The gyrated tetrahedral-octahedral honeycomb or gyrated alternated cubic honeycomb is a space-filling tessellation (or honeycomb) in Euclidean 3-space made up of octahedra and tetrahedra in a ratio of 1:2.
It is vertex-uniform with 8 tetrahedra and 6 octahedra around each vertex.
It is not edge-uniform. All edges have 2 tetrahedra and 2 octahedra, but some are alternating, and some are paired.
Read more about Gyrated Tetrahedral-octahedral Honeycomb: Construction By Gyration, Construction By Alternation