You searched for: “regolith
mantle rock, regolith
1. The layer of loose rock resting on bedrock, constituting the surface of most land.
2. The layer of disintegrated and decomposed rock fragments; including soil, just above the solid rock of the earth's crust.
Word Entries at Get Words: “regolith
The topmost layer of the moon and earth-like planets, which has been broken up by meteoric bombardment.
This entry is located in the following unit: Astronomy and related astronomical terms (page 22)