[1] : The Collaborative International Dictionary of English v.0.48

nyctalopia \nyc`talo"pia\ ni^k`t.al=o"pi^.a, n.
   l. nyctalopia, fr. nyctalops a nyctalops, gr. nykta`lwps.
   gr. nykta`lwps meant, a person affected either with day
   blindness or with night blindness, and in the former case was
   derived fr. ny`x, nykto`s, night + 'w`ps, 'wpo`s, the eye; in
   the latter, fr. ny`x + 'alao`s blind + 'w`ps. med.
   a a disease of the eye, in consequence of which the patient
       can see well in a faint light or at twilight, but is
       unable to see during the day or in a strong light; day
       blindness.
   b see moonblink.
       1913 webster

   note: some writers as quain use the word in the opposite
         sense, night blindness. see hemeralopia.
         1913 webster
see also:
moonblink hemeralopia 

[2] : The Collaborative International Dictionary of English v.0.48

moonblink \moon"blink`\, n.
   a temporary blindness, or impairment of sight, said to be
   caused by sleeping in the moonlight; -- sometimes called
   nyctalopia.
   1913 webster
see also:
nyctalopia 

[3] : WordNet (r) 2.0

nyctalopia
     n : inability to see clearly in dim light; due to a deficiency
         of vitamin a or to a retinal disorder syn: night
         blindness, moon blindness
see also:
night blindness moon blindness 

Nyctalopia >> N Words
Nyctalopia, definition of term: Nyctalopia
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