geothermal

adjective
geo·​ther·​mal | \ ˌjē-ō-ˈthər-məl How to pronounce geothermal (audio) \

Definition of geothermal

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

Keep scrolling for more

Other Words from geothermal

geothermally \ ˌjē-​ō-​ˈthər-​mə-​lē How to pronounce geothermally (audio) \ adverb

Did You Know?

Geothermal comes partly from the Greek thermos, "hot". Most geothermal electricity is provided by power plants situated in areas where there is significant activity of the Earth's great tectonic plates—often the same areas where volcanoes are found. But hot water from deep underground may be used by cities far from volcanoes to heat buildings or sidewalks. And a newer source of geothermal energy relies on a less dramatic kind of heat: Individual homeowners can now install heat pumps that take advantage of the 50°-60° temperature of the soil near the surface to provide heating in cold weather (and air-conditioning in the warm months). These very small-scale geothermal systems may eventually supply more useful energy than the large power plants.

Examples of geothermal in a Sentence

Recent Examples on the Web

The park is home to 40-plus geothermal hot springs, which reach temperatures up to 143 degrees Fahrenheit. Jae Thomas, Marie Claire, "The Best National Parks for Every Kind of Vacation," 15 Aug. 2019 Park City Yoga Adventures combines the practice with hiking and a stand-up paddleboard experience inside a 10,000-year-old geothermal cave filled with 96-degree mineral water. Amy Tara Koch, Dallas News, "These four mountain getaways are worth a peak," 13 Aug. 2019 Park City Yoga Adventures combines the practice with hiking and a stand-up paddleboard experience inside a 10,000-year-old geothermal cave filled with 96-degree mineral water. Amy Tara Koch, Twin Cities, "Mountain getaways are worth a ‘peak’ in summer," 27 July 2019 Pumping water into geothermal vents to generate steam for heating and electricity has also triggered temblors. Michael Price, Science | AAAS, "Sea of Galilee earthquakes triggered by excessive water pumping," 26 July 2019 Park City Yoga Adventures combines the practice with hiking and a stand-up paddleboard experience inside a 10,000-year-old geothermal cave filled with 96-degree mineral water. Amy Tara Koch, The Know, "Mountain getaways outside of Colorado that are worthy of a summer vacation," 24 July 2019 First-rate insulation and a geothermal heat pump helped win the home the Pocono Builders’ award for most energy-efficient house built in 2012. Sally A. Downey, Philly.com, "Poconos weekend retreat becomes year-round home," 12 June 2018 The system’s efficiency is boosted by a geothermal heat pump that sheds excess heat or cold through a circuit of underground pipes. National Geographic, "From Historic to Cutting Edge: Revitalizing Iconic Buildings," 25 May 2018 Qualifying solar electric, solar water heating, geothermal heat pump, or wind energy property expenses are eligible for a credit of up to 30%, with limits based on the capacity of some systems. Motley Fool Staff, USA TODAY, "Taking advantage of tax reform: 19 tax hacks for 2018," 28 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geothermal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of geothermal

1875, in the meaning defined above

History and Etymology for geothermal

International Scientific Vocabulary

Keep scrolling for more

Learn More about geothermal

Statistics for geothermal

Last Updated

22 Aug 2019

Look-up Popularity

Time Traveler for geothermal

The first known use of geothermal was in 1875

See more words from the same year

Keep scrolling for more

More Definitions for geothermal

geothermal

adjective

English Language Learners Definition of geothermal

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

Comments on geothermal

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

not constant or steady

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!