| tabula | Origin: L. 1. A table; a tablet. 2. <zoology> One of the transverse plants found in the calicles of certain corals and hydroids. Tabula rasa [L], a smoothed tablet; hence, figuratively, the mind in its earliest state, before receiving impressions from without; a term used by Hobbes, Locke, and others, in maintaining a theory opposed to the doctrine of innate ideas. Source: Websters Dictionary (01 Mar 1998) |
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| tabular | Having the form of, or pertaining to, a table (in any of the uses of the word). Specifically: Having a flat surface; as, a tabular rock. Formed into a succession of flakes; laminated. "Nodules . . . That are tabular and plated." (Woodward) Set in squares. Arranged in a schedule; as, tabular statistics. Derived from, or computed by, the use of tables; as, tabular right ascension. <mathematics> Tabular difference, wollastonite. Origin: L. Tabularis, fr. Tabula a board, table. See Table. Source: Websters Dictionary (01 Mar 1998) |
| tabulata | <zoology> An artificial group of stony corals including those which have transverse septa in the calicles. The genera Pocillopora and Favosites are examples. Origin: NL, fr. L. Tabulatus floored. Source: Websters Dictionary (01 Mar 1998) |
| tabule | Synonym: tablet. Origin: L. Tabula (05 Mar 2000) |
| tabun | Dimethylphosphoramidocyanidic acid, ethyl ester;an extremely potent cholinesterase inhibitor; the lethal dose for man is believed to be as low as 0.01 mg per kg; median lethal dosage (respiratory) is about 40 mg. Min/m3 for resting men. (05 Mar 2000) |