geothermal

The definition of geothermal is something related to the earth's internal heat.

(adjective)

A heating system that harnesses the heat energy produced by the earth underground is an example of a geothermal heating system.

See geothermal in Webster's New World College Dictionary

adjective

having to do with the heat of the earth's interior

sometimes geothermic

Origin: geo- + thermal

See geothermal in American Heritage Dictionary 4

adjective

Of or relating to the internal heat of the earth.

Related Forms:

Learn more about geothermal

geothermal science

geothermal in a sentence

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