daltonism Meaning, Definition & Usage
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noun dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red
green-blindness; deuteranopia.
WordNet
Dal"ton*ism noun
Definitions
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.
