augengneiss

English dictionary entry

Meanings

noun
  1. A type of metamorphic rock characterized by large, lenticular mineral grains or crystal aggregates (usually feldspar or quartz grains that have been deformed during metamorphism), resembling eyes, embedded within a finer-grained matrix.

Pronunciation

/ˈaʊ̯ɡənˌnaɪ̯sɪz/

Word forms

augengneiss augengneisses

Etymology

From German Augen (“eyes”) + gneiss

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