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distant early warning

British  

noun

  1. a US radar detection system to warn of missile attack See also DEW line

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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A particular point of relationship arises from the fact that the key to civil defense is the expanded continental defense program, including the distant early warning system.

From State of the Union Address by Eisenhower, Dwight D. (Dwight David)