Etymology

goniochromism

G2O1N1I1O1C3H4R1O1M3I1S1M3

Today it means: Synonym of iridescence. Full definition →

English chromism ← Ancient Greek χρῶμᾰ (khrômă) ← Proto-Hellenic *kʰrṓwmə
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The story

  1. Proto-Indo-European*ǵónu
  2. Proto-Hellenic*gónu
  3. Proto-Hellenic*gonwía
  4. Ancient Greekγωνίᾱ (gōníā)
  5. Englishgonio-
  6. Proto-Hellenic*kʰrṓwmə
  7. Ancient Greekχρῶμᾰ (khrômă)
  8. Englishchromo-
  9. Englishchromism
  10. English todaygoniochromism

From gonio- + chromism, referring to the fact that the colour changes depending on the angle of view.

Etymology from Wiktionary, CC BY-SA 4.0.