Source : Webster's Revised Unabridged Dictionary (1913)

Speciosity \Spe`ci*os"i*ty\, n.; pl. {Speciocities}. [Cf. LL.
   {speciositas}.]
   1. The quality or state of being specious; speciousness.

            Professions built so largely on speciosity, instead
            of performance.                       --Carlyle.

   2. That which is specious. --Dr. H. More.