1. a scientist who studies volcanoes and volcanic activity

Examples

• The volcanologist monitored seismic activity near the active volcano.
• She became a volcanologist after witnessing an eruption as a child.
• The team of volcanologists collected lava samples for analysis.
• A volcanologist warned residents about potential volcanic hazards.
• The university hired a new volcanologist to lead the geology department.
• Volcanologists use specialized equipment to measure gas emissions.