1. the process by which existing rocks are changed by heat, pressure, or chemical action to form new types of rocks
Usage: geology
2. a complete change in form, structure, or character
Usage: formal

Examples

• The metamorphism of limestone produces marble under intense heat and pressure.
• Regional metamorphism occurs over large areas due to tectonic forces.
• Contact metamorphism happens when rocks are heated by nearby magma.
• The geologist studied the metamorphism that created the mountain’s slate formations.
• Cultural metamorphism transformed the small farming community into a bustling city.
• The company underwent a complete metamorphism after the merger.