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
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
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 31 Oct. 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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