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geothermal

[jee-oh-thur-muh l] /ˌdʒi oʊˈθɜr məl/
adjective
1.
of or pertaining to the internal heat of the earth.
Also, geothermic.
Origin
1870-1875
1870-75; geo- + thermal
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for geothermal
  • The government wants to contain the crisis in the long run with geothermal power.
  • They could also be used in geothermal and nuclear power plants.
  • So-called geothermal power has been around for more than a century.
  • Generate energy with solar panels, wind turbines or geothermal systems-or all three.
  • But the big play in geothermal energy has always been to simply use the hot rocks down there and create your own reservoir.
  • geothermal seems to be surging in the small and commercial-scale sector.
  • We settled on a geothermal system with heat pumps in each room.
  • The principle behind this geothermal energy is simple.
  • They provide valuable mineral deposits, fertile soils, and geothermal energy.
  • geothermal heating and cooling have great long term benefits in reduction of energy use.
British Dictionary definitions for geothermal

geothermal

/ˌdʒiːəʊˈθɜːməl/
adjective
1.
of or relating to the heat in the interior of the earth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for geothermal
adj.

1875, from geo- + thermal.

Online Etymology Dictionary, © 2010 Douglas Harper
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geothermal in Science
geothermal
  (jē'ō-thûr'məl)   
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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