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| hy·dro [ hdrō ] (plural hy·dros) |
noun |
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| Definition: |
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1. hydroelectric power plant: a power plant that generates electricity using water pressure
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2. hydroelectric power: power generated using water pressure
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3. Canada electric power: electricity from an electric utility
  the hydro bill
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| [Early 20th century. Shortening of hydroelectric] |
