regolith
/ˈrɛɡəlɪθ/
noun
- The layer of loose, unconsolidated rock and dust that covers solid bedrock, especially on the Earth, the Moon, or other planets.
- Astronauts collected samples of lunar regolith during the Apollo missions.
- The regolith on Mars contains iron oxide, giving it a reddish color.
- Farmers must understand the local regolith to know which crops will grow best.
Antonyms