civil defense

noun

Definition of civil defense

: the system of protective measures and emergency relief activities conducted by civilians in case of hostile attack, sabotage, or natural disaster

Examples of civil defense in a Sentence

She's in training to be part of the local civil defense. the head of civil defense

First Known Use of civil defense

1939, in the meaning defined above

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The first known use of civil defense was in 1939

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More Definitions for civil defense

civil defense

noun

English Language Learners Definition of civil defense

: a group of people who are not part of the military but are trained to protect and help people if an enemy attacks their country or if there is a natural disaster (such as a flood or earthquake)

More from Merriam-Webster on civil defense

Britannica.com: Encyclopedia article about civil defense

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a usually brief trip or an expedition

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