e·lu·vi·um 
(ĭ-lvē-əm)
(ĭ-lvē-əm)n. pl. e·lu·vi·ums or e·lu·vi·a (-vē-ə)
Residual deposits of soil, dust, and rock particles produced by the action of the wind.
[New Latin ēluvium, from Latin ēluere, to wash out; see ELUTE.]
e·luvi·al (-əl) adj.