lattice-n; 3 Senses

Sense Number 1: a physical framework of crossing strips, often wooden

Commentary: LATTICE[+form][+physical][+structure][+framework][+crossing][+strips]

Roses climbed the lattices at the edge of Mary's garden.
We looked up through the lattice of branches at the blue sky.
Betty crossed strops of dough to make a lattice on top of the cherry pie.
I handed money through the lattice to the ticket agent.

WordNet 3.0 Sense Numbers: 2, 3

Sense Number 2: a 3-dimensional uniform and repeating arrangement of particles

Commentary: LATTICE[+form][+physical][+arrangement][+3D][+uniform][+repetitive][+particles]

The metal's atoms are arranged in a lattice.
The molecules of the crystal form a symmetric lattice.

WordNet 3.0 Sense Numbers: 1

Sense Number 3: a partially-ordered mathematical set

Commentary: LATTICE[+relation][+mathematical][+set][+partially_ordered]
NOTE: a lattice has, for each pair of elements, a lowest upper bound and a greatest lower bound

This book covers lattices, semi-lattices and group theory.
The least upper bound for a pair of elements in a lattice is called a join.

WordNet 0.0 Sense Numbers: 3