illuviation

noun

il·​lu·​vi·​a·​tion i-ˌlü-vē-ˈā-shən 

: accumulation of dissolved or suspended soil materials in one area or horizon as a result of eluviation from another

illuviated

i-ˈlü-vē-ˌā-təd 

adjective

Word History

Etymology

in- entry 2 + -luviation (as in eluviation)

First Known Use

1928, in the meaning defined above