Source : Webster's Revised Unabridged Dictionary (1913)

Lattice \Lat"tice\, v. i. [imp. & p. p. {Latticed}; p. pr. & vb.
   n. {Latticing}.]
   1. To make a lattice of; as, to lattice timbers.

   2. To close, as an opening, with latticework; to furnish with
      a lattice; as, to lattice a window.

   {To lattice up}, to cover or inclose with a lattice.

            Therein it seemeth he [Alexander] hath latticed up
            C[ae]sar.                             --Sir T.
                                                  North.

Lattice \Lat"tice\, n. [OE. latis, F. lattis lathwork, fr. latte
   lath. See {Latten}, 1st {Lath}.]
   1. Any work of wood or metal, made by crossing laths, or thin
      strips, and forming a network; as, the lattice of a
      window; -- called also {latticework}.

            The mother of Sisera looked out at a window, and
            cried through the lattice.            --Judg. v. 28.

   2. (Her.) The representation of a piece of latticework used
      as a bearing, the bands being vertical and horizontal.

   {Lattice bridge}, a bridge supported by lattice girders, or
      latticework trusses.

   {Lattice girder} (Arch.), a girder of which the wed consists
      of diagonal pieces crossing each other in the manner of
      latticework.

   {Lattice plant} (Bot.), an aquatic plant of Madagascar
      ({Ouvirandra fenestralis}), whose leaves have interstices
      between their ribs and cross veins, so as to resemble
      latticework. A second species is {O. Berneriana}. The
      genus is merged in {Aponogeton} by recent authors.

Source : WordNet®

lattice
     n 1: an arrangement of points or particles or objects in a
          regular periodic pattern in 2 or 3 dimensions
     2: small opening (like a window in a door) through which
        business can be transacted [syn: {wicket}, {grille}]
     3: framework consisting of an ornamental design made of strips
        of wood or metal [syn: {latticework}, {fretwork}]

Source : Free On-Line Dictionary of Computing

lattice
     
         A {partially ordered set} in which all finite subsets
        have a {least upper bound} and {greatest lower bound}.
     
        This definition has been standard at least since the 1930s and
        probably since Dedekind worked on lattice theory in the 19th
        century; though he may not have used that name.
     
        See also {complete lattice}, {domain theory}.
     
        (1999-12-09)