hydroelectric

adjective

hy·​dro·​elec·​tric ˌhī-drō-i-ˈlek-trik How to pronounce hydroelectric (audio)
: of or relating to production of electricity by waterpower
constructed a hydroelectric power plant at the dam site
hydroelectrically adverb
hydroelectricity 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The film tells the dramatic story of three community leaders in Latin America who resisted government and corporate plans to divert critical local water resources to mining and hydroelectric projects. Ryan Schwartz, TVLine, 19 Apr. 2025 Because Ecuador is largely dependent on hydroelectric energy, a drought last year caused daily 14-hour power cuts for about three months. Genevieve Glatsky, New York Times, 9 Feb. 2025 Through its infrastructure investments, such as a megaport in Peru and a hydroelectric plant in Ecuador, Beijing is now the region’s second-largest trading partner after the United States. Roger W. Ferguson, Foreign Affairs, 30 Jan. 2025 Over the years, the moose's trip across the river has been affected by the development of roads and hydroelectric power facilities, which created dams that diminish the ice. Ayana Archie, NPR, 25 Apr. 2025 See All Example Sentences for hydroelectric

Word History

Etymology

International Scientific Vocabulary

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of hydroelectric was in 1884

Browse Nearby Words

Cite this Entry

“Hydroelectric.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydroelectric. Accessed 21 May. 2025.

Kids Definition

hydroelectric

adjective
hy·​dro·​elec·​tric ˌhī-drō-i-ˈlek-trik How to pronounce hydroelectric (audio)
: of or relating to production of electricity by waterpower
hydroelectricity noun

More from Merriam-Webster on hydroelectric

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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