clast (kl st)n. A rock fragment or grain resulting from the breakdown of larger rocks. [From Greek klastos, broken, from kl  n, to break.] |
| clast (klst) A rock fragment or grain resulting from the breakdown of larger rocks. clastic adjective (kl s t k) |
ThesaurusLegend: Synonyms Related Words Antonyms
| 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" |
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