Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A crystal foreign to the igneous rock in which it occurs.

from The Century Dictionary.

  • noun In petrography, a term proposed by Sollas for a crystal in an igneous rock which has been included by the igneous magma before the solidification of the rock.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun geology a crystal that does not occur in a specific igneous rock

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[xeno– + cryst(al).]

Examples

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