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Definition of colour blindness noun from the Oxford Advanced Learner's Dictionary

colour blindness

noun
 
/ˈkʌlə blaɪndnəs/
 
/ˈkʌlər blaɪndnəs/
(US English color blindness)
[uncountable]
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  1. lack of the ability to see the difference between some colours, especially red and green; lack of the ability to see colours at all (although this is rare in humans)
  2. the practice of treating people with different coloured skin in exactly the same way
trait
noun
 
 
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B2
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