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porphyroblast

Pronunciation: /ˈpɔːfɪrə(ʊ)blast/

Definition of porphyroblast

noun

Geology
  • a larger recrystallized grain occurring in a finer groundmass in a metamorphic rock.

Derivatives

porphyroblastic

Pronunciation: /-ˈblastɪk/

adjective

porphyroblast in other Oxford dictionaries

Definition of porphyroblast in the US English dictionary

Nearby words

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