Steady state may refer to: Steady state (systems) an operating condition in thermodynamic and other systems or processes when variables stay constant as time passes. Steady-state economy, an economy made up of a constant population size and a constant stock of physical wealth (capital). Steady-state equilibrium (monetary theory), an economic situation where neutrality of money coincides with zero population growth. Steady-state rate of growth (neoclassical growth theory), an economy featuring an equi-proportionate increase in capital and labour Steady state (electronics), a state existing in a circuit or network when all transients have died away. Steady state (chemistry), a term in chemical kinetics meaning the situation in which all state variables of an open system are constant in time. Steady state (biochemistry), a situation in which certain parameters of cells or organs, usually concentrations of molecules, are constant in time Steady state (physiology), also known as homeostasis, a system in which a particular variable is not changing but energy must be continuously added to maintain this variable constant. Dynamic equilibrium commonly observed in dynamical systems. The Steady State advocacy group active in U.S. politics made up of former senior national security officials.
It may also refer to:
Steady-state model, a non-standard cosmological view developed in 1949 by Fred Hoyle and others as an alternative to the Big Bang theory. Steady state engine test stand, a type of application for engine testing. Microsoft Windows SteadyState, an imaging program for Microsoft operating systems.