IPA: /ˌdjuːtəˈreɪnəʊp/
KK: /djuːˈtɛrəˌnoʊp/
A person who has a type of color blindness that makes it difficult to distinguish between red and green colors.
The artist had to adjust his palette because he was a deuteranope and couldn't see the colors as others did.
Deuteranope is formed from "deutero-" (from Greek "deuteros", meaning second) and "anope" (from Greek "anops", meaning blind). The term refers to a type of color blindness characterized by the inability to perceive green light, thus being 'secondarily blind' to certain colors.
Think of 'second' ('deutero-') and 'blindness' ('anope') to remember that a deuteranope is someone who is secondarily blind to certain colors, particularly green.
No commonly confused words.