Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun   Inability to perceive or distinguish certain colors, especially red-green color blindness . It has various forms and degrees.
- noun   Achromatopsia .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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								"Daltonism," does not see things through a medium charged with the national colour, and Miss Gardiner is a true type of downright landlordism such as would not be complained of in England, but in Disturbed Ireland Being the Letters Written During the Winter of 1880-81. Bernard H. Becker 
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								In fact, colour blindness was known, for a considerable time during the last century, as 'Daltonism', since it was through the publication of Dalton's self-observations that for the first time general attention was drawn to this phenomenon. Man or Matter Ernst Lehrs 
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								For example the atomic structure of matter the central organizing theory of the basic science chemistry is “laced with Daltonism”-to paraphrase Mr. Buckingham. A Word About Intelligent Design Creationism - The Panda's Thumb 2007 
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								Daltonism, not to enjoy the theatre; not to enjoy it, at least in the reality, when there or just after coming away. Hortus Vitae Essays on the Gardening of Life Vernon Lee 1895 
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								Like Paul Gauguin, he saw many countries, and his eyes were trained to form, though not colour -- he suffered from Daltonism -- for when he began to paint he discovered he was totally colour-blind. Promenades of an Impressionist James Huneker 1890 
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								We don’t talk about “Daltonism” or “Salkism” or “Einsteinism” or “Pasteurism”. A Study in Anti-Evolution Shamelessness - The Panda's Thumb 2005 
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