Definition of tritanopia in English:


Syllabification: trit·an·o·pi·a
Pronunciation: /ˌtrītnˈōpēə


  • A rare form of color-blindness resulting from insensitivity to blue light, causing confusion of greens and blues. Compare with protanopia.
    More example sentences
    • Protanopia, deuteranopia and tritanopia are all types of dichromatism.
    • Sometimes tritanopia occurs due to disease, because the short wavelength cone is more fragile than the other cone types.
    • With tritanopia, the person is deficient in blue and yellow perception, although he is still sensitive to red and green.


early 20th century: from trito- 'third' (referring to blue as the third color in the spectrum) + an-1 'without' + -opia.

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