Regolith (noun) (geology)
reg-o-lith
The layer of unconsolidated solid material covering the bedrock of a planet.
Late 19th century from Greek rhēgos ‘rug, blanket’ + -lith.
Example sentences
“The planet’s regolith was made of unknown substances.”
Word of the Day - Semiquincentennial (noun) se-mee-kwin-sen-tee-nee-al
