Thesaurus: testa

Related headwords

Definitions

1. n. The external hard or firm covering of many invertebrate animals.
2. n. The outer integument of a seed; the episperm, or spermoderm.
3. n. protective outer layer of seeds of flowering plants
4. 1. (Zoöl.) 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.
5. n. protective outer layer of seeds of flowering plants