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

deuteranopic

ˌdü-tə-rə-ˈnō-pik 

-ˈnä-pik

 also  ˌdyü-

adjective

Examples of deuteranopia in a Sentence

Recent Examples on the Web

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. —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

Word History

Etymology

New Latin, from deuter- + a- entry 2 + -opia; from the blindness to green, regarded as the second primary color

First Known Use

circa 1901, in the meaning defined above

Medical Definition

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

deuteranopic

-ˈnō-pik  -ˈnäp-ik 

adjective