lithosol

noun

lith·​o·​sol ˈli-thə-ˌsäl 

-ˌsȯl

: any of a group of shallow azonal soils consisting of imperfectly weathered rock fragments

Word History

Etymology

litho- + -sol (in podsol, variant of podzol)

First Known Use

circa 1938, in the meaning defined above