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color blindness

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
1835-45 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for color-blindness
Historical Examples
  • But there are some who inherit or develop various degrees of color-blindness; and a word in their behalf may be opportune.

    A Color Notation Albert H. Munsell
  • color-blindness is not a defect of the eye, but a defect of the brain.

    How to Become Rich William Windsor
  • The Belgian government instituted an investigation into the cause of the prevalence of color-blindness.

    A Practical Physiology Albert F. Blaisdell
  • In comparing notes with my Philosopher I am chagrined at my own color-blindness.

    By the Christmas Fire Samuel McChord Crothers
  • The inheritance of various other conditions in man follows more or less accurately the same course as color-blindness.

    Being Well-Born Michael F. Guyer
  • 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.

  • Symonds compared inversion to color-blindness; and such a comparison is reasonable.

  • These contrasted cases are indeed convenient tests for color-blindness.

    The Creed of the Old South 1865-1915 Basil L. Gildersleeve
Word Origin and History for color-blindness

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.).

Online Etymology Dictionary, © 2010 Douglas Harper
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color-blindness in Medicine

color blindness n.
Deficiency of color perception, whether hereditary or acquired, partial or complete.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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