Definition of daltonism in English:


Line breaks: dal¦ton|ism
Pronunciation: /ˈdɔːlt(ə)nɪz(ə)m


  • another term for protanopia, a form of colour blindness.
    More example sentences
    • The number of colour-blind artists in the history of art is probably larger than usually assumed, bur it is not possible to demonstrate daltonism simply by looking at an artist's pictures.
    • The most common form of colorblindness is daltonism or a problem with red/green.
    • It is one of the tests of reference to screen daltonism.


mid 19th century: from the name of John Dalton, John + -ism.

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