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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
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. 2015.
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Examples from the web for hydroelectric
  • One uses hydroelectric power, the other uses power from coal-burning plants.
  • Food imports rose, hydroelectric power stagnated, trucks shipped emergency water supplies.
  • They envisage an expansion of road-building in the forest, as well as some big hydroelectric projects.
  • The ruins of an ancient village submerged by the construction of a hydroelectric dam resurface when lake levels are low.
  • hydroelectric plants built from bank to bank harness the power of water and convert it to electricity.
  • hydroelectric power must be one of the oldest methods of producing power.
  • Responsible for providing technical support, testing, and diagnostic services for hydroelectric power plants.
  • hydroelectric power generation is a beneficial use of water.
  • When flowing water is captured and turned into electricity, it is called hydroelectric power or hydropower.
  • hydroelectric power is a major source of electricity in the world.
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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