daltonism

[ dawl-tn-iz-uhm ]

noun

, (sometimes initial capital letter)

1. color blindness, especially the inability to distinguish red from green.

daltonism

/ ˈdɔːltəˌnɪzəm; dɔːlˈtɒnɪk /

noun

1. colour blindness, esp the confusion of red and green

Derived Forms

• daltonic, adjective

Other Words From

• dal·ton·ic [dawl-, ton, -ik], adjective

Word History and Origins

Origin of daltonism¹

1835–45; J. Dalton + -ism

Word History and Origins

Origin of daltonism¹

C19: from French daltonisme, after John Dalton

Example Sentences

The diseases known as Daltonism or colour-blindness, and hmophilia or the bleeding disease, are certainly hereditary.

From Project Gutenberg

Certain authorities on art are said to regard the great Montalbanais as a victim of daltonism—in other words, colour-blind!

From Project Gutenberg

Colour-blindness or Daltonism has been recorded (Horner) through the males only of seven generations.

From Project Gutenberg

An interesting example is the common type of color blindness known as Daltonism.

From Project Gutenberg

Daltonism, dal′ton-izm, n. colour-blindness: inability to distinguish certain colours.

From Project Gutenberg