We found 18 dictionaries that define the word civil defense:

General (14 matching dictionaries)

1. civil defense: Merriam-Webster
2. civil defense: Oxford Learner's Dictionaries
3. civil defense: American Heritage Dictionary of the English Language
4. civil defense: Vocabulary.com
5. civil defense: Wiktionary
6. civil defense: The Wordsmyth English Dictionary-Thesaurus
7. civil defense: Infoplease Dictionary
8. civil defense: Dictionary.com
9. Civil Defense, Civil defense: Wikipedia, the Free Encyclopedia
10. civil defense: Rhymezone
11. civil defense: FreeDictionary.org
12. civil defense: Mnemonic Dictionary
13. civil defense: TheFreeDictionary.com

Computing (1 matching dictionary)

14. civil defense: Encyclopedia

Medicine (2 matching dictionaries)

15. Medical Dictionary (No longer online)
16. online medical dictionary (No longer online)

Tech (1 matching dictionary)

17. DOD Dictionary of Military Terms (No longer online)

(Note: See civil_defenses as well.)

Definitions from Wiktionary (civil defense) ▸ noun:  Efforts to protect the citizens of a state from military attack. Similar: civil defence, point defence, space defense, def., defence diplomacy, ecodefence, damage control, eco-defense, defense in depth, space defence, more... Opposite: offense, aggression, attack Types: disaster relief, first responders, more... Phrases: office of civil and defense mobilization, Civil defense siren, Civil defense in the United States, Civil defense in Israel, more... ▸ Words similar to civil defense ▸ Usage examples for civil defense ▸ Idioms related to civil defense ▸ Wikipedia articles (New!) ▸ Words that often appear near civil defense ▸ Rhymes of civil defense ▸ Invented words related to civil defense