'Tests' definitions:

Definition of 'Tests'

From: GCIDE
  • Test \Test\, Testa \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. [1913 Webster]
  • 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. [1913 Webster]
  • 2. (Bot.) The outer integument of a seed; the episperm, or spermoderm. [1913 Webster]

Words containing 'Tests'