xenocryst: Meaning and Definition of

xen•o•cryst

Pronunciation: (zen'u-krist, zē'nu-), [key]
— n. Mineral.
  1. a rock or crystal engulfed by magma and retained as an inclusion in the resulting igneous rock.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.