GNU Collaborative International Dictionary of English

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Found 2 definitions 

  1.       

    Moonblink , n. A temporary blindness, or impairment of sight, said to be caused by sleeping in the moonlight; -- sometimes called nyctalopia.
    1913 Webster
    
      
    
  2.       

    ‖Nyctalopia , n. [L. nyctalopia, fr. nyctalops a nyctalops, Gr. νυκτάλωψ.  Gr. νυκτάλωψ meant, a person affected either with day blindness or with night blindness, and in the former case was derived fr. νύξ, νυκτός, night + ὤψ, ὠπός, the eye; in the latter, fr. νύξ + ἀλαός blind + ὤψ.] (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
    ☞ Some writers (as Quain) use the word in the opposite sense, night blindness. See Hemeralopia.
    1913 Webster

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