regolith

reg o lith |ˈregəˌliTH ˈrɛɡəˌlɪθ | ▶noun Geology the layer of unconsolidated rocky material covering bedrock. ORIGIN late 19th cent.: from Greek rhēgos ‘rug, blanket ’ + -lith .

regolith

regolith |ˈrɛgəlɪθ | ▶noun [ mass noun ] Geology the layer of unconsolidated solid material covering the bedrock of a planet. ORIGIN late 19th cent.: from Greek rhēgos ‘rug, blanket ’ + -lith .