- The definition of geothermal is something related to the earth's internal heat.
A heating system that harnesses the heat energy produced by the earth underground is an example of a geothermal heating system.
geothermal definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
having to do with the heat of the earth's interior
Origin: geo- plush thermal
geothermal definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Of or relating to the internal heat of the earth.
- geˌo·therˈmal·ly adverb
geothermal - Science Definition
Relating to the internal heat of the Earth. The water of hot springs and geysers is heated by geothermal sources. ♦ geothermal energy is power generated from natural steam, hot water, hot rocks, or lava in the Earth's crust. In general, geothermal power is produced by pumping water into cracks in the Earth's crust and then conveying the heated water or steam back to the surface so that its heat can be extracted through a heat exchanger, or its pressure can be used to drive turbines.