from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Deliberately misleading information announced publicly or leaked by a government or especially by an intelligence agency in order to influence public opinion or the government in another nation: "He would be the unconscious channel for a piece of disinformation aimed at another country's intelligence service” ( Ken Follett).
- n. Dissemination of such misleading information.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The dissemination of intentionally false information to deliberately confuse or mislead.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. misinformation that is deliberately disseminated in order to influence or confuse rivals (foreign enemies or business competitors etc.)
Possibly translation of Russian dezinformatsiya.(American Heritage® Dictionary of the English Language, Fourth Edition)
From dis- + information, perhaps after Russian дезинформация (dezinformácija), in turn from French désinformation. (Wiktionary)