study. This is also related to the concept of homeostasis, however, in biochemistry, a steady state can be stable or unstable such as in the case of sustained oscillations or bistable behavior. Physiology Homeostasis (from Greek ὅμοιος, hómoios, "similar" and στάσις, stásis, "standing still") is the property of a system that regulates its internal environment and tends to maintain a stable, constant condition. Typically used to refer to a living organism, the concept came from that of milieu interieur that was created by Claude Bernard and published in 1865. Multiple dynamic equilibrium adjustment and regulation mechanisms make homeostasis possible. Fiber optics In fiber optics, "steady state" is a synonym for equilibrium mode distribution. Pharmacokinetics In Pharmacokinetics, steady state is a dynamic equilibrium in the body where drug concentrations consistently stay within a therapeutic limit over time. See also Attractor Carrying capacity Control theory Dynamical system Ecological footprint Economic growth Engine test stand Equilibrium point List of types of equilibrium Evolutionary economics Growth curve Herman Daly Homeostasis Limit cycle Limits to Growth Population dynamics Simulation State function Steady state economy Steady State theory Systems theory Thermodynamic equilibrium Transient state References Systems theory Control theory