Etymology

octahedron

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Today it means: a polyhedron with eight faces; the regular octahedron has regular triangles as faces and is one of the Platonic solids. Full definition →

Ancient Greek ὀκτάεδρον
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The story

  1. Ancient Greek · derived fromὀκτάεδρον
  2. English todayoctahedron

From Ancient Greek ὀκτάεδρον (oktáedron). By surface analysis, octa- + -hedron.

Etymology from Wiktionary, CC BY-SA 4.0.