calcareous
/kælˈkeərɪəs/adjective
1- containing calcium carbonate; chalky含碳酸钙的; 白垩的。
1.1
- Ecology (of vegetation) occurring on chalk or limestone【生态】(植被)长在白垩(或石灰岩)上的。
词源
late 17th cent.: from Latin calcarius (from calx, calc- 'lime') + -EOUS.