hy·​dro·​elec·​tric | \ ˌhī-drō-i-ˈlek-trik How to pronounce hydroelectric (audio) \

Definition of hydroelectric

: of or relating to production of electricity by waterpower constructed a hydroelectric power plant at the dam site

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Other Words from hydroelectric

hydroelectrically \ ˌhī-​drō-​i-​ˈlek-​tri-​k(ə-​)lē How to pronounce hydroelectrically (audio) \ adverb
hydroelectricity \ ˌhī-​drō-​i-​ˌlek-​ˈtri-​sə-​tē How to pronounce hydroelectricity (audio) , -​ˈtri-​stē \ noun

Did You Know?

The prime component of most hydroelectric systems is a dam. A high dam funnels water downward at high pressure to spin turbines, which in turn drive generators to produce high-voltage electricity. Mountainous countries with rushing rivers can produce the most hydroelectricity. Though hydroelectricity comes from a clean and completely renewable energy source, dams disrupt natural systems in a way that disturbs environmentalists.

Examples of hydroelectric in a Sentence

Recent Examples on the Web The two countries have been at loggerheads with each other for years over Ethiopia’s construction of the massive hydroelectric dam on the Nile—Egypt’s sole water source for irrigation farming and in general for its 100 million-strong population. Zecharias Zelalem, Quartz Africa, "An Egyptian cyber attack on Ethiopia by hackers is the latest strike over the Grand Dam," 27 June 2020 The Rule does allow exceptions for hydroelectric projects, mines, and community interties—every project applied for has been permitted. Bjorn Dihle, Outdoor Life, "The Roadless Rule in the Tongass National Forest is Vital for Both Hunters and Brown Bears," 16 June 2020 Egypt appealed to the United Nations Security Council on Friday to intervene in talks over a $4 billion hydroelectric dam being built by Ethiopia on the Blue Nile river. NBC News, "Egypt calls for U.N. intervention after talks stall on Ethiopia's Grand Renaissance Dam," 20 June 2020 Paiakan was known for drawing attention to the cost of building the Belo Monte hydroelectric plant on the Amazon's Xingu River in the 1980s. Jack Guy, Jonny Hallam And Maija Ehlinger, CNN, "Paulinho Paiakan, Amazon chief and indigenous rainforest protector, dies aged 66," 18 June 2020 For wind, hydroelectric, and solar, kilowatt-hours of electricity are converted to BTUs of heat based on the current average heat-to-electricity ratio of all combustion power plants. Scott K. Johnson, Ars Technica, "135-year-long streak is over: US renewable sources topped coal in 2019," 29 May 2020 The transmission line that carries power from the state’s largest hydroelectric plant at Bradley Lake near Homer to communities across the Railbelt was back online Thursday, according to a statement from Chugach Electric Association. Aubrey Wieber, Anchorage Daily News, "High-voltage transmission line damaged in Swan Lake fire back online," 20 Dec. 2019 The turbines of hydroelectric power plants slice up migrating eels into something for which only Larousse Gastronomique might have a use. The Economist, "The mysterious life and times of eels," 18 Dec. 2019 The Ilisu dam is part of a government plan dating to the 1970s aimed at developing southeastern Turkey with 22 dams and 19 hydroelectric plants, according to a summary on the website of the Ministry of Industry and Technology. Washington Post, "A Turkish dam is about to flood one of the oldest continuously settled places on Earth," 27 Nov. 2019

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

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First Known Use of hydroelectric

1884, in the meaning defined above

History and Etymology for hydroelectric

International Scientific Vocabulary

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Time Traveler for hydroelectric

Time Traveler

The first known use of hydroelectric was in 1884

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Statistics for hydroelectric

Last Updated

7 Jul 2020

Cite this Entry

“Hydroelectric.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydroelectric. Accessed 11 Aug. 2020.

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More Definitions for hydroelectric


How to pronounce hydroelectric (audio)

English Language Learners Definition of hydroelectric

technical : of or relating to the production of electricity by using machines that are powered by moving water


hy·​dro·​elec·​tric | \ ˌhī-drō-i-ˈlek-trik How to pronounce hydroelectric (audio) \

Kids Definition of hydroelectric

: relating to or used in the making of electricity by waterpower hydroelectric power

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More from Merriam-Webster on hydroelectric

Spanish Central: Translation of hydroelectric

Nglish: Translation of hydroelectric for Spanish Speakers

Britannica English: Translation of hydroelectric for Arabic Speakers

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