Main Entry: cy·to·di·ag·no·sis Pronunciation: "sIt-O-"dI-ig-'nO-s&s, -&g- Function: noun Inflected Form: pluralcy·to·di·ag·no·ses/-"sEz/ : diagnosis based upon the examination of cells found in the tissues or fluids of the body —cy·to·di·ag·nos·tic/-'näs-tik/adjective