1. volcanic activity or phenomena; the process of volcanic action
Usage: geological term

Examples

• The region’s vulcanicity has shaped its landscape over millions of years.
• Scientists study vulcanicity to better understand Earth’s internal processes.
• The island chain was formed by intense vulcanicity along the tectonic plate boundary.
• Evidence of ancient vulcanicity can be seen in the rock formations.
• The area’s vulcanicity poses both risks and benefits to local communities.
• Researchers monitor vulcanicity using seismic instruments and gas sensors.