Source : Webster's Revised Unabridged Dictionary (1913)

Prolixity \Pro*lix"i*ty\, n. [L. prolixitas: cf. F.
   prolixit['e].]
   The quality or state of being prolix; great length; minute
   detail; as, prolixity in discourses and writings. ``For
   fulsomeness of his prolixitee.'' --Chaucer.

         Idly running on with vain prolixity.     --Drayton.

Source : WordNet®

prolixity
     n : boring verboseness [syn: {prolixness}, {long-windedness}, {wordiness}]