Definition of breccia in English:



mass nounGeology
  • Rock consisting of angular fragments of stones cemented by finer calcareous material.

    ‘copious quantities of breccia’
    • ‘A volcanic or igneous breccia forms during eruptive activities.’
    • ‘It weights 751 grams and consists of breccia - sintered fragments of various minerals from lunar continents.’
    • ‘Breccias are associated with mechanical weathering in regions of high tectonic activity.’
    • ‘In some breccia zones the rock fragments exhibit partial melting and reaction rims.’
    • ‘Intrusive breccias can be the host for metallic ore deposits and aesthetic mineral specimens.’


Late 18th century: from Italian, literally ‘gravel’, ultimately of Germanic origin and related to break.