Canonical coordinates for the vertices of a truncated hexahedron centered at the origin are (±ξ, ±1, ±1), (±1, ±ξ, ±1) and (±1, ±1, ±ξ), where ξ = -1, which probably isn't an important enough constant to have any special name.
It has 6 regular octagonal faces, 8 regular triangular faces, 24 vertices and 36 edges.
See Cube/Hexahedron.
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