Definition that contains subsoil
- horizon a specific layer or stratum of soil or subsoil in a vertical cross section of land
- tundra a vast treeless plain in the Arctic regions where the subsoil is permanently frozen
- caliche crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
- tundra soil a black mucky soil with a frozen subsoil that is characteristic of Arctic and subarctic regions
- hardpan crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions