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[hahy-droh-i-lek-trik] /ˌhaɪ droʊ ɪˈlɛk trɪk/
pertaining to the generation and distribution of electricity derived from the energy of falling water or any other hydraulic source.
Origin of hydroelectric
First recorded in 1825-35; hydro-1 + electric
Related forms
[hahy-droh-i-lek-tris-i-tee, -ee-lek-] /ˌhaɪ droʊ ɪ lɛkˈtrɪs ɪ ti, -ˌi lɛk-/ (Show IPA),
noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for hydroelectric
Contemporary Examples
Historical Examples
  • Porter might give it to him in exchange for a guarantee of the hydroelectric post.

    Ten From Infinity Paul W. Fairman
  • We have made tremendous public investments in highways, hydroelectric power projects, soil conservation, and reclamation.

  • Development of other methods show that nitrates can probably be produced at less cost than by the use of hydroelectric power.

  • 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.

    The Coming of Coal Robert W. Bruere
  • Maybe Crane figured Taber's scalp was too small a price to pay for the hydroelectric plum.

    Ten From Infinity Paul W. Fairman
  • The rivers have a high potential for the generation of hydroelectric power.

    Area Handbook for Romania

    Eugene K. Keefe, Donald W. Bernier, Lyle E. Brenneman, William Giloane, James M. Moore, and Neda A. Walpole
  • hydroelectric capacity development had been relatively more rapid, with a sixfold increase during the decade.

    Area Handbook for Romania

    Eugene K. Keefe, Donald W. Bernier, Lyle E. Brenneman, William Giloane, James M. Moore, and Neda A. Walpole
British Dictionary definitions for hydroelectric


generated by the pressure of falling water: hydroelectric power
of or concerned with the generation of electricity by water pressure: a hydroelectric scheme
Derived Forms
hydroelectricity (ˌhaɪdrəʊɪlɛkˈtrɪsɪtɪ; -ˌiːlɛk-) noun
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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Word Origin and History for hydroelectric

1827, formed in English from hydro- + electric. Related: Hydroelectricity.

Online Etymology Dictionary, © 2010 Douglas Harper
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hydroelectric in Science

Using the power of water currents to generate electric power. Generally, hydroelectric power is created by directing water flow through a turbine, where the water causes fans to turn, creating the torque needed to drive an electric generator.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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