Hypertext Webster Gateway: "Daltonism"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Daltonism \Dal"ton*ism\, n.
Inability to perceive or distinguish certain colors, esp.
red; color blindness. It has various forms and degrees. So
called from the chemist Dalton, who had this infirmity.
--Nichol.
From WordNet (r) 1.7 (wn)
Daltonism
n : dichromacy characterized by a lowered sensitivity to green
light resulting in an inability to distinguish green and
purplish-red [syn: {deuteranopia}, {Daltonism}, {green-blindness}]
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