protanomaly

[ proht-n-om-uh-lee ]
/ ˌproʊt nˈɒm ə li /

noun Ophthalmology.

a defect of vision characterized by a diminished response of the retina to red.

Origin of protanomaly

First recorded in 1935–40; prot- + anomaly

OTHER WORDS FROM protanomaly

prot·a·nom·a·lous, adjective