Etymology

icosasphere

I1C3O1S1A1S1P3H4E1R1E1

Today it means: A geometric figure with twenty or more triangular faces producing a semi-spherical solid. Full definition →

English sphere ← Middle English spere ← Old French sphere
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The story

  1. Englishicosa-
  2. Ancient Greekσφαῖρᾰ (sphaîră)
  3. Latinsphaera
  4. Late Latinsphēra
  5. Old Frenchsphere
  6. Middle Englishspere
  7. Englishsphere
  8. English todayicosasphere

From icosa- (“twenty”) + sphere.

Etymology from Wiktionary, CC BY-SA 4.0.