A person who is color-blind, particularly someone unable to distinguish red and green colors.
From the name John Dalton plus the agent suffix '-ist', meaning a person who has or practices something, in this case a person with Daltonism.
A 'daltonist' is someone experiencing the world in a fundamentally different way, and yet John Dalton became one of history's greatest chemists—reminding us that different ways of seeing don't limit ability, they just offer alternative perspectives on the universe.
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