a joint U.S.-Canadian air force command responsible for detecting aircraft and space vehicles deemed a threat to the continental airspace.

Nor(th American) A(ir) D(efence Command). Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Abbreviations & Acronyms
North American Aerospace Defense Commandformerly North American Air Defense Command
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences for NORAD
Norad headquarters in the movie wargames is called the crystal palace.
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