noun
- Dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue.
- synonyms: red-blindness
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). protanopia. Retrieved September 22, 2026, from http://smartdefine.org/protanopia/definitions/1245700 |
| Chicago | WordNet. 2010. "protanopia" http://smartdefine.org/protanopia/definitions/1245700 (accessed September 22, 2026). |
| Harvard | WordNet 2010, protanopia, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/protanopia/definitions/1245700>. |
| MLA | WordNet. "protanopia" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/protanopia/definitions/1245700> |