- inability to distinguish one or several chromatic colors, independent of the capacity for distinguishing light and shade.
- complete inability to distinguish colors of the spectrum, with all objects appearing as shades of gray, black, and white, varying only as to lightness and darkness; achromatopsia.
Origin of color blindness
Examples from the Web for color blindness
In comparing notes with my Philosopher I am chagrined at my own color-blindness.By the Christmas Fire
Samuel McChord Crothers
Color-blindness is not a defect of the eye, but a defect of the brain.How to Become Rich
In color-blindness, the system is reduced to one or two dimensions, instead of three.Psychology
Robert S. Woodworth
It is a case of color-blindness, as it were—supposing you two were colors.Rodman the Keeper
Constance Fenimore Woolson
Apart from color-blindness and such possibilities, we see the Hall in different perspectives.Essays in Radical Empiricism
Word Origin and History for color blindness
1844, replacing Daltonism (after English chemist John Dalton, 1766-1844, who published a description of it in 1794); in figurative use, with reference to race or ethnicity, attested from 1866, American English. Related: color blind (adj.).
- Deficiency of color perception, whether hereditary or acquired, partial or complete.