1. Fragments of rock and ash ejected from a volcano during an eruption.
Usage: Usually used in plural form; Technical/geological term

Examples

• The pyroclastics from the eruption covered the surrounding villages in ash and pumice.
• Geologists studied the layers of pyroclastics to understand the volcano's eruption history.
• Pyroclastics can travel at extremely high speeds down the slopes of a volcano.
• The pyroclastics deposited by the blast created a new layer of volcanic rock.
• Scientists collected samples of pyroclastics to analyze their mineral composition.