from the GNU version of the Collaborative International Dictionary of English
- n. inability to distinguish blue and yellow.
from The Century Dictionary and Cyclopedia
- n. A supposed form of color-blindness in which the subject is unable to distinguish the fundamental color blue.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. rare form of dichromacy characterized by a lowered sensitivity to blue light resulting in an inability to distinguish blue and yellow
Sorry, no etymologies found.
The earliest and most prominent of the _general symptoms_ are severe paroxysmal headache, optic neuritis, with choked disc and limitation of the field for blue, amounting sometimes to blue-blindness