geothermal Hear it!

geothermal definition

geo·ther·mal (-thʉr′məl)

adjective

having to do with the heat of the earth's interior
sometimes geothermic ge′o·ther′·mic (-t̸hʉr′mik)

Etymology: geo- + thermal

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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