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Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To nyctalopia
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Nyctalopia
has a plethora of syllables.
So is sesquipedalianism. Does it mean:
| given to using long words. |
| the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language). |
Collins
World English Dictionary
| nyctalopia (ˌnɪktəˈləʊpɪə) | |
| —n | |
| Compare hemeralopia Nontechnical name: night blindness inability to see normally in dim light | |
| [C17: via Late Latin from Greek nuktálōps, from nux night + alaos blind + ōps eye] | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary
nyctalopia nyc·ta·lo·pi·a (nĭk'tə-lō'pē-ə)
n.
A condition of the eyes in which vision is normal in daylight or other strong light but is abnormally weak or completely lost at night or in dim light and that results from vitamin A deficiency, disease, or hereditary factors. Also called night blindness.
nyc'ta·lo'pic (-lō'pĭk, -lŏp'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia
nyctalopia
failure of the eye to adapt promptly from light to darkness that is characterized by a reduced ability to see in dim light or at night. It occurs as a symptom of numerous congenital and inherited retinal diseases or as a result of vitamin A deficiency.
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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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