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Also available:
World English Dictionary
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security clearance
se·cu·ri·ty clear·ance
noun
Definition:
permission allowing access:
official permission for somebody to have access to a secure facility or to information that has been classified for reasons of national security
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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