e·mer·gen·cy 
(ĭ-mûrjən-sē)
(ĭ-mûrjən-sē)n. pl. e·mer·gen·cies
1. A serious situation or occurrence that happens unexpectedly and demands immediate action.
2. A condition of urgent need for action or assistance: a state of emergency.
adj.
For use during emergencies: emergency food rations.