HyperDic: passive_air_defense

English > 1 sense of the expression passive air defense:
NOUNactpassive air defenseair defense by the use of deception or dispersion or protective construction
English > passive air defense: 1 sense > noun 1, act
Meaningair defense by the use of deception or dispersion or protective construction.
Broaderair defensedefensive measures designed to destroy attacking enemy / enemy aircraft or missiles or to nullify their effectiveness

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