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
crystalthat does not occur in a specific igneous rock
from The American Heritage® Dictionary of the English Language, 4th Edition
[xeno– + cryst(al).]
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