Source : Webster's Revised Unabridged Dictionary (1913)

Perspicuity \Per`spi*cu"i*ty\, n. [L. perspicuitas: cf. F.
   perspicuit['e].]
   1. The quality or state of being transparent or translucent.
      [Obs.] --Sir T. Browne.

   2. The quality of being perspicuous to the understanding;
      clearness of expression or thought.

   3. Sagacity; perspicacity.

   Syn: Clearness; perspicuousness; plainness; distinctness;
        lucidity; transparency. See {Clearness}.

Source : WordNet®

perspicuity
     n : clarity as a consequence of being perspicuous [syn: {perspicuousness},
          {plainness}]