plesiohedron

English

Etymology

From plesio- +‎ -hedron.

Noun

plesiohedron (plural plesiohedra)

1. (geometry) A special kind of space-filling polyhedron, defined as the Voronoi cell of a symmetric Delone set. Three-dimensional Euclidean space can be completely filled by copies of any one of these shapes, with no overlaps.

   The plesiohedra include such well-known shapes as the cube, hexagonal prism, rhombic dodecahedron, and truncated octahedron.