- color blindness, especially the inability to distinguish red from green.
Origin of daltonism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for daltonism
Certain authorities on art are said to regard the great Montalbanais as a victim of daltonism—in other words, colour-blind!In the Heart of Vosges
Daltonism, dal′ton-izm, n. colour-blindness: inability to distinguish certain colours.
An interesting example is the common type of color blindness known as Daltonism.Physiology
Ernest G. Martin
Colour-blindness or Daltonism has been recorded (Horner) through the males only of seven generations.The Making of Species
The diseases known as Daltonism or colour-blindness, and hmophilia or the bleeding disease, are certainly hereditary.Parenthood and Race Culture
Caleb Williams Saleeby
- colour blindness, esp the confusion of red and green
C19: from French daltonisme, after John Dalton
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- An inherited defect in the perception of red and green; red-green colorblindness.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.