ADJECTIVE (2)

1. of or pertaining to or arranged in table form;

2. flat; like a table in form;

The Collaborative International Dictionary of English v.0.48:

Tabular \Tab"u*lar\, a. [L. tabularis, fr. tabula a board,
   table. See Table.]
   Having the form of, or pertaining to, a table (in any of the
   uses of the word). Specifically:
   [1913 Webster]
   (a) Having a flat surface; as, a tabular rock.
       [1913 Webster]
   (b) Formed into a succession of flakes; laminated.
       [1913 Webster]

             Nodules . . . that are tabular and plated.
                                                  --Woodward.
       [1913 Webster]
   (c) Set in squares. [R.]
       [1913 Webster]
   (d) Arranged in a schedule; as, tabular statistics.
       [1913 Webster]
   (e) Derived from, or computed by, the use of tables; as,
       tabular right ascension.
       [1913 Webster]

   Tabular difference (Math.), the difference between two
      consecutive numbers in a table, sometimes printed in its
      proper place in the table.

   Tabular spar (Min.), wollastonite.
      [1913 Webster]

WordNet (r) 3.0 (2006):

tabular
    adj 1: of or pertaining to or arranged in table form
    2: flat; like a table in form

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "tabular":
   assorted, cataloged, classified, even, filed, flat, flattened,
   flush, graded, grouped, hierarchic, homaloidal, horizontal,
   indexed, level, on file, pigeonholed, placed, plain, plane,
   pyramidal, ranked, rated, rolled, smooth, smoothed out, smoothened,
   sorted, squashed, squashed flat, stratified, tabloid, trodden,
   trodden flat