1.Any work of wood, metal, plastic, or other solid material, made by crossing a series of parallel laths, or thin strips, with another series at a diagonal angle, and forming a network with openings between the strips; as, the lattice of a window; called also latticework. "The mother of Sisera looked out at a window, and cried through the lattice."
2.(Her.) The representation of a piece of latticework used as a bearing, the bands being vertical and horizontal.
3.(Crystallography) The arrangement of atoms or molecules in a crystal, represented as a repeating arrangement of points in space, each point representing the location of an atom or molecule; called also crystal lattice and space lattice.