DICT.TW Dictionary Taiwan

 tes·ta /ˈtɛstə/
 種皮

 Test Tes·ta n.; pl. E. Tests L. Testae
 1. Zool. 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.
 ◄ ►

 testa
      n : protective outer layer of seeds of flowering plants [syn: episperm,
           seed coat]
      [also: testae (pl)]