PROTANOPIA

protanopia, red-blindness

(noun) dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue

Source: WordNet® 3.1

Etymology

Noun

protanopia (usually uncountable, plural protanopias)

(pathology) A form of color blindness. Involves a defect in distinguishing between red and green.

Source: Wiktionary

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