We found 10 dictionaries that define the word defense department:

General (8 matching dictionaries)

1. Defense Department: Vocabulary.com
2. defense-department: Wordnik
3. defense department: Dictionary.com
4. Defense department: Wikipedia, the Free Encyclopedia
5. Defense department: Rhymezone
6. defense department: FreeDictionary.org
7. defense department: Mnemonic Dictionary
8. Defense Department: TheFreeDictionary.com

Business (1 matching dictionary)

9. Defense Department: Legal dictionary

Computing (1 matching dictionary)

10. Defense Department: Encyclopedia

(Note: See defense_departments as well.)

Definitions from WordNet (Defense department) ▸ noun:  the federal department responsible for safeguarding national security of the UnitedStates; created in 1947 Phrases: defense department of, more... ▸ Words similar to defense department ▸ Usage examples for defense department ▸ Idioms related to defense department ▸ Wikipedia articles (New!) ▸ Words that often appear near defense department ▸ Rhymes of defense department ▸ Invented words related to defense department