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Vinony

pyroclast

noun

  1. a fragment of detrital volcanic material that has been expelled aerially from a vent
L1494748 on Wikidata ↗

Wiktionary

noun

Etymology: Etymology tree Proto-Indo-European *péh₂wr̥ Proto-Hellenic *pāwər Ancient Greek πῦρ (pûr) Latin pyr English pyro- English clast English pyroclast From pyro- + clast.

  1. Solid matter ejected into the air by an active volcano.