colluvium
/kəˈluːvɪəm/noun
mass noun
- Geology material which accumulates at the foot of a steep slope【地质】崩积层。
派生词
colluvial
adjective词源
mid 20th cent.: from Latin colluvies 'confluence or collection of matter', from colluere 'to rinse', from col- 'together' + luere 'to wash'.