lattice

Concise Oxford English Dictionary © 2008 Oxford University Press:
lattice/ˈlatɪs/

▶noun

• 1 a structure or pattern consisting of strips crossing each other with square or diamond-shaped spaces left between.

• 2 Physics a regular repeated three-dimensional arrangement of atoms, ions, or molecules in a metal or other crystalline solid.

– derivatives
latticed adjective,
latticework noun.

– origin ME: from OFr. lattis, from latte ‘lath’, of Gmc origin.