1. 
   hydroelectric
   [adj] - of or relating to or used in the production of electricity by waterpower
   Found op http://www.webdictionary.co.uk/definition.php?query=hydroelectric
   
   
2. 
   hydroelectric
   adjective of or relating to or used in the production of electricity by waterpower; `hydroelectric power`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=hydroelectric
   
   
3. 
   hydroelectric
   hydroelectric The conversion of water power into electric power.
   Found op http://www.wordinfo.info/words/index/info/view_unit/1009/6
   
   
4. 
   Hydroelectric
   Electricity produced by turbines that are turned by water flow.
   Found op http://www.custompowertransformer.com/glossary.html
   
   
5. 
   hydroelectric
   1) Electricity 2) Energy produced by water, usually from storing it in dams
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/hydroelectric/1
   
   

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