Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

geothermal

play
adjective geo·ther·mal \-ˈthər-məl\

Simple Definition of geothermal

  • : of, relating to, or using the natural heat produced inside the Earth; also : produced by such heat

Source: Merriam-Webster's Learner's Dictionary

Full Definition of geothermal

  1. :  of, relating to, or utilizing the heat of the earth's interior; also :  produced or permeated by such heat <geothermal steam> <geothermal regions>

geothermally

play \-mə-lē\ adverb

Origin and Etymology of geothermal

International Scientific Vocabulary


First Known Use: 1875


Seen and Heard

What made you want to look up geothermal? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to proceed clumsily or ineffectually

Get Word of the Day daily email!