Dictionary.com

daltonism

[ dawl-tn-iz-uhm ]
/ ˈdɔl tnˌɪz əm /
Save This Word!

noun (sometimes initial capital letter)Pathology.
color blindness, especially the inability to distinguish red from green.
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?

Origin of daltonism

1835–45; J. Dalton + -ism

OTHER WORDS FROM daltonism

dal·ton·ic [dawl-ton-ik], /dɔlˈtɒn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use daltonism in a sentence

British Dictionary definitions for daltonism

daltonism
/ (ˈdɔːltəˌnɪzəm) /

noun
colour blindness, esp the confusion of red and green

Derived forms of daltonism

daltonic (dɔːlˈtɒnɪk), adjective

Word Origin for daltonism

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
FEEDBACK