Definition of clastic in English:
 clastic
adjective ˈklastɪkˈklæstɪk
Geology Denoting rocks composed of broken pieces of older rocks.
 a group of clastic sediments such as conglomerates
 Example sentencesExamples
-  In contrast, the Cambrian clastic rocks are characterized by a paucity of these zircons, suggesting a significant difference between Neoproterozoic and Cambrian drainage systems.
 -  The Allouez Conglomerate is composed mainly of red-colored clastic rocks with lesser amounts of sandstone and siltstone.
 -  Mechanical deposition, by water or wind, produces clastic rocks composed of broken fragments, generally of silicate minerals and small pieces of rock: sandstones and conglomerates.
 -  The upper unit consists of red continental clastic rocks of presumed Pcrmo-Triassic age, overlain by Triassic carbonate rocks.
 -  No volcanic or clastic sedimentary rocks were obtained from Cavalli Seamount.
 
Origin
  
Late 19th century: from French clastique, from Greek klastos 'broken in pieces'.
   Definition of clastic in US English:
 clastic
adjectiveˈklæstɪkˈklastik
Geology Denoting rocks composed of broken pieces of older rocks.
 a group of clastic sediments such as conglomerates
 Example sentencesExamples
-  No volcanic or clastic sedimentary rocks were obtained from Cavalli Seamount.
 -  The upper unit consists of red continental clastic rocks of presumed Pcrmo-Triassic age, overlain by Triassic carbonate rocks.
 -  The Allouez Conglomerate is composed mainly of red-colored clastic rocks with lesser amounts of sandstone and siltstone.
 -  Mechanical deposition, by water or wind, produces clastic rocks composed of broken fragments, generally of silicate minerals and small pieces of rock: sandstones and conglomerates.
 -  In contrast, the Cambrian clastic rocks are characterized by a paucity of these zircons, suggesting a significant difference between Neoproterozoic and Cambrian drainage systems.
 
Origin
  
Late 19th century: from French clastique, from Greek klastos ‘broken in pieces’.