Genetic equilibrium, theoretical state in which a population isn't evolving Punctuated equilibrium, theory in evolutionary biology Sedimentation equilibrium, analytical ultracentrifugation method for m… (More on Equilibrium)