Source : Webster's Revised Unabridged Dictionary (1913)

Virtuosity \Vir`tu*os"i*ty\, n.
   1. The quality or state of being a virtuoso; in a bad sense,
      the character of one in whom mere artistic feeling or
      [ae]sthetic cultivation takes the place of religious
      character; sentimentalism.

            This famous passage . . . over which the virtuosity
            of modern times, rejoicing in evil, has hung so
            fondly.                               --C. Kingsley.

   2. Virtuosos, collectively. --Carlyle.

   3. An art or study affected by virtuosos.

Source : WordNet®

virtuosity
     n : technical skill or fluency or style exhibited by a virtuoso