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civil defense

noun

: 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
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The civil defense team was only able to retrieve 15 bodies and, with the ambulance full, roughly 20 were never recovered, according to the worker. Yahya Abou-Ghazala, CNN Money, 3 Dec. 2025 McGrath brings experience overseeing complex federal prosecutions, civil defense cases and crisis management. Linda McIntosh, San Diego Union-Tribune, 29 Nov. 2025 The city had just endured nearly two weeks of frequent civil defense sirens, announcing missiles crossing Jordanian airspace during the Israel-Iran war in June. NPR, 26 Nov. 2025 This demands extremely fast detection, early warning, and emergency response – key capabilities for modern military and civil defense forces. Bojan Stojkovski, Interesting Engineering, 9 Nov. 2025 See All Example Sentences for civil defense

Word History

First Known Use

1939, in the meaning defined above

Time Traveler
The first known use of civil defense was in 1939

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Cite this Entry

“Civil defense.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/civil%20defense. Accessed 6 Dec. 2025.

Kids Definition

civil defense

noun
: protective actions and emergency relief activities carried on by civilians in case of enemy attack or natural disaster

More from Merriam-Webster on civil defense

Last Updated: - Updated example sentences
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