laterite

n. 铁矾土, 红土带
【机】 红土, 砖红壤

形容词:lateritic 

lat.er.ite

n.（名词）
A red residual soil in humid tropical and subtropical regions that is leached of soluble minerals, aluminum hydroxides, and silica but still contains concentrations of iron oxides and iron hydroxides.
红土：湿润的热带或亚热带地区的红色残留土，被雨水冲掉了可溶性矿物质、氢氧化铝和二氧化硅，但是仍保留了氧化铁和氢氧化铁

来源：
Latin later [brick]
拉丁语 later [硅]
-ite
-ite

【引伸】
lat.erit.ic