octohedron

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English

Noun

octohedron (plural octohedra or octohedrons)

  1. Alternative form of octahedron
    • 1795, J G Schmeisser, “Zinc”, in A System of Mineralogy, Formed Chiefly on the Plan of Cronstedt, volume II, London: C. Dilly , page 199:
      Its primitive figure ſeems to be the regular tetrahedron, which is variouſly modified by truncation, making it appear as octohedrons or hex-octohedrons.