Phenocryst Definition

fēnə-krĭst
noun
A relatively large and usually conspicuous crystal found in a fine-grained matrix in porphyritic igneous rock.
Webster's New World

Other Word Forms of Phenocryst

Noun

Singular:
phenocryst
Plural:
phenocrysts

Origin of Phenocryst

  • pheno– cryst(al)

    From American Heritage Dictionary of the English Language, 5th Edition

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phenocryst