Source : Webster's Revised Unabridged Dictionary (1913)

Nearsightedness \Near"sight`ed*ness\, n.
   See {Myopic}, and {Myopia}.

Source : WordNet®

nearsightedness
     n : (ophthalmology) eyesight abnormality resulting from the
         eye's faulty refractive ability; distant objects appear
         blurred [syn: {myopia}, {shortsightedness}] [ant: {hyperopia}]