from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An inherited defect in perception of red and green; red-green colorblindness.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative capitalization of Daltonism
from the GNU version of the Collaborative International Dictionary of English
- 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.
from The Century Dictionary and Cyclopedia
- n. Color-blindness.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red
After John Dalton.(American Heritage® Dictionary of the English Language, Fourth Edition)