Pyroclastic definition

pīrō-klăstĭk
Composed chiefly of rock fragments or particles of volcanic origin, such as pumice, obsidian, or volcanic ash.
adjective
2
1
Of or having to do with rocks formed from material that was explosively ejected from a volcano.
adjective
1
1
Composed chiefly of rock fragments of explosive origin, especially those associated with explosive volcanic eruptions. Volcanic ash, obsidian, and pumice are examples of pyroclastic materials.
1
1
(volcanology) Mostly composed of rock fragments of volcanic origin or comminuted during an eruption.
adjective
0
1
A rock mostly composed of rock fragments of volcanic origin.
noun
0
1
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Other Word Forms

Noun

Singular:
pyroclastic
Plural:
pyroclastics

Origin of pyroclastic

  • From pyro- +"Ž clastic, from Ancient Greek πῦρ (pur, “fire"), and κλαστός (klastos, “broken").

    From Wiktionary