Dictionary.com
definitions

regolith

[ reg-uh-lith ]
/ ˈrɛg ə lɪθ /

noun

mantle rock.

Nearby words

  1. regmaker,
  2. regnal,
  3. regnant,
  4. regnat populus,
  5. rego,
  6. regorge,
  7. regosol,
  8. regr.,
  9. regrate,
  10. regrating

Origin of regolith

1895–1900; < Greek rhêgo(s) rug, blanket + -lith
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for regolith

regolith

/ (ˈrɛɡəlɪθ) /

noun

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

Word Origin for regolith

C20: from Greek rhēgos covering, blanket + lithos stone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for regolith

regolith

n.

1897, from Greek rhegos "rug, blanket," from PIE *reg- (3) "to dye" (see raga) + lithos "stone" (see litho-).

Online Etymology Dictionary, © 2010 Douglas Harper
Science definitions for regolith

regolith

[ rĕg′ə-lĭth′ ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.