equilibrium in WordNet English dictionary

1. equality of distribution
   balance  equilibrium  equipoise  counterbalance 
   
2. a chemical reaction and its reverse proceed at equal rates
   chemical equilibrium  equilibrium 
   
3. a sensory system located in structures of the inner ear that registers the orientation of the head
   equilibrium  labyrinthine sense  vestibular sense  sense of balance  sense of equilibrium 
   
4. a stable situation in which forces cancel one another
   equilibrium