The Wigner--Seitz cell of a lattice point consists of points at least as close to it as to every other lattice point. Its faces lie on perpendicular bisectors to neighbouring lattice points.
Articles by others on the same topic
The Wigner-Seitz cell is a concept in solid-state physics and crystallography that is used to describe the local environment of atoms in a crystalline lattice. It is essentially a way to define a unit cell that encompasses the region around a lattice point, giving a clear representation of how space is partitioned among the particles in a crystal.