a. Cryst. [f. mod.L. *tessula, irreg. dim. of TESSERA + -AR.] = TESSERAL 2.

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1796.  Kirwan, Elem. Min. (ed. 2), I. 139. In nodules, or in half rounded masses, or tessular.

2

1805–17.  R. Jameson, Char. Min. (ed. 3), 132. Where there are many crystals together, but merely simply aggregated; and these are either, 1. On one another;… [this] occurs principally in tessular crystals, as in galena or lead-glance, and calcareous-spar.

3

1854.  Pereira’s Pol. Light, 165. The equiaxed crystals constitute one system, called the cubic, octohedral or tessular system.

4

1869.  Phillips, Vesuv., x. 294. The crystallization is on the tessular pattern.

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