Source : Webster's Revised Unabridged Dictionary (1913)

Religiosity \Re*lig`i*os"i*ty\ (-l?j`?-?s"?-t?), n. [L.
   religiositas: cf. F. religiosit?.]
   The quality of being religious; religious feeling or
   sentiment; religiousness. [R.] --M. Arnold.

Source : WordNet®

religiosity
     n : exaggerated or affected piety and religious zeal [syn: {religiousism},
          {pietism}]