declassification
dec·las·si·fication
noun
1.
reduction or removal by the government of restrictions on a classified document or weapon
Origin
From de- + classification.
Related words
Word family
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.