See propaganda in Webster's New World College Dictionary
noun
R.C.Ch. a committee of cardinals, the Congregation for the Propagation of the Faith, in charge of the foreign missions
any systematic, widespread dissemination or promotion of particular ideas, doctrines, practices, etc. to further one's own cause or to damage an opposing one
ideas, doctrines, or allegations so spread: now often used disparagingly to connote deception or distortion
See propaganda in American Heritage Dictionary 4
(prŏpˌə-gănˈdə)
noun
The systematic propagation of a doctrine or cause or of information reflecting the views and interests of those advocating such a doctrine or cause.
Material disseminated by the advocates or opponents of a doctrine or cause: wartime propaganda.
PropagandaRoman Catholic Church A division of the Roman Curia that has authority in the matter of preaching the gospel, of establishing the Church in non-Christian countries, and of administering Church missions in territories where there is no properly organized hierarchy.