Pronunciation: (ē"kwu-lib'rē-um, ek"wu-), [key]
—pl. -ri•ums, -ri•aPronunciation: (-rē-u). [key]
1. a state of rest or balance due to the equal action of opposing forces.
2. equal balance between any powers, influences, etc.; equality of effect.
3. mental or emotional balance; equanimity: The pressures of the situation caused her to lose her equilibrium.
4. Chem.the condition existing when a chemical reaction and its reverse reaction proceed at equal rates.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.