Hypertext Webster Gateway: "tests"
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.
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