[ hahy-droh-i-lek-trik ]


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


/ ˌhaɪdrəʊɪlɛkˈtrɪsɪtɪ; -ˌiːlɛk-; ˌhaɪdrəʊɪˈlɛktrɪk /


  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

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Derived Forms

  • hydroelectricity, noun
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Other Words From

  • hy·dro·e·lec·tric·i·ty [hahy-droh-i-lek-, tris, -i-tee, -ee-lek-], noun
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Word History and Origins

Origin of hydroelectric1

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

Lake Mead feeds Hoover Dam, one of the largest hydroelectric generating facilities in the country.

A national network of short spur lines and long-distance, high-voltage wires would deliver wind, solar and hydroelectric power to where it’s needed when it’s available across the country.

It also built the massive Three Gorges Dam, which diverted the Yangtze River and displaced more than a million people to create the world’s biggest hydroelectric power plant.

Brazil is also heavily reliant on hydroelectric power, and lower levels in the country’s reservoirs, lakes and rivers will hinder electricity generation.

From Ozy

Water levels tend to be high in June thanks to snow runoff, which means plenty of hydroelectric capacity at regional dams.

From Time

We made big things like steel for ships and tractors and turbines for hydroelectric plants.

To make a living, he gets a job as a manager at a hydroelectric plant.

Greetings from Manitoba, the Saudi Arabia of untapped hydroelectric potential.

My National Post column urges the government of Ontario to consider hydroelectric power instead of wind turbines.

The great hydroelectric dams, the hundreds of steam turbines, the heavy-metal atomic reactors—all useless for power purposes.

We shall then have an opportunity that never before has been given us to develop the hydroelectric possibilities of the country.

The other ten per cent according to the Commission's plan will be hydroelectric power.

Maybe Crane figured Taber's scalp was too small a price to pay for the hydroelectric plum.

The rivers have a high potential for the generation of hydroelectric power.





hydroelastic suspensionhydroflight