List of uniform polychora

Sorted here is the list of uniform polychora based on Jonathan Bowers' Polychoron Site. Currently, 2188 uniform polychora are known, plus two infinite families: the polygonal duoprisms and polygonal-antiprismatic prisms.

Category A: Duoprisms
These are prism products of two polygons. A subset of these are the prisms of 3-dimensional prisms.

Category B: Antiduoprisms
These are prisms of 3-dimensional antiprisms.

Category 1: Regulars
These are the flag-transitive uniform polychora. There are 6 convex regulars and 10 nonconvex regulars.

Category 2: Truncates
These are the truncations of the regular polychora and other non-rectates with uniform vertex figures.

Category 3: Triangular Rectates
These are the rectifications of regular polychora where three cells meet at an edge, and their facetings. There are 7 regiments which have 3 members in this category each (two of them have more members in other categories).

Category 4: Ico Regiment
The icositetrachoron is regular and is also the rectified hexadecachoron and the rectified demitesseract. This category contains all the members of its regiment except ico itself. There are 13 members in this category with three different types of symmetry. They could also be called the "square rectates."

Category 5: Pentagonal Rectates
These are the rectifications of the regular polychora where five cells meet at an edge. There are four regiments with 2 rectates and 13 faceted rectates each.

Category 6: Sphenoverts
This category includes the cantellated polychora, all polychora with wedge vertex figures, and their facetings. There are 24 regiments with 7 members each, although the Rico regiment contains 3 members counted previously.

Category 7: Bitruncates
These are the bitruncations and biquasitruncations of the regular polychora. They have either tetragonal disphenoid or digonal disphenoid vertex figures.

Category 8: Great Rhombates
These polychora, which include the cantitruncated polychora, have sphenoid vertex figures.

Category 9: Omnitruncates
These polychora are represented by Coxeter-Dynkin diagrams with all nodes ringed. Their vertex figures are either phyllic disphenoids (if they have doubled symmetry) or irregular tetrahedra.

Category 10: Prismatorhombates
These are polychora with trapezoidal pyramid or rectangular skew pyramid vertex figures and their facetings, including runcitruncations of the regular polychora.

Category 11: Antipodiumverts
These are the uniform polychora with triangular antipodium (or triangular antiprism) vertex figures and their facetings. There are 6 regiments, one which has 5 members and five with 7.

Category 12: Podiumverts
These are the uniform polychora with triangular podium vertex figures and their facetings. There are 4 regiments with 7 members each as well as 2 additional members of a previous regiment.

Category 13: Spic and Giddic Regiments
These are the polychora with square antiprism vertex figures and their facetings. Spic (small prismatotetracontoctachoron) is the runcination of ico, while its conjugate quippic (a member of the giddic regiment) is its conjugate and ico's quasiruncination. There are 2 regiments with 20 members each.

Category 14: Skewverts
These are the polychora with skewed-wedge vertex figures. There are 4 regiments of 15.

Category 15: Afdec Regiment
Afdec (antifrustary distetracontoctachoron) is a polychoron with a rectangular trapezoprism vertex figure. Its regiment has 53 members.

Category 16: Affixthi Regiment
Affixthi (antifrustary 600tris120choron) is a polychoron with a rectangular frustum vertex figure. Its regiment has 99 members.

Category 17: Sishi Regiment
The small stellated hecatonicosachoron (short name sishi), a regular polychoron, has several uniform facetings. These are those that are fully symmetric but not regular, numbering 14.

Category 18: Ditetrahedrals
This category contains three regiments with 37 members each. Their vertex figures are facetings of truncated tetrahedra or rhombitetratetrahedra.

Category 19: Prisms
These are the prisms of the uniform polyhedra, except for the cube whose prism is the tesseract, and the prisms and antiprisms whose prisms are in categories A and B. There are 74 of these.

Category 20: Miscellaneous
These are the atypical polychora that do not fit in any other large category. They include uniform swirlprisms, six sidpith or gittith-related polychora, normal snubs and 4D (duo)antiprism(oid)s.

Category 21: Padohi Regiment
Padohi (prismatodis120choron) is the runcinated small stellated hecatonicosachoron. Its vertex figure is a pentagonal antipodium. There are 81 members.

Category 22: Gidipthi Regiment
Gidipthi (great dipentary tris120choron) is a polychoron with a pentagonal podium vertex figure. There are 81 members in its regiment, including quipdohi (the conjugate of padohi).

Category 23: Rissidtixhi Regiment
Rissidtixhi is the rectification of sidtixhi from category 17. Its vertex figure is a ditrigonal prism. There are 157 members.

Category 24: Stut Phiddix Regiment
There are 79 uniform polychora in this regiment. The vertex figure is a triangular cupola.

Category 25: Getit Xethi Regiment
There are 79 uniform polychora in this regiment, including getit phiddix (the conjugate of stut phiddix). The vertex figure is a triangular cupola.

Category 26: Sabbadipady Regiment (Blends)
The regiment of the polychoron sabbadipady, created by blending siddapady and quit sishi.

Category 27: Sidtaps and Gidtaps
These are blended snubs; there are 2 regiments of 9. They are called the "baby monster snubs."

Category 28: Sadros Daskydox Regiment (Idcossids)
This was once tied as the largest known regiment of uniform polychora, with 177 nonfissary uniform members. The name "idcossid" derives from the first member discovered, which is exotic and no longer counted. Together with the next category, it forms the "monster snubs."

Category 29: Gadros Daskydox Regiment (Dircospids)
This was once tied as the largest known regiment of uniform polychora, with 177 nonfissary uniform members. The name "dircospid" derives from the first member discovered, which is exotic and no longer counted. Together with the previous category, it forms the "monster snubs."

Category 30: Disdi Regiment (Idtessids)
This regiment was first discovered in 2006 with the scaliform member Disdi, but in 2021, 333 uniform members were discovered, making it the current largest known regiment of uniform polychora. They have either pyrito-tesseractic or chiro-demitesseractic symmetry. "Idtessid" was never an actual OBSA, it is just a pun on "idcossid" and "tesseractic".