passive air defense

1. 1.

   air defense by the use of deception or dispersion or protective construction

   Broaderair defense

Questions about passive air defense

What does passive air defense mean?

passive air defense means "air defense by the use of deception or dispersion or protective construction".

Is passive air defense a common word?

passive air defense is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.