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(DDN) A global communications network serving the US Department of Defense. Composed of MILNET, other portions of the Internet, and classified networks which are not part of the Internet. The DDN is used to connect military installations and is managed by the Defense Information Systems Agency.
(1994-12-01)
Nearby terms: Defense Advanced Research Projects Agency « Defense Calculator « Defense Communications Agency « Defense Data Network » Defense Data Network Network Information Center » Defense Information Systems Agency » Defense Trade Regulations
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