equilibrium
noun
[ ˌiːkwɪˈlɪbrɪəm ]
• a state in which opposing forces or influences are balanced.
• "the task is the maintenance of social equilibrium"
Similar:
balance,
symmetry,
equipoise,
parity,
equality,
evenness,
stability,
steadiness,
counterpoise,
equipollence,
Origin:
early 17th century (in the sense ‘well-balanced state of mind’): from Latin aequilibrium, from aequi- ‘equal’ + libra ‘balance’.