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A Writer's Dictionary:

Daltonism Definition


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Daltonism1
daltonism
noun
    1. Colour-blindness, especially confusion between red and green.
Etymology: 19c: from French daltonisme, named after UK scientist John Dalton (1766‐1844), who described his own symptoms.





Daltonism2
noun
    1. education.
      A school method by which each pupil pursues separately in their own way a course divided into monthly instalments, designed to suit each individual.
      Form: the Dalton plan
Etymology: 20c: first tried in 1920 at Dalton, Massachusetts.



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