1. scientists who study rocks, their composition, structure, and formation
Usage: geology

Examples

• The petrologists examined samples from the volcanic eruption.
• Several petrologists collaborated on the research project about metamorphic rocks.
• The university hired two new petrologists for the geology department.
• Petrologists use microscopes to study thin sections of rock samples.
• The team of petrologists published their findings on igneous rock formation.
• Field work is essential for petrologists studying regional geology.