Noun
A figure by which a speaker formally declines to take notice of a favorable point, but in such a manner as to produce the effect desired. [For example, see Mark Antony's oration. Shak., Julius Caesar, iii. 2.]
Source: Webster's dictionaryHippolytus In Philosophumena Hippolytus provides an extensive quotation of the document called Apophasis Megale or Great Revelation which the author believed to be written by Simon himself. Source: Internet