Source : Webster's Revised Unabridged Dictionary (1913)

Cancellate \Can"cel*late\, a. [L. cancellatus, p. p. of
   cancellare, See {Cancel}, v. t.]
   1. (Bot.) Consisting of a network of veins, without
      intermediate parenchyma, as the leaves of certain plants;
      latticelike.

   2. (Zo["o]l.) Having the surface coveres with raised lines,
      crossing at right angles.

Source : WordNet®

cancellate
     adj 1: having a latticelike structure pierced with holes or windows
            [syn: {cancellated}, {clathrate}]
     2: having an open or latticed or porous structure [syn: {cancellated},
         {cancellous}]