Look up: protanopia

1. 
   protanopia
   [n] - dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. 
   protanopia
   A form of dichromatism characterised by absence of the red-sensitive pigment in cones, decreased luminosity for long wavelengths of light, and confusion in recognition of red and green. ... Origin: G. Protos, first, + a-priv. + ops (op-) eye ... (05 Mar 2000) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
3. 
   protanopia
   red-blindness noun dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
4. 
   protanopia
   (pro″tә-no´pe-ә) color vision deficiency in which a person cannot distinguish red from green; popularly called “red blindness.” adj., protanop´ic., adj.
   Found on http://www.mercksource.com/pp/us/cns/cns
   
   
5. 
   protanopia
   (from the article `colour blindness`) Colour-blind persons may be blind to one, two, or all of the colours red, green, and blue. (Blindness to red is called protanopia; to green, ... ...normal people would see as different. About one percent of males are dichromats; they can mix all the colours of the spectrum, as they see them, ... ...
   Found on http://www.britannica.com/eb/a-z/p/122
   
   
6. 
   protanopia
   protanopia A visual defect in which the retina fails to respond to the color red; so named from blindness to the color red, which is regarded as the first of the primary colors.
   Found on http://www.wordinfo.info/words/index/inf