red-blindness

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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