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clast
[ klast ]
/ klæst /
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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
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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
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