Source : Webster's Revised Unabridged Dictionary (1913)

Glossiness \Gloss"i*ness\, n. [From {Glossy}.]
   The condition or quality of being glossy; the luster or
   brightness of a smooth surface. --Boyle.

Source : WordNet®

glossiness
     n : the property of being smooth and shiny [syn: {polish}, {gloss},
          {burnish}]