[ 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

OTHER WORDS FROM hydroelectric

hy·dro·e·lec·tric·i·ty [hahy-droh-i-lek-tris-i-tee, -ee-lek-] /ˌhaɪ droʊ ɪ lɛkˈtrɪs ɪ ti, -ˌi lɛk-/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for hydroelectric

British Dictionary definitions for hydroelectric

/ (ˌhaɪdrəʊɪˈlɛktrɪk) /


generated by the pressure of falling waterhydroelectric power
of or concerned with the generation of electricity by water pressurea hydroelectric scheme

Derived forms of hydroelectric

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

Scientific definitions for hydroelectric

[ hī′drō-ĭ-lĕktrĭk ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.