Definition of regolith in English:

regolith

noun

mass nounGeology
  • The layer of unconsolidated solid material covering the bedrock of a planet.

    • ‘The regolith is a small-grained material resulting from multiple impacts on the moon's surface.’
    • ‘Alteration of the bedrock produces a regolith, the base of which is known as the weathering front.’
    • ‘The surface of the Moon is covered by a soil layer called regolith, which has been produced by meteorite impact.’
    • ‘The Moon's crust is composed of a material known as regolith.’
    • ‘Many images show evidence of a thick loose regolith or gravel/sand/silt layer that could be collected easily by scooping or shoveling.’

Origin

Late 19th century: from Greek rhēgos ‘rug, blanket’ + -lith.

Pronunciation

regolith

/ˈrɛɡəlɪθ/