phenocryst

About 0.03 uses per million words.

Meaning

1. noun Any relatively large crystal embedded in a more fine-grained or glassy igneous rock

Similar words

olivine phenocrystal microphenocryst xenocryst megacryst brotocrystal macrocryst xenocrystal cryptocrystalline mesocrystal

Often followed by

phases in of and content assemblage phase assemblages is

Word family

phenocrystic phenocrysts