Definify.com
Webster 1913 Edition
Propaganda
1.
(R. C. Ch.)
(a)
A congregation of cardinals, established in 1622, charged with the management of missions.
(b)
The college of the Propaganda, instituted by Urban VIII. (1623-1644) to educate priests for missions in all parts of the world.
2.
Hence, any organization or plan for spreading a particular doctrine or a system of principles.