What does "tabular" mean?

Tabular: Having the form of, or pertaining to, a table (in any of the uses of the word). Specifically: -- (a) Having a flat surface; as, a tabular rock. (b) Formed into a succession of flakes; laminated. Nodules . . . that are tabular and plated. Woodward. (c) Set in squares. [R.] (d) Arranged in a schedule; as, tabular statistics. (e) Derived from, or computed by, the use of tables; as, tabular right ascension. 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.