From Online Dictionary of Crystallography
Supermaille (Fr). Überzelle (Ge).Supercella (It). 超単位胞 (Ja). Supercelda (Sp).
A cell C' obtained from a cell C by removing one or more translation vectors is called a supercell of C. The translation subgroup T' of the lattice L' built on C' is a subgroup of the translation subgroup T of the lattice L built on C and corresponds therefore to a sublattice of L.