prop·a·gan·da n.
1. The systematic propagation of a doctrine or cause or of information reflecting the views and interests of those advocating such a doctrine or cause.
2. Material disseminated by the advocates or opponents of a doctrine or cause: wartime propaganda.
3. Propaganda Roman 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.
[Short for New Latin Sacra Congregātiō dē Prōpagandā Fidē