A lattice is a structure made of strips of material crossed over each other in a regular pattern, leaving open spaces in between.
From Old French *latis*, meaning lathwork or trellis, from *latte*, a thin strip of wood. It originally referred to wooden frameworks used for windows, fences, and garden structures.
Scientists borrowed *lattice* to describe the invisible patterns in crystals and atoms, because the shapes looked like tiny repeating fences. So a pie crust lattice and a crystal lattice share the same basic grid idea.
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