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protanomaly

[proht-n-om-uh-lee] /ˌproʊt nˈɒm ə li/
noun, Ophthalmology
1.
a defect of vision characterized by a diminished response of the retina to red.
Origin
1935-1940
1935-40; prot- + anomaly
Related forms
protanomalous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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