clastic (adj.)youdaoicibaDictYouDict[clastic 词源字典]
"consisting of broken pieces," 1875, in geology, from Latinized form of Greek klastos "broken in pieces," from klan, klaein "to break," from PIE *kla-, variant of root *kel- (1) "to strike" (see holt).[clastic etymology, clastic origin, 英语词源]