cambium
/ˈkæmbɪəm/noun
(pl.cambia 或cambiums)［mass noun］
- Botany a cellular plant tissue from which phloem, xylem, or cork grows by division, resulting (in woody plants) in secondary thickening【植】形成层。
派生词
cambial
adjective词源
late 16th cent. (denoting one of the alimentary humours once supposed to nourish the body)： from medieval Latin, 'change, exchange'.