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Hypernym
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Tritanopia
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The American Heritage® Dictionary of the English Language, 4th Edition
n.
A visual defect characterized by the inability to discern blue and yellow.
Wiktionary, Creative Commons Attribution/Share-Alike License
n.
A form of color blindness. The person's retina does not respond to the blue color, due to lack of "blue" cone opsins.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n.
rare form of dichromacy characterized by a lowered sensitivity to blue light resulting in an inability to distinguish blue and yellow
Word Usage
"I have seen an Ishikawa for tritanopia, and can see it, although it's not as easy as the others."
Hypernym
Words that are more generic or abstract
yellow-blue dichromacy
yellow-blue color blindness
Cross Reference
protanopia
deuteranopia