Source : Webster's Revised Unabridged Dictionary (1913)

Copiousness \Co"pi*ous*ness\, n.
   The state or quality of being copious; abudance; plenty;
   also, diffuseness in style.

         To imitatethe copiousness of Homer.      --Dryden.

   Syn: Abudance; plenty; richness; exuberance.

Source : WordNet®

copiousness
     n : the property of a more than adequate quantity or supply; "an
         age of abundance" [syn: {abundance}, {teemingness}] [ant:
          {scarcity}]