A histosol, a soil comprising chiefly organic material.
1990, University of Michigan Southeast Asia Business Education and Resources Program, Southeast Asia Business, Issues 12-23, page 25,
On the other hand, in many parts of Kalimantan the climate is similar, and it also has large areas of yellow-red podsolic and organosol soils, which although having a rather low fertility, are suitable for some tree crops.
noun
A sol (colloid) comprising solid particles in an organic continuous medium.