from The Century Dictionary and Cyclopedia
- n. The state of being red-blind; a form of color-blindness in which there is inability to distinguish the color red. See color-blindness.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue
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