Толковый словарь английского языка - equilibrium

noun (plural -riums or equilibria) Etymology: Latin a~, from aequilibris being in ~, from aequi+ libra weight, balance Date: 1608 1. a state of intellectual or emotional balance ; poise , a state of adjustment between opposing or divergent influences or elements, a state of balance between opposing forces or actions that is either static (as in a body acted on by forces whose resultant is zero) or dynamic (as in a reversible chemical reaction when the rates of reaction in both directions are equal), balance 6a