clast
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clast
(klăst)n.
A rock fragment or grain resulting from the breakdown of larger rocks.
[From Greek klastos, broken, from klān, to break.]
clast
(klæst)n
(Minerals) a fragment of (sedimentary) rock broken off from a larger rock
clast
(klæst)n.
a fragment of a clastic rock formation.
[1950–55; probably back formation from clastic]
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Noun | 1. | clast - (geology) a constituent fragment of a clastic rock geology - a science that deals with the history of the earth as recorded in rocks clastic rock - (geology) a rock composed of broken pieces of older rocks fragment - a piece broken off or cut off of something else; "a fragment of rock" |