Definition of "octahedrons" [octahedrons]

• Plural form of octahedron. (noun)

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• "According to Plato earth was composed of cubes, fire of regular pyramids, air of regular octahedrons, water of regular icosahedrons."
• "Its crystals are small, flattened octahedrons, growing in the shape of a tree."
• "For it was impossible that, out of an unsteady and confused matter, the equality of the sides, the likeness of the angles, and the exact proportion of octahedrons, icosahedrons, pyramids, and cubes should be deduced, unless by some power that terminated and shaped every particle of matter."