Test (?), Tes"ta (?), n.; pl. E. Tests (#), L. Testae (#). [L. testa a piece of burned clay, a broken piece of earthenware, a shell. See Test a cupel.]

1. Zool.

The external hard or firm covering of many invertebrate animals.

The test of crustaceans and insects is composed largely of chitin; in mollusks it is composed chiefly of calcium carbonate, and is called the shell.

2. Bot.

The outer integument of a seed; the episperm, or spermoderm.

© Webster 1913.

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