Relating to or having the characteristics of a collection of things stuck or clumped together.
From agglomerate (Latin agglomerare: ad- 'to' + glomerare 'to wind into a ball' from glomus 'ball') + -ic suffix forming adjectives. The -atic variant emphasizes the quality or state of being agglomerated.
Agglomeratic rocks are actually how geologists identify volcanic past—when volcanic material fuses together without melting completely, it tells a story of explosive eruptions that happened millions of years ago.
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