hy·dro·elec·tric | \ ˌhī-drō-i-ˈlek-trik \

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 \ adverb
hydroelectricity \ˌhī-drō-i-ˌlek-ˈtri-sə-tē, -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

About 17% of the country’s electricity last year came from renewable sources, including wind, solar and hydroelectric dams, according to federal data. Russell Gold, WSJ, "Global Investment in Wind and Solar Energy Is Outshining Fossil Fuels," 11 June 2018 The major driver to invest in wind in many states is renewable portfolio standards, which mandate a minimum amount of electricity to come from renewable sources, like hydroelectric, wind, solar, and geothermal power plants. Umair Irfan, Vox, "4 maps that show who’s being left behind in America’s wind-power boom," 2 May 2018 In Iceland, electricity costs are low due to its renewable sources of energy from both geothermal and hydroelectric power plants. Sarah Gray, Fortune, "Suspected Mastermind Behind the 'Big Bitcoin Heist' Escapes Prison Through a Window," 19 Apr. 2018 Sayanogorsk was established in 1975 to house workers at a hydroelectric plant built some 20 miles up the nearby Yenisei River. Thomas Grove, WSJ, "U.S. Sanctions Echo Through Russian Factory Towns," 2 July 2018 Locomotives wend through Sphagnum moss-like trees, and hydroelectric plants straddle navy-blue rivers. Danielle Bochove, Bloomberg.com, "Trump’s Trade War Looms Over a Canadian Town Built to Supply America," 28 June 2018 Water is sucked into the original 1935 hydroelectric plant May 17 at the Twin Falls Power Plant. Heather Kennison, idahostatesman, "What's it like to rely on renewable energy? Look at life in Idaho.," 26 June 2018 Ford’s Twin Cities Assembly Plant in St. Paul, Minnesota opened in 1925 to build Model Ts in a state-of-the-art facility powered by a hydroelectric dam on the Mississippi River. Jay Walljasper, WIRED, "The Bitter Battle to Turn an Old Factory Into a 21st Century 'Eco-Village'," 3 July 2018 Moscow later agreed to build a massive hydroelectric dam on the Nile in southern Egypt after the World Bank, reportedly at Washington’s behest, declined to finance the project. Washington Post, "World Cup Russia 2018 newsletter," 18 June 2018

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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Last Updated

23 Aug 2018

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Time Traveler for hydroelectric

The first known use of hydroelectric was in 1884

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English Language Learners Definition of hydroelectric

: 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 \

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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alleviating pain or harshness

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