1. rock fragments and particles ejected by a volcanic eruption
Usage: geological

Examples

• The tephra from the volcanic eruption covered the nearby villages in a thick layer of ash.
• Scientists collected tephra samples to study the composition of the volcanic material.
• The tephra fall extended for hundreds of miles from the eruption site.
• Geologists can date ancient eruptions by analyzing tephra layers in rock formations.
• The fine tephra particles remained suspended in the atmosphere for weeks.
• Farmers struggled to clear the tephra from their fields after the volcanic event.