agglomerate

Từ điển LongMan Dictionary

ag‧glom‧er‧ate/əˈɡlɒmərət, əˈɡlɒmərɪt $ əˈɡlɑː-/ noun [SINGULAR, UNCOUNTABLE] technical
[date : 1600-1700; Language : Latin; Origin : past participle of agglomerare 'to pile up', from ad- 'to' glomus 'ball']
a type of rock formed from pieces of material from a volcano that have melted together

• Từ đồng nghĩa / Synonyms:
  agglomerated, agglomerative, clustered, pile, heap, mound, cumulation, cumulus