ˌ ̷ ̷ ̷ ̷ ̷ ̷ˈnōpēə noun
( -s )
Etymology: New Latin, from deuter- (I) + a- (II) + -opia
: red-green blindness believed due to a defect in the optic nerve that interferes with normal transmission of red and green sensations and marked by confusion of purplish red and green — compare protanopia