Acronym	gondip
Name	great octagonal spinoduoprism
Cross sections	©
Circumradius	sqrt[(3-sqrt(2))/2] = 0.890446
Colonel of regiment	(is itself locally convex – uniform polychoral members: by cells: cube tet trip gondip 64 64 128 & others)
Face vector	128, 512, 640, 256
External links

Gondip can be obtained as a blend of 4 quidpith. Infact its vertex figure itself is a blend of 2 vertex figures of quidpith.

As abstract polytope gondip is isomorphic to ondip, which does not have other cells, but would be derived as a blend from 4 sidpith.

Incidence matrix

128 |   4   2   2 |   6   4   4   4 |  2   6  4
----+-------------+-----------------+----------
  2 | 256   *   * |   2   1   1   0 |  1   2  1
  2 |   * 128   * |   2   2   0   2 |  1   3  2
  2 |   *   * 128 |   0   0   2   2 |  0   2  2
----+-------------+-----------------+----------
  3 |   2   1   0 | 256   *   *   * |  1   1  0
  4 |   2   2   0 |   * 128   *   * |  0   1  1
  4 |   2   0   2 |   *   * 128   * |  0   1  1
  4 |   0   2   2 |   *   *   * 128 |  0   1  1
----+-------------+-----------------+----------
♦ 4 |   4   2   0 |   4   0   0   0 | 64   *  *
♦ 6 |   4   3   2 |   2   1   1   1 |  * 128  *
♦ 8 |   4   4   4 |   0   2   2   2 |  *   * 64