Definition of disinformation noun from the Oxford Advanced Learner's Dictionary

 

disinformation

 noun
noun
BrE BrE//ˌdɪsˌɪnfəˈmeɪʃn//
 
; NAmE NAmE//ˌdɪsˌɪnfərˈmeɪʃn//
 
[uncountable]
 
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false information that is given deliberately, especially by government organizations It was a very plausible piece of disinformation. Word Origin 1950s: formed on the pattern of Russian dezinformatsiya.
See the Oxford Advanced American Dictionary entry: disinformation