clast
[ klast ]
/ klæst /
noun
a grain of sediment, silt, sand, gravel, etc., especially as a constituent fragment of a clastic rock formation, as distinguished from a chemical or biogenic component of such a formation.
Nearby words
- classon,
- classroom,
- classroom assistant,
- classwork,
- classy,
- clastic,
- clastogenic,
- clastothrix,
- clat,
- clathrate
Origin of clast
First recorded in 1950–55; probably back formation from clastic
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
clast
[ klăst ]
A rock fragment or grain resulting from the breakdown of larger rocks.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.