regolith
/ˈrɛɡəlɪθ
/noun [mass noun] Geology
The layer of unconsolidated solid material covering the bedrock of a planet.The surface of the Moon is covered by a soil layer called regolith, which has been produced by meteorite impact....
- Alteration of the bedrock produces a regolith, the base of which is known as the weathering front.
- The Moon's crust is composed of a material known as regolith.
Origin
Late 19th century: from Greek rhēgos 'rug, blanket' + -lith.