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clastic

Syllabification: (clas·tic)
Pronunciation: /ˈklastik/
Definition of clastic

adjective

Geology
  • denoting rocks composed of broken pieces of older rocks.

Origin:

late 19th century: from French clastique, from Greek klastos 'broken in pieces'

clastic in other Oxford dictionaries

Definition of clastic in the British & World English dictionary