| red-blindness 
 
 dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue
 • Syn:
 protanopia
 • Derivationally related forms:
 red-blind, protanopic (for: protanopia)
 • Hypernyms:
 red-green dichromacy, red-green color blindness, red-green colour blindness
 
 
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