Department of Defense

American  

noun

1. the department of the U.S. federal government charged with ensuring that the military capacity of the U.S. is adequate to safeguard the national security. DOD

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Department of Defense Cultural  

1. A department of the federal executive branch entrusted with formulating military policies and maintaining American military forces. Its top official is the civilian secretary of defense. It is headquartered in the Pentagon.

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Example Sentences

A similar name change took place at the Department of Defense - now known as the Department of War - without Congressional approval in September.

From BBC

Operated by California and Colorado National Guard troops, FireGuard uses Department of Defense satellites to detect and track wildfires, distributing unclassified information among firefighting networks, according to the National Guard.

From Los Angeles Times

The findings were reported in Nature Cell Biology and were supported in part by grants from the Department of Defense, the National Institutes of Health and the American Cancer Society.

From Science Daily

The Department of Defense’s inspector general can investigate allegations of wrongdoing in the department, and this includes the secretary.

From Salon

Department of Defense, as well as its deal with Saudi Arabia’s flagship miner announced in November.

From MarketWatch