Definition of pyroclastic
: formed by or involving fragmentation as a result of volcanic or igneous action
Recent Examples of pyroclastic from the Web
With that in mind, Japanese officials have adopted an evacuation plan that calls for up to 750,000 people who live within range of lava and pyroclastic flows (fast-moving currents of hot gas and rock) to leave their homes.
Such instances can result in fast-moving pyroclastic flows, or hot flows made up of gas, ash, and rock fragments, that can be deadly to local communities.
Ash has dusted the region and some localized pyroclastic flows—masses of hot rock and gas—have been seen.
As much as 20% of the island was covered in ash from the pyroclastic flows and fallout from the eruption.
During an overflight on 13 May, evidence of pyroclastic flows on the N flank was observed.
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