regolith
reg·o·lith
noun \ˈre-gə-ˌlith\Definition of REGOLITH
: unconsolidated residual or transported material that overlies the solid rock on the earth, moon, or a planet
Origin of REGOLITH
Greek rhēgos blanket + English -lith; akin to Greek rhezein to dye — more at raga
First Known Use: 1897
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