Noun
The word is derived from octahedron
Each of the tetrahedral compounds is self-dual, and the compound of 5 cubes is dual to the compound of 5 octahedra. Source: Internet
Eight of these irregular octahedra can be attached to the triangular faces of a regular octahedron to obtain the cuboctahedron. Source: Internet
As cells must fit around an edge, : * The rectified 16-cell is the regular 24-cell and vertices are all equivalent octahedra are regular bipyramids. Source: Internet
In the lattice of corundum, the oxygen atoms form a slightly distorted hexagonal close packing in which two thirds of the gaps between the octahedra are occupied by aluminum ions. Source: Internet
Other convex octahedra More generally, an octahedron can be any polyhedron with eight faces. Source: Internet
Technetium carbonyl (Tc 2 (CO) 10 ) is a white solid. citation In this molecule, two technetium atoms are weakly bound to each other; each atom is surrounded by octahedra of five carbonyl ligands. Source: Internet