regolith Hear it!

regolith definition

rego·lith (reg′ə lit̸h′)

noun

the loose, unconsolidated material, residual or transported, that rests on the bedrock; mantle rock

Etymology: < Gr rhēgos, blanket, orig. colored rug (akin to rhezein, to dye) + -lith

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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