Great cuboctachoron

The great cuboctachoron or gaco is a scaliform polychoron that consists of 16 cubes and 8 blends of 2 octagrammic prisms. Two cubes and three blends of 2 octagrammic prisms meet at each vertex.

It can be formed as a blend of a great spinoprismatotesseractioctachoron and an octagrammic diorthoprism.

It has the same vertex figure as the great rhombihexahedral prism; the equilateral triangles still correspond to cubes, but the butterfly corresponds instead to a great rhombihexahedron and the isosceles triangles to octagrammic prisms.

This polychoron is in a subregiment of gittith, as it has its vertices and some but not all of its edges.