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hydroelectric

American  
[hahy-droh-i-lek-trik] / ˌhaɪ droʊ ɪˈlɛk trɪk /

adjective

  1. pertaining to the generation and distribution of electricity derived from the energy of falling water or any other hydraulic source.


hydroelectric British  
/ ˌhaɪdrəʊɪlɛkˈtrɪsɪtɪ, -ˌiːlɛk-, ˌhaɪdrəʊɪˈlɛktrɪk /

adjective

  1. generated by the pressure of falling water

    hydroelectric power

  2. of or concerned with the generation of electricity by water pressure

    a hydroelectric scheme

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of hydroelectric

First recorded in 1825–35; hydro- 1 + electric

Vocabulary lists containing hydroelectric

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Hotter conditions raise electricity demand, while drought can reduce hydroelectric generation and increase reliance on natural gas and other fuels.

From MarketWatch Jul. 28, 2026

If it drops an additional 33 feet, water won’t reach its intakes to generate hydroelectric power.

From Los Angeles Times Jul. 23, 2026

Mamman was found guilty on 12 counts related to the diversion of funds meant for two hydroelectric power projects.

From BBC May 20, 2026

And in 2024 Ecuador experienced a severe drought, which brought on daily power outages up to 14 hours a day because the hydroelectric dams didn’t have enough water to generate electricity.

From The Wall Street Journal Apr. 19, 2026

It makes sense, then, that the construction of small and mediumsized hydroelectric plants—capable of serving local industry and built mostly by hand, using basic technology—has been a priority since the 1990s.

From "Escape from Camp 14: One Man's Remarkable Odyssey from North Korea to Freedom in the West" by Blaine Harden

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