Meaning of deuteranopia in English:


Pronunciation /ˌdjuːt(ə)rəˈnəʊpɪə/


mass noun
  • Colour blindness resulting from insensitivity to green light, causing confusion of greens, reds, and yellows.

    Compare with protanopia

    ‘The genetic cause has been determined for several color vision defects, achromatopsia (the loss of all color vision), blue monochromatism, protanopia, deuteranopia, and enhanced S-cone syndrome.’
    • ‘Red-green deficiency (deuteranopia) is the most frequently diagnosed deficiency.’
    • ‘But it's important to remember that a measurable percentage of men have red-green colorblindness (deuteranopia); instructing them to click the green box for yes or the red box for no, for example, should be avoided.’
    • ‘Here's a handy list: primary atypical pneumonia, humectant, lapis lazuli, magniloquent, magnetohydrodynamic, deuteranopia, bryology, vorlage, Wesleyan.’


Early 20th century from deutero-‘second’ (the colour green being regarded as the second component of colour vision) + an-+ -opia.