lucidness

from WordNet (r) 3.0 (2006)

lucidness
    n 1: free from obscurity and easy to understand; the
         comprehensibility of clear expression [syn: {clarity},
         {lucidity}, {lucidness}, {pellucidity}, {clearness},
         {limpidity}] [ant: {abstruseness}, {obscureness},
         {obscurity}, {reconditeness}, {unclearness}]

from The Collaborative International Dictionary of English v.0.48

Lucidness \Lu"cid*ness\, n.
   The quality of being lucid; lucidity.
   [1913 Webster]