Source : Webster's Revised Unabridged Dictionary (1913)

Cognoscente \Cog`nos*cen"te\, n.; pl. {Cognoscenti}. [OIt.
   cognoscente, p. pr. of cognoscere, It. conoscere to know.]
   A connoisseur. --Mason.

Source : WordNet®

cognoscenti
     n : an expert able to appreciate a field; especially in the fine
         arts [syn: {connoisseur}]