regolith

[reg-uh-lith]

reg·o·lith

[reg-uh-lith]

Origin:
1895–1900; < Greek rhêgo(s) rug, blanket + -lith
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Regolith is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
Collins
World English Dictionary
regolith (ˈrɛɡəlɪθ)
 
n
the layer of loose material covering the bedrock of the earth and moon, etc, comprising soil, sand, rock fragments, volcanic ash, glacial drift, etc
 
[C20: from Greek rhēgos covering, blanket + lithos stone]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Science Dictionary
regolith   (rěg'ə-lĭth')  Pronunciation Key 
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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