laterite
/ˈlætəraɪt/noun
mass noun
1- a reddish clayey material, hard when dry, forming a topsoil in some tropical or subtropical regions and sometimes used for building（热带、亚热带地区有时用于建筑的）红黏土。
1.1
- Geology a clayey soil horizon rich in iron and aluminium oxides, formed by weathering of igneous rocks in moist warm climates【地质】红矾土层, 红土层。
派生词
lateritic
adjective词源
early 19th cent.: from Latin later 'brick' + -ITE1 .