Definition of equilibrium
1a : a state of intellectual or emotional balance : poise trying to recover his equilibrium
b : a state of adjustment between opposing or divergent influences or elements
2 : 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)
3 : balance sense 3a
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