Definition, Meaning & Synonyms

regolith

noun

/ˈrɛɡəˌlɪθ/

Definition

A layer of loose, unconsolidated material that covers solid rock on the surface of a celestial body.

Examples

The regolith on the Moon is made up of fine dust and rocky debris caused by meteorite impacts.
Scientists study the regolith on Mars to learn about its composition and the planet’s geological history.
The layer of regolith can provide a valuable resource for future space missions.

Meaning

Regolith is the blanket of dust, soil, broken rock, and other related materials that covers solid bedrock. It can be found on the Moon, Mars, and other planetary bodies.