(Q7226669)
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Wikipedia(2 entries)
- enwiki Polyominoid
- ruwiki Полиминоид
set of equal squares in 3D space, joined edge to edge at 90- or 180-degree angles; includes the polyomino (planar polyominoid). The surface of a cube is a hexominoid,6-cell polyominoid, and many other polycubes have polyominoids as their boundaries