geothermal energy

Thermal energy contained in the earth; can be used directly to supply heat or can be converted to mechanical or electrical energy.

Related terms:

• geothermal
• energy budget
• geothermal system
• energy transfer
• specific energy
• geopressurized geothermal system
• energy coefficient
• magma geothermal system
• dry-hot-rock geothermal system
• tidal energy