a stable condition in which forces cancel one another
2.
a state or feeling of mental balance; composure
3.
any unchanging condition or state of a body, system, etc, resulting from the balance or cancellingout of the influences or processes to which it is subjected
thermodynamic equilibrium
4. physics
a state of rest or uniform motion in which there is no resultant force on a body
5. chemistry
the condition existing when a chemical reaction and its reverse reaction take place at equal rates
6. physics
the condition of a system that has its total energy distributed among its component parts in the statistically most probable manner
7. physiology
a state of bodily balance, maintained primarily by special receptors in the inner ear
8.
the economic condition in which there is neither excess demand nor excess supply in a market
Word origin
C17: from Latin aequilībrium, from aequi-equi- + lībra pound, balance