Etymology

acyanoblepsia

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Today it means: Inability to see the colour blue. Full definition →

English ablepsia ← Ancient Greek κῠᾰ́νεος (kŭắneos) ← Proto-Hellenic *ə-
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The story

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Hellenic*ə-
  4. Ancient Greekἀ- (a-)
  5. Englisha-
  6. Ancient Greekκῠᾰ́νεος (kŭắneos)
  7. Englishcyano-
  8. Englishablepsia
  9. English todayacyanoblepsia

From a- (“not”) + cyano- (“blue”) + ablepsia (“blindness”).

Etymology from Wiktionary, CC BY-SA 4.0.