One of the mysteries of the English language finally explained.
- another term for protanopia, a form of color-blindness
- ‘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.’
- ‘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.’
Mid 19th century: from the name of John Dalton, John + -ism.
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