achromatopsia

/ˈə.kɹɒ.mə.tɒp.siə/

Ə · kɹɒ · mə · tɒp · siə (5 syllables)

English Noun

Definition

Total color blindness; the total inability to distinguish colors due to the absence of cone cells in the eyes.

Etymology

From German Achromatopsie, from Ancient Greek ἀχρώματος (akhrṓmatos), from ἀ- (a-, “without”) + χρῶμα (khrôma, “color”), + -opsie. By surface analysis, a- + chromato- + -opsia.