• (British) IPA: /ˈbɹɛtʃ(ɪ)ə/

breccia (uncountable)

  1. (petrology) A rock composed of angular fragments in a matrix that may be of a similar or a different material.
    • 2004, Richard Fortey, The Earth, Folio Society 2011, p. 24:
      Courses of angular boulders line the rim of the volcano, the remains of its last explosive phase, resulting in a volcanic breccia.

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