1. in a manner relating to or produced by the internal heat of the Earth
Usage: technical; commonly used in geology, energy, and environmental contexts

Examples

• Iceland generates electricity geothermally by tapping into hot springs and steam vents.
• The region is geothermally active, with frequent volcanic eruptions and geysers.
• New Zealand uses geothermally heated water for residential heating in some areas.
• The power plant operates geothermally, reducing dependence on fossil fuels.
• Geothermally heated pools are popular tourist attractions in volcanic regions.