Search Result for "dichromasy": 
Wordnet 3.0

NOUN (1)

1. a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision);
[syn: dichromacy, dichromatism, dichromatopsia, dichromia, dichromasy]



WordNet (r) 3.0 (2006):

dichromasy
    n 1: a deficiency of color vision in which the person can match
         any given hue by mixing only two other wavelengths of light
         (as opposed to the three wavelengths needed by people with
         normal color vision) [syn: dichromacy, dichromatism,
         dichromatopsia, dichromia, dichromasy]