PROPAGANDA ETYMOLOGY
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propaganda (n.) 1718, "committee of cardinals in charge of Catholic missionary work," short for Congregatio de Propaganda Fide "congregation for propagating the faith," a committee of cardinals established 1622 by Gregory XV to supervise foreign missions. The word is properly the ablative fem. gerundive of Latin propagare (see propagation).Hence, "any movement to propagate some practice or …'''
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