regolith

American  

[reg-uh-lith] / ˈrɛg ə lɪθ /

noun

1. mantle rock.

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regolith British  

/ ˈrɛɡəlɪθ /

noun

1. the layer of loose material covering the bedrock of the earth and moon, etc, comprising soil, sand, rock fragments, volcanic ash, glacial drift, etc

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regolith Scientific  

/ rĕg′ə-lĭth′ /

1. The layer of rock and mineral fragments that rests on bedrock and is produced by the weathering of rocks. Regolith constitutes the surface of most land.

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Etymology

Origin of regolith

1895–1900; < Greek rhêgo ( s ) rug, blanket + -lith

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Example Sentences

See Examples For:

regolith

The plan depends on beneficial fungi, microorganisms that could help improve Martian regolith enough for crops to grow.

From Science Daily ● Sep. 26, 2026

Abiotic stress is particularly important for crops grown in nutrient poor materials such as lunar and Martian regolith.

From Science Daily ● Sep. 26, 2026

Differences in the texture and density of the regolith, for example, could influence how rover wheels move across the surface.

From Science Daily ● Sep. 18, 2026

"Our study provides important, concrete predictions for this Japanese MMX mission, such as the thickness and distribution of the regolith layer and the mechanical properties of Deimos's material," explains Raducan.

From Science Daily ● Aug. 26, 2026

The same impact could also explain why regolith is spread across the entire moon.

From Science Daily ● Aug. 26, 2026

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