# achromatopsia

> English word · Noun · IPA /ˈə.kɹɒ.mə.tɒp.siə/

## Definitions
1. 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.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/achromatopsia