Word Study
protanopia
WORDNET DICTIONARY
Noun protanopia has 1 sense
- protanopia(n = noun.state) red-blindness - dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue; Array is a kind of red-green color blindness, red-green colour blindness, red-green dichromacy
Derived form adjective protanopic1
For further exploring for "protanopia" in Webster Dictionary Online