Definition of "deterrence"

The act of deterring, or the state of being deterred.  examples

Action taken by states or alliances of nations against equally powerful alliances to prevent hostile action.  examples

The art of producing in one's enemy the fear of attacking.

1. (specifically) nuclear deterrence: discouraging nuclear attack through the threat of nuclear retaliation.  examples

The action of discouraging an action or event by instilling doubt or fear of the penalty or punishment.  examples