dichromat
/daɪˈkroʊmæt/
noun
- A person or animal who can see only two of the three basic colors, usually because of a form of color blindness.
- Many people do not realize they are a dichromat until they take a color vision test.
- The dog is a dichromat, so it sees the world in shades of blue and yellow.
- As a dichromat, she cannot tell the difference between red and green.