The term SEED SHELL is composed of four words: POD (3 letters), HULL (4 letters), TESTA (5 letters), and HUSK (4 letters). A seed POD, or a POD, is a dry fruit that contains seeds. The HULL is the outer covering of a seed, which protects the seed from damage and helps it to retain moisture. Testa is the technical term for the seed coat, which is the layer of tissue between the HULL and the seed itself. Finally, a HUSK is the dry outer covering of certain fruits or seeds, such as corn. Together, these four words form the term SEED SHELL, which refers to the protective layers around a seed.