DEFCON

DEFCON

[def-kon]
noun
any of several alert statuses for U.S. military forces, ranked numerically from normal, 5, to maximum readiness, 1.

Origin:
def(ense readiness) con(dition)

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Abbreviations & Acronyms
DEFCON
defense readiness condition
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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