greywacke


Definition: Meaning of, greywacke in English to English dictionary.

Pronunciation: / ˈɡreɪwakə /

  • noun
  • synonym
  • antonym
Word Forms:
Singular Plural
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  1. hard dark-coloured sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix
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