Etymology

goniolens

G2O1N1I1O1L1E1N1S1

Today it means: A gonioscope. Full definition →

English lens ← Medieval Latin lēns ← Ancient Greek γωνίᾱ (gōníā)
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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. Medieval Latinlēns
  7. Englishlens
  8. English todaygoniolens

From gonio- + lens.

Etymology from Wiktionary, CC BY-SA 4.0.