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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.

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Origin of clast

First recorded in 1950–55; probably back formation from clastic

Words nearby clast

classroom assistant, class structure, class struggle, classwork, classy, clast, clastic, clastogenic, clastothrix, clat, clathrate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for clast

clast
[ klăst ]

A rock fragment or grain resulting from the breakdown of larger rocks.

Other words from clast

clastic adjective (klăs′tĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.