declassification > define
noun
- Reduction or removal by the government of restrictions on a classified document or weapon. .
by WordNet 3.0 © 2006 by Princeton University
(DoD) The determination that, in the interests of national security, classified information no longer requires any degree of protection against unauthorized disclosure, coupled with removal or cancellation of the classification designation.
by Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.