[zen-uh-krist, zee-nuh-]

noun Mineralogy.

a rock or crystal engulfed by magma and retained as an inclusion in the resulting igneous rock.

Origin of xenocryst

Related formsxen·o·crys·tic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for xenocryst



a crystal included within an igneous rock as the magma cooled but not formed from it

Word Origin for xenocryst

C20: from xeno- + cryst (al)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for xenocryst


[zĕnə-krĭst′, zēnə-]

A crystal foreign to the igneous rock in which it occurs. Xenocrysts usually form during metamorphism. Compare xenolith.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.