deuteranopia
noun
deu·ter·an·opia
ˌdü-tə-rə-ˈnō-pē-ə 
also ˌdyü-
: color blindness marked by usually complete loss of ability to distinguish colors
Examples of deuteranopia in a Sentence
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Red-green color blindness is broadly organized into four types, protanomaly, protanopia, deuteranomaly, and deuteranopia, all of which have to do with how the cones in the eye function.
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Fernando Alfonso Iii, Houston Chronicle, 19 Dec. 2017
One of these is for players with normal vision; the other three cater to those with protanopia, deuteranopia and tritanopia (which correspond to people’s difficulties sensing red, green and blue light respectively).
—The Economist, 30 Sep. 2017
The most common type of colour blindness, for example, is deuteranopia.
—The Economist, 30 Sep. 2017
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Fernando Alfonso Iii, Houston Chronicle, 19 Dec. 2017
One of these is for players with normal vision; the other three cater to those with protanopia, deuteranopia and tritanopia (which correspond to people’s difficulties sensing red, green and blue light respectively).
—The Economist, 30 Sep. 2017
The most common type of colour blindness, for example, is deuteranopia.
—The Economist, 30 Sep. 2017
Cite this Entry
“Deuteranopia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deuteranopia. Accessed 24 Jul. 2025.
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deuteranopia
noun
deu·ter·an·opia
ˌd(y)üt-ə-rə-ˈnō-pē-ə
: color blindness marked by usually complete loss of ability to distinguish colors
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