Small diacositetracontatriacosihexacontaswirlprismatic hecatonicosatriacosihexacontachoron

The small dihecatontetraconta-trihecatonhexaconta swirlprismatic hecatonicosa-trihecatonhexacontachoron, abbreviated as the small 240-360 swirlprismatic 120-360choron or simply sidditsphit, is a nonconvex uniform polychoron. It is made out of 360 tetrahedra, 480 triangular prisms of two different types, and 240 tetrahemihexahedra.

Along with the great dihecatontetraconta-trihecatonhexaconta swirlprismatic hecatonicosa-trihecatonhexacontachoron, it is one of the first two new uniform polychora to be discovered since 2006. It was found in September 2020 by _Geometer, a member of the Hi.gher Space forum.