phenocryst


phe·no·cryst

noun \-ˌkrist\

Definition of PHENOCRYST

:  one of the prominent embedded crystals of a porphyry
phe·no·crys·tic \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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