A lattice forming part of a larger lattice with which it is coextensive, the atoms of which are typically distinguished by some property not possessed by the other atoms.
Origin
1920s. From sub- + lattice.
Definition of sublattice in US English:
sublattice
nounˈsʌblatɪs
A lattice forming part of a larger lattice with which it is coextensive, the atoms of which are typically distinguished by some property not possessed by the other atoms.