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phenocryst

play
noun phe·no·cryst \-ˌkrist\

Definition of phenocryst

  1. :  one of the prominent embedded crystals of a porphyry

phenocrystic play \ˌfē-nə-ˈkris-tik\ adjective


Origin of phenocryst

French phénocryste, from Greek phainein to show + krystallos crystal — more at fancy


First Known Use: 1893


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