Definition of xenocryst in English:

xenocryst

Syllabification: xen·o·cryst
Pronunciation: /ˈzenəˌkrist, ˈzēnə-
 
/

noun

Geology
  • A crystal in an igneous rock that is not derived from the original magma.
    More example sentences
    • This could represent a xenocryst derived from Archaean basement rocks of the region.
    • Again, the lack of zircon xenocrysts in this sample does not allow discrimination between these alternatives.
    • The xenocrysts provide evidence that earlier Neoproterozoic rocks were present in the region and that locally rocks date back to 1929 Ma.

Origin

late 19th century: from xeno- 'foreign' + crystal.

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