Medial biomnisnub decachoron

The medial biomnisnub decachoron or mebosid is a convex isogonal polychoron that consists of 10 snub tetrahedra, 40 triangular antiprisms of two kinds, 30 tetragonal disphenoids, 120 phyllic disphenoids of two kinds and 360 irregular tetrahedra of three kinds. However, it cannot be made uniform.

The polychoron resembles the great biomnisnub decachoron in every way except for the vertex figure's topology, in which the medial version's 5-valence vertex is not adjacent to the 6- and 8-valence vertices, unlike the great biomnisnub decachoron.