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testa |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Test \Test\, Testa \Tes"ta\, n.; pl E. {Tests}, L. {Test[ae]}. [L. testa a piece of burned clay, a broken piece of earthenware, a shell. See {Test} a cupel.] 1. (Zo["o]l.) The external hard or firm covering of many invertebrate animals. Note: 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. From WordNet r 1.6 [wn]: testa n : protective outer layer of seeds of flowering plants [syn: {episperm}, {seed coat}]
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